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code/third_party/vMaterials_2/Concrete/Concrete_Floor_Damage.mdl

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+/******************************************************************************
+ *	 Copyright 2024 NVIDIA Corporation. All rights reserved.	 *
+ ******************************************************************************
+
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA's Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL,
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+
+mdl 1.5;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+
+const string COPYRIGHT =
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n"
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n"
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+const string DESCRIPTION = "A stone concrete material";
+
+int lowbias32(int x)
+{
+	x ^= x >>> 16;
+	x *= 0x7feb352d;
+	x ^= x >>> 15;
+	x *= 0x846ca68b;
+	x ^= x >>> 16;
+	return x;
+}
+
+float remap_xy_to_0_1(float input, float x, float y)
+{
+	return (input - x)/(y - x);
+}
+
+float histogram_scan_big(float input, float width, float position)
+{
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(-width, 1.0, position),
+					::math::lerp(0.0, 1.0 + width, position)),
+				0.0,
+				1.0);
+}
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+float uint2float(int x)
+{
+	return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+	return ret_val;
+}	
+
+float3 srgb2rgb(float3 val) 
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+   ::base::texture_coordinate_info transform_coordinate_2(
+	float4x4 transform										 
+		[[ ::anno::description("A transformation to be applied to the source coordinates. rotation_translation_scale() is a suggested means to compute the transformation matrix.") ]],
+	::base::texture_coordinate_info coordinate = ::base::texture_coordinate_info()
+		[[ ::anno::description("Coordinate, typically sourced from coordinate_source or coordinate_projection.") ]]
+) [[ 
+	::anno::description("Transform a texture coordinate by a matrix.") ,
+	::anno::noinline()
+  ]]
+{
+	
+
+	// Version 2
+	float4 r_position = transform * float4(coordinate.position.x,coordinate.position.y,coordinate.position.z,1);
+	//Try aproximating it for the case that the rotation is only aroud z and assuming the texture layout is nice and z is ~constant.
+	//just pretend there is no other rotation happening
+	//get rid of scaling and translation. Then extract fields where sin and cos would be in a simple 2d transform around z.
+	float4 u = transform[0];
+	float3 ru = ::math::normalize(float3(u.x,u.y,u.z));
+	float cos =  ru.x; 
+	float sin =  -ru.y;
+	
+	
+	return ::base::texture_coordinate_info(
+		float3(r_position.x,r_position.y,r_position.z),
+		::math::normalize(cos * coordinate.tangent_u - sin * coordinate.tangent_v),
+		::math::normalize(cos * coordinate.tangent_v + sin * coordinate.tangent_u));
+}
+
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;	 // patch scale inside example texture
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m)
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m)
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m);
+	else
+		O = (W[0] =	  -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m)
+		  + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m)
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m);
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+
+float3 endless_normal(
+	uniform texture_2d texture = texture_2d(),
+	float factor = 1.0,
+	bool flip_tangent_u = false,
+	bool flip_tangent_v = false,
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0
+	//bool srgb2rgb = false,
+	//bool rgb2srgb = false
+)
+{
+	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
+	float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
+	
+	if (flip_tangent_u)
+		transformed_tangent_u=-transformed_tangent_u;
+	if (flip_tangent_v)
+		transformed_tangent_v=-transformed_tangent_v;
+
+	// normalized Lookup
+	float3 tangent_space_normal =
+		 (nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		) - 0.5) * (2.0 * factor);
+		
+		 
+	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
+		  uvw.tangent_v * tangent_space_normal.y +
+		  ::state::normal()*1.0); 
+	//return ::state::normal();
+}
+color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, .5),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+::base::texture_coordinate_info vmat_transform(
+								float2 translation = float2(0.0, 0.0),
+								float rotation	 = 0.0,				// rotation in degrees
+								float2 scaling	 = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space	   = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.			 ,  0. ,	 0.,
+			 0.			, 1.0 /scaling.y ,  0. ,	 0.,
+			 0.			, 0.			 ,  1.0,	 0.,
+			 translation.x , translation.y  ,  0.0,	 1.);
+
+	float s = ::math::sin(rotation_rad);
+	float c = ::math::cos(rotation_rad);
+	float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return transform_coordinate_2(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+float histogram_range(float input, float range = 1.0f, float position = 0.5f)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+
+export material Concrete_Floor_Damage(
+	uniform bool infinite_tiling = false [[
+		::anno::description("Enables infinite tiling feature which removes repeating texture patterns. Note that depending on the material this feature changes the appearance of the material slightly."),
+		::anno::display_name("Infinite Tiling"),
+		::anno::in_group("Appearance")
+	]],
+	color stone_color = color(1.f, 0.928306997f, 0.848088026f) [[
+		::anno::description("."),
+		::anno::display_name("Color"),
+		::anno::in_group("Appearance")
+	]],
+	float reflection_roughness = 1.f [[
+		::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+		::anno::display_name("Roughness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float reflection_weight = 0.9f [[
+		::anno::description("Amount of reflection, higher numbers provide more reflection."),
+		::anno::display_name("Reflection Weight"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	uniform float bump_strength = 1.f [[
+		::anno::description("Specifies the strength of the bump."),
+		::anno::display_name("Bump Strength"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float2 texture_translate = float2(0.f) [[
+		::anno::description("Controls the position of the texture."),
+		::anno::display_name("Texture Translate"),
+		::anno::in_group("Transform")
+	]],
+	float texture_rotate = 0.f [[
+		::anno::description("Rotates angle of the texture in degrees."),
+		::anno::display_name("Texture Rotate"),
+		::anno::in_group("Transform"),
+		::anno::soft_range(0.f, 360.f)
+	]],
+	float2 texture_scale = float2(1.f) [[
+		::anno::description("Larger numbers increase the size."),
+		::anno::display_name("Texture Scale"),
+		::nvidia::core_definitions::dimension(float2(1.f, 1.f)),
+		::anno::in_group("Transform")
+	]],
+	uniform bool roundcorners_enable = false [[
+		::anno::description("Enables the round corner effect. Comes at a slight performance cost as additional raytracing calls are required to evaluate the round corner effect."),
+		::anno::display_name("Enable Round Corners"),
+		::anno::in_group("Round Corners")
+	]],
+	uniform float roundcorners_radius_mm = 1.5f [[
+		::anno::description("Radius of the rounded corners in millimeters."),
+		::anno::display_name("Round Corner Radius (mm)"),
+		::anno::in_group("Round Corners"),
+		::anno::soft_range(0.f, 10.f)
+	]],
+	uniform bool roundcorners_across_materials = true [[
+		::anno::description("Applies the round corner effect across different materials when enabled."),
+		::anno::display_name("Across Materials"),
+		::anno::in_group("Round Corners")
+	]],
+	uniform int uv_space_index = 0 [[
+		::anno::description("Uses selected UV space for material."),
+		::anno::display_name("UV Space Index"),
+		::anno::in_group("Advanced")
+	]])
+		[[
+			::anno::description(DESCRIPTION),
+			::anno::display_name("Dry Concrete"),
+			::anno::copyright_notice(COPYRIGHT),
+			::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "weathered", "wall", "exterior", "rough", "urban", "city", "dry", "damage", "concrete")),
+			::anno::thumbnail("./.thumbs/Concrete_Floor_Damage.Concrete_Floor_Damage.png"),
+			::anno::author("Nvidia vMaterials"),
+			::anno::contributor("Maik Rohland"),
+			::anno::contributor("Ruediger Raab")
+]]
+ = 
+	let {
+		bool tmp0 = false;
+		material_surface tmp1(::df::custom_curve_layer(0.0399999991f, 1.f, 5.f, ::math::pow(histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 11.f, float3(0.572548985f, 0.858824015f, 0.f), 11.f, true) : ::base::file_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.229999989f, ::math::lerp(0.790000021f, 0.620000005f, reflection_weight)), 2.20000005f), ::df::microfacet_ggx_smith_bsdf(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 11.f, float3(0.572548985f, 0.858824015f, 0.f), 11.f, true) : ::base::file_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, reflection_roughness) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 11.f, float3(0.572548985f, 0.858824015f, 0.f), 11.f, true) : ::base::file_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, reflection_roughness), histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 11.f, float3(0.572548985f, 0.858824015f, 0.f), 11.f, true) : ::base::file_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, reflection_roughness) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 11.f, float3(0.572548985f, 0.858824015f, 0.f), 11.f, true) : ::base::file_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, reflection_roughness), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect), ::df::weighted_layer(1.f, ::df::diffuse_reflection_bsdf(nvidia::core_definitions::blend_colors(nvidia::core_definitions::blend_colors(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_floor_damage_diff.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 11.f, float3(0.498039007f, 0.466666996f, 0.431373f), 11.f, true) : ::base::file_texture(texture_2d("./textures/concrete_floor_damage_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, stone_color, ::base::color_layer_overlay, 1.f).tint, color(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 11.f, float3(0.572548985f, 0.858824015f, 0.f), 11.f, true) : ::base::file_texture(texture_2d("./textures/concrete_floor_damage_multi_R_rough_G_ao.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1]), ::base::color_layer_overlay, -0.199999988f).tint, 0.f), bsdf(), infinite_tiling ? endless_normal(texture_2d("./textures/concrete_floor_damage_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 11.f, float3(0.501960993f, 0.498039007f, 0.882353008f), 11.f) : ::base::tangent_space_normal_texture(texture_2d("./textures/concrete_floor_damage_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), infinite_tiling ? endless_normal(texture_2d("./textures/concrete_floor_damage_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 11.f, float3(0.501960993f, 0.498039007f, 0.882353008f), 11.f) : ::base::tangent_space_normal_texture(texture_2d("./textures/concrete_floor_damage_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		color tmp3 = color(1.f, 1.f, 1.f);
+		material_geometry tmp5(float3(0.f), 1.f, roundcorners_enable ? ::state::rounded_corner_normal(roundcorners_radius_mm * 0.00100000005f, roundcorners_across_materials, 1.f) : ::state::normal());
+	} in
+		material(
+			thin_walled: tmp0,
+			surface: tmp1,
+			backface: tmp2,
+			ior: tmp3,
+			geometry: tmp5);
+
+export material Defined_Reflections_Damaged_Concrete(*)
+[[
+	::anno::display_name("Defined Reflections Damaged Concrete"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "weathered", "wall", "exterior", "rough", "urban", "city", "dry", "damage", "concrete")),
+	::anno::thumbnail("./.thumbs/Concrete_Floor_Damage.Defined_Reflections_Damaged_Concrete.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Concrete_Floor_Damage
+(
+	infinite_tiling: true,
+	stone_color: color(0.957370f, 0.932277f, 0.851252f),
+	reflection_roughness: 0.f,
+	reflection_weight: 1.f,
+	bump_strength: 1.f,
+	texture_translate: float2(0.0f),
+	texture_rotate: 0.0f,
+	texture_scale: float2(1.0f),
+	roundcorners_enable: false,
+	roundcorners_radius_mm: 1.5f,
+	roundcorners_across_materials: true,
+	uv_space_index: 0
+);
+
+export material Shiny_Damaged_Concrete(*)
+[[
+	::anno::display_name("Shiny Damaged Concrete"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "weathered", "wall", "exterior", "rough", "urban", "city", "shiny", "damage", "concrete")),
+	::anno::thumbnail("./.thumbs/Concrete_Floor_Damage.Shiny_Damaged_Concrete.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Concrete_Floor_Damage
+(
+	infinite_tiling: true,
+	stone_color: color(0.957370f, 0.932277f, 0.851252f),
+	reflection_roughness: 0.2f,
+	reflection_weight: 0.f,
+	bump_strength: 1.f,
+	texture_translate: float2(0.0f),
+	texture_rotate: 0.0f,
+	texture_scale: float2(1.0f),
+	roundcorners_enable: false,
+	roundcorners_radius_mm: 1.5f,
+	roundcorners_across_materials: true,
+	uv_space_index: 0
+);
+
+export material Soft_Reflections_Damaged_Concrete(*)
+[[
+	::anno::display_name("Soft Reflections Damaged Concrete"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "weathered", "wall", "exterior", "rough", "urban", "city", "soft", "damage", "concrete")),
+	::anno::thumbnail("./.thumbs/Concrete_Floor_Damage.Soft_Reflections_Damaged_Concrete.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Concrete_Floor_Damage
+(
+	infinite_tiling: true,
+	stone_color: color(0.957370f, 0.932277f, 0.851252f),
+	reflection_roughness: 0.65f,
+	reflection_weight: 0.75f,
+	bump_strength: 1.f,
+	texture_translate: float2(0.0f),
+	texture_rotate: 0.0f,
+	texture_scale: float2(1.0f),
+	roundcorners_enable: false,
+	roundcorners_radius_mm: 1.5f,
+	roundcorners_across_materials: true,
+	uv_space_index: 0
+);
+
+export material Matt_Damaged_Concrete(*)
+[[
+	::anno::display_name("Matt Damaged Concrete"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "weathered", "wall", "exterior", "rough", "urban", "city", "soft", "damage", "concrete")),
+	::anno::thumbnail("./.thumbs/Concrete_Floor_Damage.Matt_Damaged_Concrete.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Concrete_Floor_Damage
+(
+	infinite_tiling: true,
+	stone_color: color(0.957370f, 0.932277f, 0.851252f),
+	reflection_roughness: 1.f,
+	reflection_weight: 0.f,
+	bump_strength: 1.f,
+	texture_translate: float2(0.0f),
+	texture_rotate: 0.0f,
+	texture_scale: float2(1.0f),
+	roundcorners_enable: false,
+	roundcorners_radius_mm: 1.5f,
+	roundcorners_across_materials: true,
+	uv_space_index: 0
+);
+
+export material Dark_Damaged_Concrete(*)
+[[
+	::anno::display_name("Dark Damaged Concrete"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "weathered", "wall", "exterior", "rough", "urban", "city", "dark", "damage", "concrete")),
+	::anno::thumbnail("./.thumbs/Concrete_Floor_Damage.Dark_Damaged_Concrete.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Concrete_Floor_Damage
+(
+	infinite_tiling: true,
+	stone_color: color(0.157281f, 0.157281f, 0.157281f),
+	reflection_roughness: .6f,
+	reflection_weight: 0.f,
+	bump_strength: 0.35f,
+	texture_translate: float2(0.0f),
+	texture_rotate: 0.0f,
+	texture_scale: float2(1.0f),
+	roundcorners_enable: false,
+	roundcorners_radius_mm: 1.5f,
+	roundcorners_across_materials: true,
+	uv_space_index: 0
+);
+
+export material Dark_Rough_Concrete(*)
+[[
+	::anno::display_name("Dark Rough Concrete"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "weathered", "wall", "exterior", "rough", "urban", "city", "dark", "damage", "concrete")),
+	::anno::thumbnail("./.thumbs/Concrete_Floor_Damage.Dark_Rough_Concrete.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Concrete_Floor_Damage
+(
+	infinite_tiling: true,
+	stone_color: color(0.157281f, 0.157281f, 0.157281f),
+	reflection_roughness: 1.f,
+	reflection_weight: 1.f,
+	bump_strength: 1.f,
+	texture_translate: float2(0.0f),
+	texture_rotate: 0.0f,
+	texture_scale: float2(1.0f),
+	roundcorners_enable: false,
+	roundcorners_radius_mm: 1.5f,
+	roundcorners_across_materials: true,
+	uv_space_index: 0
+);

code/third_party/vMaterials_2/Concrete/Concrete_Formed.mdl

@@ -0,0 +1,255 @@
+/******************************************************************************
+ *     Copyright 2024 NVIDIA Corporation. All rights reserved.
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA's Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+mdl 1.5;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::dimension;
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+
+float remap_xy_to_0_1(float input, float x, float y)
+{
+	return (input - x)/(y - x);
+}
+
+float histogram_range(float input, float range = 1.0f, float position = 0.5f)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+float histogram_scan_small(float input, float width, float position)
+{	
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(0.0, 1.0 - width, position),
+					::math::lerp(width, 1.0 , position)),
+				0.0,
+				1.0);
+}
+
+::base::texture_coordinate_info transform_coordinate_2(
+	float4x4 transform										 
+		[[ ::anno::description("A transformation to be applied to the source coordinates. rotation_translation_scale() is a suggested means to compute the transformation matrix.") ]],
+	::base::texture_coordinate_info coordinate = ::base::texture_coordinate_info()
+		[[ ::anno::description("Coordinate, typically sourced from coordinate_source or coordinate_projection.") ]]
+) [[ 
+	::anno::description("Transform a texture coordinate by a matrix.") ,
+	::anno::noinline()
+  ]]
+{
+	// Version 2
+	float4 r_position = transform * float4(coordinate.position.x,coordinate.position.y,coordinate.position.z,1);
+	//Try aproximating it for the case that the rotation is only aroud z and assuming the texture layout is nice and z is ~constant.
+	//just pretend there is no other rotation happening
+	//get rid of scaling and translation. Then extract fields where sin and cos would be in a simple 2d transform around z.
+	float4 u = transform[0];
+	float3 ru = ::math::normalize(float3(u.x,u.y,u.z));
+	float cos =  ru.x; 
+	float sin =  -ru.y;
+	//TODO: at least also handle sign of z?
+	//TODO: handle tangent becoming 0 
+	
+	
+	return ::base::texture_coordinate_info(
+		float3(r_position.x,r_position.y,r_position.z),
+		::math::normalize(cos * coordinate.tangent_u - sin * coordinate.tangent_v),
+		::math::normalize(cos * coordinate.tangent_v + sin * coordinate.tangent_u));
+}
+
+::base::texture_coordinate_info vmat_transform(
+								float2 translation = float2(0.0, 0.0),
+								float rotation	 = 0.0,				// rotation in degrees
+								float2 scaling	 = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space	   = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.			 ,  0. ,	 0.,
+			 0.			, 1.0 /scaling.y ,  0. ,	 0.,
+			 0.			, 0.			 ,  1.0,	 0.,
+			 translation.x , translation.y  ,  0.0,	 1.);
+
+	float s = ::math::sin(rotation_rad);
+	float c = ::math::cos(rotation_rad);
+	float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return transform_coordinate_2(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+
+export material Concrete_Formed(
+	float diffuse_brightness = 0.82f [[
+		::anno::description("Adjusts the lightness of the material."),
+		::anno::display_name("Diffuse Brightness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float roughness = 0.06f [[
+		::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+		::anno::display_name("Roughness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	uniform float bump_strength = 1.f [[
+		::anno::description("Specifies the strength of the bump."),
+		::anno::display_name("Bump Strength"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float2 texture_translate = float2(0.f) [[
+		::anno::description("Controls the position of the texture."),
+		::anno::display_name("Texture Translate"),
+		::anno::in_group("Transform")
+	]],
+	float texture_rotate = 0.f [[
+		::anno::description("Rotates angle of the texture in degrees."),
+		::anno::display_name("Texture Rotate"),
+		::anno::in_group("Transform")
+	]],
+	float2 texture_scale = float2(1.0f) [[
+		::anno::description("Larger numbers increase the size."),
+		::anno::display_name("Texture Scale"),
+		::anno::in_group("Transform"),
+		::nvidia::core_definitions::dimension(float2(1.4f, 1.4f))
+	]],
+	uniform bool round_corners = false [[
+		::anno::description("Enables the round corner effect. Comes at a slight performance cost as additional raytracing calls are required to evaluate the round corner effect."),
+		::anno::display_name("Round Corners"),
+		::anno::in_group("Round Corners")
+	]],
+	uniform float radius = 1.5f [[
+		::anno::description("Radius of the rounded corners."),
+		::anno::display_name("Radius"),
+		::anno::in_group("Round Corners"),
+		::anno::soft_range(0.f, 10.f)
+	]],
+	uniform bool across_materials = true [[
+		::anno::description("Applies the round corner effect across different materials when enabled."),
+		::anno::display_name("Across Materials"),
+		::anno::in_group("Round Corners")
+	]],
+	uniform int uv_space_index = 0 [[
+		::anno::description("Uses selected UV space for material."),
+		::anno::display_name("UV Space Index"),
+		::anno::in_group("Advanced")
+	]]
+)
+[[
+	::anno::description("A formed concrete material with wooden texture imprint."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Formed Concrete Shiny"),
+	::anno::key_words(string[]("concrete", "architecture", "hard", "solid", "artificial", "interior", "exterior", "construction", "wood", "pattern", "neutral", "gray")),
+	::anno::thumbnail("./.thumbs/Concrete_Formed.Concrete_Formed.png"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = 
+	let {
+		bool tmp0 = false;
+		material_surface tmp1(df::custom_curve_layer(0.0399999991f, 1.f, 5.f, math::pow(histogram_scan_small(float3(base::file_texture(texture_2d("./textures/conrete_formed_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), tex::wrap_repeat, tex::wrap_repeat, false).tint)[0], 0.660000026f, 0.649999976f), 2.20000005f), df::microfacet_ggx_smith_bsdf(histogram_range(float3(base::file_texture(texture_2d("./textures/conrete_formed_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), tex::wrap_repeat, tex::wrap_repeat, false).tint)[1], math::lerp(0.660000026f, 1.f, roughness), math::lerp(0.5f, 0.800000012f, roughness)) * histogram_range(float3(base::file_texture(texture_2d("./textures/conrete_formed_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), tex::wrap_repeat, tex::wrap_repeat, false).tint)[1], math::lerp(0.660000026f, 1.f, roughness), math::lerp(0.5f, 0.800000012f, roughness)), histogram_range(float3(base::file_texture(texture_2d("./textures/conrete_formed_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), tex::wrap_repeat, tex::wrap_repeat, false).tint)[1], math::lerp(0.660000026f, 1.f, roughness), math::lerp(0.5f, 0.800000012f, roughness)) * histogram_range(float3(base::file_texture(texture_2d("./textures/conrete_formed_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), tex::wrap_repeat, tex::wrap_repeat, false).tint)[1], math::lerp(0.660000026f, 1.f, roughness), math::lerp(0.5f, 0.800000012f, roughness)), color(1.f, 1.f, 1.f), state::texture_tangent_u(0), df::scatter_reflect), df::weighted_layer(1.f, df::diffuse_reflection_bsdf(base::file_texture(texture_2d("./textures/conrete_formed_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(math::lerp(0.641000032f, 1.f, diffuse_brightness)), base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), tex::wrap_repeat, tex::wrap_repeat, false).tint, 0.f), bsdf(), base::tangent_space_normal_texture(texture_2d("./textures/conrete_formed_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), tex::wrap_repeat, tex::wrap_repeat, false, 1.f, 0.f)), base::tangent_space_normal_texture(texture_2d("./textures/conrete_formed_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), tex::wrap_repeat, tex::wrap_repeat, false, 1.f, 0.f)), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		color tmp3 = color(1.f, 1.f, 1.f);
+		material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
+		material_geometry tmp5(float3(0.f), 1.f, round_corners ? state::rounded_corner_normal(radius * 0.00100000005f, across_materials, 1.f) : state::normal());
+		hair_bsdf tmp6 = hair_bsdf();
+	} in
+		material(
+			thin_walled: tmp0,
+			surface: tmp1,
+			backface: tmp2,
+			ior: tmp3,
+			volume: tmp4,
+			geometry: tmp5,
+			hair: tmp6);
+
+export material Concrete_Formed_Rough(*)
+[[
+	::anno::description("A formed concrete material with wooden texture imprint."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Formed Concrete Rough"),
+	::anno::key_words(string[]("concrete", "architecture", "hard", "solid", "artificial", "interior", "exterior", "construction", "wood", "pattern", "neutral", "gray")),
+	::anno::thumbnail("./.thumbs/Concrete_Formed.Concrete_Formed_Rough.png"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = Concrete_Formed(
+	diffuse_brightness:	0.55f,
+	roughness:			0.8f,
+	bump_strength:		1.0f,
+	texture_translate:	float2(0.0f),
+	texture_rotate:		0.0f,
+	texture_scale:		float2(1.0f),
+	round_corners:		false,
+	radius:				1.5f,
+	across_materials:	false,
+	uv_space_index:		0
+
+);
+
+
+
+
+
+

code/third_party/vMaterials_2/Concrete/Concrete_Polished.mdl

@@ -0,0 +1,416 @@
+/******************************************************************************
+ *	        Copyright 2024 NVIDIA Corporation. All rights reserved.           *
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA's Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+mdl 1.5;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+const string DESCRIPTION = "A fine polished concrete material.";
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+
+float uint2float(int x)
+{
+	return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+int lowbias32(int x)
+{
+	x ^= x >>> 16;
+	x *= 0x7feb352d;
+	x ^= x >>> 15;
+	x *= 0x846ca68b;
+	x ^= x >>> 16;
+	return x;
+}
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+	return ret_val;
+}	
+
+float3 srgb2rgb(float3 val) 
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;	 // patch scale inside example texture
+	float CON = 1.0f;
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m*float(CON))
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m*float(CON))
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m*float(CON));
+	else
+		O = (W[0] =	  -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m*float(CON))
+		  + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m*float(CON))
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m*float(CON));
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+
+ float3 endless_normal(
+	uniform texture_2d texture = texture_2d(),
+	float factor = 1.0,
+	bool flip_tangent_u = false,
+	bool flip_tangent_v = false,
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0
+)
+{
+	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
+	float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
+	
+	if (flip_tangent_u)
+		transformed_tangent_u=-transformed_tangent_u;
+	if (flip_tangent_v)
+		transformed_tangent_v=-transformed_tangent_v;
+
+	// normalized Lookup
+	float3 tangent_space_normal =
+		 (nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		) - 0.5) * (2.0 * factor);
+		
+		 
+	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
+		  uvw.tangent_v * tangent_space_normal.y +
+		  ::state::normal()*1.0); 
+}
+
+ color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+
+float remap_xy_to_0_1(float input, float x, float y)
+{
+	return (input - x)/(y - x);
+}
+
+float histogram_scan_small(float input, float width, float position)
+{	
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(0.0, 1.0 - width, position),
+					::math::lerp(width, 1.0 , position)),
+				0.0,
+				1.0);
+}
+
+float histogram_range(float input, float range = 1.0f, float position = 0.5f)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+
+
+::base::texture_coordinate_info transform_coordinate_2(
+	float4x4 transform										 
+		[[ ::anno::description("A transformation to be applied to the source coordinates. rotation_translation_scale() is a suggested means to compute the transformation matrix.") ]],
+	::base::texture_coordinate_info coordinate = ::base::texture_coordinate_info()
+		[[ ::anno::description("Coordinate, typically sourced from coordinate_source or coordinate_projection.") ]]
+) [[ 
+	::anno::description("Transform a texture coordinate by a matrix.") ,
+	::anno::noinline()
+  ]]
+{
+	// Version 2
+	float4 r_position = transform * float4(coordinate.position.x,coordinate.position.y,coordinate.position.z,1);
+	//Try aproximating it for the case that the rotation is only aroud z and assuming the texture layout is nice and z is ~constant.
+	//just pretend there is no other rotation happening
+	//get rid of scaling and translation. Then extract fields where sin and cos would be in a simple 2d transform around z.
+	float4 u = transform[0];
+	float3 ru = ::math::normalize(float3(u.x,u.y,u.z));
+	float cos =  ru.x; 
+	float sin =  -ru.y;
+	//TODO: at least also handle sign of z?
+	//TODO: handle tangent becoming 0 
+	
+	
+	return ::base::texture_coordinate_info(
+		float3(r_position.x,r_position.y,r_position.z),
+		::math::normalize(cos * coordinate.tangent_u - sin * coordinate.tangent_v),
+		::math::normalize(cos * coordinate.tangent_v + sin * coordinate.tangent_u));
+}
+
+::base::texture_coordinate_info vmat_transform(
+								float2 translation = float2(0.0, 0.0),
+								float rotation	 = 0.0,				// rotation in degrees
+								float2 scaling	 = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space	   = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.			 ,  0. ,	 0.,
+			 0.			, 1.0 /scaling.y ,  0. ,	 0.,
+			 0.			, 0.			 ,  1.0,	 0.,
+			 translation.x , translation.y  ,  0.0,	 1.);
+
+	float s = ::math::sin(rotation_rad);
+	float c = ::math::cos(rotation_rad);
+	float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return transform_coordinate_2(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+
+export material Concrete_Polished(
+		uniform bool infinite_tiling = false [[
+		::anno::description("Enables infinite tiling feature which removes repeating texture patterns. Note that depending on the material this feature changes the appearance of the material slightly."),
+		::anno::display_name("Infinite Tiling"),
+		::anno::in_group("Appearance")
+	]],
+	float diffuse_brightness = 1.f [[
+		::anno::description("Adjusts the lightness of the material."),
+		::anno::display_name("Diffuse Brightness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float reflection_weight = 1.f [[
+		::anno::description("."),
+		::anno::display_name("Reflection Weight"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float reflection_roughness = 0.2f [[
+		::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+		::anno::display_name("Roughness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float reflection_variation = 0.8f [[
+		::anno::description("Amount of variation applied to the roughness, higher numbers lead to non uniform reflections of the material."),
+		::anno::display_name("Reflection Variation"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	uniform float bump_strength = 0.5f [[
+		::anno::description("Determines the degree of bumpiness."),
+		::anno::display_name("Bump Strength"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 2.f)
+	]],
+	float2 texture_translate = float2(0.f) [[
+		::anno::description("Controls the position of the texture."),
+		::anno::display_name("Texture Translate"),
+		::anno::in_group("Transform")
+	]],
+	float texture_rotate = 0.f [[
+		::anno::description("Rotates angle of the texture in degrees."),
+		::anno::display_name("Texture Rotate"),
+		::anno::in_group("Transform"),
+		::anno::soft_range(0.f, 360.f)
+	]],
+	float2 texture_scale = float2(1.0f) [[
+		::anno::description("Larger numbers increase the size."),
+		::anno::display_name("Texture Scale"),
+		::nvidia::core_definitions::dimension(float2(1.0f, 1.0f)),
+		::anno::in_group("Transform")
+	]],
+	uniform bool round_corners = false [[
+		::anno::description("Enables the round corner effect. Comes at a slight performance cost as additional raytracing calls are required to evaluate the round corner effect."),
+		::anno::display_name("Round Corners"),
+		::anno::in_group("Round Corners")
+	]],
+	uniform float radius_mm = 1.5f [[
+		::anno::description("Radius of the rounded corners."),
+		::anno::display_name("Radius"),
+		::anno::in_group("Round Corners"),
+		::anno::soft_range(0.f, 10.f)
+	]],
+	uniform bool across_materials = true [[
+		::anno::description("Applies the round corner effect across different materials when enabled."),
+		::anno::display_name("Across Materials"),
+		::anno::in_group("Round Corners")
+	]],
+		uniform int uv_space_index = 0 [[
+		::anno::description("Uses selected UV space for material."),
+		::anno::display_name("UV Space Index"),
+		::anno::in_group("Advanced")
+	]]
+)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Polished"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Polished.Concrete_Polished.png"),
+	::anno::key_words(string[]("concrete", "polished", "smooth", "infinite", "tiling", "new", "artificial", "construction", "interior", "architecture", "gray")),
+	::anno::in_group("Concrete"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = 
+	let {
+		bool tmp0 = false;
+		material_surface tmp1(::df::custom_curve_layer(0.04f, 1.f, 5.f, ::math::pow(histogram_scan_small(float3(infinite_tiling ? endless_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.14100003f, float3(0.937255025f, 0.321568996f, 0.f), 2.14100003f, false) : ::base::file_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], ::math::lerp(0.0340000018f, 0.824000061f, reflection_weight), 1.f), 2.20000005f), ::df::microfacet_ggx_smith_bsdf(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.14100003f, float3(0.937255025f, 0.321568996f, 0.f), 2.14100003f, false) : ::base::file_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], ::math::lerp(0.205000013f, 1.f, reflection_variation), ::math::lerp(0.465000033f, 0.852000058f, reflection_roughness)) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.14100003f, float3(0.937255025f, 0.321568996f, 0.f), 2.14100003f, false) : ::base::file_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], ::math::lerp(0.205000013f, 1.f, reflection_variation), ::math::lerp(0.465000033f, 0.852000058f, reflection_roughness)), histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.14100003f, float3(0.937255025f, 0.321568996f, 0.f), 2.14100003f, false) : ::base::file_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], ::math::lerp(0.205000013f, 1.f, reflection_variation), ::math::lerp(0.465000033f, 0.852000058f, reflection_roughness)) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.14100003f, float3(0.937255025f, 0.321568996f, 0.f), 2.14100003f, false) : ::base::file_texture(texture_2d("./textures/conrete_polished_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], ::math::lerp(0.205000013f, 1.f, reflection_variation), ::math::lerp(0.465000033f, 0.852000058f, reflection_roughness)), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect), ::df::weighted_layer(1.f, ::df::diffuse_reflection_bsdf(nvidia::core_definitions::blend_colors(infinite_tiling ? endless_texture(texture_2d("./textures/conrete_polished_diff.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.14100003f, float3(0.470587999f, 0.470587999f, 0.454901993f), 2.14100003f, true) : ::base::file_texture(texture_2d("./textures/conrete_polished_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, color(0.f, 0.f, 0.f), ::base::color_layer_multiply, ::math::lerp(0.300000012f, 0.f, diffuse_brightness)).tint, 0.f), bsdf(), infinite_tiling ? endless_normal(texture_2d("./textures/conrete_polished_norm.jpg", ::tex::gamma_linear), bump_strength * 2.f, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.14100003f, float3(0.5f, 0.5f, 1.f), 2.14100003f) : ::base::tangent_space_normal_texture(texture_2d("./textures/conrete_polished_norm.jpg", ::tex::gamma_linear), bump_strength * 2.f, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), infinite_tiling ? endless_normal(texture_2d("./textures/conrete_polished_norm.jpg", ::tex::gamma_linear), bump_strength * 2.f, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.14100003f, float3(0.5f, 0.5f, 1.f), 2.14100003f) : ::base::tangent_space_normal_texture(texture_2d("./textures/conrete_polished_norm.jpg", ::tex::gamma_linear), bump_strength * 2.f, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		color tmp3 = color(1.f, 1.f, 1.f);
+		material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
+		material_geometry tmp5(float3(0.f), 1.f, round_corners ? ::state::rounded_corner_normal(radius_mm * 0.00100000005f, across_materials, 1.f) : ::state::normal());
+		hair_bsdf tmp6 = hair_bsdf();
+	} in
+		material(
+			thin_walled: tmp0,
+			surface: tmp1,
+			backface: tmp2,
+			ior: tmp3,
+			volume: tmp4,
+			geometry: tmp5,
+			hair: tmp6);
+
+
+export material Concrete_Polished_Matte(*)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Polished Matte"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Polished.Concrete_Polished_Matte.png"),
+	::anno::key_words(string[]("concrete", "polished", "infinite", "tiling", "new", "artificial", "construction", "interior", "architecture", "rough", "matte", "gray")),
+	::anno::in_group("Concrete"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Concrete_Polished
+(
+	infinite_tiling:	true,
+	diffuse_brightness:	1.0f,
+	reflection_weight:	1.0f,
+	reflection_roughness:	0.8f,
+	reflection_variation:	1.0f,
+	bump_strength:		1.0f,
+	texture_translate:	float2(0.0f),
+	texture_rotate:		0.0f,
+	
+	texture_scale:		float2(1.0f),
+	round_corners:		false,
+	radius_mm:			1.5f,
+	across_materials:	false,
+	uv_space_index:		0
+);

code/third_party/vMaterials_2/Concrete/Concrete_Precast.mdl

@@ -0,0 +1,1288 @@
+/******************************************************************************
+ *	        Copyright 2024 NVIDIA Corporation. All rights reserved.           *
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA's Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+mdl 1.4;
+
+
+import ::state::*;
+import ::base::*;
+import ::tex::*;
+import ::anno::*;
+import ::nvidia::core_definitions::*;
+
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+
+export material Concrete_Precast(
+    
+        color concrete_color = color ( 0.57f, 0.57f, 0.57f )
+        [[
+            ::anno::display_name("Concrete Color"),
+            ::anno::description ( "Choose the color of the Concrete."),
+            ::anno::in_group("Appearance")
+        ]],
+        float grunge_amount =  0.20f
+        [[
+            ::anno::display_name("Grunge Amount"),
+            ::anno::description("higher values results in more noise difference in the color of the concrete."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        float reflection_roughness =  0.5f
+        [[
+            ::anno::display_name("Roughness"),
+            ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float bump_strength =  .5f
+        [[
+            ::anno::display_name("Bump Strength"),
+            ::anno::description("Specifies the strength of the bump."),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float2 texture_translate =  float2 ( 0.f)
+        [[
+            ::anno::display_name("Translate"),
+            ::anno::description("Controls the position of the texture."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float texture_rotate =  0.f
+        [[
+            ::anno::display_name("Rotate"),
+            ::anno::description("Rotate angle of the texture in degrees."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float2 texture_scale =  float2 ( 1.f , 1.f)
+        [[
+            ::anno::display_name("Scale"),
+            ::anno::description("Larger numbers increase the texture size."),
+			::nvidia::core_definitions::dimension(float2(1.0f, 1.0f)),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float ior =  1.5f
+        [[
+            ::anno::display_name("IOR"),
+            ::anno::description("Index of refraction."),
+            ::anno::soft_range(1.0,4.0),
+            ::anno::in_group("Advanced")
+        ]],
+        uniform int uv_space_index = 0
+        [[
+            ::anno::display_name("UV Space Index"),
+            ::anno::description("UV space index."),
+            ::anno::hard_range(0,3),
+            ::anno::in_group("Advanced")
+        ]])
+    [[
+    ::anno::display_name("Concrete Precast - White"),
+    ::anno::description("A material for (pre)cast concrete formwork panels that have holes as part of the manufacturing process."),
+    ::anno::author("NVIDIA vMaterials"),
+    ::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Precast.concrete_precast_gray.png"),
+	::anno::key_words(string[]("floor", "cast", "concrete", "precast", "construction", "cement", "white", "unfinished", "rough"))
+    ]]= 
+    ::nvidia::core_definitions::flex_material_v2(
+        base_color:  ::nvidia::core_definitions::blend_colors(
+                color_1: ::nvidia::core_definitions::blend_colors(
+                    color_1: concrete_color,
+                color_2: ::nvidia::core_definitions::file_texture(
+                    texture: texture_2d ( "./textures/precastconcrete_diff.png" , ::tex::gamma_srgb) ,
+                    mono_source:  ::base::mono_average,
+                    brightness:  1.f,
+                    contrast:  1.f,
+                    scaling:  0.5f/ texture_scale,
+                    translation:  texture_translate,
+                    rotation:  texture_rotate,
+                    clip:  false,
+                    texture_space:  uv_space_index,
+                    invert:  false).tint,
+                mode: ::base::color_layer_overlay,
+                weight: 1.0f ).tint,
+            color_2:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_grunge_mask.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            mode: ::base::color_layer_multiply,
+            weight: grunge_amount ).tint,
+        diffuse_roughness:  0.f,
+        is_metal:  false,
+        reflectivity: 1.0f,
+        reflection_roughness:  ::nvidia::core_definitions::blend_colors(
+            color_1:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_rough.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            color_2: color ( reflection_roughness ),
+            mode: ::base::color_layer_overlay,
+            weight: 1.0f ).mono,
+        anisotropy:  0.f,
+        anisotropy_rotation:  0.f,
+        transparency:  0.f,
+        transmission_color:  color ( 1.f , 1.f , 1.f),
+        volume_color:  color ( 1.f , 1.f , 1.f),
+        transmission_roughness:  0.f,
+        base_thickness:  0.1f,
+        ior:  ior,
+        thin_walled:  false,
+        normal:  ::nvidia::core_definitions::normalmap_texture(
+            texture:  texture_2d ( "./textures/precastconcrete_norm.jpg" , ::tex::gamma_linear),
+            scaling: 0.5f/ texture_scale,
+            translation:  texture_translate,
+            rotation:  texture_rotate,
+            clip:  false,
+            factor: bump_strength * 0.20f,
+            texture_space:  uv_space_index));
+
+
+
+export material concrete_precast_light_gray(
+    
+        color concrete_color = color ( 0.68f , 0.68f , 0.68f )
+        [[
+            ::anno::display_name("Concrete Color"),
+            ::anno::description ( "Choose the color of the Concrete."),
+            ::anno::in_group("Appearance")
+        ]],
+        float grunge_amount =  0.40f
+        [[
+            ::anno::display_name("Grunge Amount"),
+            ::anno::description("higher values results in more noise difference in the color of the concrete."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        float reflection_roughness =  0.15f
+        [[
+            ::anno::display_name("Roughness"),
+            ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float bump_strength =  1.f
+        [[
+            ::anno::display_name("Bump Strength"),
+            ::anno::description("Specifies the strength of the bump."),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float2 texture_translate =  float2 ( 0.f)
+        [[
+            ::anno::display_name("Translate"),
+            ::anno::description("Controls the position of the texture."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float texture_rotate =  0.f
+        [[
+            ::anno::display_name("Rotate"),
+            ::anno::description("Rotate angle of the texture in degrees."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float2 texture_scale =  float2 ( 1.f , 1.f)
+        [[
+            ::anno::display_name("Scale"),
+            ::anno::description("Larger numbers increase the texture size."),
+            ::anno::in_group("Transform"),
+			::nvidia::core_definitions::dimension(float2(1.0f, 1.0f))
+        ]],
+        uniform float ior =  1.5f
+        [[
+            ::anno::display_name("IOR"),
+            ::anno::description("Index of refraction."),
+            ::anno::soft_range(1.0,4.0),
+            ::anno::in_group("Advanced")
+        ]],
+        uniform int uv_space_index = 0
+        [[
+            ::anno::display_name("UV Space Index"),
+            ::anno::description("UV space index."),
+            ::anno::hard_range(0,3),
+            ::anno::in_group("Advanced")
+        ]])
+    [[
+		::anno::display_name("Concrete Precast - Light Gray"),
+		::anno::description("A material for (pre)cast concrete formwork panels that have holes as part of the manufacturing process."),
+		::anno::author("NVIDIA vMaterials"),
+		::anno::copyright_notice(COPYRIGHT),
+		::anno::thumbnail("./.thumbs/Concrete_Precast.concrete_precast_light_gray.png"),
+		::anno::key_words(string[]("floor", "cast", "concrete", "precast", "construction", "cement", "gray", "light gray", "light", "unfinished", "rough"))
+    ]]= 
+    ::nvidia::core_definitions::flex_material_v2(
+        base_color:  ::nvidia::core_definitions::blend_colors(
+                color_1: ::nvidia::core_definitions::blend_colors(
+                    color_1: concrete_color,
+                color_2: ::nvidia::core_definitions::file_texture(
+                    texture: texture_2d ( "./textures/precastconcrete_diff.png" , ::tex::gamma_srgb) ,
+                    mono_source:  ::base::mono_average,
+                    brightness:  1.f,
+                    contrast:  1.f,
+                    scaling:  0.5f/ texture_scale,
+                    translation:  texture_translate,
+                    rotation:  texture_rotate,
+                    clip:  false,
+                    texture_space:  uv_space_index,
+                    invert:  false).tint,
+                mode: ::base::color_layer_overlay,
+                weight: 1.0f ).tint,
+            color_2:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_grunge_mask.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            mode: ::base::color_layer_multiply,
+            weight: grunge_amount ).tint,
+        diffuse_roughness:  0.f,
+        is_metal:  false,
+        reflectivity: 1.0f,
+        reflection_roughness:  ::nvidia::core_definitions::blend_colors(
+            color_1: ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_rough.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            color_2: color (reflection_roughness),
+            mode: ::base::color_layer_overlay,
+            weight: 1.0f ).mono,
+        anisotropy:  0.f,
+        anisotropy_rotation:  0.f,
+        transparency:  0.f,
+        transmission_color:  color ( 1.f , 1.f , 1.f),
+        volume_color:  color ( 1.f , 1.f , 1.f),
+        transmission_roughness:  0.f,
+        base_thickness:  0.1f,
+        ior:  ior,
+        thin_walled:  false,
+        normal:  ::nvidia::core_definitions::normalmap_texture(
+            texture:  texture_2d ( "./textures/precastconcrete_norm.jpg" , ::tex::gamma_linear),
+            scaling: 0.5f/ texture_scale,
+            translation:  texture_translate,
+            rotation:  texture_rotate,
+            clip:  false,
+            factor: bump_strength * 0.20f,
+            texture_space:  uv_space_index));
+
+
+export material concrete_precast_ivory(
+    
+        color concrete_color = color ( 0.883f , 0.851f , 0.797f )
+        [[
+            ::anno::display_name("Concrete Color"),
+            ::anno::description ( "Choose the color of the Concrete."),
+            ::anno::in_group("Appearance")
+        ]],
+        float grunge_amount =  0.30f
+        [[
+            ::anno::display_name("Grunge Amount"),
+            ::anno::description("higher values results in more noise difference in the color of the concrete."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        float reflection_roughness =  0.15f
+        [[
+            ::anno::display_name("Roughness"),
+            ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float bump_strength =  1.f
+        [[
+            ::anno::display_name("Bump Strength"),
+            ::anno::description("Specifies the strength of the bump."),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float2 texture_translate =  float2 ( 0.f)
+        [[
+            ::anno::display_name("Translate"),
+            ::anno::description("Controls the position of the texture."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float texture_rotate =  0.f
+        [[
+            ::anno::display_name("Rotate"),
+            ::anno::description("Rotate angle of the texture in degrees."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float2 texture_scale =  float2 ( 1.f , 1.f)
+        [[
+            ::anno::display_name("Scale"),
+            ::anno::description("Larger numbers increase the texture size."),
+            ::anno::in_group("Transform"),
+			::nvidia::core_definitions::dimension(float2(1.0f, 1.0f))
+        ]],
+        uniform float ior =  1.5f
+        [[
+            ::anno::display_name("IOR"),
+            ::anno::description("Index of refraction."),
+            ::anno::soft_range(1.0,4.0),
+            ::anno::in_group("Advanced")
+        ]],
+        uniform int uv_space_index = 0
+        [[
+            ::anno::display_name("UV Space Index"),
+            ::anno::description("UV space index."),
+            ::anno::hard_range(0,3),
+            ::anno::in_group("Advanced")
+        ]])
+    [[
+		::anno::display_name("Concrete Precast - Ivory"),
+		::anno::description("A material for (pre)cast concrete formwork panels that have holes as part of the manufacturing process."),
+		::anno::author("NVIDIA vMaterials"),
+		::anno::copyright_notice(COPYRIGHT),
+		::anno::thumbnail("./.thumbs/Concrete_Precast.concrete_precast_ivory.png"),
+		::anno::key_words(string[]("floor", "cast", "concrete", "precast", "construction", "cement", "white", "ivory", "unfinished", "rough"))
+    ]]= 
+    ::nvidia::core_definitions::flex_material_v2(
+        base_color:  ::nvidia::core_definitions::blend_colors(
+                color_1: ::nvidia::core_definitions::blend_colors(
+                    color_1: concrete_color,
+                color_2: ::nvidia::core_definitions::file_texture(
+                    texture: texture_2d ( "./textures/precastconcrete_diff.png" , ::tex::gamma_srgb) ,
+                    mono_source:  ::base::mono_average,
+                    brightness:  1.f,
+                    contrast:  1.f,
+                    scaling:  0.5f/ texture_scale,
+                    translation:  texture_translate,
+                    rotation:  texture_rotate,
+                    clip:  false,
+                    texture_space:  uv_space_index,
+                    invert:  false).tint,
+                mode: ::base::color_layer_overlay,
+                weight: 1.0f ).tint,
+            color_2:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_grunge_mask.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            mode: ::base::color_layer_multiply,
+            weight: grunge_amount ).tint,
+        diffuse_roughness:  0.f,
+        is_metal:  false,
+        reflectivity: 1.0f,
+        reflection_roughness:  ::nvidia::core_definitions::blend_colors(
+            color_1: ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_rough.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            color_2: color (reflection_roughness),
+            mode: ::base::color_layer_overlay,
+            weight: 1.0f ).mono,
+        anisotropy:  0.f,
+        anisotropy_rotation:  0.f,
+        transparency:  0.f,
+        transmission_color:  color ( 1.f , 1.f , 1.f),
+        volume_color:  color ( 1.f , 1.f , 1.f),
+        transmission_roughness:  0.f,
+        base_thickness:  0.1f,
+        ior:  ior,
+        thin_walled:  false,
+        normal:  ::nvidia::core_definitions::normalmap_texture(
+            texture:  texture_2d ( "./textures/precastconcrete_norm.jpg" , ::tex::gamma_linear),
+            scaling: 0.5f/ texture_scale,
+            translation:  texture_translate,
+            rotation:  texture_rotate,
+            clip:  false,
+            factor: bump_strength * 0.20f,
+            texture_space:  uv_space_index));
+
+
+
+export material concrete_precast_light_warm_gray(
+    
+        color concrete_color = color (0.932f , 0.859f , 0.797f )
+        [[
+            ::anno::display_name("Concrete Color"),
+            ::anno::description ( "Choose the color of the Concrete."),
+            ::anno::in_group("Appearance")
+        ]],
+        float grunge_amount =  0.55f
+        [[
+            ::anno::display_name("Grunge Amount"),
+            ::anno::description("higher values results in more noise difference in the color of the concrete."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        float reflection_roughness =  0.15f
+        [[
+            ::anno::display_name("Roughness"),
+            ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float bump_strength =  1.f
+        [[
+            ::anno::display_name("Bump Strength"),
+            ::anno::description("Specifies the strength of the bump."),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float2 texture_translate =  float2 ( 0.f)
+        [[
+            ::anno::display_name("Translate"),
+            ::anno::description("Controls the position of the texture."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float texture_rotate =  0.f
+        [[
+            ::anno::display_name("Rotate"),
+            ::anno::description("Rotate angle of the texture in degrees."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float2 texture_scale =  float2 ( 1.f , 1.f)
+        [[
+            ::anno::display_name("Scale"),
+            ::anno::description("Larger numbers increase the texture size."),
+            ::anno::in_group("Transform"),
+			::nvidia::core_definitions::dimension(float2(1.0f, 1.0f))
+        ]],
+        uniform float ior =  1.5f
+        [[
+            ::anno::display_name("IOR"),
+            ::anno::description("Index of refraction."),
+            ::anno::soft_range(1.0,4.0),
+            ::anno::in_group("Advanced")
+        ]],
+        uniform int uv_space_index = 0
+        [[
+            ::anno::display_name("UV Space Index"),
+            ::anno::description("UV space index."),
+            ::anno::hard_range(0,3),
+            ::anno::in_group("Advanced")
+        ]])
+    [[
+        ::anno::display_name("Concrete Precast - Light Warm Gray"),
+		::anno::description("A material for (pre)cast concrete formwork panels that have holes as part of the manufacturing process."),
+		::anno::author("NVIDIA vMaterials"),
+		::anno::copyright_notice(COPYRIGHT),
+		::anno::thumbnail("./.thumbs/Concrete_Precast.concrete_precast_light_warm_gray.png"),
+		::anno::key_words(string[]("floor", "cast", "concrete", "precast", "construction", "cement", "warm", "gray", "light gray", "unfinished", "rough"))
+    ]]= 
+    ::nvidia::core_definitions::flex_material_v2(
+        base_color:  ::nvidia::core_definitions::blend_colors(
+                color_1: ::nvidia::core_definitions::blend_colors(
+                    color_1: concrete_color,
+                color_2: ::nvidia::core_definitions::file_texture(
+                    texture: texture_2d ( "./textures/precastconcrete_diff.png" , ::tex::gamma_srgb) ,
+                    mono_source:  ::base::mono_average,
+                    brightness:  1.f,
+                    contrast:  1.f,
+                    scaling:  0.5f/ texture_scale,
+                    translation:  texture_translate,
+                    rotation:  texture_rotate,
+                    clip:  false,
+                    texture_space:  uv_space_index,
+                    invert:  false).tint,
+                mode: ::base::color_layer_overlay,
+                weight: 1.0f ).tint,
+            color_2:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_grunge_mask.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            mode: ::base::color_layer_multiply,
+            weight: grunge_amount ).tint,
+        diffuse_roughness:  0.f,
+        is_metal:  false,
+        reflectivity: 1.0f,
+        reflection_roughness:  ::nvidia::core_definitions::blend_colors(
+            color_1: ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_rough.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            color_2: color (reflection_roughness),
+            mode: ::base::color_layer_overlay,
+            weight: 1.0f ).mono,
+        anisotropy:  0.f,
+        anisotropy_rotation:  0.f,
+        transparency:  0.f,
+        transmission_color:  color ( 1.f , 1.f , 1.f),
+        volume_color:  color ( 1.f , 1.f , 1.f),
+        transmission_roughness:  0.f,
+        base_thickness:  0.1f,
+        ior:  ior,
+        thin_walled:  false,
+        normal:  ::nvidia::core_definitions::normalmap_texture(
+            texture:  texture_2d ( "./textures/precastconcrete_norm.jpg" , ::tex::gamma_linear),
+            scaling: 0.5f/ texture_scale,
+            translation:  texture_translate,
+            rotation:  texture_rotate,
+            clip:  false,
+            factor: bump_strength * 0.20f,
+            texture_space:  uv_space_index));
+
+
+
+export material concrete_precast_warm_gray(
+    
+        color concrete_color = color (0.932f , 0.859f , 0.797f )
+        [[
+            ::anno::display_name("Concrete Color"),
+            ::anno::description ( "Choose the color of the Concrete."),
+            ::anno::in_group("Appearance")
+        ]],
+        float grunge_amount =  0.55f
+        [[
+            ::anno::display_name("Grunge Amount"),
+            ::anno::description("higher values results in more noise difference in the color of the concrete."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        float reflection_roughness =  0.15f
+        [[
+            ::anno::display_name("Roughness"),
+            ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float bump_strength =  1.f
+        [[
+            ::anno::display_name("Bump Strength"),
+            ::anno::description("Specifies the strength of the bump."),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float2 texture_translate =  float2 ( 0.f)
+        [[
+            ::anno::display_name("Translate"),
+            ::anno::description("Controls the position of the texture."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float texture_rotate =  0.f
+        [[
+            ::anno::display_name("Rotate"),
+            ::anno::description("Rotate angle of the texture in degrees."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float2 texture_scale =  float2 ( 1.f , 1.f)
+        [[
+            ::anno::display_name("Scale"),
+            ::anno::description("Larger numbers increase the texture size."),
+            ::anno::in_group("Transform"),
+			::nvidia::core_definitions::dimension(float2(1.0f, 1.0f))
+        ]],
+        uniform float ior =  1.5f
+        [[
+            ::anno::display_name("IOR"),
+            ::anno::description("Index of refraction."),
+            ::anno::soft_range(1.0,4.0),
+            ::anno::in_group("Advanced")
+        ]],
+        uniform int uv_space_index = 0
+        [[
+            ::anno::display_name("UV Space Index"),
+            ::anno::description("UV space index."),
+            ::anno::hard_range(0,3),
+            ::anno::in_group("Advanced")
+        ]])
+    [[
+        ::anno::display_name("Concrete Precast - Warm Gray"),
+		::anno::description("A material for (pre)cast concrete formwork panels that have holes as part of the manufacturing process."),
+		::anno::author("NVIDIA vMaterials"),
+		::anno::copyright_notice(COPYRIGHT),
+		::anno::thumbnail("./.thumbs/Concrete_Precast.concrete_precast_warm_gray.png"),
+		::anno::key_words(string[]("floor", "cast", "concrete", "precast", "construction", "cement", "warm", "gray", "unfinished", "rough"))
+    ]]= 
+    ::nvidia::core_definitions::flex_material_v2(
+        base_color:  ::nvidia::core_definitions::blend_colors(
+                color_1: ::nvidia::core_definitions::blend_colors(
+                    color_1: concrete_color,
+                color_2: ::nvidia::core_definitions::file_texture(
+                    texture: texture_2d ( "./textures/precastconcrete_diff.png" , ::tex::gamma_srgb) ,
+                    mono_source:  ::base::mono_average,
+                    brightness:  1.f,
+                    contrast:  1.f,
+                    scaling:  0.5f/ texture_scale,
+                    translation:  texture_translate,
+                    rotation:  texture_rotate,
+                    clip:  false,
+                    texture_space:  uv_space_index,
+                    invert:  false).tint,
+                mode: ::base::color_layer_overlay,
+                weight: 1.0f ).tint,
+            color_2:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_grunge_mask.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            mode: ::base::color_layer_multiply,
+            weight: grunge_amount ).tint,
+        diffuse_roughness:  0.f,
+        is_metal:  false,
+        reflectivity: 1.0f,
+        reflection_roughness:  ::nvidia::core_definitions::blend_colors(
+            color_1: ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_rough.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            color_2: color (reflection_roughness),
+            mode: ::base::color_layer_overlay,
+            weight: 1.0f ).mono,
+        anisotropy:  0.f,
+        anisotropy_rotation:  0.f,
+        transparency:  0.f,
+        transmission_color:  color ( 1.f , 1.f , 1.f),
+        volume_color:  color ( 1.f , 1.f , 1.f),
+        transmission_roughness:  0.f,
+        base_thickness:  0.1f,
+        ior:  ior,
+        thin_walled:  false,
+        normal:  ::nvidia::core_definitions::normalmap_texture(
+            texture:  texture_2d ( "./textures/precastconcrete_norm.jpg" , ::tex::gamma_linear),
+            scaling: 0.5f/ texture_scale,
+            translation:  texture_translate,
+            rotation:  texture_rotate,
+            clip:  false,
+            factor: bump_strength * 0.20f,
+            texture_space:  uv_space_index));
+
+
+
+
+export material concrete_precast_dark_gray(
+    
+        color concrete_color = color ( 0.53f , 0.505f , 0.494f )
+        [[
+            ::anno::display_name("Concrete Color"),
+            ::anno::description ( "Choose the color of the Concrete."),
+            ::anno::in_group("Appearance")
+        ]],
+        float grunge_amount =  0.5f
+        [[
+            ::anno::display_name("Grunge Amount"),
+            ::anno::description("higher values results in more noise difference in the color of the concrete."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        float reflection_roughness =  0.15f
+        [[
+            ::anno::display_name("Roughness"),
+            ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float bump_strength =  1.f
+        [[
+            ::anno::display_name("Bump Strength"),
+            ::anno::description("Specifies the strength of the bump."),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float2 texture_translate =  float2 ( 0.f)
+        [[
+            ::anno::display_name("Translate"),
+            ::anno::description("Controls the position of the texture."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float texture_rotate =  0.f
+        [[
+            ::anno::display_name("Rotate"),
+            ::anno::description("Rotate angle of the texture in degrees."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float2 texture_scale =  float2 ( 1.f , 1.f)
+        [[
+            ::anno::display_name("Scale"),
+            ::anno::description("Larger numbers increase the texture size."),
+            ::anno::in_group("Transform"),
+			::nvidia::core_definitions::dimension(float2(1.0f, 1.0f))
+        ]],
+        uniform float ior =  1.5f
+        [[
+            ::anno::display_name("IOR"),
+            ::anno::description("Index of refraction."),
+            ::anno::soft_range(1.0,4.0),
+            ::anno::in_group("Advanced")
+        ]],
+        uniform int uv_space_index = 0
+        [[
+            ::anno::display_name("UV Space Index"),
+            ::anno::description("UV space index."),
+            ::anno::hard_range(0,3),
+            ::anno::in_group("Advanced")
+        ]])
+    [[
+        ::anno::display_name("Concrete Precast - Dark Gray"),
+		::anno::description("A material for (pre)cast concrete formwork panels that have holes as part of the manufacturing process."),
+		::anno::author("NVIDIA vMaterials"),
+		::anno::copyright_notice(COPYRIGHT),
+		::anno::thumbnail("./.thumbs/Concrete_Precast.concrete_precast_dark_gray.png"),
+		::anno::key_words(string[]("floor", "cast", "concrete", "precast", "construction", "cement", "dark", "gray", "dark gray", "unfinished", "rough"))
+    ]]= 
+    ::nvidia::core_definitions::flex_material_v2(
+        base_color:  ::nvidia::core_definitions::blend_colors(
+                color_1: ::nvidia::core_definitions::blend_colors(
+                    color_1: concrete_color,
+                color_2: ::nvidia::core_definitions::file_texture(
+                    texture: texture_2d ( "./textures/precastconcrete_diff.png" , ::tex::gamma_srgb) ,
+                    mono_source:  ::base::mono_average,
+                    brightness:  1.f,
+                    contrast:  1.f,
+                    scaling:  0.5f/ texture_scale,
+                    translation:  texture_translate,
+                    rotation:  texture_rotate,
+                    clip:  false,
+                    texture_space:  uv_space_index,
+                    invert:  false).tint,
+                mode: ::base::color_layer_overlay,
+                weight: 1.0f ).tint,
+            color_2:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_grunge_mask.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            mode: ::base::color_layer_multiply,
+            weight: grunge_amount ).tint,
+        diffuse_roughness:  0.f,
+        is_metal:  false,
+        reflectivity: 1.0f,
+        reflection_roughness:  ::nvidia::core_definitions::blend_colors(
+            color_1: ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_rough.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            color_2: color (reflection_roughness),
+            mode: ::base::color_layer_overlay,
+            weight: 1.0f ).mono,
+        anisotropy:  0.f,
+        anisotropy_rotation:  0.f,
+        transparency:  0.f,
+        transmission_color:  color ( 1.f , 1.f , 1.f),
+        volume_color:  color ( 1.f , 1.f , 1.f),
+        transmission_roughness:  0.f,
+        base_thickness:  0.1f,
+        ior:  ior,
+        thin_walled:  false,
+        normal:  ::nvidia::core_definitions::normalmap_texture(
+            texture:  texture_2d ( "./textures/precastconcrete_norm.jpg" , ::tex::gamma_linear),
+            scaling: 0.5f/ texture_scale,
+            translation:  texture_translate,
+            rotation:  texture_rotate,
+            clip:  false,
+            factor: bump_strength * 0.20f,
+            texture_space:  uv_space_index));
+
+
+
+export material concrete_precast_dark_charcoal(
+    
+        color concrete_color = color ( 0.28f , 0.259f , 0.239f )
+        [[
+            ::anno::display_name("Concrete Color"),
+            ::anno::description ( "Choose the color of the Concrete."),
+            ::anno::in_group("Appearance")
+        ]],
+        float grunge_amount =  0.5f
+        [[
+            ::anno::display_name("Grunge Amount"),
+            ::anno::description("higher values results in more noise difference in the color of the concrete."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        float reflection_roughness =  0.15f
+        [[
+            ::anno::display_name("Roughness"),
+            ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float bump_strength =  1.f
+        [[
+            ::anno::display_name("Bump Strength"),
+            ::anno::description("Specifies the strength of the bump."),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float2 texture_translate =  float2 ( 0.f)
+        [[
+            ::anno::display_name("Translate"),
+            ::anno::description("Controls the position of the texture."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float texture_rotate =  0.f
+        [[
+            ::anno::display_name("Rotate"),
+            ::anno::description("Rotate angle of the texture in degrees."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float2 texture_scale =  float2 ( 1.f , 1.f)
+        [[
+            ::anno::display_name("Scale"),
+            ::anno::description("Larger numbers increase the texture size."),
+            ::anno::in_group("Transform"),
+			::nvidia::core_definitions::dimension(float2(1.0f, 1.0f))
+        ]],
+        uniform float ior =  1.5f
+        [[
+            ::anno::display_name("IOR"),
+            ::anno::description("Index of refraction."),
+            ::anno::soft_range(1.0,4.0),
+            ::anno::in_group("Advanced")
+        ]],
+        uniform int uv_space_index = 0
+        [[
+            ::anno::display_name("UV Space Index"),
+            ::anno::description("UV space index."),
+            ::anno::hard_range(0,3),
+            ::anno::in_group("Advanced")
+        ]])
+    [[
+        ::anno::display_name("Concrete Precast - Charcoal"),
+		::anno::description("A material for (pre)cast concrete formwork panels that have holes as part of the manufacturing process."),
+		::anno::author("NVIDIA vMaterials"),
+		::anno::copyright_notice(COPYRIGHT),
+		::anno::thumbnail("./.thumbs/Concrete_Precast.concrete_precast_dark_charcoal.png"),
+		::anno::key_words(string[]("floor", "cast", "concrete", "precast", "construction", "cement", "dark", "charcoal", "gray", "unfinished", "rough"))
+    ]]= 
+    ::nvidia::core_definitions::flex_material_v2(
+        base_color:  ::nvidia::core_definitions::blend_colors(
+                color_1: ::nvidia::core_definitions::blend_colors(
+                    color_1: concrete_color,
+                color_2: ::nvidia::core_definitions::file_texture(
+                    texture: texture_2d ( "./textures/precastconcrete_diff.png" , ::tex::gamma_srgb) ,
+                    mono_source:  ::base::mono_average,
+                    brightness:  1.f,
+                    contrast:  1.f,
+                    scaling:  0.5f/ texture_scale,
+                    translation:  texture_translate,
+                    rotation:  texture_rotate,
+                    clip:  false,
+                    texture_space:  uv_space_index,
+                    invert:  false).tint,
+                mode: ::base::color_layer_overlay,
+                weight: 1.0f ).tint,
+            color_2:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_grunge_mask.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            mode: ::base::color_layer_multiply,
+            weight: grunge_amount ).tint,
+        diffuse_roughness:  0.f,
+        is_metal:  false,
+        reflectivity: 1.0f,
+        reflection_roughness:  ::nvidia::core_definitions::blend_colors(
+            color_1: ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_rough.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            color_2: color (reflection_roughness),
+            mode: ::base::color_layer_overlay,
+            weight: 1.0f ).mono,
+        anisotropy:  0.f,
+        anisotropy_rotation:  0.f,
+        transparency:  0.f,
+        transmission_color:  color ( 1.f , 1.f , 1.f),
+        volume_color:  color ( 1.f , 1.f , 1.f),
+        transmission_roughness:  0.f,
+        base_thickness:  0.1f,
+        ior:  ior,
+        thin_walled:  false,
+        normal:  ::nvidia::core_definitions::normalmap_texture(
+            texture:  texture_2d ( "./textures/precastconcrete_norm.jpg" , ::tex::gamma_linear),
+            scaling: 0.5f/ texture_scale,
+            translation:  texture_translate,
+            rotation:  texture_rotate,
+            clip:  false,
+            factor: bump_strength * 0.20f,
+            texture_space:  uv_space_index));
+
+
+
+export material concrete_precast_walnut(
+    
+        color concrete_color = color ( 0.47f , 0.307f , 0.239f )
+        [[
+            ::anno::display_name("Concrete Color"),
+            ::anno::description ( "Choose the color of the Concrete."),
+            ::anno::in_group("Appearance")
+        ]],
+        float grunge_amount =  0.5f
+        [[
+            ::anno::display_name("Grunge Amount"),
+            ::anno::description("higher values results in more noise difference in the color of the concrete."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        float reflection_roughness =  0.15f
+        [[
+            ::anno::display_name("Roughness"),
+            ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float bump_strength =  1.f
+        [[
+            ::anno::display_name("Bump Strength"),
+            ::anno::description("Specifies the strength of the bump."),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float2 texture_translate =  float2 ( 0.f)
+        [[
+            ::anno::display_name("Translate"),
+            ::anno::description("Controls the position of the texture."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float texture_rotate =  0.f
+        [[
+            ::anno::display_name("Rotate"),
+            ::anno::description("Rotate angle of the texture in degrees."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float2 texture_scale =  float2 ( 1.f , 1.f)
+        [[
+            ::anno::display_name("Scale"),
+            ::anno::description("Larger numbers increase the texture size."),
+            ::anno::in_group("Transform"),
+			::nvidia::core_definitions::dimension(float2(1.0f, 1.0f))
+        ]],
+        uniform float ior =  1.5f
+        [[
+            ::anno::display_name("IOR"),
+            ::anno::description("Index of refraction."),
+            ::anno::soft_range(1.0,4.0),
+            ::anno::in_group("Advanced")
+        ]],
+        uniform int uv_space_index = 0
+        [[
+            ::anno::display_name("UV Space Index"),
+            ::anno::description("UV space index."),
+            ::anno::hard_range(0,3),
+            ::anno::in_group("Advanced")
+        ]])
+    [[
+        ::anno::display_name("Concrete Precast - Walnut"),
+		::anno::description("A material for (pre)cast concrete formwork panels that have holes as part of the manufacturing process."),
+		::anno::author("NVIDIA vMaterials"),
+		::anno::copyright_notice(COPYRIGHT),
+		::anno::thumbnail("./.thumbs/Concrete_Precast.concrete_precast_walnut.png"),
+		::anno::key_words(string[]("floor", "cast", "concrete", "precast", "construction", "cement", "warm", "walnut", "unfinished", "rough"))
+    ]]= 
+    ::nvidia::core_definitions::flex_material_v2(
+        base_color:  ::nvidia::core_definitions::blend_colors(
+                color_1: ::nvidia::core_definitions::blend_colors(
+                    color_1: concrete_color,
+                color_2: ::nvidia::core_definitions::file_texture(
+                    texture: texture_2d ( "./textures/precastconcrete_diff.png" , ::tex::gamma_srgb) ,
+                    mono_source:  ::base::mono_average,
+                    brightness:  1.f,
+                    contrast:  1.f,
+                    scaling:  0.5f/ texture_scale,
+                    translation:  texture_translate,
+                    rotation:  texture_rotate,
+                    clip:  false,
+                    texture_space:  uv_space_index,
+                    invert:  false).tint,
+                mode: ::base::color_layer_overlay,
+                weight: 1.0f ).tint,
+            color_2:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_grunge_mask.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            mode: ::base::color_layer_multiply,
+            weight: grunge_amount ).tint,
+        diffuse_roughness:  0.f,
+        is_metal:  false,
+        reflectivity: 1.0f,
+        reflection_roughness:  ::nvidia::core_definitions::blend_colors(
+            color_1: ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_rough.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            color_2: color (reflection_roughness),
+            mode: ::base::color_layer_overlay,
+            weight: 1.0f ).mono,
+        anisotropy:  0.f,
+        anisotropy_rotation:  0.f,
+        transparency:  0.f,
+        transmission_color:  color ( 1.f , 1.f , 1.f),
+        volume_color:  color ( 1.f , 1.f , 1.f),
+        transmission_roughness:  0.f,
+        base_thickness:  0.1f,
+        ior:  ior,
+        thin_walled:  false,
+        normal:  ::nvidia::core_definitions::normalmap_texture(
+            texture:  texture_2d ( "./textures/precastconcrete_norm.jpg" , ::tex::gamma_linear),
+            scaling: 0.5f/ texture_scale,
+            translation:  texture_translate,
+            rotation:  texture_rotate,
+            clip:  false,
+            factor: bump_strength * 0.20f,
+            texture_space:  uv_space_index));
+
+
+export material concrete_precast_sienna(
+    
+        color concrete_color = color ( 0.517f , 0.453f , 0.344f )
+        [[
+            ::anno::display_name("Concrete Color"),
+            ::anno::description ( "Choose the color of the Concrete."),
+            ::anno::in_group("Appearance")
+        ]],
+        float grunge_amount =  0.5f
+        [[
+            ::anno::display_name("Grunge Amount"),
+            ::anno::description("higher values results in more noise difference in the color of the concrete."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        float reflection_roughness =  0.15f
+        [[
+            ::anno::display_name("Roughness"),
+            ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+            ::anno::hard_range(0.0,1.0),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float bump_strength =  1.f
+        [[
+            ::anno::display_name("Bump Strength"),
+            ::anno::description("Specifies the strength of the bump."),
+            ::anno::in_group("Appearance")
+        ]],
+        uniform float2 texture_translate =  float2 ( 0.f)
+        [[
+            ::anno::display_name("Translate"),
+            ::anno::description("Controls the position of the texture."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float texture_rotate =  0.f
+        [[
+            ::anno::display_name("Rotate"),
+            ::anno::description("Rotate angle of the texture in degrees."),
+            ::anno::in_group("Transform")
+        ]],
+        uniform float2 texture_scale =  float2 ( 1.f , 1.f)
+        [[
+            ::anno::display_name("Scale"),
+            ::anno::description("Larger numbers increase the texture size."),
+            ::anno::in_group("Transform"),
+			::nvidia::core_definitions::dimension(float2(1.0f, 1.0f))
+        ]],
+        uniform float ior =  1.5f
+        [[
+            ::anno::display_name("IOR"),
+            ::anno::description("Index of refraction."),
+            ::anno::soft_range(1.0,4.0),
+            ::anno::in_group("Advanced")
+        ]],
+        uniform int uv_space_index = 0
+        [[
+            ::anno::display_name("UV Space Index"),
+            ::anno::description("UV space index."),
+            ::anno::hard_range(0,3),
+            ::anno::in_group("Advanced")
+        ]])
+    [[
+        ::anno::display_name("Concrete Precast - Sienna"),
+		::anno::description("A material for (pre)cast concrete formwork panels that have holes as part of the manufacturing process."),
+		::anno::author("NVIDIA vMaterials"),
+		::anno::copyright_notice(COPYRIGHT),
+		::anno::thumbnail("./.thumbs/Concrete_Precast.concrete_precast_sienna.png"),
+		::anno::key_words(string[]("floor", "cast", "concrete", "precast", "construction", "cement", "sienna", "gray", "unfinished", "rough"))
+    ]]= 
+    ::nvidia::core_definitions::flex_material_v2(
+        base_color:  ::nvidia::core_definitions::blend_colors(
+                color_1: ::nvidia::core_definitions::blend_colors(
+                    color_1: concrete_color,
+                color_2: ::nvidia::core_definitions::file_texture(
+                    texture: texture_2d ( "./textures/precastconcrete_diff.png" , ::tex::gamma_srgb) ,
+                    mono_source:  ::base::mono_average,
+                    brightness:  1.f,
+                    contrast:  1.f,
+                    scaling:  0.5f/ texture_scale,
+                    translation:  texture_translate,
+                    rotation:  texture_rotate,
+                    clip:  false,
+                    texture_space:  uv_space_index,
+                    invert:  false).tint,
+                mode: ::base::color_layer_overlay,
+                weight: 1.0f ).tint,
+            color_2:  ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_grunge_mask.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            mode: ::base::color_layer_multiply,
+            weight: grunge_amount ).tint,
+        diffuse_roughness:  0.f,
+        is_metal:  false,
+        reflectivity: 1.0f,
+        reflection_roughness:  ::nvidia::core_definitions::blend_colors(
+            color_1: ::nvidia::core_definitions::file_texture(
+                texture: texture_2d ( "./textures/precastconcrete_rough.png" , ::tex::gamma_srgb) ,
+                mono_source:  ::base::mono_average,
+                brightness:  1.f,
+                contrast:  1.f,
+                scaling:  0.5f/ texture_scale,
+                translation:  texture_translate,
+                rotation:  texture_rotate,
+                clip:  false,
+                texture_space:  uv_space_index,
+                invert:  false).tint,
+            color_2: color (reflection_roughness),
+            mode: ::base::color_layer_overlay,
+            weight: 1.0f ).mono,
+        anisotropy:  0.f,
+        anisotropy_rotation:  0.f,
+        transparency:  0.f,
+        transmission_color:  color ( 1.f , 1.f , 1.f),
+        volume_color:  color ( 1.f , 1.f , 1.f),
+        transmission_roughness:  0.f,
+        base_thickness:  0.1f,
+        ior:  ior,
+        thin_walled:  false,
+        normal:  ::nvidia::core_definitions::normalmap_texture(
+            texture:  texture_2d ( "./textures/precastconcrete_norm.jpg" , ::tex::gamma_linear),
+            scaling: 0.5f/ texture_scale,
+            translation:  texture_translate,
+            rotation:  texture_rotate,
+            clip:  false,
+            factor: bump_strength * 0.20f,
+            texture_space:  uv_space_index));

code/third_party/vMaterials_2/Concrete/Concrete_Rough.mdl

@@ -0,0 +1,457 @@
+/******************************************************************************
+ *	 Copyright 2024 NVIDIA Corporation. All rights reserved.	 *
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA's Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+mdl 1.5;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+
+
+float remap_xy_to_0_1(float input, float x, float y)
+{
+	return (input - x)/(y - x);
+}
+
+float histogram_scan_big(float input, float width, float position)
+{
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(-width, 1.0, position),
+					::math::lerp(0.0, 1.0 + width, position)),
+				0.0,
+				1.0);
+}
+
+float histogram_scan_small(float input, float width, float position)
+{	
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(0.0, 1.0 - width, position),
+					::math::lerp(width, 1.0 , position)),
+				0.0,
+				1.0);
+}
+
+::base::texture_coordinate_info vmat_transform(
+								uniform float2 translation = float2(0.0, 0.0),
+								uniform float rotation	 = 0.0,
+								uniform float2 scaling	 = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space	   = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.			 ,  0. ,	 0.,
+			 0.			, 1.0 /scaling.y ,  0. ,	 0.,
+			 0.			, 0.			 ,  1.0,	 0.,
+			 translation.x , translation.y  ,  0.0,	 1.);
+
+	float s = ::math::sin(rotation_rad);
+	float c = ::math::cos(rotation_rad);
+	float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return ::base::transform_coordinate(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+
+float histogram_range(float input, float range, float position)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+
+
+float uint2float(int x)
+{
+	return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+int lowbias32(int x)
+{
+	x ^= x >>> 16;
+	x *= 0x7feb352d;
+	x ^= x >>> 15;
+	x *= 0x846ca68b;
+	x ^= x >>> 16;
+	return x;
+}
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+	return ret_val;
+}	
+
+float3 srgb2rgb(float3 val)
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;	 // patch scale inside example texture
+	float CON = 1.0f;
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m*float(CON))
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m*float(CON))
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m*float(CON));
+	else
+		O = (W[0] =	  -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m*float(CON))
+		  + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m*float(CON))
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m*float(CON));
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+
+color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+
+float3 endless_normal(
+	uniform texture_2d texture = texture_2d(),
+	float factor = 1.0,
+	bool flip_tangent_u = false,
+	bool flip_tangent_v = false,
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0
+)
+{
+	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
+	float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
+	
+	if (flip_tangent_u)
+		transformed_tangent_u=-transformed_tangent_u;
+	if (flip_tangent_v)
+		transformed_tangent_v=-transformed_tangent_v;
+
+	// normalized Lookup
+	float3 tangent_space_normal =
+		 (nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		) - 0.5) * (2.0 * factor);
+		
+	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
+		  uvw.tangent_v * tangent_space_normal.y +
+		  ::state::normal()*1.0); 
+}
+
+float3 normalmap_normal(
+	uniform texture_2d texture,
+	float factor = 1.0,
+	::base::texture_coordinate_info uvw = ::base::texture_coordinate_info()
+)
+{
+	float3 lookup = (::tex::lookup_float3(texture, float2(uvw.position.x, uvw.position.y)) - float3(0.5)) * (factor * 2.0);
+	return ::math::normalize(uvw.tangent_u * lookup.x + uvw.tangent_v * lookup.y + ::state::normal() * (lookup.z + (1.0 - factor)));
+}
+
+
+export material Concrete_Rough(
+	uniform bool infinite_tiling = true [[
+		::anno::description("Enables infinite tiling feature which removes repeating texture patterns. Note that depending on the material this feature changes the appearance of the material slightly."),
+		::anno::display_name("Infinite Tiling"),
+		::anno::in_group("Appearance")
+	]],
+	float diffuse_brightness = 1.f [[
+		::anno::description("Adjusts the lightness of the material."),
+		::anno::display_name("Diffuse Brightness"),
+		::anno::hard_range(0.f, 1.f),
+		::anno::in_group("Appearance")
+	]],
+	float roughness = 0.f [[
+		::anno::description("Higher values lead to blurrier reflections."),
+		::anno::display_name("Roughness"),
+		::anno::hard_range(0.f, 1.f),
+		::anno::in_group("Appearance")
+	]],
+	float reflectivity = 1.f [[
+		::anno::description("Higher values make the surface more reflective."),
+		::anno::display_name("Reflectivity"),
+		::anno::hard_range(0.f, 1.f),
+		::anno::in_group("Appearance")
+	]],
+	float moss_growth = 0.f [[
+		::anno::description("Grows a layer of moss on top of the material."),
+		::anno::display_name("Moss Growth"),
+		::anno::hard_range(0.f, 1.f),
+		::anno::in_group("Appearance")
+	]],
+	uniform float bump_strength = 1.f [[
+		::anno::description("Determines the degree of bumpiness."),
+		::anno::display_name("Bump Strength"),
+		::anno::hard_range(0.f, 2.f),
+		::anno::soft_range(0.f, 1.f),
+		::anno::in_group("Appearance")
+	]],
+	float dirt = 0.f [[
+		::anno::description("The strength of the dirtlayer."),
+		::anno::display_name("Dirt Strength"),
+		::anno::hard_range(0.f, 1.f),
+		::anno::in_group("Appearance", "Dirt")
+	]],
+	color dirt_color = color(0.f, 0.f, 0.f) [[
+		::anno::description("Adjust the color of the dirt layer."),
+		::anno::display_name("Dirt Color"),
+		::anno::in_group("Appearance", "Dirt")
+	]],
+	uniform float2 texture_translate = float2(0.f) [[
+		::anno::description("Controls the position of the texture."),
+		::anno::display_name("Texture Translate"),
+		::anno::in_group("Transform")
+	]],
+	uniform float texture_rotate = 0.f [[
+		::anno::description("Rotation of the texture in degrees."),
+		::anno::display_name("Texture Rotate"),
+		::anno::in_group("Transform")
+	]],
+	uniform float2 texture_scale = float2(1.f) [[
+		::anno::description("Larger numbers increase the size."),
+		::anno::display_name("Texture Scale"),
+		::nvidia::core_definitions::dimension(float2(1.0, 1.0)),
+		::anno::in_group("Transform")
+	]],
+	uniform int uv_space_index = 0 [[
+		::anno::description("Uses selected UV space for material."),
+		::anno::display_name("UV Space Index"),
+		::anno::in_group("Advanced")
+	]]
+)
+[[
+	::anno::description("A rough concrete material with a dirt and moss layer."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Rough"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Rough.Concrete_Rough.png"),
+	::anno::key_words(string[]("floor", "wall", "concrete", "construction", "exterior", "cement", "unfinished", "rough", "worn", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = 
+	let {
+		bool tmp0 = false;
+		material_surface tmp1(::df::custom_curve_layer(0.0399999991f, 1.f, 5.f, ::math::pow(histogram_scan_small(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], ::math::lerp(0.0340000018f, 1.f, reflectivity), 1.f), 2.20000005f), ::df::microfacet_ggx_smith_bsdf(::math::lerp(::math::lerp(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.635890067f, ::math::lerp(0.465000033f, 0.852000058f, roughness)), ::math::lerp(0.709000051f, histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.635890067f, ::math::lerp(0.465000033f, 0.852000058f, roughness)), histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.417000026f, 0.747000039f)), dirt), float3(::base::file_texture(texture_2d("./textures/moss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale * 0.478000015f, ::base::texture_coordinate_uvw, 0), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.334000021f, ::math::lerp(1.f, 0.584000051f, moss_growth))) * ::math::lerp(::math::lerp(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.635890067f, ::math::lerp(0.465000033f, 0.852000058f, roughness)), ::math::lerp(0.709000051f, histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.635890067f, ::math::lerp(0.465000033f, 0.852000058f, roughness)), histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.417000026f, 0.747000039f)), dirt), float3(::base::file_texture(texture_2d("./textures/moss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale * 0.478000015f, ::base::texture_coordinate_uvw, 0), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.334000021f, ::math::lerp(1.f, 0.584000051f, moss_growth))), ::math::lerp(::math::lerp(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.635890067f, ::math::lerp(0.465000033f, 0.852000058f, roughness)), ::math::lerp(0.709000051f, histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.635890067f, ::math::lerp(0.465000033f, 0.852000058f, roughness)), histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.417000026f, 0.747000039f)), dirt), float3(::base::file_texture(texture_2d("./textures/moss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale * 0.478000015f, ::base::texture_coordinate_uvw, 0), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.334000021f, ::math::lerp(1.f, 0.584000051f, moss_growth))) * ::math::lerp(::math::lerp(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.635890067f, ::math::lerp(0.465000033f, 0.852000058f, roughness)), ::math::lerp(0.709000051f, histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.635890067f, ::math::lerp(0.465000033f, 0.852000058f, roughness)), histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.417000026f, 0.747000039f)), dirt), float3(::base::file_texture(texture_2d("./textures/moss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale * 0.478000015f, ::base::texture_coordinate_uvw, 0), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.334000021f, ::math::lerp(1.f, 0.584000051f, moss_growth))), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect), ::df::weighted_layer(1.f, ::df::diffuse_reflection_bsdf(nvidia::core_definitions::blend_colors(nvidia::core_definitions::blend_colors(nvidia::core_definitions::blend_colors(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_diff.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.705882013f, 0.705882013f, 0.678430974f), 2.02700019f, true) : ::base::file_texture(texture_2d("./textures/concrete_rough_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, color(0.f, 0.f, 0.f), ::base::color_layer_multiply, ::math::lerp(0.356000006f, 0.f, diffuse_brightness)).tint, nvidia::core_definitions::blend_colors(dirt_color, color(1.f, 1.f, 1.f), ::base::color_layer_blend, ::math::pow(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 2.20000005f)).tint, ::base::color_layer_multiply, dirt * 0.699999988f).tint, ::base::file_texture(texture_2d("./textures/moss_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale * 0.478000015f, ::base::texture_coordinate_uvw, 0), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, ::base::color_layer_multiply, histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.334000021f, ::math::lerp(1.f, 0.584000051f, moss_growth))).tint, 0.f), bsdf(), ::state::normal()), ::state::normal()), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		color tmp3 = color(1.f, 1.f, 1.f);
+		material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
+		material_geometry tmp5(float3(0.f), 1.f, ::math::normalize(::math::lerp(infinite_tiling ? endless_normal(texture_2d("./textures/concrete_rough_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.5f, 0.5f, 1.f), 2.02700019f) : ::base::tangent_space_normal_texture(texture_2d("./textures/concrete_rough_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f), normalmap_normal(texture_2d("./textures/moss_norm.jpg", ::tex::gamma_linear), 2.f, vmat_transform(texture_translate, texture_rotate, texture_scale * 0.478000015f, ::base::texture_coordinate_uvw, 0)), histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 2.2670002f, float3(0.647059023f, 0.721569002f, 0.464740992f), 2.02700019f, false) : ::base::file_texture(texture_2d("./textures/concrete_rough_ORM.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.334000021f, ::math::lerp(1.f, 0.584000051f, moss_growth)))));
+		hair_bsdf tmp6 = hair_bsdf();
+	} in
+		material(
+			thin_walled: tmp0,
+			surface: tmp1,
+			backface: tmp2,
+			ior: tmp3,
+			volume: tmp4,
+			geometry: tmp5,
+			hair: tmp6);
+
+
+export material Concrete_Rough_Dirty(*)
+[[
+	::anno::description("A rough concrete material with a dirt and moss layer."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Rough Dirty"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Rough.Concrete_Rough_Dirty.png"),
+	::anno::key_words(string[]("floor", "wall", "concrete", "construction", "exterior", "cement", "unfinished", "rough", "worn", "dirty", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = Concrete_Rough(
+	infinite_tiling:	true,
+	diffuse_brightness: 1.0f,
+	roughness:			0.5f,
+	reflectivity:		1.0f,
+	moss_growth:		0.0f,
+	bump_strength:		1.0f,
+	dirt:				1.0f,
+	dirt_color:			color(0.0f),
+	texture_translate:	float2(0.0f),
+	texture_rotate:		0.0f,
+	texture_scale:		float2(1.0f),
+	uv_space_index:		0
+);
+
+
+export material Concrete_Rough_Mossy(*)
+[[
+	::anno::description("A rough concrete material with a dirt and moss layer."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Rough Mossy"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Rough.Concrete_Rough_Mossy.png"),
+	::anno::key_words(string[]("floor", "wall", "concrete", "construction", "exterior", "cement", "unfinished", "rough", "worn", "dirty", "decayed", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = Concrete_Rough(
+	infinite_tiling:	true,
+	diffuse_brightness: 1.0f,
+	roughness:			0.5f,
+	reflectivity:		1.0f,
+	moss_growth:		0.5f,
+	bump_strength:		1.0f,
+	dirt:				0.0f,
+	dirt_color:			color(0.0f),
+	texture_translate:	float2(0.0f),
+	texture_rotate:		0.0f,
+	texture_scale:		float2(1.0f),
+	uv_space_index:		0
+);
+
+
+export material Concrete_Rough_Heavy_Decay(*)
+[[
+	::anno::description("A rough concrete material with a dirt and moss layer."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Rough Heavy Decay"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Rough.Concrete_Rough_Heavy_Decay.png"),
+	::anno::key_words(string[]("floor", "wall", "concrete", "construction", "exterior", "cement", "unfinished", "rough", "worn", "dirty", "decayed", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = Concrete_Rough(
+	infinite_tiling:	true,
+	diffuse_brightness: 1.0f,
+	roughness:			0.75f,
+	reflectivity:		1.0f,
+	moss_growth:		0.80f,
+	bump_strength:		1.0f,
+	dirt:				0.0f,
+	dirt_color:			color(0.0f),
+	texture_translate:	float2(0.0f),
+	texture_rotate:		0.0f,
+	texture_scale:		float2(1.0f),
+	uv_space_index:		0
+);

code/third_party/vMaterials_2/Concrete/Concrete_Wall_Aged.mdl

@@ -0,0 +1,436 @@
+/******************************************************************************
+ *    Copyright 2024 NVIDIA Corporation. All rights reserved.           *
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA’s Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+mdl 1.5;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+
+
+::base::texture_coordinate_info transform_coordinate_2(
+    float4x4 transform                                         
+        [[ ::anno::description("A transformation to be applied to the source coordinates. rotation_translation_scale() is a suggested means to compute the transformation matrix.") ]],
+    ::base::texture_coordinate_info coordinate = ::base::texture_coordinate_info()
+        [[ ::anno::description("Coordinate, typically sourced from coordinate_source or coordinate_projection.") ]]
+) [[ 
+    ::anno::description("Transform a texture coordinate by a matrix.") ,
+    ::anno::noinline()
+  ]]
+{
+	// Version 2
+	float4 r_position = transform * float4(coordinate.position.x,coordinate.position.y,coordinate.position.z,1);
+	//Try aproximating it for the case that the rotation is only aroud z and assuming the texture layout is nice and z is ~constant.
+	//just pretend there is no other rotation happening
+	//get rid of scaling and translation. Then extract fields where sin and cos would be in a simple 2d transform around z.
+	float4 u = transform[0];
+	float3 ru = ::math::normalize(float3(u.x,u.y,u.z));
+	float cos =  ru.x; 
+	float sin =  -ru.y;
+	//TODO: at least also handle sign of z?
+	//TODO: handle tangent becoming 0 
+
+    return ::base::texture_coordinate_info(
+        float3(r_position.x,r_position.y,r_position.z),
+		::math::normalize(cos * coordinate.tangent_u - sin * coordinate.tangent_v),
+		::math::normalize(cos * coordinate.tangent_v + sin * coordinate.tangent_u));
+}
+
+::base::texture_coordinate_info vmat_transform(
+								float2 translation = float2(0.0, 0.0),
+								float rotation     = 0.0,				// rotation in degrees
+								float2 scaling     = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space       = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.             ,  0. ,     0.,
+			 0.            , 1.0 /scaling.y ,  0. ,     0.,
+			 0.            , 0.             ,  1.0,     0.,
+			 translation.x , translation.y  ,  0.0,     1.);
+
+    float s = ::math::sin(rotation_rad);
+    float c = ::math::cos(rotation_rad);
+    float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return transform_coordinate_2(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+
+float histogram_range(float input, float range, float position)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+
+
+float uint2float(int x)
+{
+	return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+int lowbias32(int x)
+{
+	x ^= x >>> 16;
+	x *= 0x7feb352d;
+	x ^= x >>> 15;
+	x *= 0x846ca68b;
+	x ^= x >>> 16;
+	return x;
+}
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+	return ret_val;
+}	
+
+float3 srgb2rgb(float3 val)
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;	 // patch scale inside example texture
+	float CON = 1.0f;
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m*float(CON))
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m*float(CON))
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m*float(CON));
+	else
+		O = (W[0] =	  -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m*float(CON))
+		  + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m*float(CON))
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m*float(CON));
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+
+color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+
+float3 endless_normal(
+	uniform texture_2d texture = texture_2d(),
+	float factor = 1.0,
+	bool flip_tangent_u = false,
+	bool flip_tangent_v = false,
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0
+)
+{
+	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
+	float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
+	
+	if (flip_tangent_u)
+		transformed_tangent_u=-transformed_tangent_u;
+	if (flip_tangent_v)
+		transformed_tangent_v=-transformed_tangent_v;
+
+	// normalized Lookup
+	float3 tangent_space_normal =
+		 (nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		) - 0.5) * (2.0 * factor);
+		
+	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
+		  uvw.tangent_v * tangent_space_normal.y +
+		  ::state::normal()*1.0); 
+}
+
+export material Concrete_Wall_Aged(
+    uniform bool infinite_tiling = false [[
+        ::anno::description("Enables infinite tiling feature which removes repeating texture patterns. Note that depending on the material this feature changes the appearance of the material slightly."),
+        ::anno::display_name("Infinite Tiling"),
+        ::anno::in_group("Appearance")
+    ]],
+    float diffuse_brightness = 0.8f [[
+        ::anno::description("Adjusts the lightness of the material."),
+        ::anno::display_name("Diffuse Brightness"),
+        ::anno::in_group("Appearance"),
+        ::anno::hard_range(0.f, 1.f)
+    ]],
+    float roughness = 0.45f [[
+        ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+        ::anno::display_name("Roughness"),
+        ::anno::in_group("Appearance"),
+        ::anno::hard_range(0.f, 1.f)
+    ]],
+    uniform float bump_strength = 1.f [[
+        ::anno::description("Specifies the strength of the bump."),
+        ::anno::display_name("Bump Strength"),
+        ::anno::in_group("Appearance"),
+        ::anno::hard_range(0.f, 3.f),
+        ::anno::soft_range(0.f, 1.f)
+    ]],
+    float grunge_weight = 0.0f [[
+        ::anno::description("Adjusts the shininess of the grunge reflection. Vallues less than 0.5 make it shinier, value greater than 0.5 make it rougher. Set to 0.5 for neutral setting."),
+        ::anno::display_name("Grunge Amount"),
+        ::anno::in_group("Appearance", "Grunge"),
+        ::anno::hard_range(0.f, 1.f)
+    ]],
+    float grunge_roughness = 0.65f [[
+        ::anno::description("Specifies the roughnes."),
+        ::anno::display_name("Grunge Roughness"),
+        ::anno::in_group("Appearance", "Grunge"),
+        ::anno::hard_range(0.f, 1.f)
+    ]],
+    color grunge_tint = color(0.0546f, 0.0478f, 0.0446f) [[
+        ::anno::description("Tints the grunge layered upon the concrete."),
+        ::anno::display_name("Grunge Tint"),
+        ::anno::in_group("Appearance", "Grunge")
+    ]],
+    float2 texture_translate = float2(0.f) [[
+        ::anno::description("Controls the position of the texture."),
+        ::anno::display_name("Texture Translate"),
+        ::anno::in_group("Transform")
+    ]],
+    float texture_rotate = 0.f [[
+        ::anno::description("Rotates angle of the texture in degrees."),
+        ::anno::display_name("Texture Rotate"),
+        ::anno::in_group("Transform"),
+        ::anno::soft_range(0.f, 360.f)
+    ]],
+    float2 texture_scale = float2(1.f) [[
+        ::anno::description("Larger numbers increase the size."),
+        ::anno::display_name("Texture Scale"),
+		::nvidia::core_definitions::dimension(float2(1.0, 1.0)),
+        ::anno::in_group("Transform")
+    ]],
+    uniform bool roundcorners_enable = false [[
+        ::anno::description("Enables the round corner effect. Comes at a slight performance cost as additional raytracing calls are required to evaluate the round corner effect."),
+        ::anno::display_name("Enable Round Corners"),
+        ::anno::in_group("Round Corners")
+    ]],
+    uniform float roundcorners_radius_mm = 1.5f [[
+        ::anno::description("Radius of the rounded corners in millimeters."),
+        ::anno::display_name("Round Corner Radius (mm)"),
+        ::anno::in_group("Round Corners"),
+        ::anno::soft_range(0.f, 10.f)
+    ]],
+    uniform bool roundcorners_across_materials = false [[
+        ::anno::description("Applies the round corner effect across different materials when enabled."),
+        ::anno::display_name("Across Materials"),
+        ::anno::in_group("Round Corners")
+    ]],
+    uniform int uv_space_index = 0 [[
+        ::anno::description("Uses selected UV space for material."),
+        ::anno::display_name("UV Space Index"),
+        ::anno::in_group("Advanced")
+    ]]
+)
+[[
+    ::anno::description("An old concrete wall."),
+    ::anno::in_group("Concrete"),
+    ::anno::display_name("Concrete Wall Aged"),
+    ::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Aged.Concrete_Wall_Aged.png"),
+	::anno::key_words(string[]("concrete", "infinite tiling", "wall", "outdoor", "old", "construction", "aged", "paint", "worn", "scratched", "gray")),
+    ::anno::author("NVIDIA vMaterials"),
+    ::anno::contributor("Ruediger Raab"),
+    ::anno::contributor("Maik Rohland")
+]]
+ = 
+    let {
+        bool tmp0 = false;
+        material_surface tmp1(::df::custom_curve_layer(0.0399999991f, 1.f, 5.f, float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], ::df::microfacet_ggx_smith_bsdf((histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, roughness * 0.25f + 0.600000024f) + grunge_weight * (grunge_roughness * 0.600000024f + -0.300000012f) * float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2]) * (histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, roughness * 0.25f + 0.600000024f) + grunge_weight * (grunge_roughness * 0.600000024f + -0.300000012f) * float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2]), (histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, roughness * 0.25f + 0.600000024f) + grunge_weight * (grunge_roughness * 0.600000024f + -0.300000012f) * float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2]) * (histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, roughness * 0.25f + 0.600000024f) + grunge_weight * (grunge_roughness * 0.600000024f + -0.300000012f) * float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2]), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect, ""), ::df::weighted_layer(1.f, ::df::diffuse_reflection_bsdf(nvidia::core_definitions::blend_colors(nvidia::core_definitions::blend_colors(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_diff.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.576470971f, 0.560783982f, 0.517647028f), 5.44000006f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, grunge_tint, ::base::color_layer_multiply, float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.352941006f, 0.870588005f, 0.0549019985f), 5.44000006f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2] * grunge_weight).tint, color(0.f, 0.f, 0.f), ::base::color_layer_multiply, diffuse_brightness * -0.300000012f + 0.300000012f).tint, 0.f, ""), bsdf(), infinite_tiling ? endless_normal(texture_2d("./textures/concrete_wall_aged_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.5f, 0.5f, 1.f), 5.44000006f) : ::base::tangent_space_normal_texture(texture_2d("./textures/concrete_wall_aged_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), infinite_tiling ? endless_normal(texture_2d("./textures/concrete_wall_aged_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 5.44000006f, float3(0.5f, 0.5f, 1.f), 5.44000006f) : ::base::tangent_space_normal_texture(texture_2d("./textures/concrete_wall_aged_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        color tmp3 = color(1.f, 1.f, 1.f);
+        material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
+        material_geometry tmp5(float3(0.f), 1.f, roundcorners_enable ? ::state::rounded_corner_normal(roundcorners_radius_mm * 0.00100000005f, roundcorners_across_materials, 1.f) : ::state::normal());
+        hair_bsdf tmp6 = hair_bsdf();
+    } in
+        material(
+            thin_walled: tmp0,
+            surface: tmp1,
+            backface: tmp2,
+            ior: tmp3,
+            volume: tmp4,
+            geometry: tmp5,
+            hair: tmp6);
+
+
+export material Concrete_Wall_Aged_Slight_Grunge(*)
+[[
+    ::anno::description("An old concrete wall."),
+    ::anno::in_group("Concrete"),
+    ::anno::display_name("Concrete Wall Aged - Slight Grunge"),
+    ::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Aged.Concrete_Wall_Aged_Slight_Grunge.png"),
+	::anno::key_words(string[]("concrete", "infinite tiling", "wall", "outdoor", "old", "construction", "aged", "paint", "worn", "scratched", "gray")),
+    ::anno::author("NVIDIA vMaterials"),
+    ::anno::contributor("Ruediger Raab"),
+    ::anno::contributor("Maik Rohland")
+]] = Concrete_Wall_Aged
+(
+	infinite_tiling:				false,
+	diffuse_brightness:				0.7f,		
+	roughness:						0.33f,
+	bump_strength:					1.0f,
+	grunge_weight:					0.74f,
+	grunge_tint:					color(0.0528f, 0.0399f, 0.0342f),
+	grunge_roughness:				0.81f,
+	texture_translate:				float2(0.0f),
+	texture_rotate:					0.0f,
+	texture_scale:					float2(1.0f),
+	roundcorners_enable:			false,
+	roundcorners_radius_mm:			2.0f,
+	roundcorners_across_materials:	false,
+	uv_space_index:					0
+);
+
+
+export material Concrete_Wall_Aged_Rough_Black_Grunge(*)
+[[
+    ::anno::description("An old concrete wall."),
+    ::anno::in_group("Concrete"),
+    ::anno::display_name("Concrete Wall Aged - Black Grunge"),
+    ::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Aged.Concrete_Wall_Aged_Slight_Grunge.png"),
+	::anno::key_words(string[]("concrete", "infinite tiling", "wall", "outdoor", "old", "construction", "aged", "paint", "worn", "grunge", "dirt", "dirty", "scratched", "gray")),
+    ::anno::author("NVIDIA vMaterials"),
+    ::anno::contributor("Ruediger Raab"),
+    ::anno::contributor("Maik Rohland")
+]] = Concrete_Wall_Aged
+(
+	infinite_tiling:				false,
+	diffuse_brightness:				0.7f,		
+	roughness:						0.67f,
+	bump_strength:					1.0f,
+	grunge_weight:					1.0f,
+	grunge_tint:					color(0.009696f, 0.005522f, 0.000992f),
+	grunge_roughness:				0.19f,
+	texture_translate:				float2(0.0f),
+	texture_rotate:					0.0f,
+	texture_scale:					float2(1.0f),
+	roundcorners_enable:			false,
+	roundcorners_radius_mm:			2.0f,
+	roundcorners_across_materials:	false,
+	uv_space_index:					0
+);

code/third_party/vMaterials_2/Concrete/Concrete_Wall_Aged_Scratched.mdl

@@ -0,0 +1,462 @@
+/******************************************************************************
+ *    Copyright 2024 NVIDIA Corporation. All rights reserved.           *
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA’s Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+mdl 1.5;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+
+
+::base::texture_coordinate_info transform_coordinate_2(
+	float4x4 transform										 
+		[[ ::anno::description("A transformation to be applied to the source coordinates. rotation_translation_scale() is a suggested means to compute the transformation matrix.") ]],
+	::base::texture_coordinate_info coordinate = ::base::texture_coordinate_info()
+		[[ ::anno::description("Coordinate, typically sourced from coordinate_source or coordinate_projection.") ]]
+) [[ 
+	::anno::description("Transform a texture coordinate by a matrix.") ,
+	::anno::noinline()
+  ]]
+{
+	// Version 2
+	float4 r_position = transform * float4(coordinate.position.x,coordinate.position.y,coordinate.position.z,1);
+	//Try aproximating it for the case that the rotation is only aroud z and assuming the texture layout is nice and z is ~constant.
+	//just pretend there is no other rotation happening
+	//get rid of scaling and translation. Then extract fields where sin and cos would be in a simple 2d transform around z.
+	float4 u = transform[0];
+	float3 ru = ::math::normalize(float3(u.x,u.y,u.z));
+	float cos =  ru.x; 
+	float sin =  -ru.y;
+	//TODO: at least also handle sign of z?
+	//TODO: handle tangent becoming 0 
+
+	return ::base::texture_coordinate_info(
+		float3(r_position.x,r_position.y,r_position.z),
+		::math::normalize(cos * coordinate.tangent_u - sin * coordinate.tangent_v),
+		::math::normalize(cos * coordinate.tangent_v + sin * coordinate.tangent_u));
+}
+
+::base::texture_coordinate_info vmat_transform(
+								float2 translation = float2(0.0, 0.0),
+								float rotation	 = 0.0,				// rotation in degrees
+								float2 scaling	 = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space	   = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.			 ,  0. ,	 0.,
+			 0.			, 1.0 /scaling.y ,  0. ,	 0.,
+			 0.			, 0.			 ,  1.0,	 0.,
+			 translation.x , translation.y  ,  0.0,	 1.);
+
+	float s = ::math::sin(rotation_rad);
+	float c = ::math::cos(rotation_rad);
+	float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return transform_coordinate_2(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+float remap_xy_to_0_1(float input, float x, float y)
+{
+	return (input - x)/(y - x);
+}
+
+float histogram_scan_big(float input, float width, float position)
+{
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(-width, 1.0, position),
+					::math::lerp(0.0, 1.0 + width, position)),
+				0.0,
+				1.0);
+}
+
+
+float histogram_range(float input, float range, float position)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+
+
+float uint2float(int x)
+{
+	return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+int lowbias32(int x)
+{
+	x ^= x >>> 16;
+	x *= 0x7feb352d;
+	x ^= x >>> 15;
+	x *= 0x846ca68b;
+	x ^= x >>> 16;
+	return x;
+}
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+	return ret_val;
+}	
+
+float3 srgb2rgb(float3 val)
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;	 // patch scale inside example texture
+	float CON = 1.0f;
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m*float(CON))
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m*float(CON))
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m*float(CON));
+	else
+		O = (W[0] =	  -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m*float(CON))
+		  + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m*float(CON))
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m*float(CON));
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+
+color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+
+float3 endless_normal(
+	uniform texture_2d texture = texture_2d(),
+	float factor = 1.0,
+	bool flip_tangent_u = false,
+	bool flip_tangent_v = false,
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0
+)
+{
+	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
+	float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
+	
+	if (flip_tangent_u)
+		transformed_tangent_u=-transformed_tangent_u;
+	if (flip_tangent_v)
+		transformed_tangent_v=-transformed_tangent_v;
+
+	// normalized Lookup
+	float3 tangent_space_normal =
+		 (nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		) - 0.5) * (2.0 * factor);
+		
+	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
+		  uvw.tangent_v * tangent_space_normal.y +
+		  ::state::normal()*1.0); 
+}
+
+export material Concrete_Wall_Aged_Scratched(
+	uniform bool infinite_tiling = false [[
+		::anno::description("Enables infinite tiling feature which removes repeating texture patterns. Note that depending on the material this feature changes the appearance of the material slightly."),
+		::anno::display_name("Infinite Tiling"),
+		::anno::in_group("Appearance")
+	]],
+	float diffuse_brightness = 1.f [[
+		::anno::description("Adjusts the lightness of the material."),
+		::anno::display_name("Diffuse Brightness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float roughness = 1.f [[
+		::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+		::anno::display_name("Roughness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float grunge = 0.f [[
+		::anno::description("Adds a layer of grunge on top of the material."),
+		::anno::display_name("Grunge"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	uniform float bump_strength = 1.f [[
+		::anno::description("Specifies the strength of the bump."),
+		::anno::display_name("Bump Strength"),
+		::anno::in_group("Appearance"),
+		::anno::soft_range(0.f, 2.f),
+		::anno::hard_range(0.f, 3.f)
+	]],
+	float2 texture_translate = float2(0.f) [[
+		::anno::description("Controls the position of the texture."),
+		::anno::display_name("Texture Translate"),
+		::anno::in_group("Transform")
+	]],
+	float texture_rotate = 0.f [[
+		::anno::description("Rotates angle of the texture in degrees."),
+		::anno::display_name("Texture Rotate"),
+		::anno::in_group("Transform"),
+		::anno::soft_range(0.f, 360.f)
+	]],
+	float2 texture_scale = float2(1.f) [[
+		::anno::description("Larger numbers increase the size."),
+		::anno::display_name("Texture Scale"),
+		::nvidia::core_definitions::dimension(float2(1.5, 1.5)),
+		::anno::in_group("Transform")
+	]],
+	uniform bool roundcorners_enable = false [[
+		::anno::description("Enables the round corner effect. Comes at a slight performance cost as additional raytracing calls are required to evaluate the round corner effect."),
+		::anno::display_name("Enable Round Corners"),
+		::anno::in_group("Round Corners")
+	]],
+	uniform float roundcorners_radius_mm = 1.5f [[
+		::anno::description("Radius of the rounded corners in millimeters."),
+		::anno::display_name("Round Corner Radius (mm)"),
+		::anno::in_group("Round Corners"),
+		::anno::soft_range(0.f, 10.f)
+	]],
+	uniform bool roundcorners_across_materials = false [[
+		::anno::description("Applies the round corner effect across different materials when enabled."),
+		::anno::display_name("Across Materials"),
+		::anno::in_group("Round Corners")
+	]],
+	uniform int uv_space_index = 0 [[
+		::anno::description("Uses selected UV space for material."),
+		::anno::display_name("UV Space Index"),
+		::anno::in_group("Advanced")
+	]]
+)
+[[
+	::anno::description("A worn painted concrete wall that shows signs of damage."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Wall Aged Scratched - Rough"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Aged_Scratched.Concrete_Wall_Aged_Scratched.png"),
+	::anno::key_words(string[]("concrete", "infinite tiling", "wall", "outdoor", "old", "construction", "aged", "paint", "worn", "scratched", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = 
+	let {
+		material_surface tmp1(::df::custom_curve_layer(0.0399999991f, 1.f, 5.f, histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.396077991f, 0.858824015f, 0.894118011f), 3.5999999f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 1.f, 0.649999976f), ::df::microfacet_ggx_smith_bsdf(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.396077991f, 0.858824015f, 0.894118011f), 3.5999999f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0] + (1.f - float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.6f, float3(0.396f, 0.858f, 0.894f), 3.6f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2]) * (grunge * 0.299999982f), 1.f, roughness * 0.370000005f + 0.400000006f) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.396077991f, 0.858824015f, 0.894118011f), 3.5999999f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0] + (1.f - float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.396077991f, 0.858824015f, 0.894118011f), 3.5999999f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2]) * (grunge * 0.299999982f), 1.f, roughness * 0.370000005f + 0.400000006f), histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.396077991f, 0.858824015f, 0.894118011f), 3.5999999f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0] + (1.f - float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.396077991f, 0.858824015f, 0.894118011f), 3.5999999f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2]) * (grunge * 0.299999982f), 1.f, roughness * 0.370000005f + 0.400000006f) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.396077991f, 0.858824015f, 0.894118011f), 3.5999999f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0] + (1.f - float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.396077991f, 0.858824015f, 0.894118011f), 3.5999999f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2]) * (grunge * 0.299999982f), 1.f, roughness * 0.370000005f + 0.400000006f), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect), ::df::weighted_layer(1.f, ::df::diffuse_reflection_bsdf(nvidia::core_definitions::blend_colors(nvidia::core_definitions::blend_colors(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_diff.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.596077979f, 0.568627f, 0.541176021f), 3.5999999f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, color(::math::pow(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.396077991f, 0.858824015f, 0.894118011f), 3.5999999f, false) : ::base::file_texture(texture_2d("./textures/concrete_wall_aged_scratched_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 2.20000005f)), ::base::color_layer_multiply, grunge * 0.699999988f).tint, color(0.f, 0.f, 0.f), ::base::color_layer_multiply, diffuse_brightness * -0.300000012f + 0.300000012f).tint, 0.f), bsdf(), infinite_tiling ? endless_normal(texture_2d("./textures/concrete_wall_aged_scratched_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.501960993f, 0.505882025f, 0.988234997f), 3.5999999f) : ::base::tangent_space_normal_texture(texture_2d("./textures/concrete_wall_aged_scratched_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), infinite_tiling ? endless_normal(texture_2d("./textures/concrete_wall_aged_scratched_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.5999999f, float3(0.501960993f, 0.505882025f, 0.988234997f), 3.5999999f) : ::base::tangent_space_normal_texture(texture_2d("./textures/concrete_wall_aged_scratched_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		color tmp3 = color(1.f, 1.f, 1.f);
+		material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
+		material_geometry tmp5(float3(0.f), 1.f, roundcorners_enable ? ::state::rounded_corner_normal(roundcorners_radius_mm * 0.00100000005f, roundcorners_across_materials, 1.f) : ::state::normal());
+	} in
+		material(
+			thin_walled: false,
+			surface: tmp1,
+			backface: tmp2,
+			ior: tmp3,
+			volume: tmp4,
+			geometry: tmp5);
+
+
+
+export material Concrete_Wall_Aged_Scratched_Shiny(*)
+[[
+	::anno::description("A worn painted concrete wall that shows signs of damage."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Wall Aged Scratched - Shiny"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Aged_Scratched.Concrete_Wall_Aged_Scratched_Shiny.png"),
+	::anno::key_words(string[]("concrete", "infinite tiling", "wall", "outdoor", "old", "construction", "aged", "paint", "worn", "scratched", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Concrete_Wall_Aged_Scratched
+(
+	infinite_tiling:				true,
+	diffuse_brightness: 			1.0f,
+	roughness: 						0.03f,
+	grunge: 						0.0f,
+	bump_strength: 					1.0f,
+	texture_translate: 				float2(0.0f),
+	texture_rotate: 				0.0f,
+	texture_scale: 					float2(1.0f),
+	roundcorners_enable: 			false,
+	roundcorners_radius_mm: 		1.5f,
+	roundcorners_across_materials: 	false,
+	uv_space_index: 				0
+);
+
+
+export material Concrete_Wall_Aged_Scratched_Medium_Grime(*)
+[[
+	::anno::description("A worn painted concrete wall that shows signs of damage."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Wall Aged Scratched - Medium Grime"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Aged_Scratched.Concrete_Wall_Aged_Scratched_Medium_Grime.png"),
+	::anno::key_words(string[]("concrete", "infinite tiling", "wall", "outdoor", "old", "construction", "aged", "paint", "worn", "scratched", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Concrete_Wall_Aged_Scratched
+(
+	infinite_tiling:				true,
+	diffuse_brightness: 			1.0f,
+	roughness: 						0.8f,
+	grunge: 						0.52f,
+	bump_strength: 					1.0f,
+	texture_translate: 				float2(0.0f),
+	texture_rotate: 				0.0f,
+	texture_scale: 					float2(1.0f),
+	roundcorners_enable: 			false,
+	roundcorners_radius_mm: 		1.5f,
+	roundcorners_across_materials: 	false,
+	uv_space_index: 				0
+);
+
+
+export material Concrete_Wall_Aged_Scratched_Heavy_Grime(*)
+[[
+	::anno::description("A worn painted concrete wall that shows signs of damage."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Wall Aged Scratched - Heavy Grime"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Aged_Scratched.Concrete_Wall_Aged_Scratched_Heavy_Grime.png"),
+	::anno::key_words(string[]("concrete", "infinite tiling", "wall", "outdoor", "old", "construction", "aged", "paint", "dirty", "worn", "scratched", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Concrete_Wall_Aged_Scratched
+(
+	infinite_tiling:				true,
+	diffuse_brightness: 			.56f,
+	roughness: 						0.71f,
+	grunge: 						0.85f,
+	bump_strength: 					1.0f,
+	texture_translate: 				float2(0.0f),
+	texture_rotate: 				0.0f,
+	texture_scale: 					float2(1.0f),
+	roundcorners_enable: 			false,
+	roundcorners_radius_mm: 		1.5f,
+	roundcorners_across_materials: 	false,
+	uv_space_index: 				0
+);

code/third_party/vMaterials_2/Concrete/Concrete_Wall_Even.mdl

@@ -0,0 +1,449 @@
+/******************************************************************************
+ *    Copyright 2024 NVIDIA Corporation. All rights reserved.           *
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA’s Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+mdl 1.5;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+
+::base::texture_coordinate_info vmat_transform(
+								uniform float2 translation = float2(0.0, 0.0),
+								uniform float rotation	 = 0.0,
+								uniform float2 scaling	 = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space	   = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.			 ,  0. ,	 0.,
+			 0.			, 1.0 /scaling.y ,  0. ,	 0.,
+			 0.			, 0.			 ,  1.0,	 0.,
+			 translation.x , translation.y  ,  0.0,	 1.);
+
+	float s = ::math::sin(rotation_rad);
+	float c = ::math::cos(rotation_rad);
+	float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return ::base::transform_coordinate(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+float remap(float input, float low_1, float high_1, float low_2, float high_2)
+{
+	return low_2 + ((input - low_1) * (high_2 - low_2))/(high_1 - low_1);
+}
+
+float histogram_scan(float input, float width, float position)
+{	
+	float low = ::math::clamp(1.0f - position * 2.0, 0.0f ,1.0f);
+	float high = ::math::clamp(position > 0.5f ? 1.0 : 2.0f - 2 * position, 0.0f, 1.0f);
+	//float center = (low + high)/2.0f);
+	float offset = ((high - low) / 2.0) * width;
+	low += offset;
+	high -= offset;
+	return ::math::clamp(
+				remap(input,
+					low,
+					high,
+					0.0,
+					1.0),
+				0.0,
+				1.0);
+}
+
+
+float histogram_range(float input, float range, float position)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+
+
+float uint2float(int x)
+{
+	return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+int lowbias32(int x)
+{
+	x ^= x >>> 16;
+	x *= 0x7feb352d;
+	x ^= x >>> 15;
+	x *= 0x846ca68b;
+	x ^= x >>> 16;
+	return x;
+}
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+	return ret_val;
+}	
+
+float3 srgb2rgb(float3 val)
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;	 // patch scale inside example texture
+	float CON = 1.0f;
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m*float(CON))
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m*float(CON))
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m*float(CON));
+	else
+		O = (W[0] =	  -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m*float(CON))
+		  + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m*float(CON))
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m*float(CON));
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+
+color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+
+float3 endless_normal(
+	uniform texture_2d texture = texture_2d(),
+	float factor = 1.0,
+	bool flip_tangent_u = false,
+	bool flip_tangent_v = false,
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0
+)
+{
+	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
+	float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
+	
+	if (flip_tangent_u)
+		transformed_tangent_u=-transformed_tangent_u;
+	if (flip_tangent_v)
+		transformed_tangent_v=-transformed_tangent_v;
+
+	// normalized Lookup
+	float3 tangent_space_normal =
+		 (nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		) - 0.5) * (2.0 * factor);
+		
+	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
+		  uvw.tangent_v * tangent_space_normal.y +
+		  ::state::normal()*1.0); 
+}
+
+
+export material Concrete_Wall_Even(
+	uniform bool infinite_tiling = false [[
+		::anno::description("Enables infinite tiling feature which removes repeating texture patterns. Note that depending on the material this feature changes the appearance of the material slightly."),
+		::anno::display_name("Infinite Tiling"),
+		::anno::in_group("Appearance")
+	]],
+	color diffuse_tint = color(0.737205f) [[
+		::anno::description("Choose the color of the concrete wall."),
+		::anno::display_name("Diffuse Tint"),
+		::anno::in_group("Appearance")
+	]],
+	float diffuse_brightness = 0.65f [[
+		::anno::description("Adjusts the lightness of the diffuse color."),
+		::anno::display_name("Diffuse Brightness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float roughness = 0.62f [[
+		::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+		::anno::display_name("Roughness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	float dirt_layer_weight = 0.0f [[
+		::anno::description("Weight of the dirt layer."),
+		::anno::display_name("Dirt Amount"),
+		::anno::in_group("Appearance", "Dirt"),
+		::anno::hard_range(0.f, 1.f)
+	]],
+	color dirt_layer_color = color(0.6f, 0.6f, 0.6f) [[
+		::anno::description("Set the color of the dirt layer."),
+		::anno::display_name("Dirt Layer Color"),
+		::anno::in_group("Appearance", "Dirt")
+	]],
+	uniform float2 texture_translate = float2(0.f) [[
+		::anno::description("Controls the position of the texture."),
+		::anno::display_name("Texture Translate"),
+		::anno::in_group("Transform")
+	]],
+	uniform float texture_rotate = 0.f [[
+		::anno::description("Rotates angle of the texture in degrees."),
+		::anno::display_name("Texture Rotate"),
+		::anno::in_group("Transform"),
+		::anno::soft_range(0.f, 360.f)
+	]],
+	uniform float2 texture_scale = float2(1.f) [[
+		::anno::description("Larger numbers increase the size."),
+		::anno::display_name("Texture Scale"),
+		::nvidia::core_definitions::dimension(float2(1.5, 1.5)),
+		::anno::in_group("Transform")
+	]],
+	uniform bool roundcorners_enable = false [[
+		::anno::description("Enables the round corner effect. Comes at a slight performance cost as additional raytracing calls are required to evaluate the round corner effect."),
+		::anno::display_name("Enable Round Corners"),
+		::anno::in_group("Round Corners")
+	]],
+	uniform float roundcorners_radius_mm = 1.5f [[
+		::anno::description("Radius of the rounded corners in millimeters."),
+		::anno::display_name("Round Corner Radius (mm)"),
+		::anno::in_group("Round Corners"),
+		::anno::soft_range(0.f, 10.f)
+	]],
+	uniform bool roundcorners_across_materials = true [[
+		::anno::description("Applies the round corner effect across different materials when enabled."),
+		::anno::display_name("Across Materials"),
+		::anno::in_group("Round Corners")
+	]],
+	uniform int uv_space_index = 0 [[
+		::anno::description("Uses selected UV space for material."),
+		::anno::display_name("UV Space Index"),
+		::anno::in_group("Transform")
+	]]
+)
+[[
+	::anno::description("A flat concrete wall."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Wall Even - Rough"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Even.Concrete_Wall_Even.png"),
+	::anno::key_words(string[]("concrete", "wall", "outdoor", "indoor", "even", "new", "construction", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = 
+	let {
+		bool tmp0 = false;
+		material_surface tmp1(::df::custom_curve_layer(0.0299999993f, 1.f, 5.f, histogram_scan(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.919999957f, 0.109999999f), ::df::microfacet_ggx_smith_bsdf(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0] + float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2] * dirt_layer_weight * 0.50999999f, 1.f, roughness * 0.25f + 0.649999976f) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0] + float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2] * dirt_layer_weight * 0.50999999f, 1.f, roughness * 0.25f + 0.649999976f), histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0] + float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2] * dirt_layer_weight * 0.50999999f, 1.f, roughness * 0.25f + 0.649999976f) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0] + float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2] * dirt_layer_weight * 0.50999999f, 1.f, roughness * 0.25f + 0.649999976f), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect), ::df::weighted_layer(1.f, ::df::diffuse_reflection_bsdf(nvidia::core_definitions::blend_colors(nvidia::core_definitions::blend_colors(nvidia::core_definitions::blend_colors(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_diff.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.55686301f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, diffuse_tint, ::base::color_layer_overlay, 1.f).tint, dirt_layer_color, ::base::color_layer_multiply, float3(infinite_tiling ? endless_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.203922004f, 0.917647004f, 0.164706007f), 10.f, true) : ::base::file_texture(texture_2d("./textures/concrete_wall_even_R_rough_G_ao_B_grunge.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2] * dirt_layer_weight).tint, color(0.f, 0.f, 0.f), ::base::color_layer_multiply, diffuse_brightness * -0.400000006f + 0.400000006f).tint, 0.f), bsdf(), infinite_tiling ? endless_normal(texture_2d("./textures/concrete_wall_even_norm.jpg", ::tex::gamma_linear), 1.f, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.498039007f, 0.498039007f, 0.996078014f), 10.f) : ::base::tangent_space_normal_texture(texture_2d("./textures/concrete_wall_even_norm.jpg", ::tex::gamma_linear), 1.f, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), infinite_tiling ? endless_normal(texture_2d("./textures/concrete_wall_even_norm.jpg", ::tex::gamma_linear), 1.f, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 10.f, float3(0.498039007f, 0.498039007f, 0.996078014f), 10.f) : ::base::tangent_space_normal_texture(texture_2d("./textures/concrete_wall_even_norm.jpg", ::tex::gamma_linear), 1.f, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+		color tmp3 = color(1.f, 1.f, 1.f);
+		material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
+		material_geometry tmp5(float3(0.f), 1.f, roundcorners_enable ? ::state::rounded_corner_normal(roundcorners_radius_mm * 0.00100000005f, roundcorners_across_materials, 1.f) : ::state::normal());
+	} in
+		material(
+			thin_walled: tmp0,
+			surface: tmp1,
+			backface: tmp2,
+			ior: tmp3,
+			volume: tmp4,
+			geometry: tmp5);
+
+export material Concrete_Wall_Even_New_Shiny(*)
+[[
+	::anno::description("A flat concrete wall."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Wall Even - Shiny"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Even.Concrete_Wall_Even_New_Shiny.png"),
+	::anno::key_words(string[]("concrete", "wall", "outdoor", "indoor", "even", "new", "shiny", "construction", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Concrete_Wall_Even
+(
+	infinite_tiling:		false,
+	diffuse_tint:			color(0.6f, 0.6f, 0.6f),	
+	diffuse_brightness:		.65f,
+	roughness:				.0f,
+	dirt_layer_weight:		0.0f,
+	dirt_layer_color:		color(0.420508f, 0.378676f, 0.348865f),
+	texture_translate:		float2(0.0f),
+	texture_rotate:			0.0f,
+	texture_scale:			float2(1.0f),
+	roundcorners_enable:	false,
+	roundcorners_radius_mm:	2.5f,
+	roundcorners_across_materials:	false,
+	uv_space_index:			0
+);
+
+
+
+export material Concrete_Wall_Even_Brownish_Dirty(*)
+[[
+	::anno::description("A flat concrete wall with a brownish dirt layer on top."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Wall Even - Dirty Brownish"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Even.Concrete_Wall_Even_Brownish_Dirty.png"),
+	::anno::key_words(string[]("concrete", "wall", "outdoor", "indoor", "even", "dirt", "dirty", "grunge", "construction", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Concrete_Wall_Even
+(
+	infinite_tiling:		false,
+	diffuse_tint:			color(0.701170f, 0.645555f, 0.566810f),	
+	diffuse_brightness:		.65f,
+	roughness:				.65f,
+	dirt_layer_weight:		1.0f,
+	dirt_layer_color:		color(0.399293f, 0.358654f, 0.280124f),
+	texture_translate:		float2(0.0f),
+	texture_rotate:			0.0f,
+	texture_scale:			float2(1.0f),
+	roundcorners_enable:	false,
+	roundcorners_radius_mm:	2.5f,
+	roundcorners_across_materials:	false,
+	uv_space_index:			0
+);
+
+
+export material Concrete_Wall_Even_Greenish_Dirty(*)
+[[
+	::anno::description("A flat concrete wall."),
+	::anno::in_group("Concrete"),
+	::anno::display_name("Concrete Wall Even - Dirty Greenish"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Concrete_Wall_Even.Concrete_Wall_Even_Greenish_Dirty.png"),
+	::anno::key_words(string[]("concrete", "wall", "outdoor", "indoor", "even", "dirt", "dirty", "grunge", "construction", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Concrete_Wall_Even
+(
+	infinite_tiling:		false,
+	diffuse_tint:			color(0.673049f, 0.701170f, 0.666117f),	
+	diffuse_brightness:		.65f,
+	roughness:				.65f,
+	dirt_layer_weight:		1.0f,
+	dirt_layer_color:		color(0.219520f, 0.271577f, 0.193972f),
+	texture_translate:		float2(0.0f),
+	texture_rotate:			0.0f,
+	texture_scale:			float2(1.0f),
+	roundcorners_enable:	false,
+	roundcorners_radius_mm:	2.5f,
+	roundcorners_across_materials:	false,
+	uv_space_index:			0
+);

code/third_party/vMaterials_2/Concrete/Mortar.mdl

@@ -0,0 +1,626 @@
+/******************************************************************************
+ *	        Copyright 2024 NVIDIA Corporation. All rights reserved.           *
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA's Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+
+mdl 1.5;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+
+::base::texture_coordinate_info transform_coordinate_2(
+	float4x4 transform										 
+		[[ ::anno::description("A transformation to be applied to the source coordinates. rotation_translation_scale() is a suggested means to compute the transformation matrix.") ]],
+	::base::texture_coordinate_info coordinate = ::base::texture_coordinate_info()
+		[[ ::anno::description("Coordinate, typically sourced from coordinate_source or coordinate_projection.") ]]
+) [[ 
+	::anno::description("Transform a texture coordinate by a matrix.") ,
+	::anno::noinline()
+  ]]
+{
+	
+	/*
+	// Version 1
+	float4 r_position = float4(coordinate.position.x,coordinate.position.y,coordinate.position.z,1)* transform;
+	float4 r_tangent_u = float4(coordinate.tangent_u.x,coordinate.tangent_u.y,coordinate.tangent_u.z,1)* transform;
+	float4 r_tangent_v = float4(coordinate.tangent_v.x,coordinate.tangent_v.y,coordinate.tangent_v.z,1)* transform;
+	return ::base::texture_coordinate_info(
+		float3(r_position.x,r_position.y,r_position.z),
+		float3(r_tangent_u.x,r_tangent_u.y,r_tangent_u.z), // orthogonalization
+		float3(r_tangent_v.x,r_tangent_v.y,r_tangent_v.z));// orthogonalization
+	*/
+	
+	// Version 2
+	float4 r_position = transform * float4(coordinate.position.x,coordinate.position.y,coordinate.position.z,1);
+	//Try aproximating it for the case that the rotation is only aroud z and assuming the texture layout is nice and z is ~constant.
+	//just pretend there is no other rotation happening
+	//get rid of scaling and translation. Then extract fields where sin and cos would be in a simple 2d transform around z.
+	float4 u = transform[0];
+	float3 ru = ::math::normalize(float3(u.x,u.y,u.z));
+	float cos =  ru.x; 
+	float sin =  -ru.y;
+	//TODO: at least also handle sign of z?
+	//TODO: handle tangent becoming 0 
+	
+	
+	return ::base::texture_coordinate_info(
+		float3(r_position.x,r_position.y,r_position.z),
+		::math::normalize(cos * coordinate.tangent_u - sin * coordinate.tangent_v),
+		::math::normalize(cos * coordinate.tangent_v + sin * coordinate.tangent_u));
+}
+
+::base::texture_coordinate_info vmat_transform(
+								float2 translation = float2(0.0, 0.0),
+								float rotation	 = 0.0,				// rotation in degrees
+								float2 scaling	 = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space	   = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.			 ,  0. ,	 0.,
+			 0.			, 1.0 /scaling.y ,  0. ,	 0.,
+			 0.			, 0.			 ,  1.0,	 0.,
+			 translation.x , translation.y  ,  0.0,	 1.);
+
+	float s = ::math::sin(rotation_rad);
+	float c = ::math::cos(rotation_rad);
+	float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return transform_coordinate_2(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+float histogram_range(float input, float range = 1.0f, float position = 0.5f)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+
+float remap_xy_to_0_1(float input, float x, float y)
+{
+	return (input - x)/(y - x);
+}
+
+color remap(color input, color low, color high)
+{
+	return low + input * (high - low);
+}
+
+
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+
+int lowbias32(int x)
+{
+	x ^= x >>> 16;
+	x *= 0x7feb352d;
+	x ^= x >>> 15;
+	x *= 0x846ca68b;
+	x ^= x >>> 16;
+	return x;
+}
+
+
+float uint2float(int x)
+{
+	return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+	return ret_val;
+}	
+
+float3 srgb2rgb(float3 val) 
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+
+float3 rgb2srgb(float3 val) [[ ::anno::unused() ]] {
+	return ::math::pow( ::math::max(val, float3(0.f)), float3(1./2.2) );
+}
+
+
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;	 // patch scale inside example texture
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m)
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m)
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m);
+	else
+		O = (W[0] =	  -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m)
+		  + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m)
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m);
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+
+color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, .5),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+
+float3 endless_normal(
+	uniform texture_2d texture = texture_2d(),
+	float factor = 1.0,
+	bool flip_tangent_u = false,
+	bool flip_tangent_v = false,
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0
+	//bool srgb2rgb = false,
+	//bool rgb2srgb = false
+)
+{
+	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
+	float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
+	
+	if (flip_tangent_u)
+		transformed_tangent_u=-transformed_tangent_u;
+	if (flip_tangent_v)
+		transformed_tangent_v=-transformed_tangent_v;
+
+	// normalized Lookup
+	float3 tangent_space_normal =
+		 (nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		) - 0.5) * (2.0 * factor);
+		
+		 
+	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
+		  uvw.tangent_v * tangent_space_normal.y +
+		  ::state::normal()*1.0); 
+	//return ::state::normal();
+}
+
+
+float histogram_scan(float input, float width, float position)
+{	
+	float low = ::math::clamp(1.0f - position * 2.0, 0.0f ,1.0f);
+	float high = ::math::clamp(position > 0.5f ? 1.0 : 2.0f - 2 * position, 0.0f, 1.0f);
+	//float center = (low + high)/2.0f);
+	float offset = ((high - low) / 2.0) * width;
+	low += offset;
+	high -= offset;
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					low,
+					high),
+				0.0,
+				1.0);
+}
+
+
+
+
+export material Mortar(
+		uniform bool infinite_tiling = true [[
+		::anno::description("Enables infinite tiling feature which removes repeating texture patterns. Note that depending on the material this feature changes the appearance of the material slightly."),
+		::anno::display_name("Infinite Tiling"),
+		::anno::in_group("Appearance"),
+		::anno::ui_order(0)
+	]],
+	color mortar_tint = color(0.612066f) [[
+		::anno::description("Choose a color to overlay the mortar with. Set to neutral gray for original tone."),
+		::anno::display_name("Mortar Tint"),
+		::anno::in_group("Appearance"),
+		::anno::ui_order(1)
+	]],
+	
+	float brightness_adjust = 0.f [[
+        ::anno::description("Adjusts the final brightness of the grout."),
+        ::anno::display_name("Brightness"),
+        ::anno::in_group("Appearance"),
+        ::anno::hard_range(0.f, 1.f),
+        ::anno::ui_order(2)
+    ]],
+	
+	float roughness = 0.71f [[
+		::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+		::anno::display_name("Roughness"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f),
+		::anno::ui_order(3)
+	]],
+	float diffuse_grain = 0.0f [[
+		::anno::description("Darkens the mortar and adds a grainy overlay."),
+		::anno::display_name("Diffuse Grain"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 1.f),
+		::anno::ui_order(4)
+	]],
+	uniform float bump_strength = 0.78f [[
+		::anno::description("Determines the degree of bumpiness."),
+		::anno::display_name("Bump Strength"),
+		::anno::in_group("Appearance"),
+		::anno::hard_range(0.f, 2.f),
+		::anno::soft_range(0.f, 1.f),
+		::anno::ui_order(5)
+	]],
+	float2 texture_translate = float2(0.f) [[
+		::anno::description("Controls the position of the texture."),
+		::anno::display_name("Texture Translate"),
+		::anno::in_group("Transform"),
+		::anno::ui_order(6)
+	]],
+	float texture_rotate = 0.f [[
+		::anno::description("Rotates angle of the texture in degrees."),
+		::anno::display_name("Texture Rotate"),
+		::anno::in_group("Transform"),
+		::anno::soft_range(0.f, 360.f),
+		::anno::ui_order(7)
+	]],
+	float2 texture_scale = float2(1.f) [[
+		::anno::description("Larger numbers increase the size."),
+		::anno::display_name("Texture Scale"),
+		::anno::in_group("Transform"),
+		::nvidia::core_definitions::dimension(float2(.15f, .15f)),
+		::anno::ui_order(8)
+	]],
+	uniform int uv_space_index = 0 [[
+		::anno::description("Uses selected UV space for material."),
+		::anno::display_name("UV Space Index"),
+		::anno::in_group("Advanced"),
+		::anno::ui_order(9)
+	]],
+	uniform bool roundcorners_enable = false [[
+		::anno::description("Enables the round corner effect. Comes at a slight performance cost as additional raytracing calls are required to evaluate the round corner effect."),
+		::anno::display_name("Enable Round Corners"),
+		::anno::in_group("Round Corners"),
+		::anno::ui_order(10)
+	]],
+	uniform float roundcorners_radius_mm = 1.5f [[
+		::anno::description("Radius of the rounded corners in millimeters."),
+		::anno::display_name("Round Corner Radius (mm)"),
+		::anno::in_group("Round Corners"),
+		::anno::soft_range(0.f, 10.f),
+		::anno::ui_order(11)
+	]],
+	uniform bool roundcorners_across_materials = true [[
+		::anno::description("Applies the round corner effect across different materials when enabled."),
+		::anno::display_name("Across Materials"),
+		::anno::in_group("Round Corners"),
+		::anno::ui_order(12)
+	]]
+)
+[[
+	::anno::description("Mortar material to fill grouts with."),
+	::anno::display_name("Mortar Gray"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("concrete", "mortar", "construction", "new", "cement", "hard", "rough", "new", "neutral", "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::thumbnail("./.thumbs/Mortar.Mortar.png"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]]
+ = 
+    let {
+        bool tmp0 = false;
+		
+        material_surface tmp1(::df::custom_curve_layer(0.0399999991f, 1.f, 5.f, histogram_scan(float3(infinite_tiling ? endless_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.670588017f, 0.882353008f, 0.533333004f), 4.f, false) : ::base::file_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.129999995f, ::math::lerp(0.140000001f, 0.50999999f, roughness)), ::df::microfacet_ggx_smith_bsdf(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.670588017f, 0.882353008f, 0.533333004f), 4.f, false) : ::base::file_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, ::math::lerp(0.399999976f, 0.779999971f, roughness)) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.670588017f, 0.882353008f, 0.533333004f), 4.f, false) : ::base::file_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, ::math::lerp(0.399999976f, 0.779999971f, roughness)), histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.670588017f, 0.882353008f, 0.533333004f), 4.f, false) : ::base::file_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, ::math::lerp(0.399999976f, 0.779999971f, roughness)) * histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.670588017f, 0.882353008f, 0.533333004f), 4.f, false) : ::base::file_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 1.f, ::math::lerp(0.399999976f, 0.779999971f, roughness)), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect, ""), ::df::weighted_layer(1.f, ::df::diffuse_reflection_bsdf(nvidia::core_definitions::blend_colors(remap(nvidia::core_definitions::blend_colors(nvidia::core_definitions::blend_colors(infinite_tiling ? endless_texture(texture_2d("./textures/mortar_diff.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.517647028f, 0.517647028f, 0.513724983f), 4.f, true) : ::base::file_texture(texture_2d("./textures/mortar_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, color(::math::pow(float3(infinite_tiling ? endless_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.670588017f, 0.882353008f, 0.533333004f), 4.f, false) : ::base::file_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 2.20000005f)), ::base::color_layer_multiply, 0.449999988f).tint, color(::math::pow(float3(infinite_tiling ? endless_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.670588017f, 0.882353008f, 0.533333004f), 4.f, false) : ::base::file_texture(texture_2d("./textures/mortar_multi_R_rough_G_ao_B_noise.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 2.20000005f)), ::base::color_layer_hardlight, diffuse_grain).tint, color(brightness_adjust * 0.300000012f), color(1.f, 1.f, 1.f)), mortar_tint, ::base::color_layer_overlay, 1.f).tint, 0.f, ""), bsdf(), infinite_tiling ? endless_normal(texture_2d("./textures/mortar_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.501960993f, 0.498039007f, 0.964706004f), 4.f) : ::base::tangent_space_normal_texture(texture_2d("./textures/mortar_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), infinite_tiling ? endless_normal(texture_2d("./textures/mortar_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 4.f, float3(0.501960993f, 0.498039007f, 0.964706004f), 4.f) : ::base::tangent_space_normal_texture(texture_2d("./textures/mortar_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f)), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        color tmp3 = color(1.f, 1.f, 1.f);
+        material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
+        material_geometry tmp5(float3(0.f), 1.f, roundcorners_enable ? ::state::rounded_corner_normal(roundcorners_radius_mm * 0.00100000005f, roundcorners_across_materials, 1.f) : ::state::normal());
+    } in
+        material(
+            thin_walled: tmp0,
+            surface: tmp1,
+            backface: tmp2,
+            ior: tmp3,
+            volume: tmp4,
+            geometry: tmp5);
+
+
+
+export material Mortar_Moist(*)
+[[
+	::anno::description("Mortar material to fill grouts with."),
+	::anno::display_name("Mortar Moist Gray"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("concrete", "mortar", "construction", "new", "cement", "hard", "rough", "new", "neutral", "moist",  "gray")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::thumbnail("./.thumbs/Mortar.Mortar_Moist.png"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Mortar(
+	infinite_tiling:			true,
+	mortar_tint:				color(0.173439f),
+	brightness_adjust:			0.0f,
+	roughness:					0.0f,
+	diffuse_grain:				0.0f,
+	bump_strength:				.78f,
+	texture_translate:			float2(0.0f),
+	texture_rotate:				0.0f,
+	texture_scale:				float2(1.0f),
+	uv_space_index:				0,
+	roundcorners_enable:		false,
+	roundcorners_radius_mm:		1.5,
+	roundcorners_across_materials: true
+);
+
+
+export material Mortar_White(*)
+[[
+	::anno::description("Mortar material to fill grouts with."),
+	::anno::display_name("Mortar White"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("concrete", "mortar", "construction", "new", "cement", "hard", "rough", "new", "neutral", "light", "white")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::thumbnail("./.thumbs/Mortar.Mortar_White.png"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Mortar(
+	infinite_tiling:			true,
+	mortar_tint:				color(0.974300f),
+	brightness_adjust:			0.23f,
+	roughness:					0.83f,
+	diffuse_grain:				0.0f,
+	bump_strength:				.78f,
+	texture_translate:			float2(0.0f),
+	texture_rotate:				0.0f,
+	texture_scale:				float2(1.0f),
+	uv_space_index:				0,
+	roundcorners_enable:		false,
+	roundcorners_radius_mm:		1.5,
+	roundcorners_across_materials: true
+);
+
+
+
+export material Mortar_Antique_White(*)
+[[
+	::anno::description("Mortar material to fill grouts with."),
+	::anno::display_name("Mortar Antique White"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("concrete", "mortar", "construction", "new", "cement", "hard", "rough", "new", "neutral", "light", "white")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::thumbnail("./.thumbs/Mortar.Mortar_Antique_White.png"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Mortar(
+	infinite_tiling:			true,
+	mortar_tint:				color(1.000000f, 0.940601f, 0.766744f),
+	brightness_adjust:			0.44f,
+	roughness:					0.83f,
+	diffuse_grain:				0.0f,
+	bump_strength:				.78f,
+	texture_translate:			float2(0.0f),
+	texture_rotate:				0.0f,
+	texture_scale:				float2(1.0f),
+	uv_space_index:				0,
+	roundcorners_enable:		false,
+	roundcorners_radius_mm:		1.5,
+	roundcorners_across_materials: true
+);
+
+
+export material Mortar_Sand_White(*)
+[[
+	::anno::description("Mortar material to fill grouts with."),
+	::anno::display_name("Mortar Sand White"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("concrete", "mortar", "construction", "new", "cement", "hard", "rough", "new", "neutral", "sand", "light", "white")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::thumbnail("./.thumbs/Mortar.Mortar_Sand_White.png"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Mortar(
+	infinite_tiling:			true,
+	mortar_tint:				color(1.000000f, 0.875138f, 0.673049f),
+	brightness_adjust:			0.18f,
+	roughness:					0.83f,
+	diffuse_grain:				0.0f,
+	bump_strength:				.78f,
+	texture_translate:			float2(0.0f),
+	texture_rotate:				0.0f,
+	texture_scale:				float2(1.0f),
+	uv_space_index:				0,
+	roundcorners_enable:		false,
+	roundcorners_radius_mm:		1.5,
+	roundcorners_across_materials: true
+);
+
+
+export material Mortar_Yellow(*)
+[[
+	::anno::description("Mortar material to fill grouts with."),
+	::anno::display_name("Mortar Yellow"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("concrete", "mortar", "construction", "new", "cement", "hard", "rough", "new", "warm", "yellow")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::thumbnail("./.thumbs/Mortar.Mortar_Yellow.png"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Mortar(
+	infinite_tiling:			true,
+	mortar_tint:				color(1.000000f, 0.789314f, 0.470440f),
+	brightness_adjust:			0.22f,
+	roughness:					0.83f,
+	diffuse_grain:				0.0f,
+	bump_strength:				.78f,
+	texture_translate:			float2(0.0f),
+	texture_rotate:				0.0f,
+	texture_scale:				float2(1.0f),
+	uv_space_index:				0,
+	roundcorners_enable:		false,
+	roundcorners_radius_mm:		1.5,
+	roundcorners_across_materials: true
+);
+
+
+export material Mortar_Clay(*)
+[[
+	::anno::description("Mortar material to fill grouts with."),
+	::anno::display_name("Mortar Clay"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("concrete", "mortar", "construction", "new", "cement", "hard", "rough", "new", "warm", "clay")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::thumbnail("./.thumbs/Mortar.Mortar_Clay.png"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Mortar(
+	infinite_tiling:			true,
+	mortar_tint:				color(0.941f, 0.53f, 0.41f),
+	brightness_adjust:			0.42f,
+	roughness:					0.83f,
+	diffuse_grain:				0.95f,
+	bump_strength:				.78f,
+	texture_translate:			float2(0.0f),
+	texture_rotate:				0.0f,
+	texture_scale:				float2(1.0f),
+	uv_space_index:				0,
+	roundcorners_enable:		false,
+	roundcorners_radius_mm:		1.5,
+	roundcorners_across_materials: true
+);
+
+
+export material Mortar_Tan(*)
+[[
+	::anno::description("Mortar material to fill grouts with."),
+	::anno::display_name("Mortar Tan"),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::key_words(string[]("concrete", "mortar", "construction", "new", "cement", "hard", "rough", "new", "neutral", "brown", "tan")),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::thumbnail("./.thumbs/Mortar.Mortar_Tan.png"),
+	::anno::contributor("Ruediger Raab"),
+	::anno::contributor("Maik Rohland")
+]] = Mortar(
+	infinite_tiling:			true,
+	mortar_tint:				color(0.598942f, 0.470440f, 0.358654f),
+	brightness_adjust:			0.42f,
+	roughness:					0.83f,
+	diffuse_grain:				0.95f,
+	bump_strength:				.78f,
+	texture_translate:			float2(0.0f),
+	texture_rotate:				0.0f,
+	texture_scale:				float2(1.0f),
+	uv_space_index:				0,
+	roundcorners_enable:		false,
+	roundcorners_radius_mm:		1.5,
+	roundcorners_across_materials: true
+);

code/third_party/vMaterials_2/Concrete/Spongy_Concrete_Weathered.mdl

@@ -0,0 +1,467 @@
+/******************************************************************************
+ *     Copyright 2024 NVIDIA Corporation. All rights reserved.
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA's Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+
+mdl 1.4;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+const string DESCRIPTION = "A spongy, slightly worn concrete material";
+
+::base::texture_coordinate_info vmat_transform(
+								uniform float2 translation = float2(0.0, 0.0),
+								uniform float rotation     = 0.0,
+								uniform float2 scaling     = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space       = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.             ,  0. ,     0.,
+			 0.            , 1.0 /scaling.y ,  0. ,     0.,
+			 0.            , 0.             ,  1.0,     0.,
+			 translation.x , translation.y  ,  0.0,     1.);
+
+    float s = ::math::sin(rotation_rad);
+    float c = ::math::cos(rotation_rad);
+    float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return ::base::transform_coordinate(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+
+
+float histogram_range(float input, float range, float position)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+float remap_xy_to_0_1(float input, float x, float y)
+{
+	return (input - x)/(y - x);
+}
+
+float histogram_scan_big(float input, float width, float position)
+{
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(-width, 1.0, position),
+					::math::lerp(0.0, 1.0 + width, position)),
+				0.0,
+				1.0);
+}
+
+
+
+float uint2float(int x)
+{
+    return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+int lowbias32(int x)
+{
+    x ^= x >>> 16;
+    x *= 0x7feb352d;
+    x ^= x >>> 15;
+    x *= 0x846ca68b;
+    x ^= x >>> 16;
+    return x;
+}
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+    return ret_val;
+}    
+
+float3 srgb2rgb(float3 val)
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;     // patch scale inside example texture
+	float CON = 1.0f;
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m*float(CON))
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m*float(CON))
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m*float(CON));
+	else
+		O = (W[0] =      -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m*float(CON))
+	      + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m*float(CON))
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m*float(CON));
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+
+color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+
+float3 endless_normal(
+	uniform texture_2d texture = texture_2d(),
+	float factor = 1.0,
+	bool flip_tangent_u = false,
+	bool flip_tangent_v = false,
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0
+)
+{
+	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
+    float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
+	
+	if (flip_tangent_u)
+		transformed_tangent_u=-transformed_tangent_u;
+	if (flip_tangent_v)
+		transformed_tangent_v=-transformed_tangent_v;
+
+	// normalized Lookup
+	float3 tangent_space_normal =
+         (nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		) - 0.5) * (2.0 * factor);
+		
+	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
+          uvw.tangent_v * tangent_space_normal.y +
+          ::state::normal()*1.0); 
+}
+
+float3 normalmap_normal(
+	uniform texture_2d texture,
+	float factor = 1.0,
+	::base::texture_coordinate_info uvw = ::base::texture_coordinate_info()
+)
+{
+	float3 lookup = (::tex::lookup_float3(texture, float2(uvw.position.x, uvw.position.y)) - 0.5) * (factor * 2.0);
+	return ::math::normalize(uvw.tangent_u * lookup.x + uvw.tangent_v * lookup.y + ::state::normal());
+}
+
+
+export material Spongy_Concrete_Weathered(
+    uniform bool infinite_tiling = true [[
+        ::anno::display_name("Infinite Tiling"),
+		::anno::description("Enables infinite tiling feature which removes repeating texture patterns."),
+        ::anno::in_group("Appearance")
+    ]],
+    float roughness = 0.12f [[
+        ::anno::display_name("Roughness"),
+		::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance")
+    ]],
+    float concrete_brightness = 0.6f [[
+        ::anno::display_name("Brightness"),
+		::anno::description("Adjusts the lightness of the material."),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance")
+    ]],
+    float wetness = 0.0f [[
+        ::anno::display_name("Wetness"),
+		::anno::description("Adjusts the reflectivity of the water stains that flow down the material."),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance", "Wet Stains")
+    ]],
+    float water_darkening = 0.0 [[
+        ::anno::display_name("Water Darkening"),
+		::anno::description("Adjusts the brightness of the water stains that flow down the material."),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance", "Wet Stains")
+    ]],
+    float dirt_deposit_amount = 0.0 [[
+        ::anno::display_name("Dirt Amount"),
+		::anno::description("Adds a layer of dirt on top of the material."),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance", "Dirt Layer")
+    ]],
+    float dirt_brightness = 0.30f [[
+        ::anno::display_name("Dirt Brightness"),
+		::anno::description("Adjusts the lightness of the dirt layer."),
+		::anno::soft_range(0.0f, 1.0f),
+		::anno::hard_range(0.0f, 2.0f),
+        ::anno::in_group("Appearance", "Dirt Layer")
+    ]],
+    float dirt_scale = 1.f [[
+        ::anno::display_name("Dirt Scale"),
+		::anno::description("Adjusts the size of the dirt layer texture."),
+        ::anno::in_group("Appearance", "Dirt Layer")
+    ]],
+	uniform float2 texture_translate =  float2(0.0f)
+	[[
+		::anno::display_name("Translate"),
+		::anno::description("Controls the position of the texture."),
+		::anno::in_group("Adjustments")
+	]],
+	uniform float texture_rotate =  0.f
+	[[
+		::anno::display_name("Rotate"),
+		::anno::description("Rotates angle of the texture in degrees."),
+		::anno::in_group("Adjustments")
+	]],
+	uniform float2 texture_scale =  float2(1.0f)
+	[[
+		::anno::display_name("Scale"),
+		::anno::description("Larger numbers increase the size."),
+		::nvidia::core_definitions::dimension(float2(1.0, 1.0)),
+		::anno::in_group("Adjustments")
+	]],
+    uniform int uv_space_index = 0 [[
+        ::anno::display_name("UV Space Index"),
+        ::anno::in_group("Advanced")
+    ]]
+)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Weathered - Shiny"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Spongy_Concrete_Weathered.Spongy_Concrete_Weathered.png"),
+	::anno::key_words(string[]("aec", "concrete", "facade", "wall", "infinite tiling", "construction", "architecture", "exterior", "weathered", "worn", "aged", "multimaterial", "gray"))
+]]
+ = 
+    let {
+        bool tmp0 = false;
+		float remap_dirt_deposit_amount = dirt_deposit_amount * 1.7;
+		
+        material_surface tmp1(
+            ::df::weighted_layer(histogram_range(float3(endless_texture(texture_2d("./textures/spongy_concrete_weathered_mask_dirt.jpg", ::tex::gamma_linear), ::base::coordinate_source(::base::texture_coordinate_uvw, 0), 4.f / dirt_scale, float3(0.629999995f), 8.f, true))[0], 0.980000019f, ::math::lerp(1.f, 0.672000051f, remap_dirt_deposit_amount)), ::df::custom_curve_layer(0.0299999993f, 1.f, 5.f, ::math::pow(histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.513999999f, 0.875f, 0.787999988f), 8.f, false) : ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.197000012f, 0.699999988f), 2.20000005f), ::df::microfacet_ggx_smith_bsdf((histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.513999999f, 0.875f, 0.787999988f), 8.f, false) : ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], ::math::lerp(0.295000017f, 0.873000026f, roughness), ::math::lerp(0.5f, 0.951000035f, roughness)) - wetness * ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_mask_wet.png", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, ::base::transform_coordinate(::base::rotation_translation_scale(float3(0.f), float3(0.f), float3(1.f)), ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0))), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono) * (histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.513999999f, 0.875f, 0.787999988f), 8.f, false) : ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], ::math::lerp(0.295000017f, 0.873000026f, roughness), ::math::lerp(0.5f, 0.951000035f, roughness)) - wetness * ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_mask_wet.png", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, ::base::transform_coordinate(::base::rotation_translation_scale(float3(0.f), float3(0.f), float3(1.f)), ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0))), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono), (histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.513999999f, 0.875f, 0.787999988f), 8.f, false) : ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], ::math::lerp(0.295000017f, 0.873000026f, roughness), ::math::lerp(0.5f, 0.951000035f, roughness)) - wetness * ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_mask_wet.png", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, ::base::transform_coordinate(::base::rotation_translation_scale(float3(0.f), float3(0.f), float3(1.f)), ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0))), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono) * (histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.513999999f, 0.875f, 0.787999988f), 8.f, false) : ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], ::math::lerp(0.295000017f, 0.873000026f, roughness), ::math::lerp(0.5f, 0.951000035f, roughness)) - wetness * ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_mask_wet.png", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, ::base::transform_coordinate(::base::rotation_translation_scale(float3(0.f), float3(0.f), float3(1.f)), ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0))), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect, ""), ::df::diffuse_reflection_bsdf(::nvidia::core_definitions::blend_colors(infinite_tiling ? endless_texture(texture_2d("./textures/spongy_concrete_weathered_diff.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.722000003f, 0.713999987f, 0.709999979f), 8.f, true) : ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, color(::math::lerp(0.349999994f, 0.899999976f, concrete_brightness) - ::base::file_texture(texture_2d("./textures/spongy_concrete_weathered_mask_wet.png", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, ::base::transform_coordinate(::base::rotation_translation_scale(float3(0.f), float3(0.f), float3(1.f)), ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0))), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono * ::math::lerp(0.f, 0.561000049f, water_darkening)), ::base::color_layer_multiply, 1.f).tint, 0.f, ""), ::state::normal()), ::df::diffuse_reflection_bsdf(dirt_brightness * color(0.31854701f, 0.275550991f, 0.252952009f), 0.f, ""), ::state::normal()),
+            material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        color tmp3 = color(1.f, 1.f, 1.f);
+        material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
+        material_geometry tmp5(
+            float3(0.f),
+            1.f,
+            infinite_tiling ? endless_normal(texture_2d("./textures/spongy_concrete_weathered_norm.jpg", ::tex::gamma_linear), 1.f, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.5f, 0.5f, 1.f), 8.f) : normalmap_normal(texture_2d("./textures/spongy_concrete_weathered_norm.jpg", ::tex::gamma_linear), 1.f, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index)));
+    } in
+        material(
+            thin_walled: tmp0,
+            surface: tmp1,
+            backface: tmp2,
+            ior: tmp3,
+            volume: tmp4,
+            geometry: tmp5);
+
+
+// 2
+export material Spongy_Concrete_Weathered_Rough(*)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Weathered - Rough"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Spongy_Concrete_Weathered.Spongy_Concrete_Weathered_Rough.png"),
+	::anno::key_words(string[]("aec", "concrete", "facade", "wall", "infinite tiling", "construction", "architecture", "exterior", "weathered", "worn", "aged", "multimaterial", "gray"))
+]] = Spongy_Concrete_Weathered (
+	infinite_tiling:	true,
+	roughness:			0.75f,
+	concrete_brightness: 0.6f,
+	wetness:			0.0f,
+	water_darkening:	0.0f,
+	dirt_deposit_amount: 0.0f,
+	dirt_brightness:	0.0f,
+	dirt_scale:			1.f,
+	texture_translate:	float2(0.0f),
+	texture_rotate: 	0.f,
+	texture_scale:		float2(1.0f),
+	uv_space_index: 	0
+);
+
+// 3
+export material Spongy_Concrete_Weathered_Dark_Dirt(*)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Weathered - Dark Dirt"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Spongy_Concrete_Weathered.Spongy_Concrete_Weathered_Dark_Dirt.png"),
+	::anno::key_words(string[]("aec", "concrete", "facade", "wall", "infinite tiling", "construction", "architecture", "exterior", "weathered", "worn", "aged", "multimaterial", "gray"))
+]] = Spongy_Concrete_Weathered (
+	infinite_tiling:	true,
+	roughness:			0.55f,
+	concrete_brightness: 0.79f,
+	wetness:			0.0f,
+	water_darkening:	0.0f,
+	dirt_deposit_amount: 1.0f,
+	dirt_brightness:	0.2f,
+	dirt_scale:			1.f,
+	texture_translate:	float2(0.0f),
+	texture_rotate: 	0.f,
+	texture_scale:		float2(1.0f),
+	uv_space_index: 	0
+);
+
+
+// 4
+export material Spongy_Concrete_Weathered_Light_Dirt(*)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Weathered - Light Dirt"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Spongy_Concrete_Weathered.Spongy_Concrete_Weathered_Light_Dirt.png"),
+	::anno::key_words(string[]("aec", "concrete", "facade", "wall", "infinite tiling", "construction", "architecture", "exterior", "weathered", "worn", "aged", "dirt", "multimaterial", "gray"))
+]] = Spongy_Concrete_Weathered (
+	infinite_tiling:	true,
+	roughness:			0.55f,
+	concrete_brightness: 0.55f,
+	wetness:			0.0f,
+	water_darkening:	0.0f,
+	dirt_deposit_amount: 1.0f,
+	dirt_brightness:	0.8f,
+	dirt_scale:			1.f,
+	texture_translate:	float2(0.0f),
+	texture_rotate: 	0.f,
+	texture_scale:		float2(1.0f),
+	uv_space_index: 	0
+);
+
+// 5
+export material Spongy_Concrete_Weathered_Wet_Flows(*)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Weathered - Wet Flows"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Spongy_Concrete_Weathered.Spongy_Concrete_Weathered_Wet_Flows.png"),
+	::anno::key_words(string[]("aec", "concrete", "facade", "wall", "infinite tiling", "construction", "architecture", "exterior", "weathered", "worn", "aged", "dirt", "multimaterial", "gray"))
+]] = Spongy_Concrete_Weathered (
+	infinite_tiling:	true,
+	roughness:			0.69f,
+	concrete_brightness: 0.6f,
+	wetness:			0.8f,
+	water_darkening:	0.7f,
+	dirt_deposit_amount: 0.0f,
+	dirt_brightness:	0.25f,
+	dirt_scale:			1.f,
+	texture_translate:	float2(0.0f),
+	texture_rotate: 	0.f,
+	texture_scale:		float2(1.0f),
+	uv_space_index: 	0
+);

code/third_party/vMaterials_2/Concrete/Spongy_Concrete_Weathered_Mossy.mdl

@@ -0,0 +1,393 @@
+/******************************************************************************
+ *     Copyright 2024 NVIDIA Corporation. All rights reserved.
+ ******************************************************************************
+ 
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our 
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL 
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA's Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+
+mdl 1.4;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+const string COPYRIGHT = 
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+const string DESCRIPTION = "A spongy concrete material with a worn, mossy appearance.";
+
+::base::texture_coordinate_info vmat_transform(
+								uniform float2 translation = float2(0.0, 0.0),
+								uniform float rotation     = 0.0,
+								uniform float2 scaling     = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space       = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.             ,  0. ,     0.,
+			 0.            , 1.0 /scaling.y ,  0. ,     0.,
+			 0.            , 0.             ,  1.0,     0.,
+			 translation.x , translation.y  ,  0.0,     1.);
+
+    float s = ::math::sin(rotation_rad);
+    float c = ::math::cos(rotation_rad);
+    float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return ::base::transform_coordinate(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+
+
+float histogram_range(float input, float range, float position)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+float remap_xy_to_0_1(float input, float x, float y)
+{
+	return (input - x)/(y - x);
+}
+
+float histogram_scan_big(float input, float width, float position)
+{
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(-width, 1.0, position),
+					::math::lerp(0.0, 1.0 + width, position)),
+				0.0,
+				1.0);
+}
+
+
+
+float uint2float(int x)
+{
+    return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+int lowbias32(int x)
+{
+    x ^= x >>> 16;
+    x *= 0x7feb352d;
+    x ^= x >>> 15;
+    x *= 0x846ca68b;
+    x ^= x >>> 16;
+    return x;
+}
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+    return ret_val;
+}    
+
+float3 srgb2rgb(float3 val)
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;     // patch scale inside example texture
+	float CON = 1.0f;
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m*float(CON))
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m*float(CON))
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m*float(CON));
+	else
+		O = (W[0] =      -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m*float(CON))
+	      + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m*float(CON))
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m*float(CON));
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+
+color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+
+
+float3 normalmap_normal(
+	uniform texture_2d texture,
+	float factor = 1.0,
+	::base::texture_coordinate_info uvw = ::base::texture_coordinate_info()
+)
+{
+	float3 lookup = (::tex::lookup_float3(texture, float2(uvw.position.x, uvw.position.y)) - 0.5) * (factor * 2.0);
+	return ::math::normalize(uvw.tangent_u * lookup.x + uvw.tangent_v * lookup.y + ::state::normal());
+}
+
+
+export material Spongy_Concrete_Weathered_Mossy(
+    float roughness = 0.12f [[
+        ::anno::description("Adjusts the roughness of the material."),
+        ::anno::display_name("Roughness"),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance")
+    ]],
+    float brightness = 0.6f [[
+        ::anno::description("Adjusts the brightness of the material."),
+        ::anno::display_name("Brightness"),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance")
+    ]],
+    float bump_factor = 1.f [[
+        ::anno::description("Drives the intensity of the surface bump."),
+        ::anno::display_name("Bump Factor"),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance")
+    ]],
+    float dirt_amount = 0.f [[
+        ::anno::description("Adds a thin layer of dirt on top of the material."),
+        ::anno::display_name("Dirt Amount"),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance", "Dirt Layer")
+    ]],
+    float dirt_brightness = 0.0f [[
+        ::anno::description("Adjusts the brightness of the dirt layer."),
+        ::anno::display_name("Dirt Brightness"),
+		::anno::hard_range(0.0f, 1.0f),
+        ::anno::in_group("Appearance", "Dirt Layer")
+    ]],
+    float dirt_scale = 1.f [[
+        ::anno::description("Scales the size of the dirt layer."),
+        ::anno::display_name("Dirt Scale"),
+        ::anno::in_group("Appearance", "Dirt Layer")
+    ]],
+	uniform float2 texture_translate =  float2(0.0f)
+	[[
+		::anno::display_name("Translate"),
+		::anno::description("Controls the position of the texture."),
+		::anno::in_group("Adjustments")
+	]],
+	uniform float texture_rotate =  0.f
+	[[
+		::anno::display_name("Rotate"),
+		::anno::description("Rotates angle of the texture in degrees."),
+		::anno::soft_range(0.0f, 360.0f),
+		::anno::in_group("Adjustments")
+	]],
+	uniform float2 texture_scale =  float2(1.0f)
+	[[
+		::anno::display_name("Scale"),
+		::anno::description("Larger numbers increase the size."),
+		::nvidia::core_definitions::dimension(float2(1.0, 1.0)),
+		::anno::in_group("Adjustments")
+	]],
+    uniform int uv_space_index = 0 [[
+        ::anno::description("Use the selected texture space."),
+        ::anno::display_name("UV Space Index"),
+        ::anno::in_group("Advanced")
+    ]]
+)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Spongy Weathered Mossy - Shiny"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Spongy_Concrete_Weathered_Mossy.Spongy_Concrete_Weathered_Mossy.png"),
+	::anno::key_words(string[]("aec", "concrete", "facade", "wall", "construction", "architecture", "multimaterial", "exterior", "weathered", "aged", "mossy", "gray"))
+]]
+ = 
+    let {
+        bool tmp0 = false;
+        material_surface tmp1(
+            ::df::weighted_layer(histogram_range(float3(endless_texture(texture_2d("./textures/spongy_concrete_dirt_mask.jpg", ::tex::gamma_linear), ::base::coordinate_source(::base::texture_coordinate_uvw, 0), 6.f / dirt_scale, float3(0.629999995f), 8.f, true))[0], 0.980000019f, ::math::lerp(1.f, 0.672000051f, dirt_amount)), ::df::custom_curve_layer(0.0299999993f, 1.f, 5.f, ::math::pow(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/spongy_concrete_weatheredMoss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.354692012f, 0.354692012f, 0.354692012f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.178000003f, 0.338000029f), 2.20000005f), ::df::microfacet_ggx_smith_bsdf(histogram_range(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/spongy_concrete_weatheredMoss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.354692012f, 0.354692012f, 0.354692012f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.611000001f, ::math::lerp(0.443000019f, 0.275000006f, roughness)), 1.f, ::math::lerp(0.638999999f, 0.75f, roughness)) * histogram_range(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/spongy_concrete_weatheredMoss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.354692012f, 0.354692012f, 0.354692012f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.611000001f, ::math::lerp(0.443000019f, 0.275000006f, roughness)), 1.f, ::math::lerp(0.638999999f, 0.75f, roughness)), histogram_range(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/spongy_concrete_weatheredMoss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.354692012f, 0.354692012f, 0.354692012f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.611000001f, ::math::lerp(0.443000019f, 0.275000006f, roughness)), 1.f, ::math::lerp(0.638999999f, 0.75f, roughness)) * histogram_range(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/spongy_concrete_weatheredMoss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.354692012f, 0.354692012f, 0.354692012f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.611000001f, ::math::lerp(0.443000019f, 0.275000006f, roughness)), 1.f, ::math::lerp(0.638999999f, 0.75f, roughness)), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect, ""), ::df::diffuse_reflection_bsdf(::base::file_texture(texture_2d("./textures/spongy_concrete_weatheredMoss_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(::math::lerp(0.59800005f, 0.899999976f, brightness)), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, 0.f, ""), ::state::normal()), ::df::diffuse_reflection_bsdf(dirt_brightness * color(0.31854701f, 0.275550991f, 0.252952009f), 0.f, ""), ::state::normal()),
+            material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        color tmp3 = color(1.f, 1.f, 1.f);
+        material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
+        material_geometry tmp5(
+            float3(0.f),
+            1.f,
+            normalmap_normal(texture_2d("./textures/spongy_concrete_weatheredMoss_norm.jpg", ::tex::gamma_linear), bump_factor, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index)));
+    } in
+        material(
+            thin_walled: tmp0,
+            surface: tmp1,
+            backface: tmp2,
+            ior: tmp3,
+            volume: tmp4,
+            geometry: tmp5);
+
+
+// 2
+export material Spongy_Concrete_Weathered_Mossy_Rough(*)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Spongy Weathered Mossy - Rough"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Spongy_Concrete_Weathered_Mossy.Spongy_Concrete_Weathered_Mossy_Rough.png"),
+	::anno::key_words(string[]("aec", "concrete", "facade", "wall", "construction", "architecture", "multimaterial", "exterior", "weathered", "aged", "mossy", "gray"))
+]] = Spongy_Concrete_Weathered_Mossy(
+	roughness:			0.75f,
+	brightness:			0.6f,
+	bump_factor:		1.0f,
+	dirt_amount:		0.0f,
+	dirt_brightness:	0.0f,
+	dirt_scale:			1.0f,
+	texture_translate:	float2(0.0f),
+	texture_rotate:		0.0f,
+	texture_scale:		float2(1.0f),
+	uv_space_index:		0
+);
+
+
+// 3
+export material Spongy_Concrete_Weathered_Mossy_Dark_Dirt(*)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Spongy Weathered Mossy - Dark Dirt"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Spongy_Concrete_Weathered_Mossy.Spongy_Concrete_Weathered_Mossy_Dark_Dirt.png"),
+	::anno::key_words(string[]("aec", "concrete", "facade", "wall", "construction", "architecture", "multimaterial", "exterior", "weathered", "aged", "mossy", "dirt", "gray"))
+]] = Spongy_Concrete_Weathered_Mossy(
+	roughness:			0.55f,
+	brightness:			0.79f,
+	bump_factor:		1.0f,
+	dirt_amount:		1.0f,
+	dirt_brightness:	0.2f,
+	dirt_scale:			1.0f,
+	texture_translate:	float2(0.0f),
+	texture_rotate:		0.0f,
+	texture_scale:		float2(1.0f),
+	uv_space_index:		0
+);
+
+
+// 4
+export material Spongy_Concrete_Weathered_Mossy_Light_Dirt(*)
+[[
+	::anno::author("NVIDIA vMaterials"),
+	::anno::display_name("Concrete Spongy Weathered Mossy - Light Dirt"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+	::anno::thumbnail("./.thumbs/Spongy_Concrete_Weathered_Mossy.Spongy_Concrete_Weathered_Mossy_Light_Dirt.png"),
+	::anno::key_words(string[]("aec", "concrete", "facade", "wall", "construction", "architecture", "multimaterial", "exterior", "weathered", "aged", "mossy", "dirt", "gray"))
+]] = Spongy_Concrete_Weathered_Mossy(
+	roughness:			0.35f,
+	brightness:			0.59f,
+	bump_factor:		1.0f,
+	dirt_amount:		1.0f,
+	dirt_brightness:	0.9f,
+	dirt_scale:			1.0f,
+	texture_translate:	float2(0.0f),
+	texture_rotate:		0.0f,
+	texture_scale:		float2(1.0f),
+	uv_space_index:		0
+);

code/third_party/vMaterials_2/Concrete/Stone_Pores_Weathered.mdl

@@ -0,0 +1,706 @@
+/******************************************************************************
+ *	 Copyright 2024 NVIDIA Corporation. All rights reserved.	 *
+ ******************************************************************************
+
+Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
+to any person obtaining a copy of the sample definition code that uses our
+Material Definition Language (the "MDL Materials"), to reproduce and distribute
+the MDL Materials, including without limitation the rights to use, copy, merge,
+publish, distribute, and sell modified and unmodified copies of the MDL
+Materials, and to permit persons to whom the MDL Materials is furnished to do
+so, in all cases solely for use with NVIDIA's Material Definition Language,
+subject to the following further conditions:
+
+1. The above copyright notices, this list of conditions, and the disclaimer
+that follows shall be retained in all copies of one or more of the MDL
+Materials, including in any software with which the MDL Materials are bundled,
+redistributed, and/or sold, and included either as stand-alone text files,
+human-readable headers or in the appropriate machine-readable metadata fields
+within text or binary files as long as those fields can be easily viewed by the
+user, as applicable.
+2. The name of NVIDIA shall not be used to promote, endorse or advertise any
+Modified Version without specific prior written permission, except a) to comply
+ with the notice requirements otherwise contained herein; or b) to acknowledge
+the contribution(s) of NVIDIA.
+
+THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL,
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
+THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
+*/
+
+
+mdl 1.5;
+
+import ::anno::*;
+import ::base::*;
+import ::df::*;
+import ::math::*;
+import ::state::*;
+import ::tex::*;
+import ::nvidia::core_definitions::blend_colors;
+import ::nvidia::core_definitions::dimension;
+
+
+const string COPYRIGHT =
+" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
+" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
+" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n"
+" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n"
+" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
+" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
+" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
+" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
+" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";
+
+const string DESCRIPTION = "A stone wall material";
+
+
+
+float remap(float input, float low_1, float high_1, float low_2, float high_2)
+{
+	return low_2 + ((input - low_1) * (high_2 - low_2))/(high_1 - low_1);
+}
+
+
+float3 transform_internal_to_tangent(float3 n)
+[[ 
+    ::anno::hidden() 
+]]
+{
+    return
+        n.x* float3(::state::texture_tangent_u(0).x,::state::texture_tangent_v(0).x,::state::normal().x)+
+        n.y* float3(::state::texture_tangent_u(0).y,::state::texture_tangent_v(0).y,::state::normal().y)+
+        n.z* float3(::state::texture_tangent_u(0).z,::state::texture_tangent_v(0).z,::state::normal().z);
+}
+
+// Returns the normal n in internal space, given n is in tangent space.
+float3 transform_tangent_to_internal(float3 n)
+[[ 
+    ::anno::hidden() 
+]]
+{
+    return  ::state::texture_tangent_u(0) * n.x +
+            ::state::texture_tangent_v(0) * n.y +
+            ::state::normal() * n.z ;
+}
+::base::texture_coordinate_info transform_coordinate_2(
+    float4x4 transform                                         
+        [[ ::anno::description("A transformation to be applied to the source coordinates. rotation_translation_scale() is a suggested means to compute the transformation matrix.") ]],
+    ::base::texture_coordinate_info coordinate = ::base::texture_coordinate_info()
+        [[ ::anno::description("Coordinate, typically sourced from coordinate_source or coordinate_projection.") ]]
+) [[ 
+    ::anno::description("Transform a texture coordinate by a matrix.") ,
+    ::anno::noinline()
+  ]]
+{
+
+	// Version 2
+	float4 r_position = transform * float4(coordinate.position.x,coordinate.position.y,coordinate.position.z,1);
+	//Try aproximating it for the case that the rotation is only aroud z and assuming the texture layout is nice and z is ~constant.
+	//just pretend there is no other rotation happening
+	//get rid of scaling and translation. Then extract fields where sin and cos would be in a simple 2d transform around z.
+	float4 u = transform[0];
+	float3 ru = ::math::normalize(float3(u.x,u.y,u.z));
+	float cos =  ru.x; 
+	float sin =  -ru.y;
+	
+	
+    return ::base::texture_coordinate_info(
+        float3(r_position.x,r_position.y,r_position.z),
+		::math::normalize(cos * coordinate.tangent_u - sin * coordinate.tangent_v),
+		::math::normalize(cos * coordinate.tangent_v + sin * coordinate.tangent_u));
+}
+
+
+::base::texture_coordinate_info vmat_transform(
+								float2 translation = float2(0.0, 0.0),
+								float rotation     = 0.0,				// rotation in degrees
+								float2 scaling     = float2(1.0, 1.0),
+								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
+								uniform int uv_space       = 0
+)
+{
+	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
+	float4x4 scale =
+	float4x4(1.0 /scaling.x, 0.             ,  0. ,     0.,
+			 0.            , 1.0 /scaling.y ,  0. ,     0.,
+			 0.            , 0.             ,  1.0,     0.,
+			 translation.x , translation.y  ,  0.0,     1.);
+
+    float s = ::math::sin(rotation_rad);
+    float c = ::math::cos(rotation_rad);
+    float4x4 rotate =
+	float4x4(  c  ,  -s   , 0.0 , 0.0,
+			   s  ,   c   , 0.0 , 0.0,
+			   0.0,   0.0 , 1.0 , 0.0,
+			   0. ,   0.0 , 0.0 , 1.);
+	
+	return transform_coordinate_2(scale*rotate, ::base::coordinate_source(system, uv_space));
+}
+
+
+float3 add_detail_normal(float3 nd = ::state::normal(), float3 n = ::state::normal())
+{
+    // http://blog.selfshadow.com/publications/blending-in-detail/
+    float3 n_t = transform_internal_to_tangent(n);
+    float3 nd_t = transform_internal_to_tangent(nd);
+
+    n_t=n_t + float3(0.,0.,1.);
+    nd_t = nd_t *  float3(-1.,-1.,1.);
+
+    n = n_t*::math::dot(n_t, nd_t)/n_t.z - nd_t;
+    return ::math::normalize(transform_tangent_to_internal(n));
+}
+
+float remap_xy_to_0_1(float input, float x, float y)
+{
+	return (input - x)/(y - x);
+}
+
+float histogram_scan_small(float input, float width, float position)
+{	
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(0.0, 1.0 - width, position),
+					::math::lerp(width, 1.0 , position)),
+				0.0,
+				1.0);
+}
+
+
+
+float histogram_scan_big(float input, float width, float position)
+{
+	return ::math::clamp(
+				remap_xy_to_0_1(input,
+					::math::lerp(-width, 1.0, position),
+					::math::lerp(0.0, 1.0 + width, position)),
+				0.0,
+				1.0);
+}
+
+int lowbias32(int x)
+{
+    x ^= x >>> 16;
+    x *= 0x7feb352d;
+    x ^= x >>> 15;
+    x *= 0x846ca68b;
+    x ^= x >>> 16;
+    return x;
+}
+
+float uint2float(int x)
+{
+    return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
+}
+
+float histogram_range(float input, float range = 1.0f, float position = 0.5f)
+{	
+	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
+	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
+	return ::math::lerp(low, high, input);
+}
+
+
+
+float2 rnd22(int2 p) {
+	float2 ret_val = float2(
+		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
+		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
+	);
+    return ret_val;
+}    
+
+float2x2 invert_2x2(float2x2 M)
+{
+	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
+	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
+	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
+}
+
+color hue_shift(
+	color input = color(1.0, 0.0, 0.0), 
+	float hue_adjust = 0.0f
+)
+{
+	float3 in_color = float3(input);
+	float3  kRGBToYPrime = float3 (0.299, 0.587, 0.114);
+    float3  kRGBToI      = float3 (0.596, -0.275, -0.321);
+    float3  kRGBToQ      = float3 (0.212, -0.523, 0.311);
+
+	
+	//color converted = color(kRGBToQ);
+    float3  kYIQToR     = float3 (1.0, 0.956, 0.621);
+    float3  kYIQToG     = float3 (1.0, -0.272, -0.647);
+    float3  kYIQToB     = float3 (1.0, -1.107, 1.704);
+
+    float   YPrime  = ::math::dot(in_color, kRGBToYPrime);
+    float   I       = ::math::dot(in_color, kRGBToI);
+    float   Q       = ::math::dot(in_color, kRGBToQ);
+    float   hue     = ::math::atan2(Q, I);
+    float   chroma  = ::math::sqrt(I * I + Q * Q);
+
+    hue += hue_adjust;
+
+    Q = chroma * ::math::sin(hue);
+    I = chroma * ::math::cos(hue);
+
+    float3    yIQ   = float3 (YPrime, I, Q);
+
+    return color(::math::dot (yIQ, kYIQToR),::math::dot (yIQ, kYIQToG), ::math::dot (yIQ, kYIQToB) );
+}
+
+// Taken from https://www.shadertoy.com/view/4tlBWB
+float3 hsv2rgb(float3 c)
+{
+	float4 K = float4(1.0, 2.0/3.0, 1.0/3.0, 3.0);
+    float3 p = ::math::abs(::math::frac(float3(c.x) + float3(K.x, K.y, K.z)) * 6.0 - float3(K.w));
+    return c.z * ::math::lerp(float3(K.x), ::math::clamp(p - float3(K.x), 0.0, 1.0), c.y);
+}
+
+
+float3 srgb2rgb(float3 val) 
+{
+	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
+}
+float3 nonrepeat_lookup(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5),
+	float patch_size = 8.0
+)
+{
+	
+	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
+	float Z =  patch_size;     // patch scale inside example texture
+	float CON = 1.0f;
+	
+	float3 O = float3(0.f);
+	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
+	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
+	
+	float2 U = uv_in;
+	float2 V = M * uv_in; //pre-tilted hexa coordinates
+	int2 I = int2(::math::floor(V)); // hexa-tile id
+	
+	// The mean color needs to be determined in Photoshop then to make the
+	// average color work out, take the float value and calculate the apropriate
+	// mean value as (value^(1/2.2))
+
+	float3 m = average_color;
+	
+	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
+	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
+	
+	if( F[2] > 0.f )
+
+		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m*float(CON))
+		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m*float(CON))
+		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m*float(CON));
+	else
+		O = (W[0] =      -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m*float(CON))
+	      + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m*float(CON))
+		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m*float(CON));
+	O = m + O/::math::length(W);
+	O = ::math::clamp( (O), 0.0, 1.0);
+	
+	return float3(O);
+}
+color endless_texture(
+	uniform texture_2d texture = texture_2d(),
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 10.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0,
+	bool gamma_correct_lookup = true
+)
+{
+	return gamma_correct_lookup ? color(srgb2rgb(
+			nonrepeat_lookup (
+				texture: texture,
+				uvw: uvw,
+				texture_scale: texture_scale,
+				average_color: average_color,
+				patch_size: patch_size
+			))
+		) : color(nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		));
+}
+
+
+
+float3 endless_normal(
+	uniform texture_2d texture = texture_2d(),
+	float factor = 1.0,
+	bool flip_tangent_u = false,
+	bool flip_tangent_v = false,
+	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
+	float texture_scale = 1.0,
+	float3 average_color = float3(0.5, 0.5, 1.0),
+	float patch_size = 8.0
+	//bool srgb2rgb = false,
+	//bool rgb2srgb = false
+)
+{
+	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
+    float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
+	
+	if (flip_tangent_u)
+		transformed_tangent_u=-transformed_tangent_u;
+	if (flip_tangent_v)
+		transformed_tangent_v=-transformed_tangent_v;
+
+	// normalized Lookup
+	float3 tangent_space_normal =
+         (nonrepeat_lookup (
+			texture: texture,
+			uvw: uvw,
+			texture_scale: texture_scale,
+			average_color: average_color,
+			patch_size: patch_size
+		) - 0.5) * (2.0 * factor);
+		
+		 
+	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
+          uvw.tangent_v * tangent_space_normal.y +
+          ::state::normal()*1.0); 
+	//return ::state::normal();
+}
+
+export material Stone_Pores_Weathered(
+    uniform bool infinite_tiling = true [[
+	::anno::description("Enables infinite tiling feature which removes repeating texture patterns. Note that depending on the material this feature changes the appearance of the material slightly.\t."),
+	::anno::display_name("Infinite Tiling"),
+	::anno::in_group("Appearance")
+    ]],
+    float stone_diffuse_brightness = 0.8f [[
+	::anno::description("Adjusts the lightness of the stones and pebbles."),
+	::anno::display_name("Brightness"),
+	::anno::in_group("Appearance", "Stone"),
+	::anno::hard_range(0.f, 1.f)
+    ]],
+    float reflection_roughness = 1.f [[
+	::anno::description("Controls the roughness appearance. Smaller areas are highlighted."),
+	::anno::display_name("Roughness"),
+	::anno::in_group("Appearance", "Stone"),
+	::anno::hard_range(0.f, 1.f)
+    ]],
+    uniform float stones_bump_strength = 1.f [[
+	::anno::description("Drives the bumpiness of the stones."),
+	::anno::display_name("Bump Strength"),
+	::anno::in_group("Appearance", "Stone"),
+	::anno::hard_range(0.f, 1.f)
+    ]],
+    float moss_brightness = 0.6f [[
+	::anno::description("Adjusts the brightness of the moss."),
+	::anno::display_name("Brightness"),
+	::anno::in_group("Appearance", "Moss"),
+    ::anno::hard_range(0.f, 1.f)
+    ]],
+    float moss_saturation = 0.79f [[
+	::anno::description("Controls the saturation of the moss."),
+	::anno::display_name("Saturation"),
+	::anno::in_group("Appearance", "Moss"),
+    ::anno::hard_range(0.f, 1.f)
+    ]],
+    float moss_distribution_amount = 0.f [[
+	::anno::description("A lower value makes the moss grow more unevenly across the surface."),
+	::anno::display_name("Coverage"),
+	::anno::in_group("Appearance", "Moss"),
+	::anno::hard_range(0.f, 1.f)
+    ]],
+    float moss_height_growth = 1.f [[
+	::anno::description("Controls the growth of the moss material."),
+	::anno::display_name("Growth"),
+	::anno::in_group("Appearance", "Moss"),
+	::anno::hard_range(0.f, 1.f)
+    ]],
+    float moss_weight = 1.f [[
+	::anno::description("Decreasing this parameter makes the moss layer more transparent."),
+	::anno::display_name("Weight"),
+	::anno::in_group("Appearance", "Moss"),
+	::anno::hard_range(0.f, 1.f)
+    ]],
+    float moss_moisture = 1.f [[
+	::anno::description("Makes mossy areas more reflectivy to give them a wet appearance."),
+	::anno::display_name("Moisture"),
+	::anno::in_group("Appearance", "Moss"),
+	::anno::hard_range(0.f, 1.f)
+    ]],
+    uniform float moss_bump_factor = 1.f [[
+	::anno::description("Determines the degree of bumpiness of the moss."),
+	::anno::display_name("Bump Strength"),
+	::anno::in_group("Appearance", "Moss"),
+	::anno::hard_range(0.f, 1.f)
+    ]],
+    float2 texture_translate = float2(0.f) [[
+	::anno::description("Controls the position of the texture."),
+	::anno::display_name("Translate"),
+	::anno::in_group("Transform")
+    ]],
+    float texture_rotate = 0.f [[
+	::anno::description("Rotates angle of the texture in degrees."),
+	::anno::display_name("Rotate"),
+	::anno::in_group("Transform")
+    ]],
+    float2 texture_scale = float2(0.5f) [[
+	::anno::description("Larger numbers increase the size."),
+	::anno::display_name("Scale"),
+    ::nvidia::core_definitions::dimension(float2(1.2f, 1.2f)),
+	::anno::in_group("Transform")
+    ]],
+    uniform bool enable_round_corners = false [[
+	::anno::description("Enables the round corner effect. Comes at a slight performance cost as additional raytracing calls are required to evaluate the round corner effect."),
+	::anno::display_name("Enable Round Corners"),
+	::anno::in_group("Round Corners")
+    ]],
+    uniform bool across_materials = true [[
+	::anno::description("Applies the round corner effect across different materials when enabled."),
+	::anno::display_name("Across Materials"),
+	::anno::in_group("Round Corners")
+    ]],
+    uniform float radius = 0.00200000009f [[
+	::anno::description("Radius of the rounded corners in millimeters."),
+	::anno::display_name("Round Corner Radius"),
+	::anno::in_group("Round Corners")
+    ]],
+    uniform int uv_space_index = 0 [[
+	::anno::description("Use selected UV space for material."),
+	::anno::display_name("UV Space Index"),
+	::anno::in_group("Advanced")
+    ]])
+[[
+	::anno::display_name("Stone Pores Weathered"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+    ::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "moss", "weathered", "pores", "wall", "exterior", "rough", "plant", "urban", "city", "industrial")),
+	::anno::thumbnail("./.thumbs/Stone_Pores_Weathered.Stone_Pores_Weathered.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= 
+    let {
+        bool tmp0 = false;
+        material_surface tmp1(::df::custom_curve_layer(0.0299999993f, 1.f, 5.f, histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.209999993f, 0.75999999f), ::df::microfacet_ggx_smith_bsdf(::math::lerp(::math::lerp(::math::lerp(-0.419999987f, 1.75f, float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0]), 0.75f - ::math::clamp(remap(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.5f, 1.f, 0.f, 1.f), 0.f, 1.f) * ::math::lerp(1.20000005f, -1.f, reflection_roughness), histogram_scan_small(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.200000003f, 0.600000024f)), histogram_range(::math::lerp(1.f, 0.f, float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1]), 0.48999998f, ::math::lerp(1.f, 0.680000007f, moss_moisture)), ::math::lerp(0.f, ::math::lerp(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, moss_distribution_amount)), float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], ::math::clamp(histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f)), ::math::lerp(0.f, 2.f, moss_weight))) * ::math::lerp(::math::lerp(::math::lerp(-0.419999987f, 1.75f, float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0]), 0.75f - ::math::clamp(remap(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.5f, 1.f, 0.f, 1.f), 0.f, 1.f) * ::math::lerp(1.20000005f, -1.f, reflection_roughness), histogram_scan_small(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.200000003f, 0.600000024f)), histogram_range(::math::lerp(1.f, 0.f, float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1]), 0.48999998f, ::math::lerp(1.f, 0.680000007f, moss_moisture)), ::math::lerp(0.f, ::math::lerp(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, moss_distribution_amount)), float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], ::math::clamp(histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f)), ::math::lerp(0.f, 2.f, moss_weight))), ::math::lerp(::math::lerp(::math::lerp(-0.419999987f, 1.75f, float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0]), 0.75f - ::math::clamp(remap(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.5f, 1.f, 0.f, 1.f), 0.f, 1.f) * ::math::lerp(1.20000005f, -1.f, reflection_roughness), histogram_scan_small(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.200000003f, 0.600000024f)), histogram_range(::math::lerp(1.f, 0.f, float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1]), 0.48999998f, ::math::lerp(1.f, 0.680000007f, moss_moisture)), ::math::lerp(0.f, ::math::lerp(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, moss_distribution_amount)), float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], ::math::clamp(histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f)), ::math::lerp(0.f, 2.f, moss_weight))) * ::math::lerp(::math::lerp(::math::lerp(-0.419999987f, 1.75f, float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0]), 0.75f - ::math::clamp(remap(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.5f, 1.f, 0.f, 1.f), 0.f, 1.f) * ::math::lerp(1.20000005f, -1.f, reflection_roughness), histogram_scan_small(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.200000003f, 0.600000024f)), histogram_range(::math::lerp(1.f, 0.f, float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1]), 0.48999998f, ::math::lerp(1.f, 0.680000007f, moss_moisture)), ::math::lerp(0.f, ::math::lerp(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, moss_distribution_amount)), float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], ::math::clamp(histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f)), ::math::lerp(0.f, 2.f, moss_weight))), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect, ""), ::df::weighted_layer(1.f, ::df::diffuse_reflection_bsdf(::math::lerp(nvidia::core_definitions::blend_colors(infinite_tiling ? endless_texture(texture_2d("./textures/stone_diff.jpg", ::tex::gamma_linear), ::base::coordinate_source(::base::texture_coordinate_uvw, 0), 10.f, float3(0.49019599f, 0.466666996f, 0.435294002f), 8.f, true) : ::base::file_texture(texture_2d("./textures/stone_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, color(histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[1], 0.5f, 0.200000003f)), ::base::color_layer_multiply, ::math::lerp(1.f, 0.f, stone_diffuse_brightness)).tint, hue_shift(nvidia::core_definitions::blend_colors(::base::file_texture(texture_2d("./textures/moss_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, color(::math::pow(hsv2rgb(float3(0.2214614f, ::math::lerp(0.f, 0.699999988f, moss_saturation), ::math::lerp(0.175000012f, 0.699999988f, moss_brightness))), 2.20000005f)), ::base::color_layer_overlay, 1.f).tint, 5.95100021f), moss_height_growth * ::math::lerp(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, moss_distribution_amount)), float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], ::math::clamp(histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f))), 0.f, ""), bsdf(), add_detail_normal(::math::lerp(::state::normal(), ::base::tangent_space_normal_texture(texture_2d("./textures/moss_norm.jpg", ::tex::gamma_linear), ::math::lerp(0.f, 2.f, moss_bump_factor), false, false, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f), ::math::lerp(0.f, 2.f, moss_weight) * ::math::lerp(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, moss_distribution_amount)), float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], ::math::clamp(histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f))), infinite_tiling ? endless_normal(texture_2d("./textures/stone_norm.jpg", ::tex::gamma_linear), ::math::lerp(0.f, 2.f, stones_bump_strength), false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.f, float3(0.498039007f, 0.501960993f, 0.882353008f), 3.f) : ::base::tangent_space_normal_texture(texture_2d("./textures/stone_norm.jpg", ::tex::gamma_linear), ::math::lerp(0.f, 2.f, stones_bump_strength), false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f))), add_detail_normal(::math::lerp(::state::normal(), ::base::tangent_space_normal_texture(texture_2d("./textures/moss_norm.jpg", ::tex::gamma_linear), ::math::lerp(0.f, 2.f, moss_bump_factor), false, false, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f), ::math::lerp(0.f, 2.f, moss_weight) * ::math::lerp(histogram_scan_big(float3(::base::file_texture(texture_2d("./textures/multi_moss.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, moss_distribution_amount)), float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], ::math::clamp(histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 3.f, float3(0.572548985f, 0.988234997f, 0.505882025f), 3.f, false) : ::base::file_texture(texture_2d("./textures/multi_stone.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[2], 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f))), infinite_tiling ? endless_normal(texture_2d("./textures/stone_norm.jpg", ::tex::gamma_linear), ::math::lerp(0.f, 2.f, stones_bump_strength), false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.f, float3(0.498039007f, 0.501960993f, 0.882353008f), 3.f) : ::base::tangent_space_normal_texture(texture_2d("./textures/stone_norm.jpg", ::tex::gamma_linear), ::math::lerp(0.f, 2.f, stones_bump_strength), false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f))), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
+        color tmp3 = color(1.f, 1.f, 1.f);
+        material_geometry tmp5(float3(0.f), 1.f, enable_round_corners ? ::state::rounded_corner_normal(radius, across_materials, 1.f) : ::state::normal());
+    } in
+        material(
+            thin_walled: tmp0,
+            surface: tmp1,
+            backface: tmp2,
+            ior: tmp3,
+            geometry: tmp5);
+            
+export material Dry_Bright_Stone(*)
+[[
+	::anno::display_name("Dry Bright Stone"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+    ::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "moss", "weathered", "pores", "wall", "exterior", "rough", "plant", "urban", "city", "industrial", "dry", "bright")),
+	::anno::thumbnail("./.thumbs/Stone_Pores_Weathered.Dry_Bright_Stone.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Stone_Pores_Weathered
+(
+    infinite_tiling: false,
+    stone_diffuse_brightness: 0.6f,
+    reflection_roughness: 0.7f,
+    stones_bump_strength: 1.f,
+    moss_brightness: 0.f,
+    moss_saturation: 0.f,
+    moss_distribution_amount: 0.f,
+    moss_height_growth: 0.f,
+    moss_weight: 0.f,
+    moss_moisture: 0.f,
+    moss_bump_factor: 0.f,
+    texture_translate: float2(0.0f),
+    texture_rotate: 0.0f,
+    texture_scale: float2(1.0f),
+    enable_round_corners: false,
+    radius: 1.5f,
+    across_materials: true,
+    uv_space_index: 0
+);
+
+export material Matte_Stone(*)
+[[
+	::anno::display_name("Matte Stone"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+    ::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "moss", "weathered", "pores", "wall", "exterior", "rough", "plant", "urban", "city", "industrial", "dry", "matte")),
+	::anno::thumbnail("./.thumbs/Stone_Pores_Weathered.Matte_Stone.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Stone_Pores_Weathered
+(
+    infinite_tiling: false,
+    stone_diffuse_brightness: 0.2f,
+    reflection_roughness: 0.f,
+    stones_bump_strength: 0.8f,
+    moss_brightness: 0.f,
+    moss_saturation: 0.f,
+    moss_distribution_amount: 0.f,
+    moss_height_growth: 0.f,
+    moss_weight: 0.f,
+    moss_moisture: 0.f,
+    moss_bump_factor: 0.f,
+    texture_translate: float2(0.0f),
+    texture_rotate: 0.0f,
+    texture_scale: float2(1.0f),
+    enable_round_corners: false,
+    radius: 1.5f,
+    across_materials: true,
+    uv_space_index: 0
+);
+
+export material Slightly_Grown_Moss(*)
+[[
+	::anno::display_name("Slightly Grown Moss"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+    ::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "moss", "weathered", "pores", "wall", "exterior", "rough", "plant", "urban", "city", "industrial", "dry", "slightly", "grown")),
+	::anno::thumbnail("./.thumbs/Stone_Pores_Weathered.Slightly_Grown_Moss.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Stone_Pores_Weathered
+(
+    infinite_tiling: false,
+    stone_diffuse_brightness: 1.f,
+    reflection_roughness: 0.8f,
+    stones_bump_strength: 0.5f,
+    moss_brightness: 0.8f,
+    moss_saturation: 0.89f,
+    moss_distribution_amount: 1.f,
+    moss_height_growth: 0.55f,
+    moss_weight: 1.f,
+    moss_moisture: 0.5f,
+    moss_bump_factor: 1.f,
+    texture_translate: float2(0.0f),
+    texture_rotate: 0.0f,
+    texture_scale: float2(1.0f),
+    enable_round_corners: false,
+    radius: 1.5f,
+    across_materials: true,
+    uv_space_index: 0
+);
+
+export material Soft_Grown_Moss(*)
+[[
+	::anno::display_name("Soft Grown Moss"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+    ::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "moss", "weathered", "pores", "wall", "exterior", "rough", "plant", "urban", "city", "industrial", "dry", "soft", "grown")),
+	::anno::thumbnail("./.thumbs/Stone_Pores_Weathered.Soft_Grown_Moss.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Stone_Pores_Weathered
+(
+    infinite_tiling: false,
+    stone_diffuse_brightness: 1.f,
+    reflection_roughness: 0.8f,
+    stones_bump_strength: 0.5f,
+    moss_brightness: 0.8f,
+    moss_saturation: 0.9f,
+    moss_distribution_amount: 1.f,
+    moss_height_growth: 0.8f,
+    moss_weight: 1.f,
+    moss_moisture: 0.7f,
+    moss_bump_factor: 1.f,
+    texture_translate: float2(0.0f),
+    texture_rotate: 0.0f,
+    texture_scale: float2(1.0f),
+    enable_round_corners: false,
+    radius: 1.5f,
+    across_materials: true,
+    uv_space_index: 0
+);
+
+export material Saturated_Green_Patches(*)
+[[
+	::anno::display_name("Saturated Green Patches"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+    ::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "moss", "weathered", "pores", "wall", "exterior", "rough", "plant", "urban", "city", "industrial", "dry", "saturated", "green")),
+	::anno::thumbnail("./.thumbs/Stone_Pores_Weathered.Saturated_Green_Patches.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Stone_Pores_Weathered
+(
+    infinite_tiling: false,
+    stone_diffuse_brightness: 0.f,
+    reflection_roughness: 1.f,
+    stones_bump_strength: 1.f,
+    moss_brightness: 0.8f,
+    moss_saturation: 0.85f,
+    moss_distribution_amount: 0.6f,
+    moss_height_growth: 0.9f,
+    moss_weight: 1.f,
+    moss_moisture: .21f,
+    moss_bump_factor: 1.f,
+    texture_translate: float2(0.0f),
+    texture_rotate: 0.0f,
+    texture_scale: float2(1.0f),
+    enable_round_corners: false,
+    radius: 1.5f,
+    across_materials: true,
+    uv_space_index: 0
+);
+
+export material Fadely_Yellowish_Moss(*)
+[[
+	::anno::display_name("Fadely Yellowish Moss"),
+	::anno::description(DESCRIPTION),
+	::anno::copyright_notice(COPYRIGHT),
+    ::anno::key_words(string[]("dielectric", "infinite", "stone", "nature", "moss", "weathered", "pores", "wall", "exterior", "rough", "plant", "urban", "city", "industrial", "dry", "fadely", "yellowish")),
+	::anno::thumbnail("./.thumbs/Stone_Pores_Weathered.Fadely_Yellowish_Moss.png"),
+	::anno::author("NVIDIA vMaterials"),
+	::anno::contributor("Maik Rohland"),
+	::anno::contributor("Ruediger Raab")
+]]
+= Stone_Pores_Weathered
+(
+    infinite_tiling: false,
+    stone_diffuse_brightness: 0.f,
+    reflection_roughness: 0.8f,
+    stones_bump_strength: 0.2f,
+    moss_brightness: 1.f,
+    moss_saturation: 0.f,
+    moss_distribution_amount: .69f,
+    moss_height_growth: 1.f,
+    moss_weight: 0.25f,
+    moss_moisture: 1.f,
+    moss_bump_factor: 1.f,
+    texture_translate: float2(0.0f),
+    texture_rotate: 0.0f,
+    texture_scale: float2(1.0f),
+    enable_round_corners: false,
+    radius: 1.5f,
+    across_materials: true,
+    uv_space_index: 0
+);