mdl 1.4;
import ::anno::*;

export const string TRANSFORM_NONE = "NONE";
export const string TRANSFORM_UNORM_VECTOR = "UNORM_VECTOR";

export const string FORMAT_RGBA8_UNORM = "RGBA8_UNORM";
export const string FORMAT_R8_UNORM = "R8_UNORM";
export const string FORMAT_RGBA16_SFLOAT = "RGBA16_SFLOAT";

export const string BLEND_MODE_OPACITY = "opacity_blend";
export const string BLEND_MODE_REPLACE = "replace";

// This annotation is used to mark a material as target material for baking.
// It is that is detected by the MDL SDK and neuray.
export annotation target_material_model();

export annotation target_material_rendering(
    string rendering_material_override = "" // if set, the baked material will be rendering using this material, 
                                            // otherwise the target itself is used
);

export annotation target_baked_argument(
    // the name of the baked texture parameter in the rendering material
    string baked_name,

    // the name of the constant parameter in the rendering material in case baking was not necessary
    string constant_name = "",

    // texture format to bake to
    string format = "",

    // transformations, like encoding normals into [0,1] range
    string transform = TRANSFORM_NONE,

    // blending, e.g., based on alpha or replace
    string blend_mode = BLEND_MODE_OPACITY
);