private void AddMetalFlakesGlossiness(MaterialGeneratorContext context)
{
var surfaceToEyeDistance = LODDistance.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.GlossinessMap, MaterialKeys.GlossinessValue, Color.White));
// Metal Flakes Glossiness Feature
context.UseStream(MaterialShaderStage.Pixel, "matGlossiness");
var baseGlossinessComputeColorMap = BasePaintGlossinessMap.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.GlossinessMap, MaterialKeys.GlossinessValue));
var mixinGlossiness = new ShaderMixinSource();
// Computes glossiness factor for the metal flakes layer (based on the eye to surface distance and the base glossiness value)
mixinGlossiness.Mixins.Add(new ShaderClassSource("MaterialSurfaceGlossinessMapMetalFlakes", BasePaintGlossinessInvert));
mixinGlossiness.AddComposition("glossinessMap", baseGlossinessComputeColorMap);
mixinGlossiness.AddComposition("surfaceToEyeDistanceFactor", surfaceToEyeDistance);
context.AddShaderSource(MaterialShaderStage.Pixel, mixinGlossiness);
}
private void AddMetalFlakesDiffuse(MaterialGeneratorContext context)
{
var surfaceToEyeDistance = LODDistance.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.GlossinessMap, MaterialKeys.GlossinessValue, Color.White));
// Diffuse Feature (interpolated by the 'regular' diffuse map)
var metalFlakesComputeColorSource = MetalFlakesDiffuseMap.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.DiffuseMap, MaterialKeys.DiffuseValue, Color.White));
var mixinDiffuse = new ShaderMixinSource();
// Diffuse uses a custom shader (to perform the interpolation)
mixinDiffuse.Mixins.Add(new ShaderClassSource("MaterialSurfaceDiffuseMetalFlakes"));
mixinDiffuse.AddComposition("diffuseMap", metalFlakesComputeColorSource);
mixinDiffuse.AddComposition("surfaceToEyeDistanceFactor", surfaceToEyeDistance);
context.UseStream(MaterialShaderStage.Pixel, MaterialDiffuseMapFeature.DiffuseStream.Stream);
context.UseStream(MaterialShaderStage.Pixel, MaterialDiffuseMapFeature.ColorBaseStream.Stream);
context.AddShaderSource(MaterialShaderStage.Pixel, mixinDiffuse);
}