private void ClampInputs()
{
// Clamp color inputs
var diffuseMin = Vector4.Zero;
var diffuseMax = Vector4.One;
BasePaintDiffuseMap.ClampFloat4(ref diffuseMin, ref diffuseMax);
MetalFlakesDiffuseMap.ClampFloat4(ref diffuseMin, ref diffuseMax);
// Clamp scalar inputs
BasePaintGlossinessMap.ClampFloat(0, 1);
MetalFlakesGlossinessMap.ClampFloat(0, 1);
ClearCoatGlossinessMap.ClampFloat(0, 1);
MetalFlakesMetalnessMap.ClampFloat(0, 1);
ClearCoatMetalnessMap.ClampFloat(0, 1);
}
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);
}
