// TODO Quantify/clean all the functions
private void AddBaseDiffuse(MaterialGeneratorContext context)
{
var computeColorDiffuse = BasePaintDiffuseMap.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.DiffuseMap, MaterialKeys.DiffuseValue, Color.White));
var mixinBaseDiffuse = new ShaderMixinSource();
mixinBaseDiffuse.Mixins.Add(new ShaderClassSource("MaterialSurfaceDiffuse"));
mixinBaseDiffuse.AddComposition("diffuseMap", computeColorDiffuse);
context.UseStream(MaterialShaderStage.Pixel, MaterialDiffuseMapFeature.DiffuseStream.Stream);
context.UseStream(MaterialShaderStage.Pixel, MaterialDiffuseMapFeature.ColorBaseStream.Stream);
context.AddShaderSource(MaterialShaderStage.Pixel, mixinBaseDiffuse);
}
public override void GenerateShader(MaterialGeneratorContext context)
{
if (DiffuseMap != null)
{
Vector4 diffuseMin = Vector4.Zero;
Vector4 diffuseMax = Vector4.One;
DiffuseMap.ClampFloat4(ref diffuseMin, ref diffuseMax);
var computeColorSource = DiffuseMap.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.DiffuseMap, MaterialKeys.DiffuseValue, Color.White));
var mixin = new ShaderMixinSource();
mixin.Mixins.Add(new ShaderClassSource("MaterialSurfaceDiffuse"));
mixin.AddComposition("diffuseMap", computeColorSource);
context.UseStream(MaterialShaderStage.Pixel, DiffuseStream.Stream);
context.UseStream(MaterialShaderStage.Pixel, ColorBaseStream.Stream);
context.AddShaderSource(MaterialShaderStage.Pixel, mixin);
}
}
private void AddClearCoatGlossinessMap(MaterialGeneratorContext context)
{
// Glossiness Feature
context.UseStream(MaterialShaderStage.Pixel, "matGlossiness");
var clearCoatGlossinessComputeColorMap = ClearCoatGlossinessMap.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.GlossinessMap, MaterialKeys.GlossinessValue));
var mixinGlossiness = new ShaderMixinSource();
mixinGlossiness.Mixins.Add(new ShaderClassSource("MaterialSurfaceGlossinessMap", ClearCoatGlossinessInvert));
mixinGlossiness.AddComposition("glossinessMap", clearCoatGlossinessComputeColorMap);
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);
}
private void AddClearCoatMetalnessMap(MaterialGeneratorContext context)
{
// Metalness Feature
var clearCoatMetalness = ClearCoatMetalnessMap.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.MetalnessMap, MaterialKeys.MetalnessValue));
var mixin = new ShaderMixinSource();
mixin.Mixins.Add(new ShaderClassSource("MaterialSurfaceMetalness"));
mixin.AddComposition("metalnessMap", clearCoatMetalness);
context.UseStream(MaterialShaderStage.Pixel, "matSpecular");
context.AddShaderSource(MaterialShaderStage.Pixel, mixin);
}
public override void GenerateShader(MaterialGeneratorContext context)
{
if (GlossinessMap != null)
{
GlossinessMap.ClampFloat(0, 1);
context.UseStream(MaterialShaderStage.Pixel, GlossinessStream.Stream);
var computeColorSource = GlossinessMap.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.GlossinessMap, MaterialKeys.GlossinessValue));
var mixin = new ShaderMixinSource();
mixin.Mixins.Add(new ShaderClassSource("MaterialSurfaceGlossinessMap", Invert));
mixin.AddComposition("glossinessMap", computeColorSource);
context.AddShaderSource(MaterialShaderStage.Pixel, mixin);
}
}
public override void GenerateShader(MaterialGeneratorContext context)
{
if (MetalnessMap != null)
{
MetalnessMap.ClampFloat(0, 1);
var computeColorSource = MetalnessMap.GenerateShaderSource(context, new MaterialComputeColorKeys(MaterialKeys.MetalnessMap, MaterialKeys.MetalnessValue));
var mixin = new ShaderMixinSource();
mixin.Mixins.Add(new ShaderClassSource("MaterialSurfaceMetalness"));
mixin.AddComposition("metalnessMap", computeColorSource);
context.UseStream(MaterialShaderStage.Pixel, "matSpecular");
context.AddShaderSource(MaterialShaderStage.Pixel, mixin);
}
}
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);
}