public override void GenerateShader(MaterialGeneratorContext context)
{
var shaderSource = new ShaderMixinSource();
shaderSource.Mixins.Add(new ShaderClassSource("MaterialSurfaceSubsurfaceScatteringShading"));
TranslucencyMap.ClampFloat(0.0f, 1.0f);
context.SetStream(ScatteringStrengthStream.Stream, TranslucencyMap, MaterialKeys.ScatteringStrengthMap, MaterialKeys.ScatteringStrengthValue);
// TODO: Generate a hash with the scattering kernel and scattering width!
var parameters = context.MaterialPass.Parameters;
parameters.Set(Stride.Rendering.Materials.MaterialSurfaceSubsurfaceScatteringShadingKeys.Translucency, Translucency);
parameters.Set(Stride.Rendering.Materials.MaterialSurfaceSubsurfaceScatteringShadingKeys.ScatteringWidth, ScatteringWidth);
// Generate and set the scattering profile:
shaderSource.AddComposition("scatteringProfileFunction", ProfileFunction.Generate(context));
// Generate and set the scattering kernel:
Vector4[] scatteringKernel = KernelFunction.Generate();
parameters.Set(Stride.Rendering.Materials.MaterialSurfaceSubsurfaceScatteringShadingKeys.ScatteringKernel, scatteringKernel);
/*
* {
* Game game = Services.GetSafeServiceAs<Game>();
* SubsurfaceScatteringSettings settings = game.Settings.Configurations.Get<SubsurfaceScatteringSettings>();
* //SubsurfaceScatteringSettings settings = services.GetSafeServiceAs<SubsurfaceScatteringSettings>(); // TODO: Query the settings like this once the system is ready.
* }
*/
var shaderBuilder = context.AddShading(this);
shaderBuilder.LightDependentSurface = shaderSource;
}
public override int GetHashCode()
{
unchecked
{
var hashCode = ScatteringWidth.GetHashCode();
hashCode = (hashCode * 397) ^ Translucency.GetHashCode();
hashCode = (hashCode * 397) ^ TranslucencyMap.GetHashCode();
hashCode = (hashCode * 397) ^ ProfileFunction.GetHashCode();
hashCode = (hashCode * 397) ^ KernelFunction.GetHashCode();
return(hashCode);
}
}
protected bool Equals(MaterialSubsurfaceScatteringFeature other)
{
return(ScatteringWidth.Equals(other.ScatteringWidth) && Translucency.Equals(other.Translucency) && TranslucencyMap.Equals(other.TranslucencyMap) && ProfileFunction.Equals(other.ProfileFunction) && KernelFunction.Equals(other.KernelFunction));
}
