private void BlendShadingModel(MaterialBlendLayerContext parent, MaterialBlendLayerPerStageContext pendingPixelLayerContext, MaterialBlendLayerPerStageContext parentPixelLayerContext)
{
var shaderBlendingSource = new ShaderMixinSource();
shaderBlendingSource.Mixins.Add(new ShaderClassSource("MaterialSurfaceShadingBlend"));
parent.SetStreamBlend(MaterialShaderStage.Pixel, parent.BlendMapForShadingModel);
// Add shader source already setup for the parent
foreach (var shaderSource in pendingPixelLayerContext.ShaderSources)
{
shaderBlendingSource.AddCompositionToArray("layers", shaderSource);
}
// Add shader source generated for blending this layer
foreach (var shaderSource in parent.ShadingModels.Generate(this))
{
shaderBlendingSource.AddCompositionToArray("layers", shaderSource);
}
parent.ShadingModels.Clear();
parentPixelLayerContext.ShaderSources.Add(shaderBlendingSource);
pendingPixelLayerContext.Reset();
parent.BlendMapForShadingModel = null;
}
/// <summary>
/// Initializes a new instance of <see cref="MaterialBlendLayerContext"/>.
/// </summary>
/// <param name="context">The material generator context</param>
/// <param name="parentLayerContext">The parent layer context</param>
/// <param name="blendMap">The blend map used for this layer</param>
public MaterialBlendLayerContext(MaterialGeneratorContext context, MaterialBlendLayerContext parentLayerContext, IComputeScalar blendMap)
{
if (context == null) throw new ArgumentNullException(nameof(context));
Context = context;
Parent = parentLayerContext;
BlendMap = blendMap;
Children = new List<MaterialBlendLayerContext>();
ShadingModels = new MaterialShadingModelCollection();
ContextPerStage = new Dictionary<MaterialShaderStage, MaterialBlendLayerPerStageContext>();
foreach (MaterialShaderStage stage in Enum.GetValues(typeof(MaterialShaderStage)))
{
ContextPerStage[stage] = new MaterialBlendLayerPerStageContext();
}
PendingPixelLayerContext = new MaterialBlendLayerPerStageContext();
}
/// <summary>
/// Initializes a new instance of <see cref="MaterialBlendLayerContext"/>.
/// </summary>
/// <param name="context">The material generator context</param>
/// <param name="parentLayerContext">The parent layer context</param>
/// <param name="blendMap">The blend map used for this layer</param>
public MaterialBlendLayerContext(MaterialGeneratorContext context, MaterialBlendLayerContext parentLayerContext, IComputeScalar blendMap)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
Context = context;
Parent = parentLayerContext;
BlendMap = blendMap;
Children = new List <MaterialBlendLayerContext>();
ShadingModels = new MaterialShadingModelCollection();
ContextPerStage = new Dictionary <MaterialShaderStage, MaterialBlendLayerPerStageContext>();
foreach (MaterialShaderStage stage in Enum.GetValues(typeof(MaterialShaderStage)))
{
ContextPerStage[stage] = new MaterialBlendLayerPerStageContext();
}
PendingPixelLayerContext = new MaterialBlendLayerPerStageContext();
}