public ShaderGeneratorContext(GraphicsDevice graphicsDevice = null)
{
this.graphicsDevice = graphicsDevice;
Parameters = new ParameterCollection();
parameterKeyIndices = new Dictionary <ParameterKey, int>();
declaredSamplerStates = new Dictionary <SamplerStateDescription, ObjectParameterKey <SamplerState> >();
currentOverrides = new MaterialOverrides();
}
///// <summary>
///// Gets or sets the scale v.
///// </summary>
///// <value>The scale v.</value>
//[DefaultValue(1.0f)]
//[DataMember(90)]
//public float ScaleV { get; set; }
/// <summary>
/// Implements the multiply operator in order to support correct calculation of overrides for a particular layer.
/// </summary>
/// <param name="left">The left.</param>
/// <param name="right">The right.</param>
/// <returns>The result of the operator.</returns>
public static MaterialOverrides operator *(MaterialOverrides left, MaterialOverrides right)
{
var overrides = new MaterialOverrides {
UVScale = left.UVScale * right.UVScale
};
return(overrides);
}
private void UpdateOverrides()
{
// Update overrides by squashing them using multiplication
currentOverrides = new MaterialOverrides();
foreach (var current in overridesStack)
{
currentOverrides *= current;
}
}
public void PushOverrides(MaterialOverrides overrides)
{
if (overrides == null)
{
throw new ArgumentNullException("overrides");
}
overridesStack.Push(overrides);
UpdateOverrides();
}
public override void GenerateShader(MaterialGeneratorContext context)
{
// Exclude ambient occlusion from uv-scale overrides
var revertOverrides = new MaterialOverrides();
revertOverrides.UVScale = 1.0f / context.CurrentOverrides.UVScale;
context.PushOverrides(revertOverrides);
context.SetStream(OcclusionStream.Stream, AmbientOcclusionMap, MaterialKeys.AmbientOcclusionMap, MaterialKeys.AmbientOcclusionValue, Color.White);
context.PopOverrides();
context.SetStream("matAmbientOcclusionDirectLightingFactor", DirectLightingFactor, null, MaterialKeys.AmbientOcclusionDirectLightingFactorValue);
if (CavityMap != null)
{
context.SetStream(CavityStream.Stream, CavityMap, MaterialKeys.CavityMap, MaterialKeys.CavityValue, Color.White);
context.SetStream("matCavityDiffuse", DiffuseCavity, null, MaterialKeys.CavityDiffuseValue);
context.SetStream("matCavitySpecular", SpecularCavity, null, MaterialKeys.CavitySpecularValue);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="MaterialAttributes"/> class.
/// </summary>
public MaterialAttributes()
{
CullMode = CullMode.Back;
Overrides = new MaterialOverrides();
}
/// <summary>
/// Initializes a new instance of the <see cref="MaterialBlendLayer"/> class.
/// </summary>
public MaterialBlendLayer()
{
Enabled = true;
BlendMap = new ComputeTextureScalar();
Overrides = new MaterialOverrides();
}