/// <summary>
/// A fallthrough shader, copies all inputs to outputs (the same name).
/// </summary>
/// <param name="inputPinComponents">Input components that must be provided.</param>
/// <param name="outputPinComponents">Output components of shader.</param>
/// <remarks>
/// All output compononents must have inputs, if too many inputs are provided, they are simply discarded.
/// </remarks>
/// <returns>The ShaderCode matching description.</returns>
public static ShaderCode FallTroughShader(BindingStage stage, PinComponent inputPinComponents, PinComponent outputPinComponents)
{
if ((outputPinComponents & inputPinComponents) != outputPinComponents)
{
throw new ArgumentException("Invalid bindings, some output pins do not have input components.");
}
// TODO:
return(null);
}
/// <summary>
/// Creates ShaderCode using stage.
/// </summary>
/// <param name="stage">The stage.</param>
public ShaderCode(BindingStage dagStage)
{
stage = dagStage;
immutable = false;
input = new InputOperation(this);
if (dagStage == BindingStage.PixelShader)
{
output = new PixelOutputOperation(this);
}
else
{
output = new OutputOperation(this);
}
}
public IShader CompileFromFile(BindingStage stage, String filename, FixedShaderParameters parameters)
{
Driver.IShaderBase b = compiler.Compile(stage, filename);
// We now terminate it.
switch (stage)
{
case BindingStage.VertexShader:
return(new VShader(parameters, (Driver.IVShader)b));
case BindingStage.PixelShader:
return(new PShader(parameters, (Driver.IPShader)b));
case BindingStage.GeometryShader:
default:
throw new NotImplementedException();
}
}
/// <summary>
/// Creates a code generator.
/// </summary>
public CodeGenerator(BindingStage stage)
{
dag = new ShaderCode(stage);
}
/// <summary>
/// Begins description.
/// </summary>
/// <param name="s">The stage.</param>
public void Begin(BindingStage s)
{
counter = 0;
stage = s;
compiler.Begin(stage);
}
