private ShaderBytecode AssembleVertexShader(Module shaderLibrary, ModuleInstance shaderLibraryInstance)
{
var vertexShaderGraph = new FunctionLinkingGraph();
// create input node - parameter name, semantic and size in bytes
var vertexShaderInputNode = vertexShaderGraph.SetInputSignature(CreateInParam("inputPos", "SV_POSITION", 4),
CreateInParam("inputTex", "COLOR", 4));
// create the function call node
var vertexFunctionCallNode = vertexShaderGraph.CallFunction(shaderLibrary, "VertexFunction");
// bind input parameters to the function call
vertexShaderGraph.PassValue(vertexShaderInputNode, 0, vertexFunctionCallNode, 0);
vertexShaderGraph.PassValue(vertexShaderInputNode, 1, vertexFunctionCallNode, 1);
// create the output parameters node
var vertexShaderOutputNode = vertexShaderGraph.SetOutputSignature(CreateOutParam("outputTex", "SV_POSITION", 4),
CreateOutParam("outputNorm", "COLOR", 4));
// bind function call parameters to the output node
vertexShaderGraph.PassValue(vertexFunctionCallNode, 0, vertexShaderOutputNode, 0);
vertexShaderGraph.PassValue(vertexFunctionCallNode, 1, vertexShaderOutputNode, 1);
// create the library instance for the shader
var vertexShaderGraphInstance = vertexShaderGraph.CreateModuleInstance();
var linker = new Linker();
// bind linker to the function library
linker.UseLibrary(shaderLibraryInstance);
// link the shader
return linker.Link(vertexShaderGraphInstance, "main", "vs_5_0", 0);
}
private ShaderBytecode AssemblePixelShader(Module shaderLibrary, ModuleInstance shaderLibraryInstance)
{
var pixelShaderGraph = new FunctionLinkingGraph();
var pixelShaderInputNode = pixelShaderGraph.SetInputSignature(CreateInParam("inputPos", "SV_POSITION", 4, InterpolationMode.Undefined),
CreateInParam("inputTex", "COLOR", 4, InterpolationMode.Undefined));
var colorValueNode = pixelShaderGraph.CallFunction(shaderLibrary, "ColorFunction");
pixelShaderGraph.PassValue(pixelShaderInputNode, 0, colorValueNode, 0);
pixelShaderGraph.PassValue(pixelShaderInputNode, 1, colorValueNode, 1);
// link additional nodes based on configuration
if (_data.EnableInvertColor)
{
var tempNode = pixelShaderGraph.CallFunction(shaderLibrary, "InvertColor");
pixelShaderGraph.PassValue(colorValueNode, tempNode, 0);
colorValueNode = tempNode;
}
if (_data.EnableGrayscale)
{
var tempNode = pixelShaderGraph.CallFunction(shaderLibrary, "Grayscale");
pixelShaderGraph.PassValue(colorValueNode, tempNode, 0);
colorValueNode = tempNode;
}
var pixelShaderOutputNode = pixelShaderGraph.SetOutputSignature(CreateOutParam("outputColor", "SV_TARGET", 4));
pixelShaderGraph.PassValue(colorValueNode, pixelShaderOutputNode, 0);
var pixelShaderGraphInstance = pixelShaderGraph.CreateModuleInstance();
var linker = new Linker();
linker.UseLibrary(shaderLibraryInstance);
return linker.Link(pixelShaderGraphInstance, "main", "ps_5_0", 0);
}