private static void WriteVertexShader(EffectCodeGenerator generator, StitchedFragmentSymbol fragment,
string uniquePassName, Dictionary <string, List <string> > exports)
{
ScriptTextWriter writer = generator.Writer;
writer.WriteLine("// -------- vertex shader {0} --------", fragment.UniqueName);
ShaderCodeBlockNode shader = fragment.FragmentNode.VertexShaders.GetCodeBlock(generator.Context.TargetShaderProfile);
if (shader != null)
{
string shaderCode = StitchedEffectPreProcessor.PreProcessCodeBlock(fragment.UniqueName, shader, exports);
shaderCode = ReplaceOutputCalls(shaderCode, fragment.UniqueName);
WriteShaderCode(generator, fragment, shaderCode, "VERTEXINPUT", "VERTEXOUTPUT", "vs", uniquePassName);
}
else
{
// Need to auto-generate vertex shader. Simply pass through all vertex inputs.
writer.WriteLine("void {0}_{1}_vs({0}_{1}_VERTEXINPUT input, inout {0}_VERTEXOUTPUT output)", uniquePassName, fragment.UniqueName);
writer.WriteLine("{");
writer.Write(GetVertexPassThroughCode(fragment));
writer.WriteLine("}");
}
writer.WriteLine();
writer.WriteLine();
}
public void GenerateCode()
{
// If there are no vertex shaders in any of the fragments, disable vertex shader generation.
// This is useful, for example, in post processing shaders where SpriteBatch is used.
bool generateVertexShader = _stitchedEffect.StitchedFragments.Any(f => f.FragmentNode.VertexShaders.Any());
HeaderCodeGenerator.GenerateAllHeaderCode(this, _stitchedEffect);
ParameterGenerator.GenerateAllParameters(this, _stitchedEffect);
SamplerGenerator.GenerateAllSamplers(this, _stitchedEffect);
if (generateVertexShader)
{
StructGenerator.WriteAllVertexInputStructures(this, _stitchedEffect);
}
StructGenerator.WriteAllPixelInputStructures(this, _stitchedEffect);
if (generateVertexShader)
{
StructGenerator.WriteAllVertexOutputStructures(this, _stitchedEffect);
}
StructGenerator.WriteAllPixelOutputStructs(this, _stitchedEffect);
List <ExportedValue> exportedValues = StitchedEffectPreProcessor.GetExportedValues(_stitchedEffect);
ExportedValueGenerator.GenerateExportDeclarations(this, exportedValues);
if (generateVertexShader)
{
ShaderGenerator.WriteAllVertexShaders(this, _stitchedEffect);
}
ShaderGenerator.WriteAllPixelShaders(this, _stitchedEffect);
TechniqueGenerator.GenerateAllTechniques(this, _stitchedEffect, generateVertexShader);
}
private static void WritePixelShader(EffectCodeGenerator generator, StitchedFragmentSymbol stitchedFragment,
string uniquePassName, Dictionary <string, List <string> > exports)
{
ShaderCodeBlockNode codeBlock = stitchedFragment.FragmentNode.PixelShaders.GetCodeBlock(generator.Context.TargetShaderProfile);
if (codeBlock != null)
{
generator.Writer.WriteLine("// -------- pixel shader {0} --------", stitchedFragment.UniqueName);
string shaderCode = StitchedEffectPreProcessor.PreProcessCodeBlock(stitchedFragment.UniqueName, codeBlock, exports);
shaderCode = ReplaceOutputCalls(shaderCode, stitchedFragment.UniqueName);
WriteShaderCode(generator, stitchedFragment, shaderCode, "PIXELINPUT", "PIXELOUTPUT", "ps", uniquePassName);
generator.Writer.WriteLine();
generator.Writer.WriteLine();
}
}
