Function PatchShader

shadercompiler/EffectCompilerDX11.cpp:236–468

}

static PatchAction PatchShader( InputStageType shaderStage, ASTNode* callNode, ParserState& state, CodeStream& os, std::string& entryPointName )
{
	ZoneScoped;

	// 1. wrap uniforms
	// 2. fix VPOS

	bool wrapUniforms = false;
	bool fixVPOS = false;
	bool fixVPOSType = false;

	Symbol* entryPointSymbol = callNode->GetSymbol();

	if( entryPointSymbol == nullptr || entryPointSymbol->definition == nullptr )
	{
		return PATCH_ERROR;
	}

	ASTNode* functionHeader = entryPointSymbol->definition->GetChildOrNull( 0 );
	if( functionHeader == nullptr )
	{
		return PATCH_ERROR;
	}

	std::vector<Symbol*> targetPath;
	std::vector<Symbol*> outPositionPath;
	std::vector<Symbol*> vfacePath;

	if( shaderStage == VERTEX_STAGE )
	{
		const char* position[] = { "position", "sv_position", nullptr };
		FindOutputBySemantics( functionHeader, position, &outPositionPath );
	}


	// check for uniform parameters
	if( callNode->GetChildrenCount() )
	{
		unsigned count = 0;
		for( unsigned i = 0; i < functionHeader->GetChildrenCount(); ++i )
		{
			if( IsUniformInputArgument( functionHeader->GetChild( i ) ) )
			{
				++count;
			}
		}
		if( count != callNode->GetChildrenCount() )
		{
			state.ShowMessage( callNode->GetLocation(), EC_NO_OVERRIDE, ToString( functionHeader->GetToken()->stringValue ).c_str(), "" );
			return PATCH_ERROR;
		}
		wrapUniforms = true;
	}

	// find VPOS+POSITION parameters
	std::vector<Symbol*> positionPath;
	std::vector<Symbol*> vposPath;
	const char* vpos[] = { "vpos", nullptr };