Function GetStageDataForNode

shadercompiler/EffectCompilerMetal.cpp:3876–4150

}

bool GetStageDataForNode( ParserState& state, StageData& stage, ASTNode* functionHeader, std::map<StringReference, ParameterAnnotation>& annotations )
{
	for( size_t i = 0, n = functionHeader->GetChildrenCount(); i < n; ++i )
	{
		ASTNode* child = functionHeader->GetChild( i );
		assert( child );

		Symbol* symbol = child->GetSymbol();
		assert( symbol );

		const Type& type = child->GetType();

		assert( !symbol->registerSpecifier.empty() );
		const RegisterSpecifier& reg = symbol->registerSpecifier.cbegin()->second;

		switch( reg.registerType )
		{
		case MetalRegister::CBuffer: {
			stage.registerInputs.push_back( { RT_CONSTANT_BUFFER, (uint32_t)reg.registerNumber, 1, 0 } );
		}
			continue;
		default:
			break;
		}

		if( type.arrayDimensions > 0 )
		{
			assert( reg.registerType == MetalRegister::SRV || reg.registerType == MetalRegister::UAV );

			if( symbol->used )
			{
				if( reg.registerType == MetalRegister::SRV )
				{
					if( type.IsSampler() )
					{
						stage.registerInputs.push_back( { RT_SAMPLER, (uint32_t)reg.registerNumber, (uint32_t)type.arraySizes[0], 0 } );

						Sampler sampler = {};

						auto globalSamplerSymbol = state.GetSymbolTable().LookupGlobal( ToString( symbol->name ).c_str() );
						if( !GetSamplerState( state, globalSamplerSymbol->definition, sampler ) )
						{
							return false;
						}

						if( sampler.addressU == D3D11_TEXTURE_ADDRESS_BORDER || sampler.addressV == D3D11_TEXTURE_ADDRESS_BORDER || sampler.addressW == D3D11_TEXTURE_ADDRESS_BORDER )
						{
							auto& c = sampler.borderColor;
							if( ( c.x != 0 || c.y != 0 || c.z != 0 || c.w != 0 ) &&
								( c.x != 0 || c.y != 0 || c.z != 0 || c.w != 1 ) &&
								( c.x != 1 || c.y != 1 || c.z != 1 || c.w != 1 ) )
							{
								state.ShowMessage( globalSamplerSymbol->definition->GetLocation(), EC_CUSTOM_ERROR, "sampler border color is not one of colors supported by Metal" );
								return false;
							}
						}

						sampler.name = g_stringTable.AddString( symbol->name );