예제 #1
0
void FShaderUniformBufferParameter::Bind(const FShaderParameterMap& ParameterMap,const TCHAR* ParameterName,EShaderParameterFlags Flags)
{
	uint16 UnusedBaseIndex = 0;
	uint16 UnusedNumBytes = 0;

#if UE_BUILD_DEBUG
	bInitialized = true;
#endif

	if(!ParameterMap.FindParameterAllocation(ParameterName,BaseIndex,UnusedBaseIndex,UnusedNumBytes))
	{
		bIsBound = false;
		if(Flags == SPF_Mandatory)
		{
			if (!UE_LOG_ACTIVE(LogShaders, Log))
			{
				UE_LOG(LogShaders, Fatal,TEXT("Failure to bind non-optional shader resource parameter %s!  The parameter is either not present in the shader, or the shader compiler optimized it out."),ParameterName);
			}
			else
			{
				// We use a non-Slate message box to avoid problem where we haven't compiled the shaders for Slate.
				FPlatformMisc::MessageBoxExt( EAppMsgType::Ok, *FText::Format(
					NSLOCTEXT("UnrealEd", "Error_FailedToBindShaderParameter", "Failure to bind non-optional shader parameter {0}! The parameter is either not present in the shader, or the shader compiler optimized it out. This will be an assert with LogShaders suppressed!"),
					FText::FromString(ParameterName)).ToString(), TEXT("Warning"));
			}
		}
	}
	else
	{
		bIsBound = true;
	}
}
예제 #2
0
void BuildResourceTableMapping(
	const TMap<FString,FResourceTableEntry>& ResourceTableMap,
	const TMap<FString,uint32>& ResourceTableLayoutHashes,
	TBitArray<>& UsedUniformBufferSlots,
	FShaderParameterMap& ParameterMap,
	FShaderResourceTable& OutSRT)
{
	check(OutSRT.ResourceTableBits == 0);
	check(OutSRT.ResourceTableLayoutHashes.Num() == 0);

	// Build resource table mapping
	int32 MaxBoundResourceTable = -1;
	TArray<uint32> ResourceTableSRVs;
	TArray<uint32> ResourceTableSamplerStates;
	TArray<uint32> ResourceTableUAVs;

	for( auto MapIt = ResourceTableMap.CreateConstIterator(); MapIt; ++MapIt )
	{
		const FString& Name	= MapIt->Key;
		const FResourceTableEntry& Entry = MapIt->Value;

		uint16 BufferIndex, BaseIndex, Size;
		if (ParameterMap.FindParameterAllocation( *Name, BufferIndex, BaseIndex, Size ) )
		{
			ParameterMap.RemoveParameterAllocation(*Name);

			uint16 UniformBufferIndex = INDEX_NONE, UBBaseIndex, UBSize;
			if (ParameterMap.FindParameterAllocation(*Entry.UniformBufferName, UniformBufferIndex, UBBaseIndex, UBSize) == false)
			{
				UniformBufferIndex = UsedUniformBufferSlots.FindAndSetFirstZeroBit();
				ParameterMap.AddParameterAllocation(*Entry.UniformBufferName,UniformBufferIndex,0,0);
			}

			OutSRT.ResourceTableBits |= (1 << UniformBufferIndex);
			MaxBoundResourceTable = FMath::Max<int32>(MaxBoundResourceTable, (int32)UniformBufferIndex);

			while (OutSRT.ResourceTableLayoutHashes.Num() <= MaxBoundResourceTable)
			{
				OutSRT.ResourceTableLayoutHashes.Add(0);
			}
			OutSRT.ResourceTableLayoutHashes[UniformBufferIndex] = ResourceTableLayoutHashes.FindChecked(Entry.UniformBufferName);

			auto ResourceMap = FRHIResourceTableEntry::Create(UniformBufferIndex, Entry.ResourceIndex, BaseIndex);
			switch( Entry.Type )
			{
			case UBMT_TEXTURE:
				OutSRT.TextureMap.Add(ResourceMap);
				break;
			case UBMT_SAMPLER:
				OutSRT.SamplerMap.Add(ResourceMap);
				break;
			case UBMT_SRV:
				OutSRT.ShaderResourceViewMap.Add(ResourceMap);
				break;
			case UBMT_UAV:
				OutSRT.UnorderedAccessViewMap.Add(ResourceMap);
				break;
			default:
				check(0);
			}
		}
	}

	OutSRT.MaxBoundResourceTable = MaxBoundResourceTable;
}