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68f340a63c
#rb none KNOWN BROKEN DO NOT SYNC #lockdown rolando.caloca [CL 4827063 by Marcus Wassmer in Dev-Rendering branch]
1955 lines
47 KiB
C++
1955 lines
47 KiB
C++
// Copyright 1998-2019 Epic Games, Inc. All Rights Reserved.
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#include "ShaderCompilerCommon.h"
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#include "Misc/Paths.h"
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#include "Modules/ModuleManager.h"
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#include "HlslccDefinitions.h"
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#include "HAL/FileManager.h"
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IMPLEMENT_MODULE(FDefaultModuleImpl, ShaderCompilerCommon);
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int16 GetNumUniformBuffersUsed(const FShaderCompilerResourceTable& InSRT)
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{
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auto CountLambda = [&](const TArray<uint32>& In)
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{
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int16 LastIndex = -1;
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for (int32 i = 0; i < In.Num(); ++i)
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{
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auto BufferIndex = FRHIResourceTableEntry::GetUniformBufferIndex(In[i]);
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if (BufferIndex != static_cast<uint16>(FRHIResourceTableEntry::GetEndOfStreamToken()) )
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{
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LastIndex = FMath::Max(LastIndex, (int16)BufferIndex);
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}
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}
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return LastIndex + 1;
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};
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int16 Num = CountLambda(InSRT.SamplerMap);
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Num = FMath::Max(Num, (int16)CountLambda(InSRT.ShaderResourceViewMap));
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Num = FMath::Max(Num, (int16)CountLambda(InSRT.TextureMap));
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Num = FMath::Max(Num, (int16)CountLambda(InSRT.UnorderedAccessViewMap));
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return Num;
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}
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void BuildResourceTableTokenStream(const TArray<uint32>& InResourceMap, int32 MaxBoundResourceTable, TArray<uint32>& OutTokenStream, bool bGenerateEmptyTokenStreamIfNoResources)
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{
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if (bGenerateEmptyTokenStreamIfNoResources)
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{
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if (InResourceMap.Num() == 0)
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{
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return;
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}
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}
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// First we sort the resource map.
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TArray<uint32> SortedResourceMap = InResourceMap;
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SortedResourceMap.Sort();
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// The token stream begins with a table that contains offsets per bound uniform buffer.
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// This offset provides the start of the token stream.
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OutTokenStream.AddZeroed(MaxBoundResourceTable+1);
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auto LastBufferIndex = FRHIResourceTableEntry::GetEndOfStreamToken();
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for (int32 i = 0; i < SortedResourceMap.Num(); ++i)
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{
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auto BufferIndex = FRHIResourceTableEntry::GetUniformBufferIndex(SortedResourceMap[i]);
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if (BufferIndex != LastBufferIndex)
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{
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// Store the offset for resources from this buffer.
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OutTokenStream[BufferIndex] = OutTokenStream.Num();
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LastBufferIndex = BufferIndex;
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}
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OutTokenStream.Add(SortedResourceMap[i]);
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}
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// Add a token to mark the end of the stream. Not needed if there are no bound resources.
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if (OutTokenStream.Num())
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{
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OutTokenStream.Add(FRHIResourceTableEntry::GetEndOfStreamToken());
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}
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}
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bool BuildResourceTableMapping(
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const TMap<FString,FResourceTableEntry>& ResourceTableMap,
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const TMap<FString,uint32>& ResourceTableLayoutHashes,
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TBitArray<>& UsedUniformBufferSlots,
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FShaderParameterMap& ParameterMap,
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FShaderCompilerResourceTable& OutSRT)
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{
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check(OutSRT.ResourceTableBits == 0);
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check(OutSRT.ResourceTableLayoutHashes.Num() == 0);
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// Build resource table mapping
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int32 MaxBoundResourceTable = -1;
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TArray<uint32> ResourceTableSRVs;
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TArray<uint32> ResourceTableSamplerStates;
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TArray<uint32> ResourceTableUAVs;
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// Go through ALL the members of ALL the UB resources
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for( auto MapIt = ResourceTableMap.CreateConstIterator(); MapIt; ++MapIt )
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{
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const FString& Name = MapIt->Key;
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const FResourceTableEntry& Entry = MapIt->Value;
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uint16 BufferIndex, BaseIndex, Size;
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// If the shaders uses this member (eg View_PerlinNoise3DTexture)...
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if (ParameterMap.FindParameterAllocation( *Name, BufferIndex, BaseIndex, Size ) )
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{
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ParameterMap.RemoveParameterAllocation(*Name);
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uint16 UniformBufferIndex = INDEX_NONE;
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uint16 UBBaseIndex, UBSize;
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// Add the UB itself as a parameter if not there
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if (!ParameterMap.FindParameterAllocation(*Entry.UniformBufferName, UniformBufferIndex, UBBaseIndex, UBSize))
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{
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UniformBufferIndex = UsedUniformBufferSlots.FindAndSetFirstZeroBit();
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ParameterMap.AddParameterAllocation(*Entry.UniformBufferName,UniformBufferIndex,0,0,EShaderParameterType::UniformBuffer);
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}
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// Mark used UB index
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if (UniformBufferIndex >= sizeof(OutSRT.ResourceTableBits) * 8)
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{
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return false;
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}
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OutSRT.ResourceTableBits |= (1 << UniformBufferIndex);
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// How many resource tables max we'll use, and fill it with zeroes
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MaxBoundResourceTable = FMath::Max<int32>(MaxBoundResourceTable, (int32)UniformBufferIndex);
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while (OutSRT.ResourceTableLayoutHashes.Num() <= MaxBoundResourceTable)
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{
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OutSRT.ResourceTableLayoutHashes.Add(0);
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}
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// Save the current UB's layout hash
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OutSRT.ResourceTableLayoutHashes[UniformBufferIndex] = ResourceTableLayoutHashes.FindChecked(Entry.UniformBufferName);
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auto ResourceMap = FRHIResourceTableEntry::Create(UniformBufferIndex, Entry.ResourceIndex, BaseIndex);
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switch( Entry.Type )
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{
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case UBMT_TEXTURE:
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case UBMT_RDG_TEXTURE:
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OutSRT.TextureMap.Add(ResourceMap);
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break;
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case UBMT_SAMPLER:
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OutSRT.SamplerMap.Add(ResourceMap);
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break;
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case UBMT_SRV:
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case UBMT_RDG_TEXTURE_SRV:
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case UBMT_RDG_BUFFER_SRV:
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OutSRT.ShaderResourceViewMap.Add(ResourceMap);
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break;
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case UBMT_RDG_TEXTURE_UAV:
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case UBMT_RDG_BUFFER_UAV:
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OutSRT.UnorderedAccessViewMap.Add(ResourceMap);
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break;
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default:
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return false;
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}
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}
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}
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OutSRT.MaxBoundResourceTable = MaxBoundResourceTable;
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return true;
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}
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const TCHAR* FindNextWhitespace(const TCHAR* StringPtr)
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{
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while (*StringPtr && !FChar::IsWhitespace(*StringPtr))
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{
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StringPtr++;
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}
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if (*StringPtr && FChar::IsWhitespace(*StringPtr))
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{
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return StringPtr;
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}
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else
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{
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return nullptr;
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}
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}
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const TCHAR* FindNextNonWhitespace(const TCHAR* StringPtr)
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{
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bool bFoundWhitespace = false;
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while (*StringPtr && (FChar::IsWhitespace(*StringPtr) || !bFoundWhitespace))
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{
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bFoundWhitespace = true;
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StringPtr++;
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}
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if (bFoundWhitespace && *StringPtr && !FChar::IsWhitespace(*StringPtr))
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{
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return StringPtr;
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}
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else
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{
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return nullptr;
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}
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}
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const TCHAR* FindMatchingClosingBrace(const TCHAR* OpeningBracePtr)
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{
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const TCHAR* SearchPtr = OpeningBracePtr;
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int32 Depth = 0;
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while (*SearchPtr)
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{
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if (*SearchPtr == '{')
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{
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Depth++;
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}
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else if (*SearchPtr == '}')
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{
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if (Depth == 0)
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{
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return SearchPtr;
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}
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Depth--;
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}
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SearchPtr++;
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}
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return nullptr;
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}
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// See MSDN HLSL 'Symbol Name Restrictions' doc
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inline bool IsValidHLSLIdentifierCharacter(TCHAR Char)
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{
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return (Char >= 'a' && Char <= 'z') ||
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(Char >= 'A' && Char <= 'Z') ||
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(Char >= '0' && Char <= '9') ||
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Char == '_';
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}
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void ParseHLSLTypeName(const TCHAR* SearchString, const TCHAR*& TypeNameStartPtr, const TCHAR*& TypeNameEndPtr)
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{
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TypeNameStartPtr = FindNextNonWhitespace(SearchString);
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check(TypeNameStartPtr);
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TypeNameEndPtr = TypeNameStartPtr;
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int32 Depth = 0;
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const TCHAR* NextWhitespace = FindNextWhitespace(TypeNameStartPtr);
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const TCHAR* PotentialExtraTypeInfoPtr = NextWhitespace ? FindNextNonWhitespace(NextWhitespace) : nullptr;
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// Find terminating whitespace, but skip over trailing ' < float4 >'
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while (*TypeNameEndPtr)
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{
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if (*TypeNameEndPtr == '<')
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{
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Depth++;
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}
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else if (*TypeNameEndPtr == '>')
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{
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Depth--;
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}
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else if (Depth == 0
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&& FChar::IsWhitespace(*TypeNameEndPtr)
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// If we found a '<', we must not accept any whitespace before it
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&& (!PotentialExtraTypeInfoPtr || *PotentialExtraTypeInfoPtr != '<' || TypeNameEndPtr > PotentialExtraTypeInfoPtr))
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{
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break;
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}
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TypeNameEndPtr++;
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}
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check(TypeNameEndPtr);
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}
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const TCHAR* ParseHLSLSymbolName(const TCHAR* SearchString, FString& SymboName)
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{
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const TCHAR* SymbolNameStartPtr = FindNextNonWhitespace(SearchString);
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check(SymbolNameStartPtr);
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const TCHAR* SymbolNameEndPtr = SymbolNameStartPtr;
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while (*SymbolNameEndPtr && IsValidHLSLIdentifierCharacter(*SymbolNameEndPtr))
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{
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SymbolNameEndPtr++;
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}
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SymboName = FString(SymbolNameEndPtr - SymbolNameStartPtr, SymbolNameStartPtr);
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return SymbolNameEndPtr;
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}
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class FUniformBufferMemberInfo
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{
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public:
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// eg View.WorldToClip
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FString NameAsStructMember;
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// eg View_WorldToClip
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FString GlobalName;
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};
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const TCHAR* ParseStructRecursive(
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const TCHAR* StructStartPtr,
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FString& UniformBufferName,
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int32 StructDepth,
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const FString& StructNamePrefix,
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const FString& GlobalNamePrefix,
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TMap<FString, TArray<FUniformBufferMemberInfo>>& UniformBufferNameToMembers)
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{
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const TCHAR* OpeningBracePtr = FCString::Strstr(StructStartPtr, TEXT("{"));
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check(OpeningBracePtr);
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const TCHAR* ClosingBracePtr = FindMatchingClosingBrace(OpeningBracePtr + 1);
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check(ClosingBracePtr);
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FString StructName;
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const TCHAR* StructNameEndPtr = ParseHLSLSymbolName(ClosingBracePtr + 1, StructName);
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check(StructName.Len() > 0);
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FString NestedStructNamePrefix = StructNamePrefix + StructName + TEXT(".");
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FString NestedGlobalNamePrefix = GlobalNamePrefix + StructName + TEXT("_");
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if (StructDepth == 0)
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{
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UniformBufferName = StructName;
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}
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const TCHAR* LastMemberSemicolon = ClosingBracePtr;
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// Search backward to find the last member semicolon so we know when to stop parsing members
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while (LastMemberSemicolon > OpeningBracePtr && *LastMemberSemicolon != ';')
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{
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LastMemberSemicolon--;
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}
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const TCHAR* MemberSearchPtr = OpeningBracePtr + 1;
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do
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{
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const TCHAR* MemberTypeStartPtr = nullptr;
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const TCHAR* MemberTypeEndPtr = nullptr;
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ParseHLSLTypeName(MemberSearchPtr, MemberTypeStartPtr, MemberTypeEndPtr);
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FString MemberTypeName(MemberTypeEndPtr - MemberTypeStartPtr, MemberTypeStartPtr);
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if (FCString::Strcmp(*MemberTypeName, TEXT("struct")) == 0)
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{
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MemberSearchPtr = ParseStructRecursive(MemberTypeStartPtr, UniformBufferName, StructDepth + 1, NestedStructNamePrefix, NestedGlobalNamePrefix, UniformBufferNameToMembers);
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}
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else
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{
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FString MemberName;
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const TCHAR* SymbolEndPtr = ParseHLSLSymbolName(MemberTypeEndPtr, MemberName);
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check(MemberName.Len() > 0);
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MemberSearchPtr = SymbolEndPtr;
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// Skip over trailing tokens '[1];'
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while (*MemberSearchPtr && *MemberSearchPtr != ';')
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{
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MemberSearchPtr++;
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}
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// Add this member to the map
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TArray<FUniformBufferMemberInfo>& UniformBufferMembers = UniformBufferNameToMembers.FindOrAdd(UniformBufferName);
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FUniformBufferMemberInfo NewMemberInfo;
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NewMemberInfo.NameAsStructMember = NestedStructNamePrefix + MemberName;
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NewMemberInfo.GlobalName = NestedGlobalNamePrefix + MemberName;
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UniformBufferMembers.Add(MoveTemp(NewMemberInfo));
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}
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}
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while (MemberSearchPtr < LastMemberSemicolon);
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const TCHAR* StructEndPtr = StructNameEndPtr;
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// Skip over trailing tokens '[1];'
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while (*StructEndPtr && *StructEndPtr != ';')
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{
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StructEndPtr++;
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}
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return StructEndPtr;
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}
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bool MatchStructMemberName(const FString& SymbolName, const TCHAR* SearchPtr, const FString& PreprocessedShaderSource)
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{
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// Only match whole symbol
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if (IsValidHLSLIdentifierCharacter(*(SearchPtr - 1)) || *(SearchPtr - 1) == '.')
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{
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return false;
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}
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for (int32 i = 0; i < SymbolName.Len(); i++)
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{
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if (*SearchPtr != SymbolName[i])
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{
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return false;
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}
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SearchPtr++;
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if (i < SymbolName.Len() - 1)
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{
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// Skip whitespace within the struct member reference before the end
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// eg 'View. ViewToClip'
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while (FChar::IsWhitespace(*SearchPtr))
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{
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SearchPtr++;
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}
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}
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}
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// Only match whole symbol
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if (IsValidHLSLIdentifierCharacter(*SearchPtr))
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{
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return false;
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}
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return true;
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}
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// Searches string SearchPtr for 'SearchString.' or 'SearchString .' and returns a pointer to the first character of the match.
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TCHAR* FindNextUniformBufferReference(TCHAR* SearchPtr, const TCHAR* SearchString, uint32 SearchStringLength)
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{
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TCHAR* FoundPtr = FCString::Strstr(SearchPtr, SearchString);
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while(FoundPtr)
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{
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if (FoundPtr == nullptr)
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{
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return nullptr;
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}
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else if (FoundPtr[SearchStringLength] == '.' || (FoundPtr[SearchStringLength] == ' ' && FoundPtr[SearchStringLength+1] == '.'))
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{
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return FoundPtr;
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}
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FoundPtr = FCString::Strstr(FoundPtr + SearchStringLength, SearchString);
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}
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return nullptr;
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}
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void MoveShaderParametersToRootConstantBuffer(const FShaderCompilerInput& CompilerInput, FString& PreprocessedShaderSource)
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{
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check(CompilerInput.RootParameterBindings.Num());
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TMap<FString, FString> ShaderParameterTypes;
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ShaderParameterTypes.Reserve(CompilerInput.RootParameterBindings.Num());
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// Prepare the set of parameter to look for.
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for (const auto& Member : CompilerInput.RootParameterBindings)
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{
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ShaderParameterTypes.Add(Member.Name, FString());
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}
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// Browse the code for global shader parameter, Save their type and erase them white spaces.
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{
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int32 TypeStartPos = -1;
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int32 TypeEndPos = -1;
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int32 NameStartPos = -1;
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int32 NameEndPos = -1;
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int32 ScopeIndent = 0;
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bool bGoToNextSemicolon = false;
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bool bGoToNextLine = false;
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for (int32 Cursor = 0; Cursor < PreprocessedShaderSource.Len(); Cursor++)
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{
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TCHAR Char = PreprocessedShaderSource[Cursor];
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const TCHAR* UpComing = (*PreprocessedShaderSource) + Cursor;
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// Go to the next line if this is a preprocessor macro.
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if (bGoToNextLine)
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{
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if (Char == '\n')
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{
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bGoToNextLine = false;
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}
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continue;
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}
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else if (Char == '#')
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{
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bGoToNextLine = true;
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continue;
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}
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// If within a scope, just carry on until outside the scope.
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if (ScopeIndent > 0 || Char == '{')
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{
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if (Char == '{')
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{
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ScopeIndent++;
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}
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else if (Char == '}')
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{
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ScopeIndent--;
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if (ScopeIndent == 0)
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{
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TypeStartPos = -1;
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TypeEndPos = -1;
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NameStartPos = -1;
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NameEndPos = -1;
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bGoToNextSemicolon = false;
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}
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}
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continue;
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}
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// If need to go to next global semicolon and reach it. Resume browsing.
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if (bGoToNextSemicolon)
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{
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if (Char == ';')
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{
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bGoToNextSemicolon = false;
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}
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continue;
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}
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// Found something interesting...
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if ((Char >= 'a' && Char <= 'z') ||
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(Char >= 'A' && Char <= 'Z') ||
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(Char >= '0' && Char <= '9') ||
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Char == '<' || Char == '>' || Char == '_')
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{
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if (TypeStartPos == -1)
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{
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TypeStartPos = Cursor;
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}
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else if (TypeEndPos != -1 && NameStartPos == -1)
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{
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NameStartPos = Cursor;
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}
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else if (NameEndPos != -1)
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{
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TypeStartPos = -1;
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TypeEndPos = -1;
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NameStartPos = -1;
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NameEndPos = -1;
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bGoToNextSemicolon = true;
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continue;
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}
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continue;
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}
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// If this is white space, just carry on.
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if (Char == ' ' || Char == '\t' || Char == '\r' || Char == '\n')
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{
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if (TypeStartPos != -1 && TypeEndPos == -1)
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{
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// Just finished browsing what might be a type.
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TypeEndPos = Cursor - 1;
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}
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else if (NameStartPos != -1 && NameEndPos == -1)
|
|
{
|
|
// Just finished browsing what might be shader parameter name.
|
|
NameEndPos = Cursor - 1;
|
|
}
|
|
continue;
|
|
}
|
|
else if (Char == ';')
|
|
{
|
|
if (NameStartPos != -1 && NameEndPos == -1)
|
|
{
|
|
// Just finished browsing what is a shader parameter name.
|
|
NameEndPos = Cursor - 1;
|
|
}
|
|
else if (NameEndPos != -1)
|
|
{
|
|
// Greate we found something, so fall through.
|
|
}
|
|
else
|
|
{
|
|
// No idea what it was, reset...
|
|
TypeStartPos = -1;
|
|
TypeEndPos = -1;
|
|
NameStartPos = -1;
|
|
NameEndPos = -1;
|
|
continue;
|
|
}
|
|
}
|
|
else if (Char == ':' && NameStartPos != -1)
|
|
{
|
|
// Just finished browsing what might be shader parameter name.
|
|
if (NameEndPos != -1)
|
|
{
|
|
NameEndPos = Cursor - 1;
|
|
}
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
// No idea what it was, reset and go to next semicolon...
|
|
TypeStartPos = -1;
|
|
TypeEndPos = -1;
|
|
NameStartPos = -1;
|
|
NameEndPos = -1;
|
|
bGoToNextSemicolon = true;
|
|
continue;
|
|
}
|
|
|
|
check(Char == ';');
|
|
|
|
// A shader parameter has been found.
|
|
{
|
|
FString Type = PreprocessedShaderSource.Mid(TypeStartPos, TypeEndPos - TypeStartPos + 1);
|
|
FString Name = PreprocessedShaderSource.Mid(NameStartPos, NameEndPos - NameStartPos + 1);
|
|
|
|
if (ShaderParameterTypes.Contains(Name))
|
|
{
|
|
ensureMsgf(ShaderParameterTypes.FindChecked(Name).IsEmpty(), TEXT("Looks %s like shader parameter was duplicated."), *Name);
|
|
ShaderParameterTypes[Name] = Type;
|
|
|
|
// Erases this shader parameter conserving the same line numbers.
|
|
for (int32 j = TypeStartPos; j <= Cursor; j++)
|
|
{
|
|
if (PreprocessedShaderSource[j] != '\r' && PreprocessedShaderSource[j] != '\n')
|
|
PreprocessedShaderSource[j] = ' ';
|
|
}
|
|
}
|
|
|
|
// And reset.
|
|
TypeStartPos = -1;
|
|
TypeEndPos = -1;
|
|
NameStartPos = -1;
|
|
NameEndPos = -1;
|
|
bGoToNextSemicolon = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Generate the root cbuffer content.
|
|
FString RootCBufferContent;
|
|
for (const auto& Member : CompilerInput.RootParameterBindings)
|
|
{
|
|
const FString& Type = ShaderParameterTypes[Member.Name];
|
|
if (Type.IsEmpty())
|
|
{
|
|
continue;
|
|
}
|
|
|
|
FString HLSLOffset;
|
|
{
|
|
int32 ByteOffset = int32(Member.ByteOffset);
|
|
HLSLOffset = FString::FromInt(ByteOffset / 16);
|
|
|
|
switch (ByteOffset % 16)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 4:
|
|
HLSLOffset.Append(TEXT(".y"));
|
|
break;
|
|
case 8:
|
|
HLSLOffset.Append(TEXT(".z"));
|
|
break;
|
|
case 12:
|
|
HLSLOffset.Append(TEXT(".w"));
|
|
break;
|
|
}
|
|
}
|
|
|
|
RootCBufferContent.Append(FString::Printf(
|
|
TEXT("%s %s : packoffset(c%s);\r\n"),
|
|
*Type,
|
|
*Member.Name,
|
|
*HLSLOffset));
|
|
ShaderParameterTypes.Add(Member.Name, FString());
|
|
}
|
|
|
|
FString NewShaderCode = FString::Printf(
|
|
TEXT("cbuffer %s\r\n")
|
|
TEXT("{\r\n")
|
|
TEXT("%s")
|
|
TEXT("}\r\n\r\n%s"),
|
|
FShaderParametersMetadata::kRootUniformBufferBindingName,
|
|
*RootCBufferContent,
|
|
*PreprocessedShaderSource);
|
|
|
|
PreprocessedShaderSource = MoveTemp(NewShaderCode);
|
|
}
|
|
|
|
|
|
// The cross compiler doesn't yet support struct initializers needed to construct static structs for uniform buffers
|
|
// Replace all uniform buffer struct member references (View.WorldToClip) with a flattened name that removes the struct dependency (View_WorldToClip)
|
|
void RemoveUniformBuffersFromSource(const FShaderCompilerEnvironment& Environment, FString& PreprocessedShaderSource)
|
|
{
|
|
TMap<FString, TArray<FUniformBufferMemberInfo>> UniformBufferNameToMembers;
|
|
UniformBufferNameToMembers.Reserve(Environment.ResourceTableLayoutHashes.Num());
|
|
|
|
// Build a mapping from uniform buffer name to its members
|
|
{
|
|
const TCHAR* UniformBufferStructIdentifier = TEXT("static const struct");
|
|
const int32 StructPrefixLen = FCString::Strlen(TEXT("static const "));
|
|
const int32 StructIdentifierLen = FCString::Strlen(UniformBufferStructIdentifier);
|
|
TCHAR* SearchPtr = FCString::Strstr(&PreprocessedShaderSource[0], UniformBufferStructIdentifier);
|
|
|
|
while (SearchPtr)
|
|
{
|
|
FString UniformBufferName;
|
|
const TCHAR* ConstStructEndPtr = ParseStructRecursive(SearchPtr + StructPrefixLen, UniformBufferName, 0, TEXT(""), TEXT(""), UniformBufferNameToMembers);
|
|
TCHAR* StructEndPtr = &PreprocessedShaderSource[ConstStructEndPtr - &PreprocessedShaderSource[0]];
|
|
|
|
// Comment out the uniform buffer struct and initializer
|
|
*SearchPtr = '/';
|
|
*(SearchPtr + 1) = '*';
|
|
*(StructEndPtr - 1) = '*';
|
|
*StructEndPtr = '/';
|
|
|
|
SearchPtr = FCString::Strstr(StructEndPtr, UniformBufferStructIdentifier);
|
|
}
|
|
}
|
|
|
|
// Replace all uniform buffer struct member references (View.WorldToClip) with a flattened name that removes the struct dependency (View_WorldToClip)
|
|
for (TMap<FString, TArray<FUniformBufferMemberInfo>>::TConstIterator It(UniformBufferNameToMembers); It; ++It)
|
|
{
|
|
const FString& UniformBufferName = It.Key();
|
|
FString UniformBufferAccessString = UniformBufferName + TEXT(".");
|
|
// MCPP inserts spaces after defines
|
|
FString UniformBufferAccessStringWithSpace = UniformBufferName + TEXT(" .");
|
|
|
|
// Search for the uniform buffer name first, as an optimization (instead of searching the entire source for every member)
|
|
TCHAR* SearchPtr = FindNextUniformBufferReference(&PreprocessedShaderSource[0], *UniformBufferName, UniformBufferName.Len());
|
|
|
|
while (SearchPtr)
|
|
{
|
|
const TArray<FUniformBufferMemberInfo>& UniformBufferMembers = It.Value();
|
|
|
|
// Find the matching member we are replacing
|
|
for (int32 MemberIndex = 0; MemberIndex < UniformBufferMembers.Num(); MemberIndex++)
|
|
{
|
|
const FString& MemberNameAsStructMember = UniformBufferMembers[MemberIndex].NameAsStructMember;
|
|
|
|
if (MatchStructMemberName(MemberNameAsStructMember, SearchPtr, PreprocessedShaderSource))
|
|
{
|
|
const FString& MemberNameGlobal = UniformBufferMembers[MemberIndex].GlobalName;
|
|
int32 NumWhitespacesToAdd = 0;
|
|
|
|
for (int32 i = 0; i < MemberNameAsStructMember.Len(); i++)
|
|
{
|
|
if (i < MemberNameAsStructMember.Len() - 1)
|
|
{
|
|
if (FChar::IsWhitespace(SearchPtr[i]))
|
|
{
|
|
NumWhitespacesToAdd++;
|
|
}
|
|
}
|
|
|
|
SearchPtr[i] = MemberNameGlobal[i];
|
|
}
|
|
|
|
// MCPP inserts spaces after defines
|
|
// #define ReflectionStruct OpaqueBasePass.Shared.Reflection
|
|
// 'ReflectionStruct.SkyLightCubemapBrightness' becomes 'OpaqueBasePass.Shared.Reflection .SkyLightCubemapBrightness' after MCPP
|
|
// In order to convert this struct member reference into a globally unique variable we move the spaces to the end
|
|
// 'OpaqueBasePass.Shared.Reflection .SkyLightCubemapBrightness' -> 'OpaqueBasePass_Shared_Reflection_SkyLightCubemapBrightness '
|
|
for (int32 i = 0; i < NumWhitespacesToAdd; i++)
|
|
{
|
|
// If we passed MatchStructMemberName, it should not be possible to overwrite the null terminator
|
|
check(SearchPtr[MemberNameAsStructMember.Len() + i] != 0);
|
|
SearchPtr[MemberNameAsStructMember.Len() + i] = ' ';
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
SearchPtr = FindNextUniformBufferReference(SearchPtr + UniformBufferAccessString.Len(), *UniformBufferName, UniformBufferName.Len());
|
|
}
|
|
}
|
|
}
|
|
|
|
FString CreateShaderCompilerWorkerDirectCommandLine(const FShaderCompilerInput& Input, uint32 CCFlags)
|
|
{
|
|
FString Text(TEXT("-directcompile -format="));
|
|
Text += Input.ShaderFormat.GetPlainNameString();
|
|
Text += TEXT(" -entry=");
|
|
Text += Input.EntryPointName;
|
|
switch (Input.Target.Frequency)
|
|
{
|
|
case SF_Vertex: Text += TEXT(" -vs"); break;
|
|
case SF_Hull: Text += TEXT(" -hs"); break;
|
|
case SF_Domain: Text += TEXT(" -ds"); break;
|
|
case SF_Geometry: Text += TEXT(" -gs"); break;
|
|
case SF_Pixel: Text += TEXT(" -ps"); break;
|
|
case SF_Compute: Text += TEXT(" -cs"); break;
|
|
#if RHI_RAYTRACING
|
|
case SF_RayGen: Text += TEXT(" -rgs"); break;
|
|
case SF_RayMiss: Text += TEXT(" -rms"); break;
|
|
case SF_RayHitGroup: Text += TEXT(" -rhs"); break;
|
|
#endif // RHI_RAYTRACING
|
|
default: break;
|
|
}
|
|
if (Input.bCompilingForShaderPipeline)
|
|
{
|
|
Text += TEXT(" -pipeline");
|
|
}
|
|
if (Input.bIncludeUsedOutputs)
|
|
{
|
|
Text += TEXT(" -usedoutputs=");
|
|
for (int32 Index = 0; Index < Input.UsedOutputs.Num(); ++Index)
|
|
{
|
|
if (Index != 0)
|
|
{
|
|
Text += TEXT("+");
|
|
}
|
|
Text += Input.UsedOutputs[Index];
|
|
}
|
|
}
|
|
|
|
Text += TEXT(" ");
|
|
Text += Input.DumpDebugInfoPath / Input.GetSourceFilename();
|
|
|
|
uint64 CFlags = 0;
|
|
for (int32 Index = 0; Index < Input.Environment.CompilerFlags.Num(); ++Index)
|
|
{
|
|
CFlags = CFlags | ((uint64)1 << (uint64)Input.Environment.CompilerFlags[Index]);
|
|
}
|
|
if (CFlags)
|
|
{
|
|
Text += TEXT(" -cflags=");
|
|
Text += FString::Printf(TEXT("%llu"), CFlags);
|
|
}
|
|
if (CCFlags)
|
|
{
|
|
Text += TEXT(" -hlslccflags=");
|
|
Text += FString::Printf(TEXT("%llu"), CCFlags);
|
|
}
|
|
// When we're running in directcompile mode, we don't to spam the crash reporter
|
|
Text += TEXT(" -nocrashreports");
|
|
return Text;
|
|
}
|
|
|
|
static int Mali_ExtractNumberInstructions(const FString &MaliOutput)
|
|
{
|
|
int ReturnedNum = 0;
|
|
|
|
// Parse the instruction count
|
|
const int32 InstructionStringLength = FPlatformString::Strlen(TEXT("Instructions Emitted:"));
|
|
const int32 InstructionsIndex = MaliOutput.Find(TEXT("Instructions Emitted:"));
|
|
|
|
if (InstructionsIndex != INDEX_NONE && InstructionsIndex + InstructionStringLength < MaliOutput.Len())
|
|
{
|
|
const int32 EndIndex = MaliOutput.Find(TEXT("\n"), ESearchCase::IgnoreCase, ESearchDir::FromStart, InstructionsIndex + InstructionStringLength);
|
|
|
|
if (EndIndex != INDEX_NONE)
|
|
{
|
|
int32 StartIndex = InstructionsIndex + InstructionStringLength;
|
|
|
|
bool bFoundNrStart = false;
|
|
int32 NumberIndex = 0;
|
|
|
|
while (StartIndex < EndIndex)
|
|
{
|
|
if (FChar::IsDigit(MaliOutput[StartIndex]) && !bFoundNrStart)
|
|
{
|
|
// found number's beginning
|
|
bFoundNrStart = true;
|
|
NumberIndex = StartIndex;
|
|
}
|
|
else if (FChar::IsWhitespace(MaliOutput[StartIndex]) && bFoundNrStart)
|
|
{
|
|
// found number's end
|
|
bFoundNrStart = false;
|
|
const FString NumberString = MaliOutput.Mid(NumberIndex, StartIndex - NumberIndex);
|
|
const float fNrInstructions = FCString::Atof(*NumberString);
|
|
ReturnedNum += ceil(fNrInstructions);
|
|
}
|
|
|
|
++StartIndex;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ReturnedNum;
|
|
}
|
|
|
|
static FString Mali_ExtractErrors(const FString &MaliOutput)
|
|
{
|
|
FString ReturnedErrors;
|
|
|
|
const int32 GlobalErrorIndex = MaliOutput.Find(TEXT("Compilation failed."));
|
|
|
|
// find each 'line' that begins with token "ERROR:" and copy it to the returned string
|
|
if (GlobalErrorIndex != INDEX_NONE)
|
|
{
|
|
int32 CompilationErrorIndex = MaliOutput.Find(TEXT("ERROR:"));
|
|
while (CompilationErrorIndex != INDEX_NONE)
|
|
{
|
|
int32 EndLineIndex = MaliOutput.Find(TEXT("\n"), ESearchCase::CaseSensitive, ESearchDir::FromStart, CompilationErrorIndex + 1);
|
|
EndLineIndex = EndLineIndex == INDEX_NONE ? MaliOutput.Len() - 1 : EndLineIndex;
|
|
|
|
ReturnedErrors += MaliOutput.Mid(CompilationErrorIndex, EndLineIndex - CompilationErrorIndex + 1);
|
|
|
|
CompilationErrorIndex = MaliOutput.Find(TEXT("ERROR:"), ESearchCase::CaseSensitive, ESearchDir::FromStart, EndLineIndex);
|
|
}
|
|
}
|
|
|
|
return ReturnedErrors;
|
|
}
|
|
|
|
void CompileOfflineMali(const FShaderCompilerInput& Input, FShaderCompilerOutput& ShaderOutput, const ANSICHAR* ShaderSource, const int32 SourceSize, bool bVulkanSpirV)
|
|
{
|
|
const bool bCompilerExecutableExists = FPaths::FileExists(Input.ExtraSettings.OfflineCompilerPath);
|
|
|
|
if (bCompilerExecutableExists)
|
|
{
|
|
const auto Frequency = (EShaderFrequency)Input.Target.Frequency;
|
|
const FString WorkingDir(FPlatformProcess::ShaderDir());
|
|
|
|
FString CompilerPath = Input.ExtraSettings.OfflineCompilerPath;
|
|
|
|
FString CompilerCommand = "";
|
|
|
|
// add process and thread ids to the file name to avoid collision between workers
|
|
auto ProcID = FPlatformProcess::GetCurrentProcessId();
|
|
auto ThreadID = FPlatformTLS::GetCurrentThreadId();
|
|
FString GLSLSourceFile = WorkingDir / TEXT("GLSLSource#") + FString::FromInt(ProcID) + TEXT("#") + FString::FromInt(ThreadID);
|
|
|
|
// setup compilation arguments
|
|
TCHAR *FileExt = nullptr;
|
|
switch (Frequency)
|
|
{
|
|
case SF_Vertex:
|
|
GLSLSourceFile += TEXT(".vert");
|
|
CompilerCommand += TEXT(" -v");
|
|
break;
|
|
case SF_Pixel:
|
|
GLSLSourceFile += TEXT(".frag");
|
|
CompilerCommand += TEXT(" -f");
|
|
break;
|
|
case SF_Geometry:
|
|
GLSLSourceFile += TEXT(".geom");
|
|
CompilerCommand += TEXT(" -g");
|
|
break;
|
|
case SF_Hull:
|
|
GLSLSourceFile += TEXT(".tesc");
|
|
CompilerCommand += TEXT(" -t");
|
|
break;
|
|
case SF_Domain:
|
|
GLSLSourceFile += TEXT(".tese");
|
|
CompilerCommand += TEXT(" -e");
|
|
break;
|
|
case SF_Compute:
|
|
GLSLSourceFile += TEXT(".comp");
|
|
CompilerCommand += TEXT(" -C");
|
|
break;
|
|
|
|
default:
|
|
GLSLSourceFile += TEXT(".shd");
|
|
break;
|
|
}
|
|
|
|
if (bVulkanSpirV)
|
|
{
|
|
CompilerCommand += TEXT(" -p");
|
|
}
|
|
else
|
|
{
|
|
CompilerCommand += TEXT(" -s");
|
|
}
|
|
|
|
FArchive* Ar = IFileManager::Get().CreateFileWriter(*GLSLSourceFile, FILEWRITE_EvenIfReadOnly);
|
|
|
|
if (Ar == nullptr)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// write out the shader source to a file and use it below as input for the compiler
|
|
Ar->Serialize((void*)ShaderSource, SourceSize);
|
|
delete Ar;
|
|
|
|
FString StdOut;
|
|
FString StdErr;
|
|
int32 ReturnCode = 0;
|
|
|
|
// Since v6.2.0, Mali compiler needs to be started in the executable folder or it won't find "external/glslangValidator" for Vulkan
|
|
FString CompilerWorkingDirectory = FPaths::GetPath(CompilerPath);
|
|
|
|
if (!CompilerWorkingDirectory.IsEmpty() && FPaths::DirectoryExists(CompilerWorkingDirectory))
|
|
{
|
|
// compiler command line contains flags and the GLSL source file name
|
|
CompilerCommand += " " + FPaths::ConvertRelativePathToFull(GLSLSourceFile);
|
|
|
|
// Run Mali shader compiler and wait for completion
|
|
FPlatformProcess::ExecProcess(*CompilerPath, *CompilerCommand, &ReturnCode, &StdOut, &StdErr, *CompilerWorkingDirectory);
|
|
}
|
|
else
|
|
{
|
|
StdErr = "Couldn't find Mali offline compiler at " + CompilerPath;
|
|
}
|
|
|
|
// parse Mali's output and extract instruction count or eventual errors
|
|
ShaderOutput.bSucceeded = (ReturnCode >= 0);
|
|
if (ShaderOutput.bSucceeded)
|
|
{
|
|
// check for errors
|
|
if (StdErr.Len())
|
|
{
|
|
ShaderOutput.bSucceeded = false;
|
|
|
|
FShaderCompilerError* NewError = new(ShaderOutput.Errors) FShaderCompilerError();
|
|
NewError->StrippedErrorMessage = TEXT("[Mali Offline Complier]\n") + StdErr;
|
|
}
|
|
else
|
|
{
|
|
FString Errors = Mali_ExtractErrors(StdOut);
|
|
|
|
if (Errors.Len())
|
|
{
|
|
FShaderCompilerError* NewError = new(ShaderOutput.Errors) FShaderCompilerError();
|
|
NewError->StrippedErrorMessage = TEXT("[Mali Offline Complier]\n") + Errors;
|
|
ShaderOutput.bSucceeded = false;
|
|
}
|
|
}
|
|
|
|
// extract instruction count
|
|
if (ShaderOutput.bSucceeded)
|
|
{
|
|
ShaderOutput.NumInstructions = Mali_ExtractNumberInstructions(StdOut);
|
|
}
|
|
}
|
|
|
|
// we're done so delete the shader file
|
|
IFileManager::Get().Delete(*GLSLSourceFile, true, true);
|
|
}
|
|
}
|
|
|
|
namespace CrossCompiler
|
|
{
|
|
FString CreateResourceTableFromEnvironment(const FShaderCompilerEnvironment& Environment)
|
|
{
|
|
FString Line = TEXT("\n#if 0 /*BEGIN_RESOURCE_TABLES*/\n");
|
|
for (auto Pair : Environment.ResourceTableLayoutHashes)
|
|
{
|
|
Line += FString::Printf(TEXT("%s, %d\n"), *Pair.Key, Pair.Value);
|
|
}
|
|
Line += TEXT("NULL, 0\n");
|
|
for (auto Pair : Environment.ResourceTableMap)
|
|
{
|
|
const FResourceTableEntry& Entry = Pair.Value;
|
|
Line += FString::Printf(TEXT("%s, %s, %d, %d\n"), *Pair.Key, *Entry.UniformBufferName, Entry.Type, Entry.ResourceIndex);
|
|
}
|
|
Line += TEXT("NULL, NULL, 0, 0\n");
|
|
|
|
Line += TEXT("#endif /*END_RESOURCE_TABLES*/\n");
|
|
return Line;
|
|
}
|
|
|
|
void CreateEnvironmentFromResourceTable(const FString& String, FShaderCompilerEnvironment& OutEnvironment)
|
|
{
|
|
FString Prolog = TEXT("#if 0 /*BEGIN_RESOURCE_TABLES*/");
|
|
int32 FoundBegin = String.Find(Prolog, ESearchCase::CaseSensitive);
|
|
if (FoundBegin == INDEX_NONE)
|
|
{
|
|
return;
|
|
}
|
|
int32 FoundEnd = String.Find(TEXT("#endif /*END_RESOURCE_TABLES*/"), ESearchCase::CaseSensitive, ESearchDir::FromStart, FoundBegin);
|
|
if (FoundEnd == INDEX_NONE)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// +1 for EOL
|
|
const TCHAR* Ptr = &String[FoundBegin + 1 + Prolog.Len()];
|
|
while (*Ptr == '\r' || *Ptr == '\n')
|
|
{
|
|
++Ptr;
|
|
}
|
|
const TCHAR* PtrEnd = &String[FoundEnd];
|
|
while (Ptr < PtrEnd)
|
|
{
|
|
FString UB;
|
|
if (!CrossCompiler::ParseIdentifier(Ptr, UB))
|
|
{
|
|
return;
|
|
}
|
|
if (!CrossCompiler::Match(Ptr, TEXT(", ")))
|
|
{
|
|
return;
|
|
}
|
|
int32 Hash;
|
|
if (!CrossCompiler::ParseSignedNumber(Ptr, Hash))
|
|
{
|
|
return;
|
|
}
|
|
// Optional \r
|
|
CrossCompiler::Match(Ptr, '\r');
|
|
if (!CrossCompiler::Match(Ptr, '\n'))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (UB == TEXT("NULL") && Hash == 0)
|
|
{
|
|
break;
|
|
}
|
|
OutEnvironment.ResourceTableLayoutHashes.FindOrAdd(UB) = (uint32)Hash;
|
|
}
|
|
|
|
while (Ptr < PtrEnd)
|
|
{
|
|
FString Name;
|
|
if (!CrossCompiler::ParseIdentifier(Ptr, Name))
|
|
{
|
|
return;
|
|
}
|
|
if (!CrossCompiler::Match(Ptr, TEXT(", ")))
|
|
{
|
|
return;
|
|
}
|
|
FString UB;
|
|
if (!CrossCompiler::ParseIdentifier(Ptr, UB))
|
|
{
|
|
return;
|
|
}
|
|
if (!CrossCompiler::Match(Ptr, TEXT(", ")))
|
|
{
|
|
return;
|
|
}
|
|
int32 Type;
|
|
if (!CrossCompiler::ParseSignedNumber(Ptr, Type))
|
|
{
|
|
return;
|
|
}
|
|
if (!CrossCompiler::Match(Ptr, TEXT(", ")))
|
|
{
|
|
return;
|
|
}
|
|
int32 ResourceIndex;
|
|
if (!CrossCompiler::ParseSignedNumber(Ptr, ResourceIndex))
|
|
{
|
|
return;
|
|
}
|
|
// Optional
|
|
CrossCompiler::Match(Ptr, '\r');
|
|
if (!CrossCompiler::Match(Ptr, '\n'))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (Name == TEXT("NULL") && UB == TEXT("NULL") && Type == 0 && ResourceIndex == 0)
|
|
{
|
|
break;
|
|
}
|
|
FResourceTableEntry& Entry = OutEnvironment.ResourceTableMap.FindOrAdd(Name);
|
|
Entry.UniformBufferName = UB;
|
|
Entry.Type = Type;
|
|
Entry.ResourceIndex = ResourceIndex;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse an error emitted by the HLSL cross-compiler.
|
|
* @param OutErrors - Array into which compiler errors may be added.
|
|
* @param InLine - A line from the compile log.
|
|
*/
|
|
void ParseHlslccError(TArray<FShaderCompilerError>& OutErrors, const FString& InLine, bool bUseAbsolutePaths)
|
|
{
|
|
const TCHAR* p = *InLine;
|
|
FShaderCompilerError* Error = new(OutErrors) FShaderCompilerError();
|
|
|
|
// Copy the filename.
|
|
while (*p && *p != TEXT('('))
|
|
{
|
|
Error->ErrorVirtualFilePath += (*p++);
|
|
}
|
|
|
|
if (!bUseAbsolutePaths)
|
|
{
|
|
Error->ErrorVirtualFilePath = ParseVirtualShaderFilename(Error->ErrorVirtualFilePath);
|
|
}
|
|
p++;
|
|
|
|
// Parse the line number.
|
|
int32 LineNumber = 0;
|
|
while (*p && *p >= TEXT('0') && *p <= TEXT('9'))
|
|
{
|
|
LineNumber = 10 * LineNumber + (*p++ - TEXT('0'));
|
|
}
|
|
Error->ErrorLineString = *FString::Printf(TEXT("%d"), LineNumber);
|
|
|
|
// Skip to the warning message.
|
|
while (*p && (*p == TEXT(')') || *p == TEXT(':') || *p == TEXT(' ') || *p == TEXT('\t')))
|
|
{
|
|
p++;
|
|
}
|
|
Error->StrippedErrorMessage = p;
|
|
}
|
|
|
|
|
|
/** Map shader frequency -> string for messages. */
|
|
static const TCHAR* FrequencyStringTable[] =
|
|
{
|
|
TEXT("Vertex"),
|
|
TEXT("Hull"),
|
|
TEXT("Domain"),
|
|
TEXT("Pixel"),
|
|
TEXT("Geometry"),
|
|
TEXT("Compute"),
|
|
TEXT("RayGen"),
|
|
TEXT("RayMiss"),
|
|
TEXT("RayHitGroup"),
|
|
};
|
|
|
|
/** Compile time check to verify that the GL mapping tables are up-to-date. */
|
|
static_assert(SF_NumFrequencies == ARRAY_COUNT(FrequencyStringTable), "NumFrequencies changed. Please update tables.");
|
|
|
|
const TCHAR* GetFrequencyName(EShaderFrequency Frequency)
|
|
{
|
|
check((int32)Frequency >= 0 && Frequency < SF_NumFrequencies);
|
|
return FrequencyStringTable[Frequency];
|
|
}
|
|
|
|
FHlslccHeader::FHlslccHeader() :
|
|
Name(TEXT(""))
|
|
{
|
|
NumThreads[0] = NumThreads[1] = NumThreads[2] = 0;
|
|
}
|
|
|
|
bool FHlslccHeader::Read(const ANSICHAR*& ShaderSource, int32 SourceLen)
|
|
{
|
|
#define DEF_PREFIX_STR(Str) \
|
|
static const ANSICHAR* Str##Prefix = "// @" #Str ": "; \
|
|
static const int32 Str##PrefixLen = FCStringAnsi::Strlen(Str##Prefix)
|
|
DEF_PREFIX_STR(Inputs);
|
|
DEF_PREFIX_STR(Outputs);
|
|
DEF_PREFIX_STR(UniformBlocks);
|
|
DEF_PREFIX_STR(Uniforms);
|
|
DEF_PREFIX_STR(PackedGlobals);
|
|
DEF_PREFIX_STR(PackedUB);
|
|
DEF_PREFIX_STR(PackedUBCopies);
|
|
DEF_PREFIX_STR(PackedUBGlobalCopies);
|
|
DEF_PREFIX_STR(Samplers);
|
|
DEF_PREFIX_STR(UAVs);
|
|
DEF_PREFIX_STR(SamplerStates);
|
|
DEF_PREFIX_STR(NumThreads);
|
|
#undef DEF_PREFIX_STR
|
|
|
|
// Skip any comments that come before the signature.
|
|
while (FCStringAnsi::Strncmp(ShaderSource, "//", 2) == 0 &&
|
|
FCStringAnsi::Strncmp(ShaderSource + 2, " !", 2) != 0 &&
|
|
FCStringAnsi::Strncmp(ShaderSource + 2, " @", 2) != 0)
|
|
{
|
|
ShaderSource += 2;
|
|
while (*ShaderSource && *ShaderSource++ != '\n')
|
|
{
|
|
// Do nothing
|
|
}
|
|
}
|
|
|
|
// Read shader name if any
|
|
if (FCStringAnsi::Strncmp(ShaderSource, "// !", 4) == 0)
|
|
{
|
|
ShaderSource += 4;
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
Name += (TCHAR)*ShaderSource;
|
|
++ShaderSource;
|
|
}
|
|
|
|
if (*ShaderSource == '\n')
|
|
{
|
|
++ShaderSource;
|
|
}
|
|
}
|
|
|
|
// Skip any comments that come before the signature.
|
|
while (FCStringAnsi::Strncmp(ShaderSource, "//", 2) == 0 &&
|
|
FCStringAnsi::Strncmp(ShaderSource + 2, " @", 2) != 0)
|
|
{
|
|
ShaderSource += 2;
|
|
while (*ShaderSource && *ShaderSource++ != '\n')
|
|
{
|
|
// Do nothing
|
|
}
|
|
}
|
|
|
|
if (FCStringAnsi::Strncmp(ShaderSource, InputsPrefix, InputsPrefixLen) == 0)
|
|
{
|
|
ShaderSource += InputsPrefixLen;
|
|
|
|
if (!ReadInOut(ShaderSource, Inputs))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (FCStringAnsi::Strncmp(ShaderSource, OutputsPrefix, OutputsPrefixLen) == 0)
|
|
{
|
|
ShaderSource += OutputsPrefixLen;
|
|
|
|
if (!ReadInOut(ShaderSource, Outputs))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (FCStringAnsi::Strncmp(ShaderSource, UniformBlocksPrefix, UniformBlocksPrefixLen) == 0)
|
|
{
|
|
ShaderSource += UniformBlocksPrefixLen;
|
|
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
FAttribute UniformBlock;
|
|
if (!ParseIdentifier(ShaderSource, UniformBlock.Name))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, '('))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, UniformBlock.Index))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ')'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
UniformBlocks.Add(UniformBlock);
|
|
|
|
if (Match(ShaderSource, '\n'))
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (Match(ShaderSource, ','))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//#todo-rco: Need a log here
|
|
//UE_LOG(ShaderCompilerCommon, Warning, TEXT("Invalid char '%c'"), *ShaderSource);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (FCStringAnsi::Strncmp(ShaderSource, UniformsPrefix, UniformsPrefixLen) == 0)
|
|
{
|
|
// @todo-mobile: Will we ever need to support this code path?
|
|
check(0);
|
|
return false;
|
|
/*
|
|
ShaderSource += UniformsPrefixLen;
|
|
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
uint16 ArrayIndex = 0;
|
|
uint16 Offset = 0;
|
|
uint16 NumComponents = 0;
|
|
|
|
FString ParameterName = ParseIdentifier(ShaderSource);
|
|
verify(ParameterName.Len() > 0);
|
|
verify(Match(ShaderSource, '('));
|
|
ArrayIndex = ParseNumber(ShaderSource);
|
|
verify(Match(ShaderSource, ':'));
|
|
Offset = ParseNumber(ShaderSource);
|
|
verify(Match(ShaderSource, ':'));
|
|
NumComponents = ParseNumber(ShaderSource);
|
|
verify(Match(ShaderSource, ')'));
|
|
|
|
ParameterMap.AddParameterAllocation(
|
|
*ParameterName,
|
|
ArrayIndex,
|
|
Offset * BytesPerComponent,
|
|
NumComponents * BytesPerComponent
|
|
);
|
|
|
|
if (ArrayIndex < OGL_NUM_PACKED_UNIFORM_ARRAYS)
|
|
{
|
|
PackedUniformSize[ArrayIndex] = FMath::Max<uint16>(
|
|
PackedUniformSize[ArrayIndex],
|
|
BytesPerComponent * (Offset + NumComponents)
|
|
);
|
|
}
|
|
|
|
// Skip the comma.
|
|
if (Match(ShaderSource, '\n'))
|
|
{
|
|
break;
|
|
}
|
|
|
|
verify(Match(ShaderSource, ','));
|
|
}
|
|
|
|
Match(ShaderSource, '\n');
|
|
*/
|
|
}
|
|
|
|
// @PackedGlobals: Global0(h:0,1),Global1(h:4,1),Global2(h:8,1)
|
|
if (FCStringAnsi::Strncmp(ShaderSource, PackedGlobalsPrefix, PackedGlobalsPrefixLen) == 0)
|
|
{
|
|
ShaderSource += PackedGlobalsPrefixLen;
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
FPackedGlobal PackedGlobal;
|
|
if (!ParseIdentifier(ShaderSource, PackedGlobal.Name))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, '('))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
PackedGlobal.PackedType = *ShaderSource++;
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, PackedGlobal.Offset))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ','))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, PackedGlobal.Count))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ')'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
PackedGlobals.Add(PackedGlobal);
|
|
|
|
// Break if EOL
|
|
if (Match(ShaderSource, '\n'))
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Has to be a comma!
|
|
if (Match(ShaderSource, ','))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//#todo-rco: Need a log here
|
|
//UE_LOG(ShaderCompilerCommon, Warning, TEXT("Invalid char '%c'"), *ShaderSource);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Packed Uniform Buffers (Multiple lines)
|
|
// @PackedUB: CBuffer(0): CBMember0(0,1),CBMember1(1,1)
|
|
while (FCStringAnsi::Strncmp(ShaderSource, PackedUBPrefix, PackedUBPrefixLen) == 0)
|
|
{
|
|
ShaderSource += PackedUBPrefixLen;
|
|
|
|
FPackedUB PackedUB;
|
|
|
|
if (!ParseIdentifier(ShaderSource, PackedUB.Attribute.Name))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, '('))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, PackedUB.Attribute.Index))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ')'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ' '))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
FPackedUB::FMember Member;
|
|
ParseIdentifier(ShaderSource, Member.Name);
|
|
if (!Match(ShaderSource, '('))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, Member.Offset))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ','))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, Member.Count))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ')'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
PackedUB.Members.Add(Member);
|
|
|
|
// Break if EOL
|
|
if (Match(ShaderSource, '\n'))
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Has to be a comma!
|
|
if (Match(ShaderSource, ','))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//#todo-rco: Need a log here
|
|
//UE_LOG(ShaderCompilerCommon, Warning, TEXT("Invalid char '%c'"), *ShaderSource);
|
|
return false;
|
|
}
|
|
|
|
PackedUBs.Add(PackedUB);
|
|
}
|
|
|
|
// @PackedUBCopies: 0:0-0:h:0:1,0:1-0:h:4:1,1:0-1:h:0:1
|
|
if (FCStringAnsi::Strncmp(ShaderSource, PackedUBCopiesPrefix, PackedUBCopiesPrefixLen) == 0)
|
|
{
|
|
ShaderSource += PackedUBCopiesPrefixLen;
|
|
if (!ReadCopies(ShaderSource, false, PackedUBCopies))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// @PackedUBGlobalCopies: 0:0-h:12:1,0:1-h:16:1,1:0-h:20:1
|
|
if (FCStringAnsi::Strncmp(ShaderSource, PackedUBGlobalCopiesPrefix, PackedUBGlobalCopiesPrefixLen) == 0)
|
|
{
|
|
ShaderSource += PackedUBGlobalCopiesPrefixLen;
|
|
if (!ReadCopies(ShaderSource, true, PackedUBGlobalCopies))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (FCStringAnsi::Strncmp(ShaderSource, SamplersPrefix, SamplersPrefixLen) == 0)
|
|
{
|
|
ShaderSource += SamplersPrefixLen;
|
|
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
FSampler Sampler;
|
|
|
|
if (!ParseIdentifier(ShaderSource, Sampler.Name))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, '('))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, Sampler.Offset))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, Sampler.Count))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (Match(ShaderSource, '['))
|
|
{
|
|
// Sampler States
|
|
do
|
|
{
|
|
FString SamplerState;
|
|
|
|
if (!ParseIdentifier(ShaderSource, SamplerState))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
Sampler.SamplerStates.Add(SamplerState);
|
|
}
|
|
while (Match(ShaderSource, ','));
|
|
|
|
if (!Match(ShaderSource, ']'))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!Match(ShaderSource, ')'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
Samplers.Add(Sampler);
|
|
|
|
// Break if EOL
|
|
if (Match(ShaderSource, '\n'))
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Has to be a comma!
|
|
if (Match(ShaderSource, ','))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//#todo-rco: Need a log here
|
|
//UE_LOG(ShaderCompilerCommon, Warning, TEXT("Invalid char '%c'"), *ShaderSource);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (FCStringAnsi::Strncmp(ShaderSource, UAVsPrefix, UAVsPrefixLen) == 0)
|
|
{
|
|
ShaderSource += UAVsPrefixLen;
|
|
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
FUAV UAV;
|
|
|
|
if (!ParseIdentifier(ShaderSource, UAV.Name))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, '('))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, UAV.Offset))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, UAV.Count))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ')'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
UAVs.Add(UAV);
|
|
|
|
// Break if EOL
|
|
if (Match(ShaderSource, '\n'))
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Has to be a comma!
|
|
if (Match(ShaderSource, ','))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//#todo-rco: Need a log here
|
|
//UE_LOG(ShaderCompilerCommon, Warning, TEXT("Invalid char '%c'"), *ShaderSource);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (FCStringAnsi::Strncmp(ShaderSource, SamplerStatesPrefix, SamplerStatesPrefixLen) == 0)
|
|
{
|
|
ShaderSource += SamplerStatesPrefixLen;
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
FAttribute SamplerState;
|
|
if (!ParseIntegerNumber(ShaderSource, SamplerState.Index))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIdentifier(ShaderSource, SamplerState.Name))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
SamplerStates.Add(SamplerState);
|
|
|
|
// Break if EOL
|
|
if (Match(ShaderSource, '\n'))
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Has to be a comma!
|
|
if (Match(ShaderSource, ','))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//#todo-rco: Need a log here
|
|
//UE_LOG(ShaderCompilerCommon, Warning, TEXT("Invalid char '%c'"), *ShaderSource);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (FCStringAnsi::Strncmp(ShaderSource, NumThreadsPrefix, NumThreadsPrefixLen) == 0)
|
|
{
|
|
ShaderSource += NumThreadsPrefixLen;
|
|
if (!ParseIntegerNumber(ShaderSource, NumThreads[0]))
|
|
{
|
|
return false;
|
|
}
|
|
if (!Match(ShaderSource, ','))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ' '))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, NumThreads[1]))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ','))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ' '))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, NumThreads[2]))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, '\n'))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return ParseCustomHeaderEntries(ShaderSource);
|
|
}
|
|
|
|
bool FHlslccHeader::ReadCopies(const ANSICHAR*& ShaderSource, bool bGlobals, TArray<FPackedUBCopy>& OutCopies)
|
|
{
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
FPackedUBCopy PackedUBCopy;
|
|
PackedUBCopy.DestUB = 0;
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, PackedUBCopy.SourceUB))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, PackedUBCopy.SourceOffset))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, '-'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!bGlobals)
|
|
{
|
|
if (!ParseIntegerNumber(ShaderSource, PackedUBCopy.DestUB))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
PackedUBCopy.DestPackedType = *ShaderSource++;
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, PackedUBCopy.DestOffset))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIntegerNumber(ShaderSource, PackedUBCopy.Count))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
OutCopies.Add(PackedUBCopy);
|
|
|
|
// Break if EOL
|
|
if (Match(ShaderSource, '\n'))
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Has to be a comma!
|
|
if (Match(ShaderSource, ','))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//#todo-rco: Need a log here
|
|
//UE_LOG(ShaderCompilerCommon, Warning, TEXT("Invalid char '%c'"), *ShaderSource);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool FHlslccHeader::ReadInOut(const ANSICHAR*& ShaderSource, TArray<FInOut>& OutAttributes)
|
|
{
|
|
while (*ShaderSource && *ShaderSource != '\n')
|
|
{
|
|
FInOut Attribute;
|
|
|
|
if (!ParseIdentifier(ShaderSource, Attribute.Type))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (Match(ShaderSource, '['))
|
|
{
|
|
if (!ParseIntegerNumber(ShaderSource, Attribute.ArrayCount))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!Match(ShaderSource, ']'))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Attribute.ArrayCount = 0;
|
|
}
|
|
|
|
if (Match(ShaderSource, ';'))
|
|
{
|
|
if (!ParseSignedNumber(ShaderSource, Attribute.Index))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!Match(ShaderSource, ':'))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!ParseIdentifier(ShaderSource, Attribute.Name))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Optional array suffix
|
|
if (Match(ShaderSource, '['))
|
|
{
|
|
Attribute.Name += '[';
|
|
while (*ShaderSource)
|
|
{
|
|
Attribute.Name += *ShaderSource;
|
|
if (Match(ShaderSource, ']'))
|
|
{
|
|
break;
|
|
}
|
|
++ShaderSource;
|
|
}
|
|
}
|
|
|
|
OutAttributes.Add(Attribute);
|
|
|
|
// Break if EOL
|
|
if (Match(ShaderSource, '\n'))
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Has to be a comma!
|
|
if (Match(ShaderSource, ','))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//#todo-rco: Need a log here
|
|
//UE_LOG(ShaderCompilerCommon, Warning, TEXT("Invalid char '%c'"), *ShaderSource);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|