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Wojtek Figat
223
Source/ThirdParty/glslang/MachineIndependent/reflection.h
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Source/ThirdParty/glslang/MachineIndependent/reflection.h
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//
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// Copyright (C) 2013-2016 LunarG, Inc.
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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//
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// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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#if !defined(GLSLANG_WEB) && !defined(GLSLANG_ANGLE)
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#ifndef _REFLECTION_INCLUDED
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#define _REFLECTION_INCLUDED
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#include "../Public/ShaderLang.h"
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#include "../Include/Types.h"
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#include <list>
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#include <set>
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//
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// A reflection database and its interface, consistent with the OpenGL API reflection queries.
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//
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namespace glslang {
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class TIntermediate;
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class TIntermAggregate;
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class TReflectionTraverser;
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// The full reflection database
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class TReflection {
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public:
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TReflection(EShReflectionOptions opts, EShLanguage first, EShLanguage last)
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: options(opts), firstStage(first), lastStage(last), badReflection(TObjectReflection::badReflection())
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{
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for (int dim=0; dim<3; ++dim)
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localSize[dim] = 0;
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}
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virtual ~TReflection() {}
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// grow the reflection stage by stage
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bool addStage(EShLanguage, const TIntermediate&);
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// for mapping a uniform index to a uniform object's description
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int getNumUniforms() { return (int)indexToUniform.size(); }
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const TObjectReflection& getUniform(int i) const
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{
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if (i >= 0 && i < (int)indexToUniform.size())
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return indexToUniform[i];
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else
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return badReflection;
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}
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// for mapping a block index to the block's description
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int getNumUniformBlocks() const { return (int)indexToUniformBlock.size(); }
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const TObjectReflection& getUniformBlock(int i) const
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{
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if (i >= 0 && i < (int)indexToUniformBlock.size())
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return indexToUniformBlock[i];
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else
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return badReflection;
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}
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// for mapping an pipeline input index to the input's description
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int getNumPipeInputs() { return (int)indexToPipeInput.size(); }
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const TObjectReflection& getPipeInput(int i) const
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{
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if (i >= 0 && i < (int)indexToPipeInput.size())
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return indexToPipeInput[i];
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else
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return badReflection;
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}
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// for mapping an pipeline output index to the output's description
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int getNumPipeOutputs() { return (int)indexToPipeOutput.size(); }
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const TObjectReflection& getPipeOutput(int i) const
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{
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if (i >= 0 && i < (int)indexToPipeOutput.size())
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return indexToPipeOutput[i];
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else
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return badReflection;
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}
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// for mapping from an atomic counter to the uniform index
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int getNumAtomicCounters() const { return (int)atomicCounterUniformIndices.size(); }
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const TObjectReflection& getAtomicCounter(int i) const
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{
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if (i >= 0 && i < (int)atomicCounterUniformIndices.size())
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return getUniform(atomicCounterUniformIndices[i]);
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else
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return badReflection;
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}
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// for mapping a buffer variable index to a buffer variable object's description
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int getNumBufferVariables() { return (int)indexToBufferVariable.size(); }
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const TObjectReflection& getBufferVariable(int i) const
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{
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if (i >= 0 && i < (int)indexToBufferVariable.size())
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return indexToBufferVariable[i];
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else
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return badReflection;
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}
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// for mapping a storage block index to the storage block's description
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int getNumStorageBuffers() const { return (int)indexToBufferBlock.size(); }
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const TObjectReflection& getStorageBufferBlock(int i) const
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{
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if (i >= 0 && i < (int)indexToBufferBlock.size())
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return indexToBufferBlock[i];
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else
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return badReflection;
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}
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// for mapping any name to its index (block names, uniform names and input/output names)
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int getIndex(const char* name) const
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{
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TNameToIndex::const_iterator it = nameToIndex.find(name);
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if (it == nameToIndex.end())
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return -1;
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else
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return it->second;
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}
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// see getIndex(const char*)
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int getIndex(const TString& name) const { return getIndex(name.c_str()); }
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// for mapping any name to its index (only pipe input/output names)
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int getPipeIOIndex(const char* name, const bool inOrOut) const
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{
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TNameToIndex::const_iterator it = inOrOut ? pipeInNameToIndex.find(name) : pipeOutNameToIndex.find(name);
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if (it == (inOrOut ? pipeInNameToIndex.end() : pipeOutNameToIndex.end()))
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return -1;
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else
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return it->second;
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}
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// see gePipeIOIndex(const char*, const bool)
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int getPipeIOIndex(const TString& name, const bool inOrOut) const { return getPipeIOIndex(name.c_str(), inOrOut); }
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// Thread local size
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unsigned getLocalSize(int dim) const { return dim <= 2 ? localSize[dim] : 0; }
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void dump();
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protected:
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friend class glslang::TReflectionTraverser;
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void buildCounterIndices(const TIntermediate&);
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void buildUniformStageMask(const TIntermediate& intermediate);
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void buildAttributeReflection(EShLanguage, const TIntermediate&);
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// Need a TString hash: typedef std::unordered_map<TString, int> TNameToIndex;
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typedef std::map<std::string, int> TNameToIndex;
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typedef std::vector<TObjectReflection> TMapIndexToReflection;
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typedef std::vector<int> TIndices;
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TMapIndexToReflection& GetBlockMapForStorage(TStorageQualifier storage)
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{
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if ((options & EShReflectionSeparateBuffers) && storage == EvqBuffer)
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return indexToBufferBlock;
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return indexToUniformBlock;
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}
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TMapIndexToReflection& GetVariableMapForStorage(TStorageQualifier storage)
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{
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if ((options & EShReflectionSeparateBuffers) && storage == EvqBuffer)
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return indexToBufferVariable;
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return indexToUniform;
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}
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EShReflectionOptions options;
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EShLanguage firstStage;
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EShLanguage lastStage;
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TObjectReflection badReflection; // return for queries of -1 or generally out of range; has expected descriptions with in it for this
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TNameToIndex nameToIndex; // maps names to indexes; can hold all types of data: uniform/buffer and which function names have been processed
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TNameToIndex pipeInNameToIndex; // maps pipe in names to indexes, this is a fix to seperate pipe I/O from uniforms and buffers.
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TNameToIndex pipeOutNameToIndex; // maps pipe out names to indexes, this is a fix to seperate pipe I/O from uniforms and buffers.
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TMapIndexToReflection indexToUniform;
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TMapIndexToReflection indexToUniformBlock;
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TMapIndexToReflection indexToBufferVariable;
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TMapIndexToReflection indexToBufferBlock;
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TMapIndexToReflection indexToPipeInput;
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TMapIndexToReflection indexToPipeOutput;
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TIndices atomicCounterUniformIndices;
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unsigned int localSize[3];
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};
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} // end namespace glslang
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#endif // _REFLECTION_INCLUDED
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#endif // !GLSLANG_WEB && !GLSLANG_ANGLE
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