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Diffstat (limited to 'gfx/angle/checkout/src/compiler/translator/Compiler.h')
| -rw-r--r-- | gfx/angle/checkout/src/compiler/translator/Compiler.h | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/Compiler.h b/gfx/angle/checkout/src/compiler/translator/Compiler.h new file mode 100644 index 0000000000..3cacb2a76a --- /dev/null +++ b/gfx/angle/checkout/src/compiler/translator/Compiler.h @@ -0,0 +1,361 @@ +// +// Copyright 2002 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +#ifndef COMPILER_TRANSLATOR_COMPILER_H_ +#define COMPILER_TRANSLATOR_COMPILER_H_ + +// +// Machine independent part of the compiler private objects +// sent as ShHandle to the driver. +// +// This should not be included by driver code. +// + +#include <GLSLANG/ShaderVars.h> + +#include "common/PackedEnums.h" +#include "compiler/translator/BuiltInFunctionEmulator.h" +#include "compiler/translator/CallDAG.h" +#include "compiler/translator/Diagnostics.h" +#include "compiler/translator/ExtensionBehavior.h" +#include "compiler/translator/HashNames.h" +#include "compiler/translator/InfoSink.h" +#include "compiler/translator/Pragma.h" +#include "compiler/translator/SymbolTable.h" +#include "compiler/translator/ValidateAST.h" +#include "third_party/compiler/ArrayBoundsClamper.h" + +namespace sh +{ + +class TCompiler; +class TParseContext; +#ifdef ANGLE_ENABLE_HLSL +class TranslatorHLSL; +#endif // ANGLE_ENABLE_HLSL + +using SpecConstUsageBits = angle::PackedEnumBitSet<vk::SpecConstUsage, uint32_t>; + +// +// Helper function to check if the shader type is GLSL. +// +bool IsGLSL130OrNewer(ShShaderOutput output); +bool IsGLSL420OrNewer(ShShaderOutput output); +bool IsGLSL410OrOlder(ShShaderOutput output); + +// +// Helper function to check if the invariant qualifier can be removed. +// +bool RemoveInvariant(sh::GLenum shaderType, + int shaderVersion, + ShShaderOutput outputType, + ShCompileOptions compileOptions); + +// +// The base class used to back handles returned to the driver. +// +class TShHandleBase +{ + public: + TShHandleBase(); + virtual ~TShHandleBase(); + virtual TCompiler *getAsCompiler() { return 0; } +#ifdef ANGLE_ENABLE_HLSL + virtual TranslatorHLSL *getAsTranslatorHLSL() { return 0; } +#endif // ANGLE_ENABLE_HLSL + + protected: + // Memory allocator. Allocates and tracks memory required by the compiler. + // Deallocates all memory when compiler is destructed. + angle::PoolAllocator allocator; +}; + +// +// The base class for the machine dependent compiler to derive from +// for managing object code from the compile. +// +class TCompiler : public TShHandleBase +{ + public: + TCompiler(sh::GLenum type, ShShaderSpec spec, ShShaderOutput output); + ~TCompiler() override; + TCompiler *getAsCompiler() override { return this; } + + bool Init(const ShBuiltInResources &resources); + + // compileTreeForTesting should be used only when tests require access to + // the AST. Users of this function need to manually manage the global pool + // allocator. Returns nullptr whenever there are compilation errors. + TIntermBlock *compileTreeForTesting(const char *const shaderStrings[], + size_t numStrings, + ShCompileOptions compileOptions); + + bool compile(const char *const shaderStrings[], + size_t numStrings, + ShCompileOptions compileOptions); + + // Get results of the last compilation. + int getShaderVersion() const { return mShaderVersion; } + TInfoSink &getInfoSink() { return mInfoSink; } + + bool isEarlyFragmentTestsSpecified() const { return mEarlyFragmentTestsSpecified; } + bool isEarlyFragmentTestsOptimized() const { return mEarlyFragmentTestsOptimized; } + SpecConstUsageBits getSpecConstUsageBits() const { return mSpecConstUsageBits; } + + bool isComputeShaderLocalSizeDeclared() const { return mComputeShaderLocalSizeDeclared; } + const sh::WorkGroupSize &getComputeShaderLocalSize() const { return mComputeShaderLocalSize; } + int getNumViews() const { return mNumViews; } + + // Clears the results from the previous compilation. + void clearResults(); + + const std::vector<sh::ShaderVariable> &getAttributes() const { return mAttributes; } + const std::vector<sh::ShaderVariable> &getOutputVariables() const { return mOutputVariables; } + const std::vector<sh::ShaderVariable> &getUniforms() const { return mUniforms; } + const std::vector<sh::ShaderVariable> &getInputVaryings() const { return mInputVaryings; } + const std::vector<sh::ShaderVariable> &getOutputVaryings() const { return mOutputVaryings; } + const std::vector<sh::InterfaceBlock> &getInterfaceBlocks() const { return mInterfaceBlocks; } + const std::vector<sh::InterfaceBlock> &getUniformBlocks() const { return mUniformBlocks; } + const std::vector<sh::InterfaceBlock> &getShaderStorageBlocks() const + { + return mShaderStorageBlocks; + } + + ShHashFunction64 getHashFunction() const { return mResources.HashFunction; } + NameMap &getNameMap() { return mNameMap; } + TSymbolTable &getSymbolTable() { return mSymbolTable; } + ShShaderSpec getShaderSpec() const { return mShaderSpec; } + ShShaderOutput getOutputType() const { return mOutputType; } + const std::string &getBuiltInResourcesString() const { return mBuiltInResourcesString; } + + bool shouldRunLoopAndIndexingValidation(ShCompileOptions compileOptions) const; + + // Get the resources set by InitBuiltInSymbolTable + const ShBuiltInResources &getResources() const; + + int getGeometryShaderMaxVertices() const { return mGeometryShaderMaxVertices; } + int getGeometryShaderInvocations() const { return mGeometryShaderInvocations; } + TLayoutPrimitiveType getGeometryShaderInputPrimitiveType() const + { + return mGeometryShaderInputPrimitiveType; + } + TLayoutPrimitiveType getGeometryShaderOutputPrimitiveType() const + { + return mGeometryShaderOutputPrimitiveType; + } + + unsigned int getStructSize(const ShaderVariable &var) const; + + int getTessControlShaderOutputVertices() const { return mTessControlShaderOutputVertices; } + TLayoutTessEvaluationType getTessEvaluationShaderInputPrimitiveType() const + { + return mTessEvaluationShaderInputPrimitiveType; + } + TLayoutTessEvaluationType getTessEvaluationShaderInputVertexSpacingType() const + { + return mTessEvaluationShaderInputVertexSpacingType; + } + TLayoutTessEvaluationType getTessEvaluationShaderInputOrderingType() const + { + return mTessEvaluationShaderInputOrderingType; + } + TLayoutTessEvaluationType getTessEvaluationShaderInputPointType() const + { + return mTessEvaluationShaderInputPointType; + } + + unsigned int getSharedMemorySize() const; + + sh::GLenum getShaderType() const { return mShaderType; } + + bool validateAST(TIntermNode *root); + + protected: + // Add emulated functions to the built-in function emulator. + virtual void initBuiltInFunctionEmulator(BuiltInFunctionEmulator *emu, + ShCompileOptions compileOptions) + {} + // Translate to object code. May generate performance warnings through the diagnostics. + ANGLE_NO_DISCARD virtual bool translate(TIntermBlock *root, + ShCompileOptions compileOptions, + PerformanceDiagnostics *perfDiagnostics) = 0; + // Get built-in extensions with default behavior. + const TExtensionBehavior &getExtensionBehavior() const; + const char *getSourcePath() const; + const TPragma &getPragma() const { return mPragma; } + void writePragma(ShCompileOptions compileOptions); + // Relies on collectVariables having been called. + bool isVaryingDefined(const char *varyingName); + + const ArrayBoundsClamper &getArrayBoundsClamper() const; + ShArrayIndexClampingStrategy getArrayIndexClampingStrategy() const; + const BuiltInFunctionEmulator &getBuiltInFunctionEmulator() const; + + virtual bool shouldFlattenPragmaStdglInvariantAll() = 0; + virtual bool shouldCollectVariables(ShCompileOptions compileOptions); + // If precision emulation needed, set isNeeded to true and emulate precision for given + // outputLanguage, returning false if that fails, else returning true. + bool emulatePrecisionIfNeeded(TIntermBlock *root, + TInfoSinkBase &sink, + bool *isNeeded, + const ShShaderOutput outputLanguage); + + bool wereVariablesCollected() const; + std::vector<sh::ShaderVariable> mAttributes; + std::vector<sh::ShaderVariable> mOutputVariables; + std::vector<sh::ShaderVariable> mUniforms; + std::vector<sh::ShaderVariable> mInputVaryings; + std::vector<sh::ShaderVariable> mOutputVaryings; + std::vector<sh::ShaderVariable> mSharedVariables; + std::vector<sh::InterfaceBlock> mInterfaceBlocks; + std::vector<sh::InterfaceBlock> mUniformBlocks; + std::vector<sh::InterfaceBlock> mShaderStorageBlocks; + + // Track what should be validated given passes currently applied. + ValidateASTOptions mValidateASTOptions; + + // Specialization constant usage bits + SpecConstUsageBits mSpecConstUsageBits; + + private: + // Initialize symbol-table with built-in symbols. + bool initBuiltInSymbolTable(const ShBuiltInResources &resources); + // Compute the string representation of the built-in resources + void setResourceString(); + // Return false if the call depth is exceeded. + bool checkCallDepth(); + // Insert statements to reference all members in unused uniform blocks with standard and shared + // layout. This is to work around a Mac driver that treats unused standard/shared + // uniform blocks as inactive. + ANGLE_NO_DISCARD bool useAllMembersInUnusedStandardAndSharedBlocks(TIntermBlock *root); + // Insert statements to initialize output variables in the beginning of main(). + // This is to avoid undefined behaviors. + ANGLE_NO_DISCARD bool initializeOutputVariables(TIntermBlock *root); + // Insert gl_Position = vec4(0,0,0,0) to the beginning of main(). + // It is to work around a Linux driver bug where missing this causes compile failure + // while spec says it is allowed. + // This function should only be applied to vertex shaders. + ANGLE_NO_DISCARD bool initializeGLPosition(TIntermBlock *root); + // Return true if the maximum expression complexity is below the limit. + bool limitExpressionComplexity(TIntermBlock *root); + // Creates the function call DAG for further analysis, returning false if there is a recursion + bool initCallDag(TIntermNode *root); + // Return false if "main" doesn't exist + bool tagUsedFunctions(); + void internalTagUsedFunction(size_t index); + + void collectInterfaceBlocks(); + + bool mVariablesCollected; + + bool mGLPositionInitialized; + + // Removes unused function declarations and prototypes from the AST + class UnusedPredicate; + void pruneUnusedFunctions(TIntermBlock *root); + + TIntermBlock *compileTreeImpl(const char *const shaderStrings[], + size_t numStrings, + const ShCompileOptions compileOptions); + + // Fetches and stores shader metadata that is not stored within the AST itself, such as shader + // version. + void setASTMetadata(const TParseContext &parseContext); + + // Check if shader version meets the requirement. + bool checkShaderVersion(TParseContext *parseContext); + + // Does checks that need to be run after parsing is complete and returns true if they pass. + bool checkAndSimplifyAST(TIntermBlock *root, + const TParseContext &parseContext, + ShCompileOptions compileOptions); + + sh::GLenum mShaderType; + ShShaderSpec mShaderSpec; + ShShaderOutput mOutputType; + + struct FunctionMetadata + { + FunctionMetadata() : used(false) {} + bool used; + }; + + CallDAG mCallDag; + std::vector<FunctionMetadata> mFunctionMetadata; + + ShBuiltInResources mResources; + std::string mBuiltInResourcesString; + + // Built-in symbol table for the given language, spec, and resources. + // It is preserved from compile-to-compile. + TSymbolTable mSymbolTable; + // Built-in extensions with default behavior. + TExtensionBehavior mExtensionBehavior; + + ArrayBoundsClamper mArrayBoundsClamper; + BuiltInFunctionEmulator mBuiltInFunctionEmulator; + + // Results of compilation. + int mShaderVersion; + TInfoSink mInfoSink; // Output sink. + TDiagnostics mDiagnostics; + const char *mSourcePath; // Path of source file or NULL + + // fragment shader early fragment tests + bool mEarlyFragmentTestsSpecified; + bool mEarlyFragmentTestsOptimized; + + // compute shader local group size + bool mComputeShaderLocalSizeDeclared; + sh::WorkGroupSize mComputeShaderLocalSize; + + // GL_OVR_multiview num_views. + int mNumViews; + + // geometry shader parameters. + int mGeometryShaderMaxVertices; + int mGeometryShaderInvocations; + TLayoutPrimitiveType mGeometryShaderInputPrimitiveType; + TLayoutPrimitiveType mGeometryShaderOutputPrimitiveType; + + // tesssellation shader parameters + int mTessControlShaderOutputVertices; + TLayoutTessEvaluationType mTessEvaluationShaderInputPrimitiveType; + TLayoutTessEvaluationType mTessEvaluationShaderInputVertexSpacingType; + TLayoutTessEvaluationType mTessEvaluationShaderInputOrderingType; + TLayoutTessEvaluationType mTessEvaluationShaderInputPointType; + + // name hashing. + NameMap mNameMap; + + TPragma mPragma; + + ShCompileOptions mCompileOptions; +}; + +// +// This is the interface between the machine independent code +// and the machine dependent code. +// +// The machine dependent code should derive from the classes +// above. Then Construct*() and Delete*() will create and +// destroy the machine dependent objects, which contain the +// above machine independent information. +// +TCompiler *ConstructCompiler(sh::GLenum type, ShShaderSpec spec, ShShaderOutput output); +void DeleteCompiler(TCompiler *); + +void EmitEarlyFragmentTestsGLSL(const TCompiler &, TInfoSinkBase &sink); +void EmitWorkGroupSizeGLSL(const TCompiler &, TInfoSinkBase &sink); +void EmitMultiviewGLSL(const TCompiler &, + const ShCompileOptions &, + const TExtension, + const TBehavior, + TInfoSinkBase &sink); + +} // namespace sh + +#endif // COMPILER_TRANSLATOR_COMPILER_H_ |