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Diffstat (limited to 'src/3rdparty/angle/src/compiler/translator/Compiler.h')
-rw-r--r-- | src/3rdparty/angle/src/compiler/translator/Compiler.h | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/compiler/translator/Compiler.h b/src/3rdparty/angle/src/compiler/translator/Compiler.h new file mode 100644 index 0000000000..5eac2d89d1 --- /dev/null +++ b/src/3rdparty/angle/src/compiler/translator/Compiler.h @@ -0,0 +1,191 @@ +// +// Copyright (c) 2002-2013 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 _SHHANDLE_INCLUDED_ +#define _SHHANDLE_INCLUDED_ + +// +// Machine independent part of the compiler private objects +// sent as ShHandle to the driver. +// +// This should not be included by driver code. +// + +#include "compiler/translator/BuiltInFunctionEmulator.h" +#include "compiler/translator/ExtensionBehavior.h" +#include "compiler/translator/HashNames.h" +#include "compiler/translator/InfoSink.h" +#include "compiler/translator/SymbolTable.h" +#include "compiler/translator/VariableInfo.h" +#include "third_party/compiler/ArrayBoundsClamper.h" + +class TCompiler; +class TDependencyGraph; +class TranslatorHLSL; + +// +// Helper function to identify specs that are based on the WebGL spec, +// like the CSS Shaders spec. +// +bool IsWebGLBasedSpec(ShShaderSpec spec); + +// +// The base class used to back handles returned to the driver. +// +class TShHandleBase { +public: + TShHandleBase(); + virtual ~TShHandleBase(); + virtual TCompiler* getAsCompiler() { return 0; } + virtual TranslatorHLSL* getAsTranslatorHLSL() { return 0; } + +protected: + // Memory allocator. Allocates and tracks memory required by the compiler. + // Deallocates all memory when compiler is destructed. + TPoolAllocator 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); + virtual ~TCompiler(); + virtual TCompiler* getAsCompiler() { return this; } + + bool Init(const ShBuiltInResources& resources); + bool compile(const char* const shaderStrings[], + size_t numStrings, + int compileOptions); + + // Get results of the last compilation. + int getShaderVersion() const { return shaderVersion; } + TInfoSink& getInfoSink() { return infoSink; } + + const std::vector<sh::Attribute> &getAttributes() const { return attributes; } + const std::vector<sh::Attribute> &getOutputVariables() const { return outputVariables; } + const std::vector<sh::Uniform> &getUniforms() const { return uniforms; } + const std::vector<sh::Uniform> &getExpandedUniforms() const { return expandedUniforms; } + const std::vector<sh::Varying> &getVaryings() const { return varyings; } + const std::vector<sh::Varying> &getExpandedVaryings() const { return expandedVaryings; } + const std::vector<sh::InterfaceBlock> &getInterfaceBlocks() const { return interfaceBlocks; } + + ShHashFunction64 getHashFunction() const { return hashFunction; } + NameMap& getNameMap() { return nameMap; } + TSymbolTable& getSymbolTable() { return symbolTable; } + ShShaderSpec getShaderSpec() const { return shaderSpec; } + ShShaderOutput getOutputType() const { return outputType; } + std::string getBuiltInResourcesString() const { return builtInResourcesString; } + + protected: + sh::GLenum getShaderType() const { return shaderType; } + // Initialize symbol-table with built-in symbols. + bool InitBuiltInSymbolTable(const ShBuiltInResources& resources); + // Compute the string representation of the built-in resources + void setResourceString(); + // Clears the results from the previous compilation. + void clearResults(); + // Return true if function recursion is detected or call depth exceeded. + bool detectCallDepth(TIntermNode* root, TInfoSink& infoSink, bool limitCallStackDepth); + // Returns true if a program has no conflicting or missing fragment outputs + bool validateOutputs(TIntermNode* root); + // Rewrites a shader's intermediate tree according to the CSS Shaders spec. + void rewriteCSSShader(TIntermNode* root); + // Returns true if the given shader does not exceed the minimum + // functionality mandated in GLSL 1.0 spec Appendix A. + bool validateLimitations(TIntermNode* root); + // Collect info for all attribs, uniforms, varyings. + void collectVariables(TIntermNode* root); + // Translate to object code. + virtual void translate(TIntermNode* root) = 0; + // Returns true if, after applying the packing rules in the GLSL 1.017 spec + // Appendix A, section 7, the shader does not use too many uniforms. + bool enforcePackingRestrictions(); + // Insert statements to initialize varyings without static use in the beginning + // of main(). It is to work around a Mac driver where such varyings in a vertex + // shader may be optimized out incorrectly at compile time, causing a link failure. + // This function should only be applied to vertex shaders. + void initializeVaryingsWithoutStaticUse(TIntermNode* 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. + void initializeGLPosition(TIntermNode* root); + // Returns true if the shader passes the restrictions that aim to prevent timing attacks. + bool enforceTimingRestrictions(TIntermNode* root, bool outputGraph); + // Returns true if the shader does not use samplers. + bool enforceVertexShaderTimingRestrictions(TIntermNode* root); + // Returns true if the shader does not use sampler dependent values to affect control + // flow or in operations whose time can depend on the input values. + bool enforceFragmentShaderTimingRestrictions(const TDependencyGraph& graph); + // Return true if the maximum expression complexity is below the limit. + bool limitExpressionComplexity(TIntermNode* root); + // Get built-in extensions with default behavior. + const TExtensionBehavior& getExtensionBehavior() const; + // Get the resources set by InitBuiltInSymbolTable + const ShBuiltInResources& getResources() const; + + const ArrayBoundsClamper& getArrayBoundsClamper() const; + ShArrayIndexClampingStrategy getArrayIndexClampingStrategy() const; + const BuiltInFunctionEmulator& getBuiltInFunctionEmulator() const; + + std::vector<sh::Attribute> attributes; + std::vector<sh::Attribute> outputVariables; + std::vector<sh::Uniform> uniforms; + std::vector<sh::Uniform> expandedUniforms; + std::vector<sh::Varying> varyings; + std::vector<sh::Varying> expandedVaryings; + std::vector<sh::InterfaceBlock> interfaceBlocks; + + private: + sh::GLenum shaderType; + ShShaderSpec shaderSpec; + ShShaderOutput outputType; + + int maxUniformVectors; + int maxExpressionComplexity; + int maxCallStackDepth; + + ShBuiltInResources compileResources; + std::string builtInResourcesString; + + // Built-in symbol table for the given language, spec, and resources. + // It is preserved from compile-to-compile. + TSymbolTable symbolTable; + // Built-in extensions with default behavior. + TExtensionBehavior extensionBehavior; + bool fragmentPrecisionHigh; + + ArrayBoundsClamper arrayBoundsClamper; + ShArrayIndexClampingStrategy clampingStrategy; + BuiltInFunctionEmulator builtInFunctionEmulator; + + // Results of compilation. + int shaderVersion; + TInfoSink infoSink; // Output sink. + + // name hashing. + ShHashFunction64 hashFunction; + NameMap nameMap; +}; + +// +// 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*); + +#endif // _SHHANDLE_INCLUDED_ |