diff options
Diffstat (limited to 'gfx/angle/src/compiler/translator/Compiler.h')
| -rwxr-xr-x | gfx/angle/src/compiler/translator/Compiler.h | 76 |
1 files changed, 33 insertions, 43 deletions
diff --git a/gfx/angle/src/compiler/translator/Compiler.h b/gfx/angle/src/compiler/translator/Compiler.h index 42b4f8f06..6b682374b 100755 --- a/gfx/angle/src/compiler/translator/Compiler.h +++ b/gfx/angle/src/compiler/translator/Compiler.h @@ -24,16 +24,15 @@ #include "compiler/translator/VariableInfo.h" #include "third_party/compiler/ArrayBoundsClamper.h" -namespace sh -{ - class TCompiler; +class TDependencyGraph; #ifdef ANGLE_ENABLE_HLSL class TranslatorHLSL; #endif // ANGLE_ENABLE_HLSL // -// Helper function to identify specs that are based on the WebGL spec. +// Helper function to identify specs that are based on the WebGL spec, +// like the CSS Shaders spec. // bool IsWebGLBasedSpec(ShShaderSpec spec); @@ -41,16 +40,6 @@ bool IsWebGLBasedSpec(ShShaderSpec spec); // 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. @@ -85,14 +74,12 @@ class TCompiler : public TShHandleBase // 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); + // allocator. Returns NULL whenever there are compilation errors. + TIntermNode *compileTreeForTesting(const char* const shaderStrings[], + size_t numStrings, int compileOptions); - bool compile(const char *const shaderStrings[], - size_t numStrings, - ShCompileOptions compileOptions); + bool compile(const char* const shaderStrings[], + size_t numStrings, int compileOptions); // Get results of the last compilation. int getShaderVersion() const { return shaderVersion; } @@ -117,7 +104,7 @@ class TCompiler : public TShHandleBase ShShaderOutput getOutputType() const { return outputType; } const std::string &getBuiltInResourcesString() const { return builtInResourcesString; } - bool shouldRunLoopAndIndexingValidation(ShCompileOptions compileOptions) const; + bool shouldRunLoopAndIndexingValidation(int compileOptions) const; // Get the resources set by InitBuiltInSymbolTable const ShBuiltInResources& getResources() const; @@ -132,21 +119,20 @@ class TCompiler : public TShHandleBase bool checkCallDepth(); // 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); // Add emulated functions to the built-in function emulator. - virtual void initBuiltInFunctionEmulator(BuiltInFunctionEmulator *emu, - ShCompileOptions compileOptions){}; + virtual void initBuiltInFunctionEmulator(BuiltInFunctionEmulator *emu, int compileOptions) {}; // Translate to object code. - virtual void translate(TIntermNode *root, ShCompileOptions compileOptions) = 0; + virtual void translate(TIntermNode *root, int compileOptions) = 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 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. - void useAllMembersInUnusedStandardAndSharedBlocks(TIntermNode *root); // Insert statements to initialize output variables in the beginning of main(). // This is to avoid undefined behaviors. void initializeOutputVariables(TIntermNode *root); @@ -155,13 +141,20 @@ class TCompiler : public TShHandleBase // 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; const char *getSourcePath() const; const TPragma& getPragma() const { return mPragma; } - void writePragma(ShCompileOptions compileOptions); + void writePragma(int compileOptions); unsigned int *getTemporaryIndex() { return &mTemporaryIndex; } // Relies on collectVariables having been called. bool isVaryingDefined(const char *varyingName); @@ -170,16 +163,20 @@ class TCompiler : public TShHandleBase ShArrayIndexClampingStrategy getArrayIndexClampingStrategy() const; const BuiltInFunctionEmulator& getBuiltInFunctionEmulator() const; + virtual bool shouldCollectVariables(int compileOptions) + { + return (compileOptions & SH_VARIABLES) != 0; + } + virtual bool shouldFlattenPragmaStdglInvariantAll() = 0; - virtual bool shouldCollectVariables(ShCompileOptions compileOptions); - bool wereVariablesCollected() const; std::vector<sh::Attribute> attributes; std::vector<sh::OutputVariable> outputVariables; std::vector<sh::Uniform> uniforms; std::vector<sh::ShaderVariable> expandedUniforms; std::vector<sh::Varying> varyings; std::vector<sh::InterfaceBlock> interfaceBlocks; + bool variablesCollected; private: // Creates the function call DAG for further analysis, returning false if there is a recursion @@ -190,18 +187,13 @@ class TCompiler : public TShHandleBase void initSamplerDefaultPrecision(TBasicType samplerType); - // Collect info for all attribs, uniforms, varyings. - void collectVariables(TIntermNode *root); - - bool variablesCollected; - // Removes unused function declarations and prototypes from the AST class UnusedPredicate; - bool pruneUnusedFunctions(TIntermBlock *root); + bool pruneUnusedFunctions(TIntermNode *root); - TIntermBlock *compileTreeImpl(const char *const shaderStrings[], - size_t numStrings, - const ShCompileOptions compileOptions); + TIntermNode *compileTreeImpl(const char *const shaderStrings[], + size_t numStrings, + const int compileOptions); sh::GLenum shaderType; ShShaderSpec shaderSpec; @@ -269,6 +261,4 @@ TCompiler* ConstructCompiler( sh::GLenum type, ShShaderSpec spec, ShShaderOutput output); void DeleteCompiler(TCompiler*); -} // namespace sh - #endif // COMPILER_TRANSLATOR_COMPILER_H_ |