kc3-lang/angle/src/compiler/translator/util.h

Branch : - branch - main - tag -

• Show log

  Commit

• Author : Shahbaz Youssefi
  Date : 2021-08-05 10:35:10
  Hash : 0cd99779
  Message : Translator: Propagate precision to children nodes Similarly to glslang, when the precision of a node is determined, propagate that precision to any of its children that doesn't already have a precision. Ultimately these should only include TIntermConstantUnion nodes. Bug: angleproject:4889 Bug: angleproject:6132 Change-Id: I121231d04c7cf92fc3f07716019ffe88eca48b88 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3075126 Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

• src/compiler/translator/util.h

• //
  // 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_UTIL_H_
  #define COMPILER_TRANSLATOR_UTIL_H_
  
  #include <stack>
  
  #include <GLSLANG/ShaderLang.h>
  #include "angle_gl.h"
  
  #include "compiler/translator/HashNames.h"
  #include "compiler/translator/ImmutableString.h"
  #include "compiler/translator/Operator_autogen.h"
  #include "compiler/translator/Types.h"
  
  // If overflow happens, clamp the value to UINT_MIN or UINT_MAX.
  // Return false if overflow happens.
  bool atoi_clamp(const char *str, unsigned int *value);
  
  namespace sh
  {
  
  // Keeps track of whether an implicit conversion from int/uint to float is possible.
  // These conversions are supported in desktop GLSL shaders only.
  // Also keeps track of which side of operation should be converted.
  enum class ImplicitTypeConversion
  {
      Same,
      Left,
      Right,
      Invalid,
  };
  
  class TIntermBlock;
  class TSymbolTable;
  class TIntermTyped;
  
  float NumericLexFloat32OutOfRangeToInfinity(const std::string &str);
  
  // strtof_clamp is like strtof but
  //   1. it forces C locale, i.e. forcing '.' as decimal point.
  //   2. it sets the value to infinity if overflow happens.
  //   3. str should be guaranteed to be in the valid format for a floating point number as defined
  //      by the grammar in the ESSL 3.00.6 spec section 4.1.4.
  // Return false if overflow happens.
  bool strtof_clamp(const std::string &str, float *value);
  
  GLenum GLVariableType(const TType &type);
  GLenum GLVariablePrecision(const TType &type);
  bool IsVaryingIn(TQualifier qualifier);
  bool IsVaryingOut(TQualifier qualifier);
  bool IsVarying(TQualifier qualifier);
  bool IsMatrixGLType(GLenum type);
  bool IsGeometryShaderInput(GLenum shaderType, TQualifier qualifier);
  bool IsTessellationControlShaderInput(GLenum shaderType, TQualifier qualifier);
  bool IsTessellationControlShaderOutput(GLenum shaderType, TQualifier qualifier);
  bool IsTessellationEvaluationShaderInput(GLenum shaderType, TQualifier qualifier);
  InterpolationType GetInterpolationType(TQualifier qualifier);
  InterpolationType GetFieldInterpolationType(TQualifier qualifier);
  
  // Returns array brackets including size with outermost array size first, as specified in GLSL ES
  // 3.10 section 4.1.9.
  ImmutableString ArrayString(const TType &type);
  
  ImmutableString GetTypeName(const TType &type, ShHashFunction64 hashFunction, NameMap *nameMap);
  
  TType GetShaderVariableBasicType(const sh::ShaderVariable &var);
  
  void DeclareGlobalVariable(TIntermBlock *root, const TVariable *variable);
  
  bool IsBuiltinOutputVariable(TQualifier qualifier);
  bool IsBuiltinFragmentInputVariable(TQualifier qualifier);
  bool CanBeInvariantESSL1(TQualifier qualifier);
  bool CanBeInvariantESSL3OrGreater(TQualifier qualifier);
  bool IsShaderOutput(TQualifier qualifier);
  bool IsOutputESSL(ShShaderOutput output);
  bool IsOutputGLSL(ShShaderOutput output);
  bool IsOutputHLSL(ShShaderOutput output);
  bool IsOutputVulkan(ShShaderOutput output);
  bool IsOutputMetal(ShShaderOutput output);
  bool IsOutputMetalDirect(ShShaderOutput output);
  
  bool IsInShaderStorageBlock(TIntermTyped *node);
  
  GLenum GetImageInternalFormatType(TLayoutImageInternalFormat iifq);
  // ESSL 1.00 shaders nest function body scope within function parameter scope
  bool IsSpecWithFunctionBodyNewScope(ShShaderSpec shaderSpec, int shaderVersion);
  
  // Helper functions for implicit conversions
  ImplicitTypeConversion GetConversion(TBasicType t1, TBasicType t2);
  
  bool IsValidImplicitConversion(ImplicitTypeConversion conversion, TOperator op);
  
  // Whether the given basic type requires precision.
  bool IsPrecisionApplicableToType(TBasicType type);
  
  // Whether this is the name of a built-in that can be redeclared by the shader.
  bool IsRedeclarableBuiltIn(const ImmutableString &name);
  
  size_t FindFieldIndex(const TFieldList &fieldList, const char *fieldName);
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_UTIL_H_