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

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• Hash : 5e579a18
  Author :
  Date : 2021-07-13T01:22:48
  

  Vulkan: SPIR-V Gen: Support row-major blocks
  
  The SPIR-V type generation is refactored to contain all
  type-differentiating properties in a specific struct that is passed
  around.  The following can lead to different SPIR-V types generated from
  the same GLSL type:
  
  - Block storage for blocks
  - Invariant for blocks
  - Row-major for blocks with matrices
  - Row-major for matrix arrays in blocks
  - Bool when used inside an interface block (not yet implemented)
  
  Previously, block storage and invariant were passed around.  Instead,
  with this change the aggregate of all the above is passed around.  The
  row-major specialization is added in this change.
  
  This change also refactors the uniform/buffer block encoding to use the
  existing encoders in blocklayout.h.
  
  Bug: angleproject:4889
  Change-Id: I3cfa8bd96bb380a1f1f05fbbd6b3eebd702c9e24
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3021670
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  

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• 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);
  
  size_t FindFieldIndex(const TFieldList &fieldList, const char *fieldName);
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_UTIL_H_
  

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