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

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• Hash : 8797714c
  Author :
  Date : 2020-12-01T11:39:25
  

  Vulkan: Support OES_shader_io_blocks
  
  Enables OES/EXT_shader_io_blocks extensions in Vulkan backends.
  
  With shader I/O blocks, the varyings can now be an array of struct (the
  block itself) of struct (nested in the block).
  
  This change is missing a number of features.  In particular, if the
  shader I/O block has a location decoration in the middle of the block,
  that is not handled yet.
  
  Based on changes from m.maiya@samsung.com and jmadill@chromium.org.
  
  Bug: angleproject:3580
  Tests: dEQP-GLES31.functional.shaders.linkage.es31.io_block.*
   dEQP-GLES31.functional.separate_shader.validation.es31.io_blocks.*
   dEQP-GLES31.functional.program_interface_query.program_input.*
   dEQP-GLES31.functional.program_interface_query.program_output.*
  Change-Id: I593840475d2365ff6c9ce7b2290f5ee462a30dfb
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2567645
  Reviewed-by: Mohan Maiya <m.maiya@samsung.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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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.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 IsGeometryShaderInput(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 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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