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

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• Hash : b7582680
  Author :
  Date : 2025-02-24T18:04:32
  

  Reland: GL: Allow untranslated shaders to pass through on GLES
  
  Add an EGL extension EGL_ANGLE_create_context_passthrough_shaders which
  uses the NULL translator and passes the original shader to the driver.
  The parser is still used for shader reflection.
  
  Always enable the null compiler backend. It has almost no binary size
  cost and is now potentially used when the null ANGLE backend is not
  enabled.
  
  Bug: angleproject:398857482
  Change-Id: Id528189ccbbacb1c444eacb151baadfda9fcc04b
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6488609
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@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_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
  {
  
  class TIntermBlock;
  class TIntermDeclaration;
  class TSymbolTable;
  class TIntermTyped;
  
  float NumericLexFloat32OutOfRangeToInfinity(const std::string &str, bool preserveDenorms);
  
  // 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, bool preserveDenorms);
  
  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,
                              char prefix,
                              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 IsFragmentOutput(TQualifier qualifier);
  bool IsOutputNULL(ShShaderOutput output);
  bool IsOutputESSL(ShShaderOutput output);
  bool IsOutputGLSL(ShShaderOutput output);
  bool IsOutputHLSL(ShShaderOutput output);
  bool IsOutputSPIRV(ShShaderOutput output);
  bool IsOutputMSL(ShShaderOutput output);
  bool IsOutputWGSL(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);
  
  // 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);
  
  // A convenience view of a TIntermDeclaration node's children.
  struct Declaration
  {
      TIntermSymbol &symbol;
      TIntermTyped *initExpr;  // Non-null iff declaration is initialized.
  };
  
  // Returns a `Declaration` view of the given node, for declarator `index` of
  // the declarations in `declNode`.
  Declaration ViewDeclaration(TIntermDeclaration &declNode, uint32_t index = 0);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_UTIL_H_
  

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