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//
// 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 IsFragmentOutput(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_
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