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//
// Copyright 2020 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.
//
// SpecializationConst.h: Add code to generate AST node for specialization constant.
//
#ifndef COMPILER_TRANSLATOR_TREEUTIL_SPECIALIZATIONCONSTANT_H_
#define COMPILER_TRANSLATOR_TREEUTIL_SPECIALIZATIONCONSTANT_H_
#include "common/angleutils.h"
#include "compiler/translator/Compiler.h"
#include "compiler/translator/SymbolTable.h"
class TIntermBlock;
class TIntermTyped;
class TIntermSymbol;
class TVariable;
namespace sh
{
class SpecConst
{
public:
SpecConst(TSymbolTable *symbolTable, const ShCompileOptions &compileOptions, GLenum shaderType);
virtual ~SpecConst();
// Flip/rotation
// Returns a boolean: should X and Y be swapped?
TIntermTyped *getSwapXY();
// Dither emulation
TIntermTyped *getDither();
void declareSpecConsts(TIntermBlock *root);
SpecConstUsageBits getSpecConstUsageBits() const { return mUsageBits; }
private:
TIntermSymbol *getRotation();
// If unsupported, this should be set to null.
TSymbolTable *mSymbolTable;
const ShCompileOptions &mCompileOptions;
TVariable *mSurfaceRotationVar;
TVariable *mDitherVar;
// Bit is set if YFlip or Rotation has been used
SpecConstUsageBits mUsageBits;
};
} // namespace sh
#endif // COMPILER_TRANSLATOR_TREEUTIL_SPECIALIZATIONCONSTANT_H_
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