SpecializationConstant.h

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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_