RewriteSampleMaskVariable.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.

//

// RewriteSampleMaskVariable.cpp: Find any references to gl_SampleMask and gl_SampleMaskIn, and

// rewrite it with ANGLESampleMask or ANGLESampleMaskIn.

//

#ifndef COMPILER_TRANSLATOR_TREEUTIL_REWRITESAMPLEMASKVARIABLE_H_

#define COMPILER_TRANSLATOR_TREEUTIL_REWRITESAMPLEMASKVARIABLE_H_

#include "common/angleutils.h"

namespace sh

class TCompiler;

class TIntermBlock;

class TSymbolTable;

class TIntermTyped;

// Rewrite every gl_SampleMask or gl_SampleMaskIn to "ANGLESampleMask" or "ANGLESampleMaskIn", then

// at the end of shader re-assign the values of this global variable to gl_SampleMask and

// gl_SampleMaskIn. This to solve the problem which the non constant index is used for the unsized

// array problem.

[[nodiscard]] bool RewriteSampleMask(TCompiler *compiler,

                                     TIntermBlock *root,

                                     TSymbolTable *symbolTable,

                                     const TIntermTyped *numSamplesUniform);

[[nodiscard]] bool RewriteSampleMaskIn(TCompiler *compiler,

                                       TIntermBlock *root,

                                       TSymbolTable *symbolTable);

}  // namespace sh

#endif  // COMPILER_TRANSLATOR_TREEUTIL_REWRITESAMPLEMASKVARIABLE_H_