FlagSamplersWithTexelFetch.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.

//

// FlagSamplersForTexelFetch.h: finds all instances of texelFetch used with a static reference to a

// sampler uniform, and flag that uniform as having been used with texelFetch

//

#ifndef COMPILER_TRANSLATOR_TREEOPS_SPIRV_FLAGSAMPLERSWITHTEXELFETCH_H_

#define COMPILER_TRANSLATOR_TREEOPS_SPIRV_FLAGSAMPLERSWITHTEXELFETCH_H_

#include "GLSLANG/ShaderVars.h"

#include "common/angleutils.h"

namespace sh

class TCompiler;

class TIntermBlock;

class TSymbolTable;

// This flags all samplers which are statically accessed by a texelFetch invokation- that is, the

// sampler is used as a direct argument to the call to texelFetch. Dynamic accesses, or accesses

// with any amount of indirection, are not counted.

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

                                             TIntermBlock *root,

                                             TSymbolTable *symbolTable,

                                             std::vector<sh::ShaderVariable> *uniforms);

}  // namespace sh

#endif  // COMPILER_TRANSLATOR_TREEOPS_SPIRV_FLAGSAMPLERSWITHTEXELFETCH_H_