RewriteUnaddressableReferences.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.

//

#ifndef COMPILER_TRANSLATOR_TREEOPS_MSL_REWRITEUNADDRESSABLEREFERENCES_H_

#define COMPILER_TRANSLATOR_TREEOPS_MSL_REWRITEUNADDRESSABLEREFERENCES_H_

#include "compiler/translator/Compiler.h"

#include "compiler/translator/msl/ProgramPrelude.h"

#include "compiler/translator/msl/SymbolEnv.h"

namespace sh

// Given:

//   void foo(out x);

// It is possible for the following to be legal in GLSL but not in Metal:

//   foo(expression);

// This can happen in cases where `expression` is a vector swizzle or vector element access.

// This rewrite functionality introduces temporaries that serve as proxies to be passed to the

// out/inout parameters as needed. The corresponding expressions get populated with their

// proxies after the function call.

[[nodiscard]] bool RewriteUnaddressableReferences(TCompiler &compiler,

                                                  TIntermBlock &root,

                                                  SymbolEnv &symbolEnv);

}  // namespace sh

#endif  // COMPILER_TRANSLATOR_TREEOPS_MSL_REWRITEUNADDRESSABLEREFERENCES_H_