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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_MSL_PROGRAMPRELUDE_H_
#define COMPILER_TRANSLATOR_MSL_PROGRAMPRELUDE_H_
#include <unordered_set>
#include "common/angleutils.h"
namespace sh
{
class TInfoSinkBase;
class TIntermBlock;
enum class MetalShaderType
{
None,
Vertex,
Fragment,
Compute, // Unused currently
Count,
};
struct ProgramPreludeConfig
{
public:
ProgramPreludeConfig() {}
explicit ProgramPreludeConfig(MetalShaderType shaderType) : shaderType(shaderType) {}
bool hasStructEq = false;
MetalShaderType shaderType = MetalShaderType::None;
};
// This emits fixed helper Metal code directly without adding code to the AST. This walks the AST to
// figure out the required what prelude MSL code is needed for various things in the AST. You can
// think of this as effectively inlining various portions of a helper library into the emitted
// Metal program.
[[nodiscard]] bool EmitProgramPrelude(TIntermBlock &root,
TInfoSinkBase &out,
const ProgramPreludeConfig &ppc);
} // namespace sh
#endif // COMPILER_TRANSLATOR_MSL_PROGRAMPRELUDE_H_
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