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//
// Copyright 2019 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.
//
// TranslatorMetal:
// A GLSL-based translator that outputs shaders that fit GL_KHR_vulkan_glsl.
// It takes into account some considerations for Metal backend also.
// The shaders are then fed into glslang to spit out SPIR-V.
// See: https://www.khronos.org/registry/vulkan/specs/misc/GL_KHR_vulkan_glsl.txt
//
// The SPIR-V will then be translated to Metal Shading Language later in Metal backend.
//
#ifndef LIBANGLE_RENDERER_METAL_TRANSLATORMETAL_H_
#define LIBANGLE_RENDERER_METAL_TRANSLATORMETAL_H_
#include "compiler/translator/DriverUniformMetal.h"
#include "compiler/translator/TranslatorVulkan.h"
#include "compiler/translator/tree_util/DriverUniform.h"
#include "compiler/translator/tree_util/SpecializationConstant.h"
namespace sh
{
// TODO: http://anglebug.com/5339 Implement it using actual specialization constant. For now we are
// redirecting to driver uniforms
class SpecConstMetal : public SpecConst
{
public:
SpecConstMetal(TSymbolTable *symbolTable,
const ShCompileOptions &compileOptions,
GLenum shaderType)
: SpecConst(symbolTable, compileOptions, shaderType)
{}
~SpecConstMetal() override {}
private:
};
class TranslatorMetal : public TranslatorVulkan
{
public:
TranslatorMetal(sh::GLenum type, ShShaderSpec spec);
protected:
[[nodiscard]] bool translate(TIntermBlock *root,
const ShCompileOptions &compileOptions,
PerformanceDiagnostics *perfDiagnostics) override;
[[nodiscard]] bool transformDepthBeforeCorrection(TIntermBlock *root,
const DriverUniform *driverUniforms) override;
[[nodiscard]] bool insertSampleMaskWritingLogic(TInfoSinkBase &sink,
TIntermBlock *root,
const DriverUniformMetal *driverUniforms);
[[nodiscard]] bool insertRasterizerDiscardLogic(TInfoSinkBase &sink, TIntermBlock *root);
};
} // namespace sh
#endif /* LIBANGLE_RENDERER_METAL_TRANSLATORMETAL_H_ */
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