TranslatorVulkan.h

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//

// Copyright 2016 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.

//

// TranslatorVulkan:

//   A GLSL-based translator that outputs shaders that fit GL_KHR_vulkan_glsl and feeds them into

//   glslang to spit out SPIR-V.

//   See: https://www.khronos.org/registry/vulkan/specs/misc/GL_KHR_vulkan_glsl.txt

//

#ifndef COMPILER_TRANSLATOR_TRANSLATORVULKAN_H_

#define COMPILER_TRANSLATOR_TRANSLATORVULKAN_H_

#include "compiler/translator/Compiler.h"

namespace sh

class TOutputVulkanGLSL;

class SpecConst;

class DriverUniform;

class TranslatorVulkan : public TCompiler

  public:

    TranslatorVulkan(sh::GLenum type, ShShaderSpec spec);

  protected:

    [[nodiscard]] bool translate(TIntermBlock *root,

                                 const ShCompileOptions &compileOptions,

                                 PerformanceDiagnostics *perfDiagnostics) override;

    bool shouldFlattenPragmaStdglInvariantAll() override;

    // Subclass can call this method to transform the AST before writing the final output.

    // See TranslatorMetal.cpp.

    [[nodiscard]] bool translateImpl(TInfoSinkBase &sink,

                                     TIntermBlock *root,

                                     const ShCompileOptions &compileOptions,

                                     PerformanceDiagnostics *perfDiagnostics,

                                     SpecConst *specConst,

                                     DriverUniform *driverUniforms);

    void writeExtensionBehavior(const ShCompileOptions &compileOptions, TInfoSinkBase &sink);

    // Give subclass such as TranslatorMetal a chance to do depth transform before

    // TranslatorVulkan apply its own transform.

    [[nodiscard]] virtual bool transformDepthBeforeCorrection(TIntermBlock *root,

                                                              const DriverUniform *driverUniforms)

        return true;

    // Generate SPIR-V out of intermediate GLSL through glslang.

    [[nodiscard]] bool compileToSpirv(const TInfoSinkBase &glsl);

};

}  // namespace sh

#endif  // COMPILER_TRANSLATOR_TRANSLATORVULKAN_H_