Source/WebCore/Modules/WebGPU/GPUBindGroupLayoutEntry.h

/*
 * Copyright (C) 2021 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 2. Redistributions in binary form must reproduce the above copyright
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 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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#pragma once

#include "GPUBufferBindingLayout.h"
#include "GPUExternalTextureBindingLayout.h"
#include "GPUIntegralTypes.h"
#include "GPUSamplerBindingLayout.h"
#include "GPUShaderStage.h"
#include "GPUStorageTextureBindingLayout.h"
#include "GPUTextureBindingLayout.h"
#include <optional>
#include <pal/graphics/WebGPU/WebGPUBindGroupLayoutEntry.h>

namespace WebCore {

struct GPUBindGroupLayoutEntry {
    PAL::WebGPU::BindGroupLayoutEntry convertToBacking() const
    {
        return {
            binding,
            convertShaderStageFlagsToBacking(visibility),
            buffer ? std::optional { buffer->convertToBacking() } : std::nullopt,
            sampler ? std::optional { sampler->convertToBacking() } : std::nullopt,
            texture ? std::optional { texture->convertToBacking() } : std::nullopt,
            storageTexture ? std::optional { storageTexture->convertToBacking() } : std::nullopt,
            externalTexture ? std::optional { externalTexture->convertToBacking() } : std::nullopt,
        };
    }

    GPUIndex32 binding { 0 };
    GPUShaderStageFlags visibility { 0 };

    std::optional<GPUBufferBindingLayout> buffer;
    std::optional<GPUSamplerBindingLayout> sampler;
    std::optional<GPUTextureBindingLayout> texture;
    std::optional<GPUStorageTextureBindingLayout> storageTexture;
    std::optional<GPUExternalTextureBindingLayout> externalTexture;
};

}