Source/WebCore/Modules/WebGPU/GPUShaderStage.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
 * are met:
 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * 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 "GPUIntegralTypes.h"
#include <cstdint>
#include <pal/graphics/WebGPU/WebGPUShaderStage.h>
#include <wtf/RefCounted.h>

namespace WebCore {

using GPUShaderStageFlags = uint32_t;
class GPUShaderStage : public RefCounted<GPUShaderStage> {
public:
    static constexpr GPUFlagsConstant VERTEX   = 0x1;
    static constexpr GPUFlagsConstant FRAGMENT = 0x2;
    static constexpr GPUFlagsConstant COMPUTE  = 0x4;
};

inline PAL::WebGPU::ShaderStageFlags convertShaderStageFlagsToBacking(GPUShaderStageFlags shaderStageFlags)
{
    PAL::WebGPU::ShaderStageFlags result;
    if (shaderStageFlags & GPUShaderStage::VERTEX)
        result.add(PAL::WebGPU::ShaderStage::Vertex);
    if (shaderStageFlags & GPUShaderStage::FRAGMENT)
        result.add(PAL::WebGPU::ShaderStage::Fragment);
    if (shaderStageFlags & GPUShaderStage::COMPUTE)
        result.add(PAL::WebGPU::ShaderStage::Compute);
    return result;
}

}