Source/WebCore/Modules/WebGPU/GPUOrigin3DDict.h

/*
 * Copyright (C) 2021 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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#pragma once

#include "GPUIntegralTypes.h"
#include <pal/graphics/WebGPU/WebGPUOrigin3D.h>
#include <variant>
#include <wtf/Vector.h>

namespace WebCore {

struct GPUOrigin3DDict {
    PAL::WebGPU::Origin3DDict convertToBacking() const
    {
        return {
            x,
            y,
            z,
        };
    }

    GPUIntegerCoordinate x { 0 };
    GPUIntegerCoordinate y { 0 };
    GPUIntegerCoordinate z { 0 };
};

using GPUOrigin3D = std::variant<Vector<GPUIntegerCoordinate>, GPUOrigin3DDict>;

inline PAL::WebGPU::Origin3D convertToBacking(const GPUOrigin3D& origin3D)
{
    return WTF::switchOn(origin3D, [] (const Vector<GPUIntegerCoordinate>& vector) -> PAL::WebGPU::Origin3D {
        return vector;
    }, [] (const GPUOrigin3DDict& origin3D) -> PAL::WebGPU::Origin3D {
        return origin3D.convertToBacking();
    });
}

}