WebGPUSwapChain.h   [plain text]

/*
 * Copyright (C) 2018 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
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    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
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#if ENABLE(WEBGPU)

#include "GPUBasedCanvasRenderingContext.h"
#include "GPUSwapChain.h"
#include "WebGPUDevice.h"
#include "WebGPUTexture.h"
#include "WebGPUTextureFormatEnum.h"

#include <wtf/RefPtr.h>

namespace WebCore {

class WebGPUSwapChain : public GPUBasedCanvasRenderingContext {
public:
    struct Descriptor {
        const WebGPUDevice* device = nullptr;
        // FIXME: More texture properties.
        WebGPUTextureFormatEnum format;
        unsigned long width;
        unsigned long height;
    };

    virtual ~WebGPUSwapChain() = 0;

    void configure(Descriptor&&);
    RefPtr<WebGPUTexture> getNextTexture();
    void present();

protected:
    WebGPUSwapChain(CanvasBase& canvas, RefPtr<GPUSwapChain>&& swapChain)
        : GPUBasedCanvasRenderingContext(canvas)
        , m_swapChain(WTFMove(swapChain))
    {
    }

    const char* activeDOMObjectName() const override { return "WebGPUSwapChain"; }
    PlatformLayer* platformLayer() const final { return m_swapChain->platformLayer(); };

private:
    // GPUBasedRenderingContext
    void reshape(int width, int height) final;
    void markLayerComposited() final;

    // ActiveDOMObject
    // FIXME: Stubs.
    bool hasPendingActivity() const override { return false; }
    void stop() override { }
    bool canSuspendForDocumentSuspension() const override { return false; }

    RefPtr<GPUSwapChain> m_swapChain;
};

} // namespace WebCore

#endif // ENABLE(WEBGPU)