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/*
* Copyright (C) 2020-2023 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. ``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
* 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(GPU_PROCESS)
#include "IPCEvent.h"
#include "PrepareBackingStoreBuffersData.h"
#include "RemoteImageBufferSetIdentifier.h"
#include "RenderingUpdateID.h"
#include "StreamConnectionWorkQueue.h"
#include "StreamMessageReceiver.h"
#include <WebCore/ImageBuffer.h>
#if ENABLE(RE_DYNAMIC_CONTENT_SCALING)
#include <WebCore/DynamicContentScalingDisplayList.h>
#endif
namespace WebKit {
class RemoteRenderingBackend;
class RemoteImageBufferSet : public IPC::StreamMessageReceiver {
public:
static Ref<RemoteImageBufferSet> create(RemoteImageBufferSetIdentifier, WebCore::RenderingResourceIdentifier displayListIdentifier, RemoteRenderingBackend&);
~RemoteImageBufferSet();
void stopListeningForIPC();
// Ensures frontBuffer is valid, either by swapping an existing back
// buffer, or allocating a new one.
void ensureBufferForDisplay(ImageBufferSetPrepareBufferForDisplayInputData&, SwapBuffersDisplayRequirement&, RenderingUpdateID);
// Initializes the contents of the new front buffer using the previous
// frames (if applicable), clips to the dirty region, and clears the pixels
// to be drawn (unless drawing will be opaque).
void prepareBufferForDisplay(const WebCore::Region& dirtyRegion, bool requiresClearedPixels);
bool makeBuffersVolatile(OptionSet<BufferInSetType> requestedBuffers, OptionSet<BufferInSetType>& volatileBuffers, bool forcePurge);
private:
RemoteImageBufferSet(RemoteImageBufferSetIdentifier, WebCore::RenderingResourceIdentifier, RemoteRenderingBackend&);
void startListeningForIPC();
IPC::StreamConnectionWorkQueue& workQueue() const;
// IPC::StreamMessageReceiver
void didReceiveStreamMessage(IPC::StreamServerConnection&, IPC::Decoder&) final;
// Messages
void updateConfiguration(const WebCore::FloatSize&, WebCore::RenderingMode, float resolutionScale, const WebCore::DestinationColorSpace&, WebCore::PixelFormat);
void setFlushSignal(IPC::Signal&&);
void flush();
#if ENABLE(RE_DYNAMIC_CONTENT_SCALING)
void dynamicContentScalingDisplayList(CompletionHandler<void(std::optional<WebCore::DynamicContentScalingDisplayList>&&)>&&);
#endif
bool isOpaque() const
{
return m_pixelFormat == WebCore::PixelFormat::RGB10 || m_pixelFormat == WebCore::PixelFormat::BGRX8;
}
RefPtr<RemoteRenderingBackend> m_backend;
RemoteImageBufferSetIdentifier m_identifier;
WebCore::RenderingResourceIdentifier m_displayListIdentifier;
RefPtr<WebCore::ImageBuffer> m_frontBuffer;
RefPtr<WebCore::ImageBuffer> m_backBuffer;
RefPtr<WebCore::ImageBuffer> m_secondaryBackBuffer;
RefPtr<WebCore::ImageBuffer> m_previousFrontBuffer;
WebCore::FloatSize m_logicalSize;
WebCore::RenderingMode m_renderingMode;
WebCore::RenderingPurpose m_purpose;
float m_resolutionScale { 1.0f };
WebCore::DestinationColorSpace m_colorSpace { WebCore::DestinationColorSpace::SRGB() };
WebCore::PixelFormat m_pixelFormat;
bool m_frontBufferIsCleared { false };
std::optional<WebCore::IntRect> m_previouslyPaintedRect;
std::optional<IPC::Signal> m_flushSignal;
};
} // namespace WebKit
#endif
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