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/*
* Copyright (C) 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
#include "RemoteLayerBackingStore.h"
namespace WebKit {
class RemoteLayerWithInProcessRenderingBackingStore : public RemoteLayerBackingStore {
public:
using RemoteLayerBackingStore::RemoteLayerBackingStore;
bool isRemoteLayerWithInProcessRenderingBackingStore() const final { return true; }
ProcessModel processModel() const final { return ProcessModel::InProcess; }
void prepareToDisplay() final;
void createContextAndPaintContents() final;
std::unique_ptr<ThreadSafeImageBufferSetFlusher> createFlusher(ThreadSafeImageBufferSetFlusher::FlushType) final;
void clearBackingStore() final;
bool setBufferVolatile(BufferType, bool forcePurge = false);
std::optional<ImageBufferBackendHandle> frontBufferHandle() const final;
#if ENABLE(RE_DYNAMIC_CONTENT_SCALING)
std::optional<ImageBufferBackendHandle> displayListHandle() const final;
#endif
void encodeBufferAndBackendInfos(IPC::Encoder&) const final;
void dump(WTF::TextStream&) const final;
private:
RefPtr<WebCore::ImageBuffer> allocateBuffer() const;
SwapBuffersDisplayRequirement prepareBuffers();
WebCore::SetNonVolatileResult swapToValidFrontBuffer();
void ensureFrontBuffer();
bool hasFrontBuffer() const final;
bool frontBufferMayBeVolatile() const final;
struct Buffer {
RefPtr<WebCore::ImageBuffer> imageBuffer;
bool isCleared { false };
explicit operator bool() const
{
return !!imageBuffer;
}
void discard();
};
// Returns true if it was able to fulfill the request. This can fail when trying to mark an in-use surface as volatile.
bool setBufferVolatile(Buffer&, bool forcePurge = false);
WebCore::SetNonVolatileResult setBufferNonVolatile(Buffer&);
WebCore::SetNonVolatileResult setFrontBufferNonVolatile();
Buffer m_frontBuffer;
Buffer m_backBuffer;
Buffer m_secondaryBackBuffer;
};
} // namespace WebKit
SPECIALIZE_TYPE_TRAITS_BEGIN(WebKit::RemoteLayerWithInProcessRenderingBackingStore)
static bool isType(const WebKit::RemoteLayerBackingStore& backingStore) { return backingStore.isRemoteLayerWithInProcessRenderingBackingStore(); }
SPECIALIZE_TYPE_TRAITS_END()
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