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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 "BufferIdentifierSet.h"
#include "MarkSurfacesAsVolatileRequestIdentifier.h"
#include "PrepareBackingStoreBuffersData.h"
#include "RemoteDisplayListRecorderProxy.h"
#include "RemoteImageBufferSetConfiguration.h"
#include "RemoteImageBufferSetIdentifier.h"
#include "RenderingUpdateID.h"
#include "WorkQueueMessageReceiver.h"
#include <wtf/Identified.h>
#include <wtf/Lock.h>
#include <wtf/TZoneMallocInlines.h>
#if ENABLE(GPU_PROCESS)
namespace IPC {
class Connection;
class Decoder;
class StreamClientConnection;
}
namespace WebKit {
class RemoteImageBufferSetProxyFlushFence;
struct BufferSetBackendHandle;
// FIXME: We should have a generic 'ImageBufferSet' class that contains
// the code that isn't specific to being remote, and this helper belongs
// there.
class ThreadSafeImageBufferSetFlusher {
WTF_MAKE_TZONE_ALLOCATED_INLINE(ThreadSafeImageBufferSetFlusher);
WTF_MAKE_NONCOPYABLE(ThreadSafeImageBufferSetFlusher);
public:
enum class FlushType {
BackendHandlesOnly,
BackendHandlesAndDrawing,
};
ThreadSafeImageBufferSetFlusher() = default;
virtual ~ThreadSafeImageBufferSetFlusher() = default;
// Returns true if flush succeeded, false if it failed.
virtual bool flushAndCollectHandles(HashMap<RemoteImageBufferSetIdentifier, std::unique_ptr<BufferSetBackendHandle>>&) = 0;
};
// A RemoteImageBufferSet is an ImageBufferSet, where the actual ImageBuffers are owned by the GPU process.
// To draw a frame, the consumer allocates a new RemoteDisplayListRecorderProxy and
// asks the RemoteImageBufferSet set to map it to an appropriate new front
// buffer (either by picking one of the back buffers, or by allocating a new
// one). It then copies across the pixels from the previous front buffer,
// clips to the dirty region and clears that region.
// Usage is done through RemoteRenderingBackendProxy::prepareImageBufferSetsForDisplay,
// so that a Vector of RemoteImageBufferSets can be used with a single
// IPC call.
// FIXME: It would be nice if this could actually be a subclass of ImageBufferSet, but
// probably can't while it uses batching for prepare and volatility.
class RemoteImageBufferSetProxy : public IPC::WorkQueueMessageReceiver<WTF::DestructionThread::Any>, public Identified<RemoteImageBufferSetIdentifier> {
public:
RemoteImageBufferSetProxy(RemoteRenderingBackendProxy&);
~RemoteImageBufferSetProxy();
OptionSet<BufferInSetType> requestedVolatility() { return m_requestedVolatility; }
OptionSet<BufferInSetType> confirmedVolatility() { return m_confirmedVolatility; }
void clearVolatility();
void addRequestedVolatility(OptionSet<BufferInSetType> request);
void setConfirmedVolatility(OptionSet<BufferInSetType> types);
#if PLATFORM(COCOA)
void didPrepareForDisplay(ImageBufferSetPrepareBufferForDisplayOutputData, RenderingUpdateID);
#endif
WebCore::GraphicsContext& context();
bool hasContext() const { return !!m_displayListRecorder; }
WebCore::RenderingResourceIdentifier displayListResourceIdentifier() const { return m_displayListIdentifier; }
std::unique_ptr<ThreadSafeImageBufferSetFlusher> flushFrontBufferAsync(ThreadSafeImageBufferSetFlusher::FlushType);
void setConfiguration(RemoteImageBufferSetConfiguration&&);
void willPrepareForDisplay();
void remoteBufferSetWasDestroyed();
#if ENABLE(RE_DYNAMIC_CONTENT_SCALING)
std::optional<WebCore::DynamicContentScalingDisplayList> dynamicContentScalingDisplayList();
#endif
unsigned generation() const { return m_generation; }
void didReceiveMessage(IPC::Connection&, IPC::Decoder&);
void close();
private:
template<typename T> auto send(T&& message);
template<typename T> auto sendSync(T&& message);
RefPtr<IPC::StreamClientConnection> connection() const;
void didBecomeUnresponsive() const;
WeakPtr<RemoteRenderingBackendProxy> m_remoteRenderingBackendProxy;
WebCore::RenderingResourceIdentifier m_displayListIdentifier;
std::unique_ptr<RemoteDisplayListRecorderProxy> m_displayListRecorder;
OptionSet<BufferInSetType> m_requestedVolatility;
OptionSet<BufferInSetType> m_confirmedVolatility;
RemoteImageBufferSetConfiguration m_configuration;
unsigned m_generation { 0 };
bool m_remoteNeedsConfigurationUpdate { false };
Lock m_lock;
RefPtr<RemoteImageBufferSetProxyFlushFence> m_pendingFlush WTF_GUARDED_BY_LOCK(m_lock);
RefPtr<IPC::StreamClientConnection> m_streamConnection WTF_GUARDED_BY_LOCK(m_lock);
bool m_prepareForDisplayIsPending WTF_GUARDED_BY_LOCK(m_lock) { false };
bool m_closed WTF_GUARDED_BY_LOCK(m_lock) { false };
};
inline TextStream& operator<<(TextStream& ts, RemoteImageBufferSetProxy& bufferSet)
{
ts << bufferSet.identifier();
return ts;
}
} // namespace WebKit
#endif // ENABLE(GPU_PROCESS)
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