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/*
* Copyright (C) 2015 Igalia S.L.
*
* 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
#include "TextureMapperPlatformLayerProxy.h"
#if USE(COORDINATED_GRAPHICS)
#include "TextureMapperGLHeaders.h"
#include <wtf/Condition.h>
#include <wtf/Function.h>
#include <wtf/RunLoop.h>
#include <wtf/Vector.h>
#ifndef NDEBUG
#include <wtf/Threading.h>
#endif
namespace WebCore {
class TextureMapperPlatformLayerProxyGL final : public TextureMapperPlatformLayerProxy {
WTF_MAKE_FAST_ALLOCATED();
public:
TextureMapperPlatformLayerProxyGL();
virtual ~TextureMapperPlatformLayerProxyGL();
bool isGLBased() const override { return true; }
WEBCORE_EXPORT void activateOnCompositingThread(Compositor*, TextureMapperLayer*) override;
WEBCORE_EXPORT void invalidate() override;
WEBCORE_EXPORT void swapBuffer() override;
std::unique_ptr<TextureMapperPlatformLayerBuffer> getAvailableBuffer(const IntSize&, GLint internalFormat);
void pushNextBuffer(std::unique_ptr<TextureMapperPlatformLayerBuffer>&&);
void dropCurrentBufferWhilePreservingTexture(bool shouldWait = false);
bool scheduleUpdateOnCompositorThread(Function<void()>&&);
private:
void appendToUnusedBuffers(std::unique_ptr<TextureMapperPlatformLayerBuffer>);
void scheduleReleaseUnusedBuffers();
void releaseUnusedBuffersTimerFired();
std::unique_ptr<TextureMapperPlatformLayerBuffer> m_currentBuffer;
std::unique_ptr<TextureMapperPlatformLayerBuffer> m_pendingBuffer;
Lock m_wasBufferDroppedLock;
Condition m_wasBufferDroppedCondition;
bool m_wasBufferDropped WTF_GUARDED_BY_LOCK(m_wasBufferDroppedLock) { false };
Vector<std::unique_ptr<TextureMapperPlatformLayerBuffer>> m_usedBuffers;
std::unique_ptr<RunLoop::Timer> m_releaseUnusedBuffersTimer;
#if ASSERT_ENABLED
RefPtr<Thread> m_compositorThread;
#endif
void compositorThreadUpdateTimerFired();
std::unique_ptr<RunLoop::Timer> m_compositorThreadUpdateTimer;
Function<void()> m_compositorThreadUpdateFunction;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_TEXTUREMAPPER_PLATFORMLAYERPROXY(TextureMapperPlatformLayerProxyGL, isGLBased());
#endif // USE(COORDINATED_GRAPHICS)
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