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/*
* Copyright (C) 2020 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.
*/
#include "config.h"
#include "RemoteGraphicsContextGL.h"
#if ENABLE(GPU_PROCESS) && ENABLE(WEBGL) && PLATFORM(COCOA)
#include "GPUConnectionToWebProcess.h"
#include <WebCore/GraphicsContextGLIOSurfaceSwapChain.h>
#include <wtf/MachSendRight.h>
namespace WebKit {
using namespace WebCore;
namespace {
class RemoteGraphicsContextGLCocoa final : public RemoteGraphicsContextGL {
public:
RemoteGraphicsContextGLCocoa(GPUConnectionToWebProcess&, GraphicsContextGLIdentifier, RemoteRenderingBackend&, IPC::StreamConnectionBuffer&&);
~RemoteGraphicsContextGLCocoa() final = default;
// RemoteGraphicsContextGL overrides.
void platformWorkQueueInitialize(WebCore::GraphicsContextGLAttributes&&) final;
void prepareForDisplay(CompletionHandler<void(WTF::MachSendRight&&)>&&) final;
private:
WebCore::GraphicsContextGLIOSurfaceSwapChain m_swapChain WTF_GUARDED_BY_LOCK(m_streamThread);
#if HAVE(IOSURFACE_SET_OWNERSHIP_IDENTITY)
task_id_token_t m_webProcessIdentityToken;
#endif
};
}
Ref<RemoteGraphicsContextGL> RemoteGraphicsContextGL::create(GPUConnectionToWebProcess& gpuConnectionToWebProcess, GraphicsContextGLAttributes&& attributes, GraphicsContextGLIdentifier graphicsContextGLIdentifier, RemoteRenderingBackend& renderingBackend, IPC::StreamConnectionBuffer&& stream)
{
auto instance = adoptRef(*new RemoteGraphicsContextGLCocoa(gpuConnectionToWebProcess, graphicsContextGLIdentifier, renderingBackend, WTFMove(stream)));
instance->initialize(WTFMove(attributes));
return instance;
}
RemoteGraphicsContextGLCocoa::RemoteGraphicsContextGLCocoa(GPUConnectionToWebProcess& gpuConnectionToWebProcess, GraphicsContextGLIdentifier graphicsContextGLIdentifier, RemoteRenderingBackend& renderingBackend, IPC::StreamConnectionBuffer&& stream)
: RemoteGraphicsContextGL(gpuConnectionToWebProcess, graphicsContextGLIdentifier, renderingBackend, WTFMove(stream))
#if HAVE(IOSURFACE_SET_OWNERSHIP_IDENTITY)
, m_webProcessIdentityToken(gpuConnectionToWebProcess.webProcessIdentityToken())
#endif
{
}
void RemoteGraphicsContextGLCocoa::platformWorkQueueInitialize(WebCore::GraphicsContextGLAttributes&& attributes)
{
assertIsCurrent(m_streamThread);
m_context = GraphicsContextGLOpenGL::createForGPUProcess(WTFMove(attributes), &m_swapChain);
}
void RemoteGraphicsContextGLCocoa::prepareForDisplay(CompletionHandler<void(WTF::MachSendRight&&)>&& completionHandler)
{
assertIsCurrent(m_streamThread);
m_context->prepareForDisplay();
MachSendRight sendRight;
if (auto* surface = m_swapChain.displayBuffer().surface.get()) {
#if HAVE(IOSURFACE_SET_OWNERSHIP_IDENTITY)
// Mark the IOSurface as being owned by the WebProcess even though it was constructed by the GPUProcess so that Jetsam knows which process to kill.
surface->setOwnershipIdentity(m_webProcessIdentityToken);
#endif
sendRight = surface->createSendRight();
}
completionHandler(WTFMove(sendRight));
}
}
#endif
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