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/*
* Copyright (C) 2022-2023 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. 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 "RemotePresentationContext.h"
#if ENABLE(GPU_PROCESS)
#include "RemotePresentationContextMessages.h"
#include "RemoteTexture.h"
#include "StreamServerConnection.h"
#include "WebGPUObjectHeap.h"
#include <WebCore/WebGPUCanvasConfiguration.h>
#include <WebCore/WebGPUPresentationContext.h>
#include <WebCore/WebGPUTexture.h>
namespace WebKit {
RemotePresentationContext::RemotePresentationContext(WebCore::WebGPU::PresentationContext& presentationContext, WebGPU::ObjectHeap& objectHeap, Ref<IPC::StreamServerConnection>&& streamConnection, WebGPUIdentifier identifier)
: m_backing(presentationContext)
, m_objectHeap(objectHeap)
, m_streamConnection(WTFMove(streamConnection))
, m_identifier(identifier)
{
m_streamConnection->startReceivingMessages(*this, Messages::RemotePresentationContext::messageReceiverName(), m_identifier.toUInt64());
}
RemotePresentationContext::~RemotePresentationContext() = default;
void RemotePresentationContext::stopListeningForIPC()
{
m_streamConnection->stopReceivingMessages(Messages::RemotePresentationContext::messageReceiverName(), m_identifier.toUInt64());
}
void RemotePresentationContext::configure(const WebGPU::CanvasConfiguration& canvasConfiguration)
{
auto convertedConfiguration = m_objectHeap.convertFromBacking(canvasConfiguration);
ASSERT(convertedConfiguration);
if (!convertedConfiguration)
return;
m_backing->configure(*convertedConfiguration);
}
void RemotePresentationContext::unconfigure()
{
m_backing->unconfigure();
}
void RemotePresentationContext::getCurrentTexture(WebGPUIdentifier identifier)
{
auto texture = m_backing->getCurrentTexture();
// We're creating a new resource here, because we don't want the GetCurrentTexture message to be sync.
// If the message is async, then the WebGPUIdentifier goes from the Web process to the GPU Process, which
// means the Web Process is going to proceed and interact with the texture as-if it has this identifier.
// So we need to make sure the texture has this identifier.
// Maybe one day we could add the same texture into the ObjectHeap multiple times under multiple identifiers,
// but for now let's just create a new RemoteTexture object with the expected identifier, just for simplicity.
// The Web Process should already be caching these current textures internally, so it's unlikely that we'll
// actually run into a problem here.
// FIXME: Handle the situation where texture is nullptr.
auto remoteTexture = RemoteTexture::create(*texture, m_objectHeap, m_streamConnection.copyRef(), identifier);
m_objectHeap.addObject(identifier, remoteTexture);
}
} // namespace WebKit
#endif // ENABLE(GPU_PROCESS)
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