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0155e30e96
This patch ensures that, following a GPU process crash, we re-initialize the compositor and resume painting on Android. nsWindow::GetWindowRenderer() is made to always reinitialize the window renderer if there is none, like on other platforms. We therefore no longer need to track whether webrender is being disabled, as this is no longer a special case. Previously we started the compositor as initially paused in nsBaseWidget::CreateCompositorSession only if the widget did not yet have a surface. Now we must unconditionally (re)start it as initially paused, as even though the widget in the parent process may have a surface, we will not have been able to send it to the GPU process yet. We will send the surface to the compositor once control flow returns to nsWindow::CreateLayerManager, where we will also now resume the compositor if required. Finally, we must ensure that we manually trigger a paint, both in the parent and content processes. On other platforms this occurs automatically following a GPU process loss through various refresh driver events. On Android, however, nothing causes the refresh driver to paint by itself, and we cannot receive input without first initializing our APZ controllers, which does not happen until the compositor receives a display list. We therefore must manually schedule a paint. We do so from nsWindow::NotifyCompositorSessionLost for the parent process, and BrowserChild::ReinitRendering for content processes. Differential Revision: https://phabricator.services.mozilla.com/D131232
37 lines
1.3 KiB
C++
37 lines
1.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CompositorSession.h"
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#include "base/process_util.h"
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#include "GPUChild.h"
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#include "mozilla/gfx/Logging.h"
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#include "mozilla/gfx/GPUProcessHost.h"
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#include "mozilla/layers/CompositorBridgeChild.h"
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#include "mozilla/layers/CompositorBridgeParent.h"
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namespace mozilla {
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namespace layers {
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using namespace gfx;
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using namespace widget;
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CompositorSession::CompositorSession(nsBaseWidget* aWidget,
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CompositorWidgetDelegate* aDelegate,
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CompositorBridgeChild* aChild,
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const LayersId& aRootLayerTreeId)
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: mWidget(aWidget),
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mCompositorWidgetDelegate(aDelegate),
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mCompositorBridgeChild(aChild),
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mRootLayerTreeId(aRootLayerTreeId) {}
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CompositorSession::~CompositorSession() = default;
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CompositorBridgeChild* CompositorSession::GetCompositorBridgeChild() {
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return mCompositorBridgeChild;
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}
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} // namespace layers
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} // namespace mozilla
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