зеркало из https://github.com/mozilla/gecko-dev.git
86 строки
3.0 KiB
C++
86 строки
3.0 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 "TextureClientSharedSurface.h"
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#include "GLContext.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/Logging.h" // for gfxDebug
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#include "mozilla/layers/ISurfaceAllocator.h"
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#include "mozilla/Unused.h"
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#include "nsThreadUtils.h"
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#include "SharedSurface.h"
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using namespace mozilla::gl;
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namespace mozilla {
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namespace layers {
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SharedSurfaceTextureData::SharedSurfaceTextureData(
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UniquePtr<gl::SharedSurface> surf)
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: mSurf(std::move(surf)) {}
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SharedSurfaceTextureData::~SharedSurfaceTextureData() = default;
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void SharedSurfaceTextureData::Deallocate(LayersIPCChannel*) {}
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void SharedSurfaceTextureData::FillInfo(TextureData::Info& aInfo) const {
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aInfo.size = mSurf->mSize;
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aInfo.format = gfx::SurfaceFormat::UNKNOWN;
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aInfo.hasIntermediateBuffer = false;
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aInfo.hasSynchronization = false;
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aInfo.supportsMoz2D = false;
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aInfo.canExposeMappedData = false;
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}
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bool SharedSurfaceTextureData::Serialize(SurfaceDescriptor& aOutDescriptor) {
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return mSurf->ToSurfaceDescriptor(&aOutDescriptor);
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}
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SharedSurfaceTextureClient::SharedSurfaceTextureClient(
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SharedSurfaceTextureData* aData, TextureFlags aFlags,
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LayersIPCChannel* aAllocator)
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: TextureClient(aData, aFlags, aAllocator) {
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mWorkaroundAnnoyingSharedSurfaceLifetimeIssues = true;
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}
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already_AddRefed<SharedSurfaceTextureClient> SharedSurfaceTextureClient::Create(
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UniquePtr<gl::SharedSurface> surf, gl::SurfaceFactory* factory,
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LayersIPCChannel* aAllocator, TextureFlags aFlags) {
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if (!surf) {
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return nullptr;
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}
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TextureFlags flags = aFlags | TextureFlags::RECYCLE | surf->GetTextureFlags();
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SharedSurfaceTextureData* data =
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new SharedSurfaceTextureData(std::move(surf));
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return MakeAndAddRef<SharedSurfaceTextureClient>(data, flags, aAllocator);
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}
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SharedSurfaceTextureClient::~SharedSurfaceTextureClient() {
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// XXX - Things break when using the proper destruction handshake with
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// SharedSurfaceTextureData because the TextureData outlives its gl
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// context. Having a strong reference to the gl context creates a cycle.
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// This needs to be fixed in a better way, though, because deleting
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// the TextureData here can race with the compositor and cause flashing.
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TextureData* data = mData;
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mData = nullptr;
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Destroy();
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if (data) {
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// Destroy mData right away without doing the proper deallocation handshake,
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// because SharedSurface depends on things that may not outlive the
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// texture's destructor so we can't wait until we know the compositor isn't
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// using the texture anymore. It goes without saying that this is really bad
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// and we should fix the bugs that block doing the right thing such as bug
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// 1224199 sooner rather than later.
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delete data;
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}
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}
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} // namespace layers
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} // namespace mozilla
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