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Store last submitted TextureId in PresentationData for getting front buffer snapshot. WebGPUParent::RecvQueueSubmit() stores the latest TextureId in the swap chain in PresentationData::LastSubmittedTextureId. To do so, it retrieves the OwnerId from ExternalTexture. Next, get PresentationData from OwnerId. If readback is required, it is performed synchronously. Its implementation is borrowed from WebGPUParent::RecvSwapChainPresent(). Differential Revision: https://phabricator.services.mozilla.com/D233473
73 lines
2.4 KiB
C++
73 lines
2.4 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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#ifndef _include_gfx_ipc_CanvasManagerParent_h__
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#define _include_gfx_ipc_CanvasManagerParent_h__
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#include "mozilla/gfx/PCanvasManagerParent.h"
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#include "mozilla/dom/ipc/IdType.h"
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#include "mozilla/StaticMonitor.h"
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#include "mozilla/UniquePtr.h"
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#include "nsHashtablesFwd.h"
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#include "nsTArray.h"
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namespace mozilla {
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namespace layers {
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class CanvasTranslator;
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class HostIPCAllocator;
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class SharedSurfacesHolder;
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class SurfaceDescriptor;
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} // namespace layers
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namespace gfx {
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class CanvasManagerParent final : public PCanvasManagerParent {
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CanvasManagerParent, override);
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static void Init(Endpoint<PCanvasManagerParent>&& aEndpoint,
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layers::SharedSurfacesHolder* aSharedSurfacesHolder,
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const dom::ContentParentId& aContentId);
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static void Shutdown();
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static void DisableRemoteCanvas();
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CanvasManagerParent(layers::SharedSurfacesHolder* aSharedSurfacesHolder,
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const dom::ContentParentId& aContentId);
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void Bind(Endpoint<PCanvasManagerParent>&& aEndpoint);
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void ActorDestroy(ActorDestroyReason aWhy) override;
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already_AddRefed<dom::PWebGLParent> AllocPWebGLParent();
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already_AddRefed<webgpu::PWebGPUParent> AllocPWebGPUParent();
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already_AddRefed<layers::PCanvasParent> AllocPCanvasParent();
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mozilla::ipc::IPCResult RecvInitialize(const uint32_t& aId);
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mozilla::ipc::IPCResult RecvGetSnapshot(
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const uint32_t& aManagerId, const int32_t& aProtocolId,
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const Maybe<RemoteTextureOwnerId>& aOwnerId,
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const Maybe<RawId>& aCommandEncoderId,
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webgl::FrontBufferSnapshotIpc* aResult);
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private:
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static void ShutdownInternal();
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static void DisableRemoteCanvasInternal();
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~CanvasManagerParent() override;
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RefPtr<layers::SharedSurfacesHolder> mSharedSurfacesHolder;
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const dom::ContentParentId mContentId;
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uint32_t mId = 0;
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using ManagerSet = nsTHashSet<RefPtr<CanvasManagerParent>>;
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static ManagerSet sManagers;
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};
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} // namespace gfx
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} // namespace mozilla
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#endif // _include_gfx_ipc_CanvasManagerParent_h__
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