зеркало из https://github.com/mozilla/gecko-dev.git
128 строки
2.7 KiB
C++
128 строки
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 "VRLayerChild.h"
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#include "GLScreenBuffer.h"
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#include "mozilla/layers/TextureClientSharedSurface.h"
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#include "SharedSurface.h" // for SharedSurface
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#include "SharedSurfaceGL.h" // for SharedSurface
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#include "mozilla/layers/LayersMessages.h" // for TimedTexture
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#include "nsICanvasRenderingContextInternal.h"
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#include "mozilla/dom/HTMLCanvasElement.h"
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namespace mozilla {
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namespace gfx {
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VRLayerChild::VRLayerChild()
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: mCanvasElement(nullptr)
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, mShSurfClient(nullptr)
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, mFront(nullptr)
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, mIPCOpen(false)
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{
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MOZ_COUNT_CTOR(VRLayerChild);
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}
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VRLayerChild::~VRLayerChild()
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{
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if (mCanvasElement) {
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mCanvasElement->StopVRPresentation();
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}
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ClearSurfaces();
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MOZ_COUNT_DTOR(VRLayerChild);
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}
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void
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VRLayerChild::Initialize(dom::HTMLCanvasElement* aCanvasElement)
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{
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MOZ_ASSERT(aCanvasElement);
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mCanvasElement = aCanvasElement;
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mCanvasElement->StartVRPresentation();
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VRManagerChild *vrmc = VRManagerChild::Get();
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vrmc->RunFrameRequestCallbacks();
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}
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void
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VRLayerChild::SubmitFrame(uint64_t aFrameId)
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{
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if (!mCanvasElement) {
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return;
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}
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mShSurfClient = mCanvasElement->GetVRFrame();
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if (!mShSurfClient) {
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return;
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}
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gl::SharedSurface* surf = mShSurfClient->Surf();
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if (surf->mType == gl::SharedSurfaceType::Basic) {
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gfxCriticalError() << "SharedSurfaceType::Basic not supported for WebVR";
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return;
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}
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mFront = mShSurfClient;
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mShSurfClient = nullptr;
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mFront->SetAddedToCompositableClient();
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VRManagerChild* vrmc = VRManagerChild::Get();
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mFront->SyncWithObject(vrmc->GetSyncObject());
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MOZ_ALWAYS_TRUE(mFront->InitIPDLActor(vrmc));
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SendSubmitFrame(mFront->GetIPDLActor(), aFrameId);
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}
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bool
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VRLayerChild::IsIPCOpen()
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{
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return mIPCOpen;
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}
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void
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VRLayerChild::ClearSurfaces()
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{
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mFront = nullptr;
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mShSurfClient = nullptr;
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}
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void
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VRLayerChild::ActorDestroy(ActorDestroyReason aWhy)
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{
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mIPCOpen = false;
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}
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// static
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PVRLayerChild*
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VRLayerChild::CreateIPDLActor()
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{
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VRLayerChild* c = new VRLayerChild();
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c->AddIPDLReference();
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return c;
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}
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// static
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bool
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VRLayerChild::DestroyIPDLActor(PVRLayerChild* actor)
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{
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static_cast<VRLayerChild*>(actor)->ReleaseIPDLReference();
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return true;
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}
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void
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VRLayerChild::AddIPDLReference() {
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MOZ_ASSERT(mIPCOpen == false);
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mIPCOpen = true;
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AddRef();
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}
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void
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VRLayerChild::ReleaseIPDLReference() {
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MOZ_ASSERT(mIPCOpen == false);
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Release();
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}
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} // namespace gfx
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} // namespace mozilla
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