Add m-esr52 at 52.6.0

1 files changed, 86 insertions, 0 deletions

diff --git a/gfx/vr/ipc/VRLayerChild.cpp b/gfx/vr/ipc/VRLayerChild.cpp
new file mode 100644
index 000000000..cffe9c1f1
--- /dev/null
+++ b/gfx/vr/ipc/VRLayerChild.cpp
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "VRLayerChild.h"
+#include "GLScreenBuffer.h"
+#include "mozilla/layers/TextureClientSharedSurface.h"
+#include "SharedSurface.h"                // for SharedSurface
+#include "SharedSurfaceGL.h"              // for SharedSurface
+#include "mozilla/layers/LayersMessages.h" // for TimedTexture
+#include "nsICanvasRenderingContextInternal.h"
+#include "mozilla/dom/HTMLCanvasElement.h"
+
+namespace mozilla {
+namespace gfx {
+
+VRLayerChild::VRLayerChild(uint32_t aVRDisplayID, VRManagerChild* aVRManagerChild)
+  : mVRDisplayID(aVRDisplayID)
+  , mCanvasElement(nullptr)
+  , mShSurfClient(nullptr)
+  , mFront(nullptr)
+{
+  MOZ_COUNT_CTOR(VRLayerChild);
+}
+
+VRLayerChild::~VRLayerChild()
+{
+  if (mCanvasElement) {
+    mCanvasElement->StopVRPresentation();
+  }
+
+  ClearSurfaces();
+
+  MOZ_COUNT_DTOR(VRLayerChild);
+}
+
+void
+VRLayerChild::Initialize(dom::HTMLCanvasElement* aCanvasElement)
+{
+  MOZ_ASSERT(aCanvasElement);
+  mCanvasElement = aCanvasElement;
+  mCanvasElement->StartVRPresentation();
+
+  VRManagerChild *vrmc = VRManagerChild::Get();
+  vrmc->RunFrameRequestCallbacks();
+}
+
+void
+VRLayerChild::SubmitFrame()
+{
+  if (!mCanvasElement) {
+    return;
+  }
+
+  mShSurfClient = mCanvasElement->GetVRFrame();
+  if (!mShSurfClient) {
+    return;
+  }
+
+  gl::SharedSurface* surf = mShSurfClient->Surf();
+  if (surf->mType == gl::SharedSurfaceType::Basic) {
+    gfxCriticalError() << "SharedSurfaceType::Basic not supported for WebVR";
+    return;
+  }
+
+  mFront = mShSurfClient;
+  mShSurfClient = nullptr;
+
+  mFront->SetAddedToCompositableClient();
+  VRManagerChild* vrmc = VRManagerChild::Get();
+  mFront->SyncWithObject(vrmc->GetSyncObject());
+  MOZ_ALWAYS_TRUE(mFront->InitIPDLActor(vrmc));
+
+  SendSubmitFrame(mFront->GetIPDLActor());
+}
+
+void
+VRLayerChild::ClearSurfaces()
+{
+  mFront = nullptr;
+  mShSurfClient = nullptr;
+}
+
+} // namespace gfx
+} // namespace mozilla