summaryrefslogtreecommitdiffstats
path: root/gfx/vr/VRDisplayPresentation.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'gfx/vr/VRDisplayPresentation.cpp')
-rw-r--r--gfx/vr/VRDisplayPresentation.cpp112
1 files changed, 112 insertions, 0 deletions
diff --git a/gfx/vr/VRDisplayPresentation.cpp b/gfx/vr/VRDisplayPresentation.cpp
new file mode 100644
index 000000000..ba528ae7c
--- /dev/null
+++ b/gfx/vr/VRDisplayPresentation.cpp
@@ -0,0 +1,112 @@
+/* -*- Mode: C++; tab-width: 20; 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 "VRDisplayPresentation.h"
+
+#include "mozilla/Unused.h"
+#include "VRDisplayClient.h"
+#include "VRLayerChild.h"
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+
+VRDisplayPresentation::VRDisplayPresentation(VRDisplayClient *aDisplayClient,
+ const nsTArray<mozilla::dom::VRLayer>& aLayers)
+ : mDisplayClient(aDisplayClient)
+ , mDOMLayers(aLayers)
+{
+ CreateLayers();
+}
+
+void
+VRDisplayPresentation::CreateLayers()
+{
+ if (mLayers.Length()) {
+ return;
+ }
+
+ for (dom::VRLayer& layer : mDOMLayers) {
+ dom::HTMLCanvasElement* canvasElement = layer.mSource;
+ if (!canvasElement) {
+ /// XXX In the future we will support WebVR in WebWorkers here
+ continue;
+ }
+
+ Rect leftBounds(0.0, 0.0, 0.5, 1.0);
+ if (layer.mLeftBounds.Length() == 4) {
+ leftBounds.x = layer.mLeftBounds[0];
+ leftBounds.y = layer.mLeftBounds[1];
+ leftBounds.width = layer.mLeftBounds[2];
+ leftBounds.height = layer.mLeftBounds[3];
+ } else if (layer.mLeftBounds.Length() != 0) {
+ /**
+ * We ignore layers with an incorrect number of values.
+ * In the future, VRDisplay.requestPresent may throw in
+ * this case. See https://github.com/w3c/webvr/issues/71
+ */
+ continue;
+ }
+
+ Rect rightBounds(0.5, 0.0, 0.5, 1.0);
+ if (layer.mRightBounds.Length() == 4) {
+ rightBounds.x = layer.mRightBounds[0];
+ rightBounds.y = layer.mRightBounds[1];
+ rightBounds.width = layer.mRightBounds[2];
+ rightBounds.height = layer.mRightBounds[3];
+ } else if (layer.mRightBounds.Length() != 0) {
+ /**
+ * We ignore layers with an incorrect number of values.
+ * In the future, VRDisplay.requestPresent may throw in
+ * this case. See https://github.com/w3c/webvr/issues/71
+ */
+ continue;
+ }
+
+ VRManagerChild *manager = VRManagerChild::Get();
+ if (!manager) {
+ NS_WARNING("VRManagerChild::Get returned null!");
+ continue;
+ }
+
+ RefPtr<VRLayerChild> vrLayer = static_cast<VRLayerChild*>(manager->CreateVRLayer(mDisplayClient->GetDisplayInfo().GetDisplayID(), leftBounds, rightBounds));
+ if (!vrLayer) {
+ NS_WARNING("CreateVRLayer returned null!");
+ continue;
+ }
+
+ vrLayer->Initialize(canvasElement);
+
+ mLayers.AppendElement(vrLayer);
+ }
+}
+
+void
+VRDisplayPresentation::DestroyLayers()
+{
+ for (VRLayerChild* layer : mLayers) {
+ Unused << layer->SendDestroy();
+ }
+ mLayers.Clear();
+}
+
+void
+VRDisplayPresentation::GetDOMLayers(nsTArray<dom::VRLayer>& result)
+{
+ result = mDOMLayers;
+}
+
+VRDisplayPresentation::~VRDisplayPresentation()
+{
+ DestroyLayers();
+ mDisplayClient->PresentationDestroyed();
+}
+
+void VRDisplayPresentation::SubmitFrame()
+{
+ for (VRLayerChild *layer : mLayers) {
+ layer->SubmitFrame();
+ break; // Currently only one layer supported, submit only the first
+ }
+}