cc: Video layers without a frame should not occlude

cc/layers/video_layer_impl_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/video_layer_impl.h"
 
 #include "cc/layers/video_frame_provider_client_impl.h"
 #include "cc/output/context_provider.h"
 #include "cc/output/output_surface.h"
 #include "cc/quads/draw_quad.h"
@@ skipping 66 matching lines @@
 
     size_t partially_occluded_count = 0;
     LayerTestCommon::VerifyQuadsAreOccluded(
         impl.quad_list(), occluded, &partially_occluded_count);
     // The layer outputs one quad, which is partially occluded.
     EXPECT_EQ(1u, impl.quad_list().size());
     EXPECT_EQ(1u, partially_occluded_count);
   }
 }
 
+TEST(VideoLayerImplTest, OccludesOtherLayers) {
+  gfx::Size layer_size(1000, 1000);
+  gfx::Rect visible(layer_size);
+
+  LayerTestCommon::LayerImplTest impl;
+  impl.host_impl()->SetViewportSize(layer_size);
+  DebugSetImplThreadAndMainThreadBlocked(impl.proxy());
+  auto active_tree = impl.host_impl()->active_tree();
+
+  // Create a video layer with no frame on top of another layer.
+  scoped_ptr<LayerImpl> layer_impl = LayerImpl::Create(active_tree, 3);
+  layer_impl->SetHasRenderSurface(true);
+  layer_impl->SetBounds(layer_size);
+  layer_impl->SetContentBounds(layer_size);
+  layer_impl->SetDrawsContent(true);
+  const auto& draw_properties = layer_impl->draw_properties();
+
+  FakeVideoFrameProvider provider;
+  scoped_ptr<VideoLayerImpl> video_layer_impl = VideoLayerImpl::Create(
+      active_tree, 4, &provider, media::VIDEO_ROTATION_0);
+  video_layer_impl->SetBounds(layer_size);
+  video_layer_impl->SetContentBounds(layer_size);
+  video_layer_impl->SetDrawsContent(true);
+  video_layer_impl->SetContentsOpaque(true);
+
+  layer_impl->AddChild(video_layer_impl.Pass());
+  active_tree->SetRootLayer(layer_impl.Pass());
+
+  active_tree->UpdateDrawProperties(false);
+
+  // We don't have a frame yet, so the video doesn't occlude the layer below it.
+  EXPECT_FALSE(draw_properties.occlusion_in_content_space.IsOccluded(visible));
+
+  scoped_refptr<media::VideoFrame> video_frame = media::VideoFrame::CreateFrame(
+      media::VideoFrame::YV12, gfx::Size(10, 10), gfx::Rect(10, 10),
+      gfx::Size(10, 10), base::TimeDelta());
+  provider.set_frame(video_frame);
+  active_tree->set_needs_update_draw_properties();
+  active_tree->UpdateDrawProperties(false);
+
+  // We have a frame now, so the video occludes the layer below it.
+  EXPECT_TRUE(draw_properties.occlusion_in_content_space.IsOccluded(visible));
+}
+
 TEST(VideoLayerImplTest, DidBecomeActiveShouldSetActiveVideoLayer) {
   LayerTestCommon::LayerImplTest impl;
   DebugSetImplThreadAndMainThreadBlocked(impl.proxy());
 
   FakeVideoFrameProvider provider;
   VideoLayerImpl* video_layer_impl =
       impl.AddChildToRoot<VideoLayerImpl>(&provider, media::VIDEO_ROTATION_0);
 
   VideoFrameProviderClientImpl* client =
       static_cast<VideoFrameProviderClientImpl*>(provider.client());
@@ skipping 143 matching lines @@
   gfx::Point3F p1(0, impl.quad_list().front()->rect.height(), 0);
   gfx::Point3F p2(impl.quad_list().front()->rect.width(), 0, 0);
   impl.quad_list().front()->quadTransform().TransformPoint(&p1);
   impl.quad_list().front()->quadTransform().TransformPoint(&p2);
   EXPECT_EQ(gfx::Point3F(100, 50, 0), p1);
   EXPECT_EQ(gfx::Point3F(0, 0, 0), p2);
 }
 
 }  // namespace
 }  // namespace cc