120447 2013-08-28 17:40:51 -0700 [Windows] Video inside a web page always falls back to non-hardware accelerated 2013-08-30 09:19:33 -0700 1 1 1 Unclassified WebKit Media 528+ (Nightly build) PC Windows 7 RESOLVED DUPLICATE 120448 P2 Major --- 1 bfulgham bfulgham oldest_to_newest 922274 0 bfulgham 2013-08-28 17:40:51 -0700 If you render a web page that embeds a video element, WebKit is turning off compositing mode forcing the system to render through the non-hardware accelerated path. This is happening because RenderLayerCompositor::computeCompositingRequirements initially decides to turn compositing off (since the media element is usually represented as a static image before playing). Once the user interacts with the media element (to scrub video or play the movie), RenderLayerCompositor::computeCompositingRequirements recognizes that it needs to begin compositing and switches to the correct mode. However, the media player element has already been constructed in "non-hardware accelerated mode", and continues its lifetime without using hardware acceleration. We need to do one of the following: 1. When the render tree switches to compositing mode, destroy/recreate the player -or- 2. Somehow attache the D3D device to the player after construction? 922993 1 bfulgham 2013-08-30 09:19:33 -0700 *** This bug has been marked as a duplicate of bug 120448 ***