222674 2021-03-03 11:41:41 -0800 PaintFrameForMedia may be processed before the target MediaPlayer has been received in the GPU process 2021-04-30 15:33:02 -0700 1 1 1 Unclassified WebKit WebKit2 WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=222633 InRadar P2 Normal --- 1 wenson_hsieh peng.liu6 peng.liu6 webkit-bug-importer oldest_to_newest 1735417 0 wenson_hsieh 2021-03-03 11:41:41 -0800 This may cause `PaintFrameForMedia` to (incorrectly) be a no-op. 1735418 1 webkit-bug-importer 2021-03-03 11:42:08 -0800 <rdar://problem/74995642> 1740175 2 wenson_hsieh 2021-03-16 13:59:39 -0700 (Some more info…) PaintFrameForMedia is a display list item that grabs the MediaPlayer corresponding to its identifier, and paints the current frame of the MediaPlayer into the destination image buffer. However, there's currently no mechanism to ensure that we've created the MediaPlayer in the GPU Process at the time when the item (PaintFrameForMedia) is being applied. For other similar drawing items (such as items for drawing fonts or images), we'll notice that we're missing the cached resource, bail from the main display list processing loop, and resume processing when we've received the resource. However, MediaPlayer currently does not integrate with this mechanism, so we end up treating the item as a no-op in the case where we haven't received the MediaPlayer yet. 1755838 3 peng.liu6 2021-04-30 15:33:02 -0700 *** Bug 222633 has been marked as a duplicate of this bug. ***