IssueTracker

When seeking in a paused video

• under wayland
• with vulkan
• with vaapi

chromium seems to not apply damage tracking correctly. The attached video demonstrates the issue.

The issue does not happen while the video is playing.

Curiously, the issue also stops happening as soon as you interact with any UI element outside of the video area.

Without having looked at the code, the flickering looks as if:

• chromium uses a number (2 or 3) of images for its wayland swapchain
• when the video buffer changes, it copies its contents to the next free image in the wayland swapchain
• but it forgets to copy this area to the other elements of the swapchain or some such
• therefore the video area flickers when chromium cycles through its swapchain