I've noticed that using textured video on i915, I can see minor image
corruption that has not been present on true overlay video. Image corruption
can be mainly seen when displayed movie quickly alternates contrast scenes.
Image corruption looks like 3-4 pixels thick horizontal line drawn across
a part of the window. The line possess colors from the previous frame.
Sorry about the phenomenal bug spam, guys. Adding xorg-team@ to the QA contact so bugs don't get lost in future.
I think this "corruption" is caused by not synchronizing with vertical retrace as discussed in xorg list.
Does this issue still exist in the latest driver?
Please upload xorg.conf.
It is as XV is still not synchronized with vertical retrace.
Please upload xorg.conf then change the status to "NEW".
Created attachment 11716 [details]
*** This bug has been marked as a duplicate of bug 11311 ***
To clarify if this is really a duplicate of the bug group for which it was marked a duplicate, is it normal tearing with top portion of the window being the new frame and bottom portion the old frame, or is it a small piece of old frame within the window containing otherwise new frame?
It is true, though, that textured video isn't synced to vblank. Our hope is to get to an all-composited desktop so we can eliminate all tearing by syncing compositing to vblank, rather than hacking it in for individual pieces of rendering (GL apps, XV apps, no love for plain X apps).
> is it normal tearing with top portion of the window being
> the new frame and bottom portion the old frame
this is my case.
> Our hope is to get to an all-composited desktop
does this mean that users that do not use compositing (nor any composition manager) are out of luck?