[PATCH xserver 3/6] modesetting: add DRI2 page flip support
Qiang.Yu at amd.com
Fri Aug 19 07:48:30 UTC 2016
>>> + /* Post damage on the front buffer so that listeners, such
>>> + * as DisplayLink know take a copy and shove it over the USB.
>>> + * also for sw cursors.
>>> + */
>> SW cursors cannot work correctly with page flipping. For that reason,
>> xf86-video-ati/amdgpu disable page flipping while there's an SW cursor.
> [yuq] why? Is the problem in kernel or xserver?
The latter, due to the way SW cursor works. There's a fundamental (and
likely unfixable) conflict between the SW cursor and page flipping concepts.
[yuq] So the same problem for modesetting? I see no checking SW cursor
in original present page flip.
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