On 06.11.2014 19:18, Joonas Lahtinen wrote:
On to, 2014-11-06 at 18:12 +0900, Michel Dänzer wrote:
On 05.11.2014 20:14, Joonas Lahtinen wrote:
Modified not refer to DRI3, just uses the present extension to get rid
of the excess buffer invalidations.
AFAICT there's no fallback from your changes to the current behaviour if
the X server doesn't support the Present extension. There probably needs
to be such a fallback.
It gets rid of such nasty hack (the intel_viewport one), that I thought
there is no point making fallback. Because without this, the egl dri2
backend is fundamentally broken anyway.
Well, AFAICT your code uses Present extension functionality
unconditionally, without checking that the X server supports Present. I
can't see how that could possibly work on an X server which doesn't
support Present, but I think it would be better to keep it working at
least as badly as it does now in that case. :)
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Mesa and X developer
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