Chad Versace <chad.vers...@linux.intel.com> writes: > On 08/14/2012 11:09 AM, Ian Romanick wrote: >> On 08/13/2012 08:43 AM, Eric Anholt wrote: >>> Ian Romanick <i...@freedesktop.org> writes: >>>> The tail should not wag the dog. If the application requests such a >>>> config, we should not page flip. There are cases where the copy is >>>> preferable because it leaves the backbuffer intact. >>> >>> Well, that would require extra work in dri2 to use the older copyregion >>> interface if the bit is set, and then you lose correct vblank syncing. >>> Unless you're planning on new dri2 protocol. >>> >>> Or we could just remove this interface that, as far as I know, no app >>> uses. >> >> I'm pretty sure both Firefox and Blender want this for their UI elements. >> Firefox might not use it anymore, but I'm sure Blender does. Blender also >> won't >> care about vsync. > > I just discussed this with GL developers from Firefox (karl in > #g...@irc.mozilla.org) and Blender (Psy-Fi in #blendercoders@freenode). They > confirmed that neither project uses or has any intention to use > GLX_SWAP_COPY_OML. They also gently complained that they wished GL drivers > would > stop advertising broken features. > > Eric, Ian, now that Ian's issue is resolved, I'm now waiting on one of your > r-b > to commit this patch.
Reviewed-by: Eric Anholt <e...@anholt.net>
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