Does the intel-driver not accalerate bitmask blits?

Eric Anholt eric at anholt.net
Wed Jun 13 08:44:54 PDT 2007


On Wed, 2007-06-13 at 09:07 +0200, Clemens Eisserer wrote:
> Hello Eric,
> 
> > Correct.  If you're attempting to composite through a mask, use an a8
> > mask.
> Wow that is really poor - it does not even accalerate such basic
> operations. Sadly I can't control which type is used for masking :-/
> Is this a hw limitation?

Yes.  To my knowledge, no hardware I've worked on in the last several
years, whether it's ATI or Intel or others, supports compositing through
an A1 mask larger than some trivial minimum.

-- 
Eric Anholt                             anholt at FreeBSD.org
eric at anholt.net                         eric.anholt at intel.com

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