R128 Scaling.

Michel Dänzer michel at daenzer.net
Wed Apr 17 21:54:56 EST 2002

On Wed, 2002-04-17 at 07:44, Ani Joshi wrote:
> On 16 Apr 2002, Michel [ISO-8859-1] Dänzer wrote:
> > Is that with a driver with optimized ImageWrite acceleration? I don't
> > think any stock XFree86 driver is really optimized there yet, I'm
> > working on radeon now and the results should be easily applicable to
> > r128.
> There are several that do ImageWrie acceleration.  The radeon driver already
> does indirect ImageWrite acceleration (its the same as CPUToScreen color
> expansion).

Which is slower than memcpy for a simple upload. I'm finishing a CP based
implementation which is significantly faster, at least in 16 bit.

Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast

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