On Wed, 21 Nov 2001, Sprague, IT3 wrote: >Date: Wed, 21 Nov 2001 07:24:27 -0000 >From: "Sprague, IT3" <[EMAIL PROTECTED]> >To: 'Mike A. Harris' <[EMAIL PROTECTED]> >Cc: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]> >Content-Type: text/plain >Subject: RE: [Xpert]Radeon 2D accel very slow when DRI is enabled. > >No MTRR? That could be a significant percentage of it. I've got a >semi-similar setup (32MB DDR Radeon, 768MB PC133 system RAM, 1.2GHz Athlon, >KT133 chipset, AGP 4x, 256MB aperture), and while I do notice a few XAA >items being disabled, I don't see the dragging slowness that you mention, >DRI or no.
MTRR makes no difference, because it is non-functional in both cases. So, that doesn't explain why when DRI is enabled, 2D takes a dive, and seems to run like it is done unaccelerated. Again, note that I said 2D is fast with DRI disabled, but slow with it enabled. I've hypothesized the reason for the slowdown, as being lack of proper 2D acceleration being implemented when DRI is enabled, checked the sources out to find that that did in fact seem to be the case, and now had that confirmed. Getting MTRR working would be an overall improvement on top of that, but if it was working now, it would just make for slightly faster unaccelerated 2D, and not accelerated 2D. Getting the 2D CP stuff implemented that is not implemented right now is the next step. I'm at least 30% happy that I know what is wrong now. ;o) Take care, TTYL -- ---------------------------------------------------------------------- Mike A. Harris Shipping/mailing address: OS Systems Engineer 190 Pittsburgh Ave., Sault Ste. Marie, XFree86 maintainer Ontario, Canada, P6C 5B3 Red Hat Inc. Phone: (705)949-2136 http://www.redhat.com ftp://people.redhat.com/mharris Red Hat XFree86 mailing list: [EMAIL PROTECTED] General open IRC discussion: #xfree86 on irc.openprojects.net ---------------------------------------------------------------------- _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
