|Dec 4, 2003, 10:05 AM||#1||
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Join Date: Dec 2003
Ported R200 PCI
Hello all, I hopr this is the proper place to post this.
I've been doing some work to Port PC GFX cards to the Mac. With the help of a Open FirmWare GURU I now have a PC Radeon 9100 PCI working under Mac OS 10.2.x with 3d/2d GFX. Only trouble is that it seems that HW T&L is not working as well as it should. CineBench shows Higher #'s for Software Lighting(SW-L) than for HardWare Lighting(HW-L) and games like UT2K3 are about 1/2 as fast as they should be.
I ran this card in my PC before the Firmware mod for some Base #'s and in CineBench HW-L was 680 and SW-L was 530. In my Mac I get HW-L 142 SW-L 188. On my Radeon 8500(R200) in the Mac I get HW-L 210 SW-L 189. So what I am thinking is this is a driver trouble, seems only 2 of the four texture pixel pipelines are being feed by the driver for the 9100.
Odd deal, but I was hoping some one here knows more about Radeon HW and Drivers. Some have been able to unlock pipelines in the 9500 with software hacks and I was hoping that some one could explain how that sort of thing "Works". Please dumb it down a bit for me as I learning and not all that hip to how a GFX board does it's thing.
|Dec 4, 2003, 04:03 PM||#2|
Join Date: Sep 2003
I would post this over @ http/ocfaq.com forums and look for a reply from W1zzard as he made the 4-8 pipe software BIOS hack for the 9500/9800SE series.
And on a side note, do you think your Firmware guru could help me find a way to flash a Cheetah OEM SUN drive to a retail image? Seagate claims that it will render the drive non-functional. I need a way to extract a firmware image, and then flash to another drive.
G H Z~
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