On Thu, 19 Feb 2004 18:58:25 -0300 Rafael Maximo <[EMAIL PROTECTED]> wrote:
[snip] > > I really interested on helping, specially on savage4 driver because is the > only one i have access, unfortunately i don't have much experience on > hardware programing but i'm learning a lot checking the savage source and > i'll try to help in anyway a can. I think you should definitely start with fixing smaller problems so you get used to the source code. These two can be done on savage4: - disable hardware culling for lines and points - fix LOD bias The last one is the easier one I think. In savagetex.c in savageUpdateTex0State_s4 and savageUpdateTex1State_s4 there is a pretty fancy computation of the 9bit LOD bias (probably some fixed point format) from a floating point value. The lodbias mesa demo shows no visible change of the LOD bias, so it's either broken in hardware or the formula is wrong. Can you try to find a formula that looks right by comparing with indirect rendering? For the hardware culling problem you'd need to get an understanding of how savagetris.c and the templates that it uses work. That may take some time to get into. Also comparison with other drivers, especially r128 and mga, may be helpful. Felix ------------------------------------------------------- SF.Net is sponsored by: Speed Start Your Linux Apps Now. Build and deploy apps & Web services for Linux with a free DVD software kit from IBM. Click Now! http://ads.osdn.com/?ad_id=1356&alloc_id=3438&op=click -- _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
