I've been going through the R100 driver in the texmem branch. I'm trying to make it more like the R200 driver. This should make it easier for me to make the texmem changes to the R200 driver and back-port features (npot textures & YCBCR textures) to the R100 driver.
I've come across two differences in UpdateTextureEnv for which I could use some clarification. 1. The two drivers handle GL_PREVIOUS in GL_COMBINE mode quite differently. The R200 driver does pretty much what I would expect. If we setting-up texture unit 0, use the primary color as the input. Otherwise, texture unit n-1 is used. The R100 driver does some funky thing with the RADEON_COLOR_ARG_A_CURRENT_* values. Is that even correct? 2. The R200 driver does some special casing when _ReallyEnabled == 0. Why is that needed, and should it be copied in the R100 driver? That's all for now, but I'm sure I'll have more questions later... -- Smile! http://antwrp.gsfc.nasa.gov/apod/ap990315.html ------------------------------------------------------- This sf.net email is sponsored by: See the NEW Palm Tungsten T handheld. Power & Color in a compact size! http://ads.sourceforge.net/cgi-bin/redirect.pl?palm0001en _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
