On Fri, 28 Mar 2003, Keith Whitwell wrote: > Leif Delgass wrote: > > On Thu, 27 Mar 2003, Keith Whitwell wrote: > > > > > >>Leif Delgass wrote: > >> > >>>I removed the alpha component from the visuals because the 32 bit span > >>>read function in i830_span.c doesn't read alpha from the framebuffer (it > >>>always returns 255). There's a comment there saying that it should work > >>>but doesn't. I think that should be fixed before advertising an alpha > >>>channel. Also, I changed the bufferSize from 32 to 24, so that should be > >>>changed back to 32 if an alpha channel is advertised. > >> > > Hmm, changing this back doesn't seem to affect the output from glxinfo: > > visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav > id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat > ---------------------------------------------------------------------- > 0x22 24 tc 0 24 0 r y . 8 8 8 8 0 0 0 0 0 0 0 0 0 None > > > 'bf sz' is still 24, despite me setting bufferSize to 32 in i830_dri.c: > > pConfigs[i].bufferSize = 32; > > > any clues, anyone? > > Keith
I ran into that as well, see: http://marc.theaimsgroup.com/?l=dri-devel&m=104457475806902&w=2 I think the code related to bufferSize in xc/programs/Xserver/GL/mesa/src/X/xf86glx.c is suspect regarding bufferSize. I think the X visual depth is being used instead of the sum of the channel sizes. There is a comment that a bufferSize of 32 "[...]may foul-up the visual matching code[...]". I haven't looked at it closely enough to see what would be needed to fix it. -- Leif Delgass http://www.retinalburn.net ------------------------------------------------------- This SF.net email is sponsored by: The Definitive IT and Networking Event. Be There! NetWorld+Interop Las Vegas 2003 -- Register today! http://ads.sourceforge.net/cgi-bin/redirect.pl?keyn0001en _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
