http://bugs.freedesktop.org/show_bug.cgi?id=17099
--- Comment #18 from Roland Scheidegger <[EMAIL PROTECTED]> 2008-10-16 08:28:41 PST --- (In reply to comment #17) > Anyway, surfaces are not magic as you seem to imply. If you put one in front > of > a piece of memory, it applies the tiling function, whether the buffer is tiled > or linear (in which case you scramble the contents). Here is what I think is > the problem : > - the (low end) card doesn't tile the zbuffer > - we still setup the tile registers over the zbuffer > - reads are scrambled by the use of a surface. If the surface wasn't there, > zbuffer reads would work > Oh, I didn't want to imply surfaces are magic. But I think only non-tcl r100-class chips don't use tiling for the z buffer. But if that's indeed some bogus surface setup, you can verify that with mesa's progs/zreaddraw demo, which wouldn't work in this case. -- Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ -- _______________________________________________ Dri-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dri-devel
