http://bugs.freedesktop.org/show_bug.cgi?id=22181
--- Comment #5 from Roland Scheidegger <srol...@tungstengraphics.com> 2009-06-10 04:03:40 PST --- (In reply to comment #4) > (In reply to comment #2) > > Created an attachment (id=26606) --> (http://bugs.freedesktop.org/attachment.cgi?id=26606) [details] [details] > > possible fix > > > > No this rather looks like classic z fighting, I think this bug reappeared a > > couple of times already. > > Does this patch fix it? > > I think r100 should also do this though it won't matter for doom3 (and > > results > > between fixed function and vertex programs will be different anyway since > > one > > will be running in hw one in sw so it might not really help there). (r300 > > probably wants to set this too.) > > > > How does dp4/mad selection affect the resulting vertex position? This affects resulting vertex position only very slightly due to rounding errors. The reason for z fighting is doom3 renders the same geometry twice, first pass with fixed function (for shadows), second pass with vertex program. If the generated fragments don't match z fighting will happen, and since r200 uses DP4 for fixed function hw tcl we need to match that for vertex program. -- Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
