http://bugs.freedesktop.org/show_bug.cgi?id=20626
--- Comment #13 from Roland Scheidegger <srol...@tungstengraphics.com> 2009-03-17 18:32:26 PST --- (In reply to comment #12) > > Yes, I do the same operation under ATI's windows driver, and no problem with > > disabling texgen R or Q, (and when enable all of texgen STRQ, they looks > > like > > not set R200_TEXGEN_FORCE_W_TO_ONE), so I guess they maybe have another way > > to > > set q to 1.0 when disable texgen Q. To play with R200_TEXGEN_FORCE_W_TO_ONE > > is > > not a right way but a useful way sometimes. > > And sometimes when we disable some of the texgen coords, the r200 produce > > unexperted results, this maybe we have no right way to generate q coord(for > > examples, q is zero), but ATI can do it! > > An acceptable way maybe when user disable texgen Q, driver can enable it on > R200, and set q1 = q2 = q3 = 0.0f, and q4 = 1.0f, and set the > R200_TEXGEN_FORCE_W_TO_ONE, thus we can get q to 1.0f. it is OpenGL-compliant! Maybe I'm missing something, but I fail to see how that can work. If you set R200_TEXGEN_FORCE_W_TO_ONE how can the result be correct if the incoming vertex w is != 1.0? I think that basically would just eliminate the w divide which can't possibly be correct. -- Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
