http://bugs.freedesktop.org/show_bug.cgi?id=20626
--- Comment #12 from raoxianhong <raoxianh...@163.net> 2009-03-17 18:06:53 PST --- (In reply to comment #11) > (In reply to comment #10) > > (In reply to comment #8) > > > R200 is correct, and you. The real world is 3D world, we can only use > > > three > > > indenpendent parameters talk with it. > > > > > > But can I set q coordinate to 1.0f when I disable texgen Q? > > As said the chip might have problem with disabling only some texgen coords, > > though in this case if you don't need a texture matrix it might be fine. > > You can play with R200_TEXGEN_FORCE_W_TO_ONE but this setting doesn't seem > > useful to generate OpenGL-compliant results. > 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! -- 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
