http://bugs.freedesktop.org/show_bug.cgi?id=20626
--- Comment #3 from raoxianhong <raoxianh...@163.net> 2009-03-12 23:16:32 PST --- (In reply to comment #2) > (In reply to comment #0) > > When I use texgen with glVertex4f(x, y, z, w) on r200(ATI Radeon Mobility > > 9000 > > card), the s coord texgen use (px, py, pz, pw), but I found s coord always > > be > > px * x + py * y + pz * z + pw, not expected px * x + py * y + pz * z + pw * > > w > > as if w is always 1.0f. > Note that the r200 has some hw limitations wrt to texgen, so some cases > (particularly if you enable texgen only on some coords) might not work > correctly. That said, what you're doing should work - I assume it does if you > use sw tnl (tcl_mode=0 or use driconf)? You've got a very old mesa version > however, does this also happen with something newer? Thank for replay, I use the texgen function use with GL_OBJECT_LINEAR option and expexted tex coord as px * x + py * y + pz * z + pw * w, it looks like r200 set object coord to normalized (x/w, y/w, z/w, 1.0), so the result is px * x / w + py * y / w + pz * z / w + pw, is it a hw limitation or parameter setting bug? -- 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
