Hi Wojtek- Thanks again for the thoughtful response.
I believe I have enough information to work around this issue now. I just wanted to post my last set of findings for anyone else who might be helped by the thread. I installed catalyst 10.4 and 10.2, and I never quite got to a point where everything worked as expected. I will post some screenshots below. I am thinking I will probably just go with the latest drivers and work around the NULL program driver bug, either by hacking our local OSG copy, or doing the proper ViewData override as you suggested (haven't looked at those details yet). Ahh, yes the texture matrix issue in the glsl. I had indeed already done that (just omitted the matrix altogether in the shader as you referenced). I didn't think to attach an osg TexMat identity matrix at the root, so I was confused by your reference to the osg TexMat class :) But the TexMat solution is probably a more appropriate workaround. Take care- Baker Searles P.S. Yes I too had a dual-gpu ATI setup at home last year (dual 4850 in crossfire) and they were crazy fast, but I had render issues in Fallout 3 (HDR effects would blink on and off) so I had to drop down to using just one of the boards. I guess you can't do that though with the 5970 having both chips on one board :) ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=30405#30405 Attachments: http://forum.openscenegraph.org//files/ati_102_osgshadow_4_sm_211.jpg http://forum.openscenegraph.org//files/ati_102_osgshadow_4_lispsm_299.jpg http://forum.openscenegraph.org//files/ati_102_osgshadow_4_stsm_112.jpg http://forum.openscenegraph.org//files/ati_102_osgviewer_coupe_106.jpg http://forum.openscenegraph.org//files/ati_102_coupe_143.jpg _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org

