RE: [PyMOL] CGO raytracing problem

2004-06-11 Thread Warren DeLano
Gareth, Yes...triangles needs normals in order to compute lighting. You can compute a single normal using cross products between any two sides of the triangle, but you do have to be concerned about handedness, both in terms of the normal direction, and in the ordering of vertices.

[PyMOL] Re: [o-info] enable direct rendering DRI on fedora core 2

2004-06-11 Thread Matthew Zimmerman
Dr. Daniel James White PhD wrote: > how can I enable direct rendering DRI on fedora core 2? I have an ATI radeon 8500 LE, Should I use the redeon driver, or the r200 driver? You want the 'r200' driver. See: http://dri.sourceforge.net/doc/dri_driver_features.phtml There are actually two driv

Re: [PyMOL] enable direct rendering DRI on fedora core 2

2004-06-11 Thread Jack Howarth
Daniel, Did you use the 'glxinfo' command in an xterminal under FC2 to check if 'direct rendering: Yes' is reported. Assuming you have your board in an AGP slot and used the System Settings-> Display control panel to enable the radeon driver, the resulting xorg.conf should be preconfigured to e

[PyMOL] enable direct rendering DRI on fedora core 2

2004-06-11 Thread Dr. Daniel James White PhD
Hi everyone! how can I enable direct rendering DRI on fedora core 2? I have an ATI radeon 8500 LE, Should I use the redeon driver, or the r200 driver? I edited my xorg.conf file is as below, but VMD and pymol tells me I am still using indirect mesa rendering, and it is SLOW. the ATI clo