You've just stumbled onto the Achilles heel of DX - its volume rendering capability is woefully inadequate. Hardware rendering only shows you the boundary of the volume, so you're not doing anything wrong.
Since you have an SGI try using the Volumizer API for volume rendering (best if you have the texture option on your SI). Donald J. Siegel wrote: > > Hi there, > > I'm seeing some strange behavior when I switch from software > rendering to hardware rendering when looking at volume > rendered data. In particular, when I look at > VolumeRenderingSimple.net with software rendering I can > correctly see through the slab and make out the 3-dimensional > shape within. However, when I switch to hardware > rendering (in the Rendering Options panel) the interior > shape disappears (the volume becomes opaque) and I only > get a projection of the interior shape onto 2 of the 6 planes > bounding the volume. > > Am I doing something wrong here, or is my hardware > just not up to snuff? > > I'm using an SGI Octane with SI graphics (which I'm > told is the basic board) on IRIX 6.4, > and this is for openDX 4.0.5 from the binary archive. > > Thanks! > > don. > > | Donald J. Siegel 116 E Del Rio | > | [EMAIL PROTECTED] Tempe, AZ 85282 | > | Physics Dept, Univ of Illinois (480) 965-8509 | > **Present location: Arizona State University** -- Dr. A. Ballard Andrews Senior Research Scientist Schlumberger Doll Research Old Quarry Road Ridgefield, CT 06877 tel: 203-431-5522 fax: 5521
