after a very long gap, I am now again tinkering with rendering isosurfaces. As I recall, I had some troubles with them in Mantra, but I was thinking I should probably jump onto tinkering in karma instead of mantra. Is there support for RAY_Procedural type of extensions to Karma, or should I stick with Mantra? I could not find anything in the documentation
The procedural API for Karma will be changing slightly in upcoming releases. While there isn't an HDK example, you can see the API headers in $HFS/toolkit/include/BRAY/BRAY_Procedural*. The interface is quite different than mantra, but if you're brave, you might be able to get something working.