Update:0.7.1 adds ray tracing of NURBS.
Update:0.7.2 Bug fixes to NURBS ray tracing.
Update:0.7.3 EXR support, improved parsing, MacOS X!
Update:0.7.4 Major speedups for ray tracing real scenes.
MacOS BUGFIX:Spotlights have been broken in the Mac build. No one told me! Mac users should update to the current build.
Update:0.7.5 Various fixes and features
Thats right! I've finally got the MacOS X port done!! It currently lacks a display driver, as I've not decided how to integrate it with the Mac UI, but otherwise its working. I'd appreciate as much feedback as possible on the port, so I can gauge the need to any Mac specific work (or fixes).
The current release can be downloaded for Raspberry Pi, freeBSD, PC Linux, Windows and MacOS X. You can still download the 0.7.4 release for SGI (email me if you're using this, and I'll do a new build). Let me know which versions you're using, as I constantly review what platforms are supported. I'll consider a port to most systems (that I can get access to), but unless I know they're being used I may drop that support. In addition to the release notes we now have a brief manual which describes most fo Angel's features.
You'll need the standard shaders. Set the environment variable SHADERS to point to the directory you put these in (if you've installed BMRT you've already done this). Shaders can be compiled using either slc or Giles.