I work with thee übernerds that are real mac whores.. if someone makes a list of what needs testing they are willing to test. They all have several kinds of macs with different HW/gpus, so I'd need a list of what shuld be tested for wichHW if spesifics exist.

Cool... first thing to try out is checking GLSL, that is, if the existing bugs get fixed... for this:

r_glsl 1 -> Crash?
then:
r_bloom 1 -> does it appear right or weird and just on the bottom half of the screen?
r_shadow_realtime_world 1; r_shadow_realtime_world_shadows 1 -> jagged edges, looking like zfight, on shadows?