Seems this option now does nothing in RC3.
Confirmed it does work as expected in RC2, but not in RC3.
Do you have subpixel mapping on or off?
It works for me, regardless of the sub-pixel mapping. Maybe you can show an image and/or your Color mapping settings?
Best regards,
Vlado
ahh sh*t
Terribly sorry. But I appear to be an idiot.
I never actually let the render finish paste the calc stage. And wether affect BG is on or off.. the calc stage is the same.. only the FINAL render part show the BG differently.
Has this changed recently? I swear the calc stage showed the BG differently depending on wether or no Affect BG was ticked.
Sorry for jumping the gun, i tested it on just about everything but never sat thru an entire render… 
I tried in 1.49.21 and it seems that changing the option does affect how the calc phase shows the BG.. I guess I was just expecting that to happen.
Time to get some sleep I think
move along nothing to see here EXCEPT a ZZZZIIIIIIIIIIIIIIIIIIIIIIIIIIIIINGGGGGGG for daforce 
:lol:
floooood 
LOL yeah totally deserved that one.
completely!
Zing of the year I think dude!
I would certain say that it would have to be in contention for the award.
