FG/Photon Maps

[louis.cho]

I was wondering how the FG and Photons maps work on mental ray. If I want to render a scene 800x600 and check the read/write of both maps, can i use the same maps with the same image at 1600x1200?

 

Also, if I do an animation, must I make new pass of photons and FG each frames?

 

and finnaly, I I save both maps and make some littles adjustments on geometry of my scene...very low changes, must I re-pass photons and FG or I can use the same maps as before?

 

Thanks

[louis.cho]

this help a lot, thanks for the fast reply.

 

Yes, but the good news is that you can render a low quality pass of the anim to get your FG map then use that for your fin anim.

 

 

The low quality animation...where can I cut to have low quality without lower FG and photons settings? anti-alias?