Hey All!
My project is to make a maya text on my table. I recorded it, tracked it, imported to maya...Working good. & now i am rendering 458 frames * passes.
diffuse
occ
shadow
I am not 100% sure in some part.
If i do an occlusion of my text "Detonation", does it need a plane under the Text??
My other problem is the shadow pass.
What is the method? Should I remove the Detonation text of the picture? If yes, where can i find that visibility button? 
! I switched on the cast shadow
J
Hi
this is S R Swamy, INDIA
solutions for ur problems:
1. Yes, its need a plane under the Text, in comp u have to merge your layers with multiple option.
2. you have to apply usebg material to ur text and base plane and change use background attributes : specular color = BLCAK, reflectivity = 0, reflection limit = 0, shadow Mask = 1;
thats all u can get alpha out put for only Shadow
all the best.
by 
SRS
swamyrs@gmail.com
Last edited by swamyrs; 11-01-2011 at 02:47 AM.