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View Full Version : shadow matte + "Store with irradiance map" ON (V-Ray)


cat3000
05-17-2011, 07:51 PM
Hello,

I try to create an "infinity floor" because I want to composite some 3D Images with 'real film' material.
First i created a "VrayMtlWrapper" for the floor.

Base material = standard
Matte surface = on
Alpha contribution = -1,0
Shadows = on
Aphect alpha = on

fine. btw. I'm using 3D Studio Max 2010 + V-Ray.
Than some "V-Ray" Light ... turn the GI on... and click
on "Store with irradiance map" ... less noisy texture + faster render time.
perfect.

But now i have to turn the background white. For the shadows...
and thats teh big problem. I can't use "Store with irradiance map" anymore.
its to bright. ... and so my shadows are gone.
Sure.. i can increase the subdivs to get rid of the noise... but
that would also increase the render time. Maybe there is a trick
to use "Store with irradiance map" + "VrayMtlWrapper" with black background,
or... I don't know

here is a image to make it clear.
http://www.monostep.org/temp/shadow01_kl.jpg (http://www.monostep.org/temp/shadow01.jpg)
klick image

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