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View Full Version : Render Afterburn + Geometry matte = Long render time?

renochew
04-21-2008, 01:00 PM
Hi, I am puzzled by a project I am doing right now, say when I render the afterburn volumetric effect alone, the render time for each frame is no more than 10 seconds, but when I add some high rez geometry with matte/shadow material assign to it (just to clip out those region block by the geometry), the render time goes up to 2 mins. Is it a normal behaviour? I even tried disable receive shadow for the geometry but it didn't improve the render time, I am wondering what take so long to calculate? What do you guys do to render separate pass for the volumetric effect?

Hope it make sense.

Thanks in advanced.

(I am using AB4)
SoLiTuDe
04-30-2008, 05:09 AM
How long does it take to render the geometry by itself?
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04-30-2008, 05:09 AM
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