CGTalk - Glass in Ambient Occlusion

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marciani

11-28-2006, 11:41 AM

Hi all, i'm working in a Archviz project, and i need to reproduce the glass transparent shadow blur effect.
Let me explain: i have some cristal table inside the structure, i have a partition with ambient occlusion and a partition with the cristal table.
The result are not good, i have some transparency but not in all obj(at the intersection became black), and the blurry shadow is not colored (sligtly blue).
Some tips?
thx
leo

visualboo

11-28-2006, 06:27 PM

As far as I know the only way to render AO with a transparent object is to use ctrl_geolights in a FG dome type of setup. But without the FG.

marciani

11-29-2006, 08:04 AM

Thank's for the reply.

use ctrl_geolights

I'm at beginning, could you explain how do this, please.
Thx
Leo

bt3d

11-29-2006, 03:04 PM

I think the BA_raylength shader from the binary alchemy collection ( http://www.binaryalchemy.de (http://www.binaryalchemy.de/) ) supports transparency.
Another way would be maybe the mib_FG_occlusion shader which is part of the T2S_MentalRay shader.

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