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Hello,
I’m having trouble rendering a 32bit displacement map with mental ray inside of Maya 2009.
I created a 32bit OpenEXR (tried .tif aswell) file. However i cant get it to work correctly.
I have 2 characters. One modelled in Zbrush 3.1 (the half robot character) the other in Mudbox 2009.
The Zbrush character has a miss_fast_skin shader with a 32bit displacement map.
The mudbox character has a simple lambert with diffuse map and displacement map setup the same as the zbrush one. I do have a normal map applied to the mudbox character however.
Is the alpha settings for rendering mudbox displacements different to Zbrush?
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Hey,
First thing you can try is turning on “Alpha is Luminance” and then a handy expression you can use in the alpha offset is (right click and create expression in the alpha offset box) fileName.alphaOffset = -(filename.alphaGain* 0.5). In your case you can replace file50 for the “fileName”.
This expression will allow you to quickly dial in your displacement maps. Also make sure that the displacement map does not have LZW compression in the tiff file.
Another thing to do is, in your maya preferences under rendering, turn on “use Maya-style alpha detection on file textures”
I assume you are using the mental ray approximation editor as well?
Cheers,
-R
Robert Vignone
http://www.robertvignone.com
Win 7 | I7 @ 3.6ghz | 24GB DDR3| GTX580 |
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