Normal pass from Fluid ?

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Old 06 June 2010   #1
Normal pass from Fluid ?

I am trying to got a normal pass form a fluid in Maya.
The preset from Maya 2008 is rendering the bounding box instead of the fluid.
I also tried to plug the mibAmbOcc in the color or incandescance of the texture fluid but it doesn't give the blue channel.

Last attempt was to create 3 directionnal lights which almost work but I keep a shading on top of the rgb lights...

Any idea ?
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Old 06 June 2010   #2
you can try convert fluid to polygons to get normal or p pass from the fluid voxels
its not the best workaround but perhaps its works
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Old 06 June 2010   #3
hmmm I tried, nothing accuration unfortunately.. becquse no more transparency
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Old 06 June 2010   #4
would like to know too if there are any other solution beside the 3 lights rig. What do you usually use fot that kinds of work?

cheers
 
Old 06 June 2010   #5
whats about the alpha from the beauty pass you cant use that
for transparency ?
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Old 06 June 2010   #6
Originally Posted by swag: whats about the alpha from the beauty pass you cant use that
for transparency ?


using a fluid to polygon conversion is not very accurate , like on the edges of the shapes of the fluid ,not sure it would be a good solution , will give a try
 
Old 06 June 2010   #7
The 3 lights aproach will give you the normal pass for fluids (smoke...), there is no better solution.
 
Old 06 June 2010   #8
Originally Posted by Uiop: The 3 lights aproach will give you the normal pass for fluids (smoke...), there is no better solution.

Thx for that, it was my first clue.
I keep a lot of shading with that method, I mean I don't have plain RGB. Any cidea ?
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Old 06 June 2010   #9
http://forums.cgsociety.org/showthr...64&page=2&pp=15
 
Old 06 June 2010   #10
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