Introduction to Maya - Rendering in Arnold
This course will look at the fundamentals of rendering in Arnold. We'll go through the different light types available, cameras, shaders, Arnold's render settings and finally how to split an image into render passes (AOV's), before we then reassemble it i
# 1 11-01-2011 , 11:10 PM
ColdWave's Avatar
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Location: Bulgaria, Vidin
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Alpha Map problem.

Can't find the reason for this ?
I have my alpha textures black/white.

One is from the viewport 2.0
One from the UDK ( Works fine )
One from the Hardware Renderer

Ideas why the .... is this happening ?

I checked the alpha illuminance ...

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# 2 12-01-2011 , 06:34 AM
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for what I can tell maya always had and still has a problem to display alphamaps in viewport properly when you have overlapping and combined geometry using alpha. this seems to be a sorting or z-buffer problem which means if the geometry is combined maya doesn´t know anymore which plane to render first. this results in flipping textures from back to front and and overall transparent geometry.

here´s a picture to show ->

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everything starts and ends in the right place at the right time.
# 3 12-01-2011 , 12:08 PM
Jay's Avatar
Lead Modeler - Framestore
Join Date: Feb 2003
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Maya has had this issue since Jesus, as long as your renders work then dont worry

Jay

# 4 12-01-2011 , 01:27 PM
ColdWave's Avatar
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Yeah i understand... just wondering if there was an option for that issue.
I guess not : )

# 5 14-01-2011 , 06:28 PM
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A good way around it is to separate your geometry and assign each peace the same textures and the alpha will just work fine... That's how i do it..

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