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Help re transparency in Mental Ray
show user profile  magarlick
Dear all. Please see the following:

https://www.dropbox.com/s/q6lmjnlsq7z95ry/test1.jpg?dl=0

The above shows a sphere rendered in Mental Ray with an Arch and Design glass material applied to the sphere. So far so good. Now look at this:

https://www.dropbox.com/s/9etzmvyii3c11hj/test2.jpg?dl=0

Here, a second sphere, just larger than the previous one, has been added to give the gridlines you see. The material is a PSD file with two layers: one with the grid (blue lines on white BG), and one with the grid as a mask (white lines on black). I applied the blue grid to the diffuse map slot as a bitmap, and the mask to the opacity map slot, also as a bitmap.

Question: why is the second sphere darker? I want only the grid to show up but the whole thing gets darker unless I turn off this second sphere.

Thanks in advance.




-------

DR MARK A. GARLICK, Director
Mark Garlick Words and Pictures Ltd http://www.markgarlick.com/
http://www.space-art.co.uk/
https://www.youtube.com/user/magarlick
read 273 times
3/16/2016 3:09:13 PM (last edit: 3/16/2016 3:09:13 PM)
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