Maya displacement map problem

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Old 07 July 2013   #1
Maya displacement map problem

Hi all
Ive been trying to find a solution for this all day watching tutorials about it on youtube, but couldn't figure it out.

I created a displacement map in Xnormals program and tried to assign it in Maya however when i render it, it goes crazy.
this is my low res model
http://prntscr.com/1f0li6
and this is the displacement map im trying to project to get all the details back from the hi res to the low res model
http://prntscr.com/1f0lvu
and when i render it with mental ray i get this
http://prntscr.com/1f0m0x
heres my hypershade to show how its assigned
http://prntscr.com/1f0mau

I would appreciate any help on this, thanks
 
Old 07 July 2013   #2
Try to do following....

1. Select the model and apply Displacement approximation.
(You can find it in "Windows>Rendering Editors>mentalray>Approximation editor. When window appears click on Create on Displacement. and let the settings default.
2. For the Displacement map node, change the "alpha offset" to " -half the value of alpha gain". ex: AG = 1, AO = -0.5 or AG = 0.5, AO = -0.25



Srinivas G
 
Old 07 July 2013   #3
try this

apply displacement approximation to your model. (you can find it in Windows>Rendering Editors>mental ray> approximation editor.

for displacement map node, change the values of alpha gain & alpha offset to 0.5 & -0.25.
 
Old 07 July 2013   #4
Thanks for the reply.
I tried doing what you said, but it still doesnt look right
http://prntscr.com/1fj9co
then changed it some more and managed something a bit better
http://prntscr.com/1fj9e5
but it should look like this, this is with the normal map only
http://prntscr.com/1fj9oy
 
Old 07 July 2013   #5
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