I know this is a zbrush forum buit im trying to emport my highrez displacement back to maya, i apply the map to the color channel first to make sure the displacement is aligned correctly and so forth then i remove it from the color and add it to the displacement channel, i follow the settings as they appear here: http://www.pixol.com.au/zbrush_maya_tutorial.htm and still no cigar. maya just crashes ALways. it says aborted etc etc. or fatal error and closes. any ideas?
Hi elfufu,
There’s two possibilities:
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You are using a grayscale displacement map and trying to render in mental ray. If so, cmake sure you convret your image to an IFF file or RGB TIFF.
-
Your teseeleation settings are too high and you are runnig low on memory. Try adjusting down your teselleation settings, or, adjust how much memory you want to devote to the render in the Render Globals.
Regards,
Zendoftheworld…
i swear my hope on zbrush are just about over after spending 3 days of unsucessfully rendering ANYTHING in maya with half decent displacements or mental just crashing
will anyone who has successfully rendered out something in maya please either let me see their MB file or take a look at mine. this is just the most frustrating thing ever
hi,
if maya crashes during mr rendering, it might also be due to your geometry.
Mental ray in maya 5 will only accept 3 and 4 sided polyfaces.If you have triangles in your mesh, you also need to turn on the convert quads to triangle option.
5 or more sided polys might result in a crash.
Flo
I had the same problem. It seems to occur
when you try to render a maya subdv surface model with mental ray subdv approximation.
In the tutorial you mention it doesnt say anywhere that you have to convert the imported poly-object into a subdv surface !
So just render the polygonal model and let mental ray handle the subdivision calculations.
Change the amount of displacement mainly with
the alpha gain and offset settings in the texture.
I’m not a maya expert though so if anyone can elaborate futher on this please do so!
OK, I’m not sure if I was talking bollocks before. Saying that trying to render a subd surface with mentalray subd approximation was
the problem of the crashes.
It crashes maya every single time I try.
When I render a polygonal model it works.
But the detail of the displacment rendered version of the model is not as precise as the
original detailed version from ZBrush.
If you look at the images of the tutorial from Paul Hourmouzis, you see that his displacement render is also lacking detail
(or precision) compared to the ZBrush version.
Again, any Maya experts out there who can shed any light on this?
I just try to keep this thread alive cause this displacement stuff is one of the main reasons why I bought Z2!
thanks
As far as I know, Mental Ray will only render(and convert) a Subdivision Surface only if the polycage is all quads. I did a small amount of testing with subdivision surface approximation and had MR crash with meshs that had tris in them. Renders died everytime…
could that be the issue?
Cheers,
Shawn
well ive had no luck either and I am lacking lots of detail…
On the crashes I think its to high settings for displacement approx… should be something like 0 and 5 max…
on the detail thing I think its a unify scale issue though…