Hi all

There seems to be a bug in MAX 2009 when using hair and fur together with opacity mapped objects.  I have a grass plane made with hair and fur and some trees made with plane and opacity maps (the standard billboard deal). The “grass” renders perfect everywhere, but where you have a tree, no grass gets rendered behind it. In other words you can see through the branches of the tree that there are no grass behind it.

Changing the composite method in hair and fur render settings to GBuffer instead of normal, kinda makes it little better, but there are no antialiasing on the grass directly in front of the tree and the grass behind the tree is totally screwed! This problem can easily be reproduced and is very apparent in an animation.

Does anybody know a workaround or have any suggestions? This is a very critical part of my current project.

Best Regards,
Morne (DVP3D)

yeah - i can confirm this behaviour - there is a thread about it already but i could’nt find it right now....

anyway - seems that with Max 2009’s Hair, the alpha channel gets trashed if opacity mapped objects are in front of hair
Max 2008 and previous work fine in this scenario. Please make the effort to log this on the offical Bugreport-Form..

http://usa.autodesk.com/adsk/ser...id=5600504&linkID=9241177

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anybody have a workaround or can tell me how to make grass effected by wind space warp with max particle flow?