I recently trying to find a way to use tessellation since toolbag still have some problem with the mesh hole, I discover this interesting little demo that nvidia have :
http://developer.download.nvidia.com/SDK/10.5/direct3d/samples.html#InstancedTessellation
there is 3 main algorithm which it's Bezier ACC, Gregory ACC and Pm ACC
the bezier ACC is probably the one that toolbag2 is using. What I did noticed is the 2 other algorithms did collapse the hole which it's interesting to study I believe
![:) :)](https://polycount.com/plugins/emojiextender/emoji/twitter/smile.png)
I do think it will be usefull for you to improve the tessellation system
![:) :)](https://polycount.com/plugins/emojiextender/emoji/twitter/smile.png)
Enjoy !
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I'd like to use Marmoset to make some presentational renders of some work I've done, but I know I'd be stuck correcting holes in photoshop in post. :shifty: