Thanks. Yeah that would be great to see some of the cracks spreading close up in slow-mo
. Currently I can't find a smooth way to make this happen in my 3D problem my glass shader always reveals my cracks before impact so I've been cheating switching out a non-fractured glass for the fractured one on impact and using masks in post to some what reveal the cracks over time.
Here is a software render of an impact.http://www.vimeo.com/12589917