The Crystalize
filter is not new, but it's been significantly
improved in this release.
It now has a 3D lighting (shading) effect as an
option. It also acts more in real time thanks to
new optimizations and multithreading. The more
cores your PC has the better.
How to start
the Crystalize filter:
If you're new to the Crystalize tool, here's how
to access it from the Filter menu:
Initially a fairly simple interface is shown, but it
already has new options for shading, and for
expanding the interface to the right.
Click on the box on the right side to expand the
interface.
More options will appear. You may recognize a strong
similarity with the recently also improved filkter:
Render -> Cellular
Here are some examples of what's possible with this
filter, and combinations with others.