[namibj]

No, you can generate with them using diffusion.

[zxexz]

Yep. That technique works very well. Surprised that it’s not more widely used.

[byefruit]

This is very interesting. Have you got any references describing this approach?

[namibj]

I'll try to remember to search some out that I read back when I did a literature review of the subject (probably was 11 months ago).