- Render in modo 203
- Indeed I use ivy generator (freeware)
- The shards are done in max, using a particle system to spread few particule, and using a simple shape of the building for the collision (thanks to the meshing tool I was able to rebuild a super low version of my scene). Then I replace the particles by a couple of shards, with a vertical random rotation. A little script help me to freeze the system and export them back in modo.

Thanks for you positive comments :)

Edit: Yes Vinced, I juste did some boolans (merge with few polylines)