Hi David thanks for contacting us I'm Alex from c4dzone

The grass painter pkugin works with poly objects so when you finish to paint the grass, a polygonal object is generated by the plugin.
Each polygonal objects are compatible with other rendering engine without problem.
We give materials folder inside the plugin pack created by only the color channel so you can create the material for octane in a second

Let me know and feel free to write me if you need or use our support forum area into the c4dzone.com board forum

Alex
FOLLOW US