Gaea School: Masking Rivers

 Masking Rivers

So you want to export river masks? Not too hard. Here is an example node-tree:

1. Create your terrain. Add Rivers (obvs!)
2. Portal out for colour outputs. Add a TextureBase which intelligently masks different types of topology, such as slopes.

3. Add a portal to the Rivers node from the Rivers output. You can export this directly for your mask, but if you want an integrated colour map, use two SatMaps one for the ground and one for the river, then use the River node output for the mask on the combine node.

Colour output (combined)

Rivers mask output

Source tutorial: https://www.youtube.com/watch?v=XLWplfkYDdQ

Blender output

100 million polygons and lots of maps. Work-in-progress for sure.