This demo was added to my demo collection in 2017 to celebrate the new demo page system, moving to a more convenient page editing solution.
Splatting is a special case of multi-texturing, where a special “map” texture is used to specify which texture should be used in each part of the object. The most straight-forward way to achieve this is to use the RGB channels, and up to three textures, but it is quite possible to handle more.
In this demo, I use the following RGB map:
which maps onto a small terrain like this:
which then controls the blending of three textures like this:
Note tha areas that are not pure R, G or B!
Basic version, using RGB:
Extended to 4 colors, using black:
Extended to 5 colors, using alpha: