Tileable textures of red earth and gravel, sticks and dead grass, sand and small weeds. I photographed these textures near the National Museum of Australia, Canberra (right here: https://goo.gl/maps/rFNJJ ). They were cropped and made seamless in the GIMP using Map - Resynthesize. Final textures are 2048x2048 in PNG format.
Synthetic normal maps were generated using the Insane Bump plugin for the GIMP - I tweaked the settings to try and make reasonable maps, but if you think you can do better by all means go ahead !
For my own future reference - preview image was generated using ImageMagick like:
$ montage *.png -geometry 256x256+2+2 -tile 4x6 arid_ground_preview.jpg
(To keep the normal map archive under the 200 Mb limit, I removed two of the sand normal maps - you could easily regenerate these with Insane Bump, or just use one of the other sand maps and it's unlikely anyone will notice :) ).
Comments
If anyone is curious to see some of these in use - I've used a few in this test Mars-scape (Unity web player - sorry Linux peeps, I'll try to remember to do a WebGL version once it's stable).
Wow those are great. I will see if I can use any of them in my African game!
Just leaving this here since I expect it's where I'll find it when I forget: https://github.com/kmkolasinski/AwesomeBump
AwesomeBump is a great alternative to Insane Bump (or xNormal), with nice fast GPU generation of normal maps, height maps etc, and material previews on a mesh. I should really re-process all these base images using it.