http://blogs.msdn.com/shawnhar/archive/2007/03/06/more-programmer-art.aspxThe Generated Geometry sample program uses two textures, sky.bmp: and rocks.bmp: Both started out as photographs taken near Paradise on the south side of Mount Rainier. Here are the originals: Original sky photo Original rocks photo To use these as textures,enCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/shawnhar/archive/2007/03/06/more-programmer-art.aspx#1829928Wed, 07 Mar 2007 21:10:41 GMT91d46819-8472-40ad-a661-2c78acb4018c:1829928gtpunch<p>One quick way to improve the sky texture would be to double it's width with a mirrored copy. Then instead of needing to make it tile (which it would already if it's mirrored) you could a little time breaking some the symmetry, removing the extra sun, etc.</p> <p>Instead of resizing and duplicating the image to make it tile a quick way is to use the Gimp's Filters-&gt;Map-&gt;Displace tool, which shifts and wraps the image. Photoshop has something similar too.</p> <p>I liked the Generated Geometry sample- all of these small focused samples are quick to understand and really great starting points for tinkering with.</p>