How to repeat texture across surface (must work in SceneKit/iOS/OS X) Let's say I have a texture with 1x1 size, and then a surface with a relative 10x10 size (think floor). How do I make the texture repeat over the surface so that the texture is not stretched over the whole surface, but tiles itself perfectly in the original size 100 times? Using 2.71.

I should add that I will need to use this in SceneKit (iOS/OS X), and thus will export to COLLADA. It must work in SceneKit; not only inside Blender.
You could subdivide (W / Subdivide) in Edit Mode your face to 10x10 tiles and unwrap U. The texture is automatically repeated along the uv coordinates.



As pointed out by @someonewithpc this works also with a single plane:



Related:
Unwanted patterns in texture from repeated, seamless image