Its introduced in 1.4 as extension and officially supported sinde 2.0 as far as I know. Unfortunately that doesn't seem to mean that it is also supported on a wide variety on gfx-cards. I'd go with power-of-two-textures to be safe.
Non-power-of-two Textures Example
BlitzMax Forums/BlitzMax OpenGL Programming/Non-power-of-two Textures ExampleThe forum is locked. These are the original blitzbasic.com forums, kept so they can still be read. No new topics, replies or edits can be made here. To join in, head over to the Blitz3D+ forums.