It doesn't do that as far as I know. Textures must be at least 64x64 but can be more or less any size. I don't know what happens when they get real big, however, as the gfx cards have a maximum texture size.
OpenGL has some calls you can use to find out the maximum texture size supported. I don't know if BMX is sensitive to that.
OpenGL has some calls you can use to find out the maximum texture size supported. I don't know if BMX is sensitive to that.