Texture: Power of 2 work around

[malakh]

Hi all,
Is there any work around for the power of 2 texture dimensions restriction?

thanks,

Malakh.

[Deiussum]

Look into the extension NV_texture_rectangle.
http://www.nvidia.com/dev_content/nvopenglspecs/GL_NV_texture_rectangle.txt

[Gavin]

Pad a non 2^n texture with zeros, then ratio accordingly when you attach the texture to your poly. Works fine, but can waste a fair bit of mem as in 1025 would have to be padded to 2048 and so on....

[V-man]

The easiest is gluBuild2DMipmaps which scales the image and creates mipmaps at the same time. Otherwise, use gluScaleImage but you need to figure out the widthout heightout values yourself. I personallly scale up:

example:
widthin=500
heightin=200

becomes

widthout=512
heightout=256

V-man