Texture values

bramley1 · May 11, 2002, 9:56am

Hi
Does anyone know how to read the colours of the pixels in a texture, without having to display it on a polygon and then use a function such as Glut Read Pixels.

Many
thanks

D

zed · May 11, 2002, 12:02pm

glGetTexImage(…)
btw mightnt be that quick

Pops · May 13, 2002, 4:27am

You could loop through the image data between loading it and turning it into a texture. I use this for colour keying in my app and doesent take too long.