Whenever I call glScalef() the normals also get scaled and therefore don''t have a length of 1. This changes the lighting. When I scale an object to make it big then it gets dark, and when I scale an object to make it small it gets bright. How can I have it where glScalef() won''t scale the normals? Thanks.

If you do want your normals to have a length of 1 you could enable GL_NORMALIZE. But it could half your framerate if you do.

Edited by - Wouter on December 4, 2001 9:18:22 AM

You may use the EXT_rescale_normal extension. It only divide the normal by the scaling factor, which is faster than normalizing it. Of course, this only works if your normals were normalized before the scale.