Fading

How can you do a fade to black effect in openGL ?
Is it possible to do using a texture or polygon and blending ?
Or can it be done by dimming all openGL lights ?
Or is there another way ?

thanks.

Texture polygon and blending works, by adjusting the alpha channel.

Originally posted by Asshen:
[b]How can you do a fade to black effect in openGL ?
Is it possible to do using a texture or polygon and blending ?
Or can it be done by dimming all openGL lights ?
Or is there another way ?

thanks.[/b]