I made an image-morphing-app back in 1998, using 3dfx
to morph in realtime. It works excellent with OpenGlide
except for dumping the images to disk. The images all
comes out black.
It worked with some other Glide Wrapper, but
that one didn't support alpha very well...
Sadly, I've seem to have lost my source, but
I probably used grLfbReadRegion()...