https://plus.google.com/101473924494271635476/posts/2LDwW4xz...
(CCL mapping the framebuffer into memory, using existing Lisp libraries to draw graphics into it).
(CCL mapping the framebuffer into memory, using existing Lisp libraries to draw graphics into it).
I have not looked into OpenGL, but it'd certainly be good to have a faster way to draw on the screen. VECTO and bitmap copying is not suitable for anything that is supposed to move.
This is my experience as well. You can mmap /dev/fb0 and draw on it, and you can use something like directfb or even Cairo if you're not into lisp, but if you want to do even trivial 2D acceleration you are out of luck.
Granted, "for educational reasons" is a valid subject for the Pi. Get that old Abrash book out and let the OpenGL-spoiled kids feel the pain.