Low level graphics Raspberry Pi: framebuffer

http://raspberrycompote.blogspot.nl/2012/12/low-level-graphics-on-raspberry-pi-part_9509.html

Basic, get screen info

http://raspberrycompote.blogspot.nl/2013/01/low-level-graphics-on-raspberry-pi-part.html

PArt 2 goes into actually drawing

http://raspberrycompote.blogspot.nl/2013/01/low-level-graphics-on-raspberry-pi-part_22.html

The details of the mapped display memory

and so on

http://raspberrycompote.blogspot.nl/2013/04/low-level-graphics-on-raspberry-pi-part.html

All code here: https://github.com/rst-/raspberry-compote

Related posts:

Experiments and boards
A Raspberry Pi  or Arduino is a perfect companion for experiments, but you need some hardware support during development...
Raspberry remote access
On this page I will show you how to access the Raspberry Pi in a Windows environment. - Acces the home directory on t...
Freepascal and Lazarus installation on RPi
A page describing how to get the latest Freepascal and Lazarus development systems on the Raspberry Pi in optimal form...
Tiny LCD Screens
Over the years I have collected several tiny touch LCD screens for the Raspberry Pi which are based on sending the frame...