Graphics library for embedded systems without Linux? [closed]

Answer 1

(old question, but I wanted to post my findings on the subject)

For high-quality graphics, Anti-Grain Geometry is a good choice. It compiles to about 50kB and can be customized to write into all kinds of framebuffers and rendering devices: http://www.antigrain.com/

For user interface, Gwen appears a good choice. It is easily portable and can be customized to render either bitmap skinned controls or just rectangle/circle/line forms: https://github.com/garrynewman/GWEN

Then if you are also selecting an RTOS, NuttX has it's own graphics subsystem and widget toolkit: http://nuttx.sourceforge.net/