GMath3D is a graphics library for GP2x. Includes 2D, 3D, Text, Time, Joystick, and Sound (ogg) functions. Includes working example code, and .gpe files. Now Included a Win32 port to test your programs before compiling for GP2x. Win32 tester version includes 2D, 3D, Text, and Joystick functions. Now supports textures upto 128×128 bitmaps.

http://www.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,19,2349