I think it uses opengl, so opengl would have to be fully working and ported to the gp2x first and then it might be pretty slow. I got this information from the FAQ:
"Aside from X, you'll need accelerated OpenGL. The game plays well with relatively modest accelerated 3D hardware - the frame rate is acceptable on thte Radeon Mobility M6 on older laptops, and I've found it playable on HP/Compaq 'business' PCs such as the d510 which has cheap integrated onboard Intel graphics. Of course it plays VERY well on my development system with is a P4 with a GeForce 4 Ti 4200."