Hi, I'm Lucas. I'm working with a PXA320 processor, based in the ARMV4i core. I'm developing an aplication that uses Opengl ES 1.x. When I use the function Perspective and LookAt, of Glu library, the Opengl doesn't display correctly. The screen shows figures of different colors, but when I look on GetError function, it allways returns zero. After a while, the image freezes. I don`t know what is the problem. Please help me, I need to emulate a 3d enviroment.
Please look at the following images I captured

Top view (incorrect):


From an angle view(incorrect):


Render error: