PSP Clipping

As everybody can see in the old quake 2 screenshots or in PSmonkey's Iris (what is a really nice game I think) the clipping on the PSP is mess.

I fake the clipping in Quake 2 and you don't notice the clipping errors anymore. But it is better to code a real fast clipping. I'm working on a hybrid clipping which does the most work in hardware and some software stuff. Only 3% of the polygons make problems so I want to add some fast clipping tests and send the polygon into the render pipeline. If the test fails the polygon is clipped manually.
It is not finished but it is the best way in my mind.

Any better ideas?

mczonk im one of the judges and i gave ur game a 9 becucase i LOVED the graphics and everythign only thing dat ticked me ooff was sounds but ne ways i loved it