Partially fix depth issues in multiple games

This should be a better fix for depth issues .It renders depth bit correctly in those games that have issues problem . #2579 

1. Ridge Race 2 (no car invisible issue)
![screen00032](https://f.cloud.github.com/assets/3000282/730896/b11d4430-e25f-11e2-894e-cc1cf9fd85c7.jpg)

2. Gundam AGE Universe (character visible)
![screen00031](https://f.cloud.github.com/assets/3000282/730899/b43e236e-e25f-11e2-8ac9-008474a21989.jpg)

3. Saint Seiya Omega (character visible)
![screen00035](https://f.cloud.github.com/assets/3000282/733466/210494a8-e29f-11e2-98a8-2469def39de2.jpg)