Small fix to framebuffer sizing

This try to fix the previously video flickering in Wildarm XF 

Meanwhile , i try to focus to test all those items that we may break .

1. TOPX title , town/worldmap and final credit .
2. Wildarm in-game battle
3. Midnight Club 3 
4. Kingdom Heart in-game , cutscenes and character shadow
5. FF crisis character shadow.
6. MSG peace maker in-game and cutscene

Hoepfully no regression this time .