I have a question, which is may be simple to answer.
I updated the driver of my Nvidia graphics card. The old driver supported page flipping and block transfer for double buffering and I used block transfer. I wrote some OGL programs which use the old picture (I didn’t clear the color buffer) for blending to get some nice effects. With page flipping I blend only with every other old picture and get some annoying flickering.
In the new drivers you can’t choose anymore and you always have page flipping.
Now my question: is there any application specific way to force block transfer? Or is there any other fast way to preserve the old screen contents as a background for the next picture?
Thank you in advance for any answers!
P.S.: Geforce4 MX, WinXP SP2