| Author | Message | ||
     T.F. (Tobse342) New member Username: Tobse342 Post Number: 1 Registered: 11-2007 Rating: N/A |
Hello everyone, I am involved in setting up a stereo projection wall using two identical projectors with polarization filters and corresponding glasses. For this, we currently evaluate video adapters. Currently our software simply renders the two images next to each other on the same screen which is distributed to both projectors via the Linux NVIDIA driver and TwinView. My problem is that I'm not sure if quad buffering is something we should consider. To my understanding, quad buffering can be used in conjunction with shutter glasses to allow for a faster frame rate. Can this feature also be utilized to speed our setup as described above? Of course, our software would have to be modified to make use of quad buffering. | ||
| lcdvasrm (Lcdvasrm) New member Username: Lcdvasrm Post Number: 1 Registered: 5-2008 Rating: N/A |
I think quadbuffering is interesting essentially in the case were you have only one projector, with page flipping for 3D. The quad buffering technique has one interest I see : in case the software didn't have the time to finish the rendering of the new view, it can still display the former one for both eyes because they were not overwritten in the back buffers. RENDERED-BUFFERS SHOW L1,empty,empty,empty (wait) L1,R1,empty,empty (show L1) L1,R1,L2partial,empty (show R1) L1,R1,L2,R2partial (still show L1) L3,R1,L2,R2, (still show R1) L3,R3,L2,R2, (show L3) L3,R3,L4,R2 (show R3) L3,R3,L4,R4partial (still show L3) L5,R3,L4,R4 (still show R3) etc...(that's the idea) And thus, if your rendering engine cannot cope with the frame rate it can still display consistant 3D at half the frame rate. (Message edited by lcdvasrm on May 29, 2008) |
