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-   -   OpenGL tearing on two headed display (http://www.nvnews.net/vbulletin/showthread.php?t=168936)

EricE 11-21-11 11:00 AM

OpenGL tearing on two headed display
1 Attachment(s)
We are currently experiencing issues rendering video using OpenGL to multiple windows on a two headed display using TwinView on a PNY Quadro FX-3800 card. We use glXSwapInterval to synchronize the frame buffer swap with vblank, but are still unable to get tear-free rendering in all three windows. I've attached some sample source code which opens up three windows and renders a vertical black bar moving across the window which makes the tearing apparent as well as the xorg.conf that we are using. Any suggestions would be appreciated.


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