OpenGL tearing on two headed display
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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