[Development] Late API addition in QScreen for 5.0

Fredrik Höglund fredrik at kde.org
Tue May 8 21:01:51 CEST 2012

On Friday 04 May 2012, Samuel Rødal wrote:
> On Linux, it's all up to the graphics driver in my experience. With the
> binary Nvidia driver the only reliable way I've seen of enabling vsync
> has been to do "export __GL_SYNC_TO_VBLANK=1" before launching an
> application. AMD's Catalyst control panel now has an option called "Tear
> Free Desktop" which is supposed to also sync rendering, but when I've
> tried it I've still gotten tearing, just now it's in the same location
> each frame, which looks even worse.

Doesn't the NVIDIA driver respect the swap interval set with

I would expect the environment variable to set the default interval
to 1, or override any attempts by the application to set it to 0.


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