I have found a new problem when using vblank_mode. I have 2 applications:
One of them draws some GL_QUADS and have a usleep in order to get around
27FPS with vblank_mode=0,
and the other draws GL_QUADS all the time, getting around 27FPS with
vblank_mode=0.
If I set vblank_mode=3, the fist one gets 20 FPS (VertRefresh=60) but
the second one remains at 27 FPS.
I think both of them should get 20 FPS with vblank_mode=3... ¿Is it
correct? ¿Where is the error?
Thanks in advance
Agustin Rubio Mingorance wrote:
It works perfectly now.
Thanks.
Dave Airlie wrote:
I want to sync glutSwapBuffers with vblank. I have developed an
application with double buffering that uses glutSwapBuffer to refresh
the screen. The application is getting 132 FPS and I notice some tearing
on the screen. I want to sync swapBuffer with vblank in order to get 75
FPS and avoid tearing. What should I do?
I'm using xorg 7.0 + mesa 6.5 + latest i915 driver from DRI.
I'm not sure if vblank support is in Mesa 6.5.. it is in CVS alright..
you need to sest the env variable vblank_mode=3 to force vblank
Dave.
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