Comment 55 for bug 1615871
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#55 |
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(In reply to Dave Airlie from comment #37)
> 00:50 < keithp> So, they can't use a pixmap because GL sucks, I assume
> 00:50 < airlied> yeah most likely a GL suckage
[Citation needed]
Why exactly can't they use pixmaps for this?
> 00:53 < keithp> DRI2 behaviour used to be unthrottled entirely
> 00:53 < keithp> you'd get infinite FPS
> 00:54 < keithp> which kinda sucked when the screen saver fired and your
> CPU/GPU utilization went to 100%
Actually, the DRI2 behaviour depends on the driver. The -ati/amdgpu drivers probably synchronize to the same CRTC as with DRI3, and extrapolate the refresh timings using timers while the CRTC is off.