> If that was the only concern against it, then I'd say it is acceptable.
> But there are some other concerns, also it seems to me xcbgrab can be
> improved to reach the same smoothness as this attempt, and that was the
> main distinctive feature of it. With that advantage lost, I'd say fixing
> xcbgrab is the better bet.
I would think yes - that would be a good outcome - but please note
xcbgrab doesn't seem to work when a window is borderless and/or full
screen - which sorts of defeat the purpose of capturing 3d apps running
full screen?
Do you have a patch for xcbgrab? I will try and capture similar video.
If the patch is about the av_sleep(half_expected_time), the code of
xcomposite uses the very same logic (heavily inspired by it), but it
works smoother - it would be interesting to see CPU usage of xcbgrab
after the patch.
On 20/05/2020 07:28, Marton Balint wrote:
On Tue, 19 May 2020, Nicolas George wrote:
Marton Balint (12020-05-19):
As Nicolas mentioned, kmsgrab practically requires root. Also, I
tried it on
Intel half a year ago on Ubuntu 18.04, and it simply does not work
correctly. There were crashes, there were random failures with
cryptic error
messages, usually at the beginning of the capture, somtimes in the
middle of
it. And the captured frame was missing some of the drawn opengl
primitives,
it looked like kmsgrab grabbed the frame from the back buffer and not
the
front.
So kmsgab on Intel is a no-no for me.
Thanks for the confirmation.
Could you weigh in on the issue of filters/devices changing the OpenGL
global state, please?
If that was the only concern against it, then I'd say it is acceptable.
But there are some other concerns, also it seems to me xcbgrab can be
improved to reach the same smoothness as this attempt, and that was the
main distinctive feature of it. With that advantage lost, I'd say fixing
xcbgrab is the better bet.
Regards,
Marton
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