Using vsync as a frame rate limiter is not a good idea, because of
different refresh rates between monitors. On a 144Hz monitor, you'd be
running at 144FPS even if that's not actually wanted.
Or, you might want to run at half the refresh rate (like 30FPS on a 60Hz
monitor.)
Vsync and frame limiting are two different, unrelated things.
On 23/03/18 10:29, Paul Lemire wrote:
Qt3D relies on your GPU vsync settings. To reach the maximum number of
FPS, just disable vsync in your driver settings. If on the other hand
you want to reduce FPS, call setSwapInterval on the
QSurfaceFormat::defaultFormat and set it before starting your Qt3D
application with QSurfaceFormat::setDefaultFormat.
Paul
On 03/21/2018 07:46 PM, Xavier Bigand wrote:
If you want to lower the limit you can simply add a pause in the
rendering thread before the swap buffer based on a timer.
I don't really know how to do that with qt3d, but with qt quick there
is some slot like onBeforeRendering and onAfterRendering in which you
should be able to insert a FPS limiter.
In a general way you have to be really careful when doing such things
because it can add some jitters in the animations if the frame-rate
isn't constant due to a lack of precision of the timers or conflicts
with the vsync,...
2018-03-21 17:58 GMT+01:00 Igor Mironchik <igor.mironc...@gmail.com
<mailto:igor.mironc...@gmail.com>>:
On 21.03.2018 19 <tel:21.03.2018%2019>:39, Carlo Ferraresi wrote:
Hi,
I also noticed that PFS seem limited to 60.
I would like to know if there is a way to set this threshold
since even 30 FPS are enough for my application.
Agree, and I would like to have possibility to change the limit,
and to have possibility to set the limit to infinity...
Regards,
C.
On : mercoledì 21 marzo 2018 12:02
A: Qt Project <interest@qt-project.org
<mailto:interest@qt-project.org>>
Oggetto: [Interest] Qt3D FPS limits
Hello,
Does Qt 3D limits FPS by 60? Or FPS is always as much as
possible?
Thank you.
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