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BGFX speed locked to 100%
#385001 - 01/14/20 01:27 AM
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Hi,
I'm experimenting with BGFX and noticed that, with any backend, speed is locked to 100%, in other words, speed toggle doesn't work (only with BGFX).
It's a bug or I am doing somehing wrong?
Thanks
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Re: BGFX speed locked to 100%
[Re: famawizard]
#385006 - 01/14/20 02:25 PM
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> Hi,
>
> I'm experimenting with BGFX and noticed that, with any backend, speed is locked to
> 100%, in other words, speed toggle doesn't work (only with BGFX).
>
> It's a bug or I am doing somehing wrong?
>
> Thanks
No, I've noticed it randomly seems to do this too, sometimes it will allow you to unthrottle, sometimes it won't.
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Tafoid |
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Re: BGFX speed locked to 100%
[Re: Haze]
#385007 - 01/14/20 02:58 PM
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> > Hi,
> >
> > I'm experimenting with BGFX and noticed that, with any backend, speed is locked to
> > 100%, in other words, speed toggle doesn't work (only with BGFX).
> >
> > It's a bug or I am doing somehing wrong?
> >
> > Thanks
>
> No, I've noticed it randomly seems to do this too, sometimes it will allow you to
> unthrottle, sometimes it won't.
Not sure if related to actual video card settings, I've come across it with OPENGL in the past at least where Windows profile settings for the card basically locked FPS.
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Re: BGFX speed locked to 100%
[Re: Tafoid]
#385009 - 01/14/20 04:20 PM
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Thanks for your replies.
This thing happens in all me pcs, with different cpus and video cards (nvidia 970, 2070 and integrated intel) but the same os (latest version of w10).
I can confirm that unthrottle works and it's possible to force a game at , ie, 50% and, pressing F10, it would reach (but not go higher) 100%.
I have tested the last two mame versions, starting from clean configurations too.
The problem is not present in much older versions (from 1 or 2 years ago).
Another thing that I have noticed is that BGFX also blocks vertical frequency switching, for example, in D3D mode R-type switch to 55 Hz but in BGFX it stays at 60Hz.
Even manually set frequency to values different from 60Hz fails.
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Re: BGFX speed locked to 100%
[Re: Tafoid]
#385010 - 01/14/20 04:24 PM
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> > > Hi,
> > >
> > > I'm experimenting with BGFX and noticed that, with any backend, speed is locked
> to
> > > 100%, in other words, speed toggle doesn't work (only with BGFX).
> > >
> > > It's a bug or I am doing somehing wrong?
> > >
> > > Thanks
> >
> > No, I've noticed it randomly seems to do this too, sometimes it will allow you to
> > unthrottle, sometimes it won't.
>
> Not sure if related to actual video card settings, I've come across it with OPENGL in
> the past at least where Windows profile settings for the card basically locked FPS.
yeah, OpenGL has always behaved like that, it's one reason I've been unable to recommend it. BGFX now randomly acts like that in fullscreen mode.
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