Vsync Fullscreen and Double Buffer, incorrect frame rate?

rsn8887 · 07 April 2011, 20:33

First of all, another thanks to Toni for the latest version of WinUAE, it is better than ever!

I may have found a small issue with WinUAE Vsync mode and double buffering.
This might well be a gfx driver issue. I am running XP.

I am using a 100 Hz "Fullscreen + Vsync" mode.

When I use triple buffering, everything is as it should be and WinUAE shows it is running at 50 fps. But when I use double buffering instead of triple buffering, then WinUAE runs at 100 fps instead of 50, as shown by the indicator LED. If I turn off buffering altogether, the fps is fluctuating, but it is always above 100 fps!

Shouldn't it be 50 in all cases?

Retro-Nerd · 07 April 2011, 20:43

Do you use a CRT monitor? Then you should try the AutoVsync option.

07 April 2011, 20:33	#1
rsn8887 Registered User Join Date: Oct 2006 Location: USA Posts: 1,058	Vsync Fullscreen and Double Buffer, incorrect frame rate? First of all, another thanks to Toni for the latest version of WinUAE, it is better than ever! I may have found a small issue with WinUAE Vsync mode and double buffering. This might well be a gfx driver issue. I am running XP. I am using a 100 Hz "Fullscreen + Vsync" mode. When I use triple buffering, everything is as it should be and WinUAE shows it is running at 50 fps. But when I use double buffering instead of triple buffering, then WinUAE runs at 100 fps instead of 50, as shown by the indicator LED. If I turn off buffering altogether, the fps is fluctuating, but it is always above 100 fps! Shouldn't it be 50 in all cases?

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07 April 2011, 20:43	#2
Retro-Nerd Missile Command Champion Join Date: Aug 2005 Location: Germany Age: 52 Posts: 12,435	Do you use a CRT monitor? Then you should try the AutoVsync option.

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