How to avoid tearing with E-UAE?

Maverick · 21 October 2005, 12:14

I'm using X-Windows to run E-UAE fullscreen on an arcade monitor. I calculated a modeline with a vertical frequency of 50Hz which suits well to the repeat frequency of a PAL Amiga. But even though I have a perfect modeline there're tearing effects when I'm playing horizontally scrolling games. For me it means that the emulated amiga and the monitor do not share the same Vsync. The solution in XMAME seems to be to compile it for DGA use which is able to detect the Vsync (I'll try it during the weekend) I read that UAE can also use DGA but I don't know how to enable it. I probably have to compile the whole stuff with a special option, but which?

Maverick · 25 October 2005, 15:44

No one? However, this seems to be the same with the original uae, may be you have tried it with this one.

keropi · 25 October 2005, 21:56

OK, I don't know about e-uae , but does it have a vsync option? if yes turn it on!
also, how may fps does it display? 50fps? or 60fps? just use a refresh rate of 100hz or 120hz.... bam! no more tearing!

Maverick · 26 October 2005, 08:43

My arcade monitor is only able to handle refresh rates between 45 and 65 Hz.
Even though I found out how to enable the DGA mode (you have to run ./configure --enable-dga) I'm not sure if this really solves the tearing problem and I can't find anything about e-uae (or the original uae) and vsync.

keropi · 26 October 2005, 11:38

then get a refresh rate same as the fps...

Maverick · 26 October 2005, 11:52

That's what I did both have the same refresh rate, my only problem is how to synchronize them. May be this DGA mode helps. I'll try it as soon as I have time.

keropi · 26 October 2005, 12:09

that's what vsync is for... V(ertical)Sync(hronization) find the switch that enables it!

Maverick · 26 October 2005, 13:41

Yeah, I know, but to find the switch in e-uae is exactly the problem. I heard DGA is capable of synchronizing, so I hope activating it will solve the problem.

thomas · 26 October 2005, 14:54

Quote:

Yeah, I know, but to find the switch in e-uae is exactly the problem.

Use WinUAE to save one config file with vsync on and one with it disabled, then compare the config files.

keropi · 26 October 2005, 20:50

btw, what is the DGA ????

Toni Wilen · 26 October 2005, 20:57

AFAIK E-UAE does not have vsync support yet.

andreas · 27 October 2005, 04:14

... and WinUAE has full-screen VSync support only!
There is no effect (yet) in windowed mode...

@Toni: proposal for tiny cosmetical fix: maybe disable VSync checkbox in GUI if windowed mode is active (i. e. Full Screen is not checked).

Maverick · 27 October 2005, 09:03

Quote:

Use WinUAE to save one config file with vsync on and one with it disabled, then compare the config files.

Yeah, could be worth trying it.

Quote:

btw, what is the DGA ????

DGA is the Direct Graphics Access and should be something similar as DirectX for the windows world. In the XMAME documentation is stated that with DGA it is able to use the vsync, so I hoped this was also valid for E-UAE.

Quote:

AFAIK E-UAE does not have vsync support yet.

This could be the reason why I'm not able to find any information about it.

Maverick · 28 October 2005, 07:45

DGA doesn't work. When I use it with UAE my screen freezes and I have to kill the X-server to make it work again.
XMAME has no problem with DGA so it must be UAE related.

mtb · 02 November 2005, 21:30

Quote:

Originally Posted by Maverick

DGA doesn't work. When I use it with UAE my screen freezes and I have to kill the X-server to make it work again.
XMAME has no problem with DGA so it must be UAE related.

To say the truth a lot of time has passed since i used dga, but if you are interested ask Drummond.

But before i suggest you to try to use SDL ( you need to recompile ). It's by far the best solution atm, if your XF86Config-4 or xorg.conf file contains the right resolutions and modelines SDL will use them.

Maverick · 03 November 2005, 08:12

Quote:

But before i suggest you to try to use SDL

That's what I'm doing at the moment and it works quite well. The only thing that bothers me a bit is this tearing effect. Is it possbile to have a VSYNC for the SDL fullscreen or is it really not supported by E-UAE at the moment?

mtb · 03 November 2005, 18:46

Quote:

That's what I'm doing at the moment and it works quite well. The only thing that bothers me a bit is this tearing effect. Is it possbile to have a VSYNC for the SDL fullscreen or is it really not supported by E-UAE at the moment?

I don't know exactly, i suggest you to ask Drummond on the uae freelist ml.

Maverick · 04 November 2005, 14:17

Quote:

on the uae freelist ml

Do you mean this board http://uae.back2roots.org/ ?

mtb · 04 November 2005, 18:48

No, see http://www.freelists.org/list/uae

Maverick · 06 November 2005, 18:18

OK, thanks I'll do it.

21 October 2005, 12:14	#1
Maverick Registered User Join Date: May 2005 Location: Solingen / Germany Age: 54 Posts: 59	How to avoid tearing with E-UAE? I'm using X-Windows to run E-UAE fullscreen on an arcade monitor. I calculated a modeline with a vertical frequency of 50Hz which suits well to the repeat frequency of a PAL Amiga. But even though I have a perfect modeline there're tearing effects when I'm playing horizontally scrolling games. For me it means that the emulated amiga and the monitor do not share the same Vsync. The solution in XMAME seems to be to compile it for DGA use which is able to detect the Vsync (I'll try it during the weekend) I read that UAE can also use DGA but I don't know how to enable it. I probably have to compile the whole stuff with a special option, but which?

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25 October 2005, 15:44	#2
Maverick Registered User Join Date: May 2005 Location: Solingen / Germany Age: 54 Posts: 59	No one? However, this seems to be the same with the original uae, may be you have tried it with this one.

25 October 2005, 21:56	#3
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	OK, I don't know about e-uae , but does it have a vsync option? if yes turn it on! also, how may fps does it display? 50fps? or 60fps? just use a refresh rate of 100hz or 120hz.... bam! no more tearing!

26 October 2005, 08:43	#4
Maverick Registered User Join Date: May 2005 Location: Solingen / Germany Age: 54 Posts: 59	My arcade monitor is only able to handle refresh rates between 45 and 65 Hz. Even though I found out how to enable the DGA mode (you have to run ./configure --enable-dga) I'm not sure if this really solves the tearing problem and I can't find anything about e-uae (or the original uae) and vsync.

26 October 2005, 11:38	#5
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	then get a refresh rate same as the fps...

26 October 2005, 11:52	#6
Maverick Registered User Join Date: May 2005 Location: Solingen / Germany Age: 54 Posts: 59	That's what I did both have the same refresh rate, my only problem is how to synchronize them. May be this DGA mode helps. I'll try it as soon as I have time.

26 October 2005, 12:09	#7
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	that's what vsync is for... V(ertical)Sync(hronization) find the switch that enables it!

26 October 2005, 13:41	#8
Maverick Registered User Join Date: May 2005 Location: Solingen / Germany Age: 54 Posts: 59	Yeah, I know, but to find the switch in e-uae is exactly the problem. I heard DGA is capable of synchronizing, so I hope activating it will solve the problem.

26 October 2005, 20:50	#10
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	btw, what is the DGA ????

26 October 2005, 20:57	#11
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,507	AFAIK E-UAE does not have vsync support yet.

27 October 2005, 04:14	#12
andreas Zone Friend Join Date: Jun 2001 Location: Germany Age: 50 Posts: 5,857	... and WinUAE has full-screen VSync support only! There is no effect (yet) in windowed mode... @Toni: proposal for tiny cosmetical fix: maybe disable VSync checkbox in GUI if windowed mode is active (i. e. Full Screen is not checked).

28 October 2005, 07:45	#14
Maverick Registered User Join Date: May 2005 Location: Solingen / Germany Age: 54 Posts: 59	DGA doesn't work. When I use it with UAE my screen freezes and I have to kill the X-server to make it work again. XMAME has no problem with DGA so it must be UAE related.

04 November 2005, 18:48	#19
mtb Registered User Join Date: Sep 2002 Location: Italy Age: 40 Posts: 466	No, see http://www.freelists.org/list/uae

06 November 2005, 18:18	#20
Maverick Registered User Join Date: May 2005 Location: Solingen / Germany Age: 54 Posts: 59	OK, thanks I'll do it.

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