Screen Tearing

[sno0ks]

Anyone know how to fix screen tearing? Happens on all my dosbox games and is especially noticeable in the DOOM titles. I'm using Chocolate DOOM for all of them. I can't find an fps lock or v-sync option or anything.

[-$ilver-]

Define screen tearing.

[Hyper Sonic]

Tearing is when it only draws part of a frame to the screen, then draws part of the next frame on the rest of the screen. Triple buffering should get rid of it..

[AmethystViper]

Originally posted by 3DMightyMouse:

Tearing is when it only draws part of a frame to the screen, then draws part of the next frame on the rest of the screen. Triple buffering should get rid of it..

Triple buffering, although DOSBox uses double buffering, I believe was part of the cause of Doom games on Steam failing to load because it was known to have adverse effects on certain games, and in classic Doom's case on DOSBox, causes it to freeze at the title screen, and yet the Steam release of classic Doom uses it anyway by default...

I and other players have made guides about this issue for those that want to play classic Doom on their PCs but there's no way to fix the screen tearing within official builds of DOSBox, you'll need an official SVN version of it to apply V-sync. I don't sure how sno0ks is having screen tearing issues with Chocolate Doom, I've just ran a quick test with it and I have not noticed any screen tearing, and I did not force V-sync on my GPU or anything for Chocolate Doom.

[-$ilver-]

A little off topic, since this is for a totally different game, but the demo for Quake 3 Online the title screen has what I call "shadows" that trail across the screen where ever the mouse pointer goes and stays there, over lapping each other.

Trying to navigate through all that is trial and error and eventually I just stopped and never did buy the game. Is this the same thing or are we talking about two totally different things?

[TehSpoopyKitteh]

Originally posted by 3DMightyMouse:

Tearing is when it only draws part of a frame to the screen, then draws part of the next frame on the rest of the screen. Triple buffering should get rid of it..

It sometrimes does not get rid of it. Using Double Buffered VSync settings in ggame helped me out a lot.

[sno0ks]

Sorry to rez an old post, but I figured I'd share the solution if anyone finds this on Google:

I think I managed to fix the screen tearing by setting v-sync+triple buffering through the vgu control panel, but I had to do it to all of the exe files in the base directory to get it to work. I had to add the dosbox.exe, chocolate-doom.exe, and DOOM.exe to the nvidia control panel and set each one of them to v-sync and triple buffering on. I tested it on this and DOOM II, and tearing seems to have disappeared in both. It seems like there's still a little bit of it, but basically imperceptible. So glad I can finally play these games.