Getting DosBox in fullscreen?

tekn0

Hello, I have tried various settings in the dosbox-SVN.conf to get true full screen mode, but no matter what settings I use it's either one of two resolutions. Very small, or not full. I was able to get scan lines working but I just cant get it full screen.

If I press Control+F1 on my keyboard I get a mapping screen that does in fact appear to be in fullscreen, just not the game.

I have also read the wiki and suggested tutorials on that page but did not find my answer.
https://github.com/retropie/retropie-setup/wiki/PC

Thank you in advance for any suggestions and help.

Edit. I got this working with scanlines. my config file is here: http://pastebin.com/UXET46HP
Replace your /opt/retropie/configs/pc/dosbox-SVN.conf with the one above.

Then set dispmanx as the dosbox driver in retropie setup.

edmaul69

@tekn0 i have scanlines with no issues. These are the only settings you need for fullscreen and scanlines. If you open up /opt/retropie/configs/dosbox-SVN.conf you can set

Fullscreen=true

And

Aspect=true

you will get fullscreen. Leave fullscreen resolution at original. And then for scaler to get scanlines you can set scaler to tv2x, tv3x, scan2x or scan3x. Whatever looks best once you are in full screen. I use:

Scaler=tv2x

edmaul69

@tekn0 also you do not want to set full double. Once i set fullscreen correctly all my screen tearing issues went away.

tekn0

I actually found setting Aspect=false and enabling dispmanx driver for dosbox in retopie setup gives the best image with proper scanlines. Not exactly sure why. As you would think integer scaling would be off, but everything looks perfect for the games I have tried.

edmaul69

@tekn0 so what did you set the scaler to? Im always willing to find/use a better method

tekn0

@edmaul69 I updated the pastbin http://pastebin.com/UXET46HP

I ended up setting it to scan2x.

Im on a 1080p display.

goodpi31

@tekn0 Does that make it fullscreen for you?

I'm also on a 1080p display- and even though I managed to increase the screensize of the dosbox (I think I used normal3x or normal2x), it's still not fullscreen as it would using a pc with dosbox installed.

edmaul69

@goodpi31 try setting

Aspect=true

It is the only way i can get it on my setup. Im using a tv that is 1024x768 however.

goodpi31

@edmaul69 Yep that did the trick. Thanks :)

edmaul69

@goodpi31 you're welcome

tekn0

@edmaul69

Interesting, setting that to false is what works for me in full screen. Testing sierra games and dune2.

edmaul69

@tekn0 yeah i set dispmanx as you said. I looked at your config and it is all the same as mine except for the aspect. I was testing on retro city rampage and a couple leisure suit larry's

tekn0

@edmaul69 It is a little odd. I just updated everything in retropie including kernel updates as of 1/20/2017. I started with a fresh dosbox and the default conf file. Then enabled dispmanx in retropie-setup and coped over my conf file from the pastbin above.

Instant full screen at 1080p with what looks like proper integer scaled scanlines. Perfect. Setting aspect to false is really the key for me. Not sure how or why. I just have a standard 1080p led tv and standard hdmi cable.

LasagnaDevil

Sorry for the Necrobump, but now I got DOSBOX to work, I would like to add a
CRT-like filter for it. Round corners (not just overlays), and the stuff. I'm editing my dosbox-SVN.conf, and added:

fullscreen=false
fulldouble=false
fullresolution=original
windowresolution=original
output=overlay
autolock=true
sensitivity=100
waitonerror=true
priority=higher,normal
mapperfile=mapper-SVN.map
usescancodes=false
pixelshader=CRT-geom-curved.fx

And later in the file:

[render]
frameskip=0
aspect=true
scaler=hardware2x

So... It's not working. No error output, just nothing at all. I dunno if it's the shader file (where do I even put it?), the fact it's not supported, or what.

Is there a way to make this work? :)

edmaul69

@lasagnadevil not sure about adding shaders. If you read through everything in the config it tells you what to change for scan2x or scan3x i think it is.

LasagnaDevil

Indeed, but I found this:

https://forums.duke4.net/topic/7387-crt-screen-imitation-in-dosbox/

It kinda allows for a CRT-fishbowl-shaped effect. :D

edmaul69

@lasagnadevil looking at it, that appears to be for dosbox daum, which can do more than the standard dosbox. If you get the curvature to work let me know.