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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    Getting DosBox in fullscreen?

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    dosbox
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    • T
      tekn0
      last edited by 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.

      edmaul69E 2 Replies Last reply Reply Quote 1
      • edmaul69E
        edmaul69 @tekn0
        last edited by 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
        
        1 Reply Last reply Reply Quote 1
        • edmaul69E
          edmaul69 @tekn0
          last edited by edmaul69

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

          1 Reply Last reply Reply Quote 0
          • T
            tekn0
            last edited by 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.

            edmaul69E 1 Reply Last reply Reply Quote 0
            • edmaul69E
              edmaul69 @tekn0
              last edited by edmaul69

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

              T 1 Reply Last reply Reply Quote 0
              • T
                tekn0 @edmaul69
                last edited by

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

                I ended up setting it to scan2x.

                Im on a 1080p display.

                G 1 Reply Last reply Reply Quote 0
                • G
                  goodpi31 @tekn0
                  last edited by 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.

                  edmaul69E 1 Reply Last reply Reply Quote 0
                  • edmaul69E
                    edmaul69 @goodpi31
                    last edited by 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.

                    G T 2 Replies Last reply Reply Quote 0
                    • G
                      goodpi31 @edmaul69
                      last edited by

                      @edmaul69 Yep that did the trick. Thanks :)

                      edmaul69E 1 Reply Last reply Reply Quote 0
                      • edmaul69E
                        edmaul69 @goodpi31
                        last edited by edmaul69

                        @goodpi31 you're welcome

                        1 Reply Last reply Reply Quote 0
                        • T
                          tekn0 @edmaul69
                          last edited by

                          @edmaul69

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

                          edmaul69E 1 Reply Last reply Reply Quote 0
                          • edmaul69E
                            edmaul69 @tekn0
                            last edited by 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

                            T 1 Reply Last reply Reply Quote 0
                            • T
                              tekn0 @edmaul69
                              last edited by

                              @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.

                              1 Reply Last reply Reply Quote 0
                              • L
                                LasagnaDevil
                                last edited by

                                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? :)

                                edmaul69E 1 Reply Last reply Reply Quote 0
                                • edmaul69E
                                  edmaul69 @LasagnaDevil
                                  last edited by

                                  @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.

                                  1 Reply Last reply Reply Quote 0
                                  • L
                                    LasagnaDevil
                                    last edited by

                                    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

                                    edmaul69E 1 Reply Last reply Reply Quote 0
                                    • edmaul69E
                                      edmaul69 @LasagnaDevil
                                      last edited by

                                      @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.

                                      1 Reply Last reply Reply Quote 0
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