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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

Screen rotation for Retropie GUI

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screen rotation
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  • B
    blackshadow
    last edited by 24 Jun 2018, 11:40

    quick copy and paste from another site to save me writing it out lol

    Step 1 – Edit Config.txt

    Start by editing the config.txt file ether via the sd or with:

    sudo nano /boot/config.txt

    Add one of the following lines to the bottom of the file :

    display_rotate=0
    display_rotate=1
    display_rotate=2
    display_rotate=3
    0 is the normal configuration. 1 is 90 degrees. 2 is 180 degress. 3 is 270 degrees.
    If you are using the Official Raspberry Pi touch screen you can use “lcd_rotate” rather than “display_rotate”.

    Save the file by using CTRL-X, Y then ENTER.

    as the site you linked references the 7inch pi screen ill assume thats what your using you can use the lcd_rotate that is mentioned as apposed to display rotate

    P 1 Reply Last reply 16 May 2021, 17:40 Reply Quote 1
    • E
      eclark5483
      last edited by 24 Jun 2018, 14:17

      Cool, figured it was probably just a config edit. Now what about the themes themselves? Will rotating change the proportion ratio of the images? And will I need to modify that as well?

      1 Reply Last reply Reply Quote 0
      • B
        blackshadow
        last edited by 24 Jun 2018, 17:27

        i would suspect so but i dont personally mess with screen rotation myself in any of my projects though so cant really help in that regard

        1 Reply Last reply Reply Quote 0
        • E
          eclark5483
          last edited by 24 Jun 2018, 19:05

          Guess there is only one way to find out, and that's experiment with it. Think I'll do a standard install using the base carbon theme and see what I get. Probably play around with the source code as well. If I find something that works, I'll share that with the retropie team for others to use. If I can't figure it out, well, guess I could always just go with Raspian OS and install MAME that way. Would prefer retropie though, it's a neat little front end/OS.

          M 1 Reply Last reply 24 Jun 2018, 19:25 Reply Quote 0
          • M
            mitu Global Moderator @eclark5483
            last edited by 24 Jun 2018, 19:25

            @eclark5483 RetroPie is not an OS in itelf, it's based on Raspbian (Stretch), so you don't necessarily need to install Raspbian (again) over RetroPie.

            E 1 Reply Last reply 25 Jun 2018, 01:01 Reply Quote 0
            • S
              Sano
              last edited by Sano 24 Jun 2018, 19:40

              Beware, IIRC, rotating screen 90° (or 270°) through display_rotate have a quite important performance impact.
              That said, I don't know if it's still the case.
              See here for example : https://github.com/raspberrypi/firmware/issues/403#issuecomment-86962019

              D J 2 Replies Last reply 24 Jun 2018, 20:55 Reply Quote 0
              • D
                DougA @Sano
                last edited by 24 Jun 2018, 20:55

                @sano I run MAME2003 games in a cabinet with a vertical screen, powered by a Pi 3B , and I haven't seen any performance issues yet.

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                • E
                  eclark5483 @mitu
                  last edited by 25 Jun 2018, 01:01

                  @mitu Yes, I realize that. To clarify, I'd rather use the Raspian OS utilizing the Retropie/Emulationstation front end over just plain ole' Raspian without all the bells and whistles.

                  1 Reply Last reply Reply Quote 0
                  • J
                    jdrassa @Sano
                    last edited by 25 Jun 2018, 02:41

                    @sano said in Screen rotation for Retropie GUI:

                    Beware, IIRC, rotating screen 90° (or 270°) through display_rotate have a quite important performance impact.
                    That said, I don't know if it's still the case.
                    See here for example : https://github.com/raspberrypi/firmware/issues/403#issuecomment-86962019

                    EmulationStation now has support for screen rotation to get around this. Details can be found here.

                    Get latest build of EmulationStation for Windows here

                    E 1 Reply Last reply 25 Jun 2018, 03:27 Reply Quote 2
                    • E
                      eclark5483 @jdrassa
                      last edited by 25 Jun 2018, 03:27

                      @jdrassa One of the things I got from reading that, is that a new theme will indeed need to be made. Can someone point me to the correct folders and files I would need to modify, and what is the theme using? .CSS, .XML? C, etc,etc. Kinda like to research it a bit. Sorry if I'm not well versed in Pi frontends. But I can modify most formats without too much assist. I see many others have authored themes, so I am assuming changing aspects on a custom design wouldn't be too difficult.

                      M 1 Reply Last reply 25 Jun 2018, 03:49 Reply Quote 0
                      • M
                        mitu Global Moderator @eclark5483
                        last edited by 25 Jun 2018, 03:49

                        @eclark5483 https://retropie.org.uk/docs/Creating-Your-Own-EmulationStation-Theme/

                        E 1 Reply Last reply 25 Jun 2018, 04:01 Reply Quote 0
                        • E
                          eclark5483 @mitu
                          last edited by 25 Jun 2018, 04:01

                          @mitu said in Screen rotation for Retropie GUI:

                          @eclark5483 https://retropie.org.uk/docs/Creating-Your-Own-EmulationStation-Theme/

                          Yes, thank you, exactly what I was looking for. Exactly what I figured needed done as well. This is one of the reasons why I inquired in another topic about Retropie in a virtual machine and transferring files. Hey I love coding, great past time, but I prefer doing it on my Windows 10 PC where I have tools at my disposal that I'm more familiar with. I mean, I can squeak by just fine with Linux and all, guess I'm just spoiled by Redmond. But yeah, thanks for the help. I think I can press forward now.

                          M 1 Reply Last reply 25 Jun 2018, 04:07 Reply Quote 0
                          • M
                            mitu Global Moderator @eclark5483
                            last edited by 25 Jun 2018, 04:07

                            @eclark5483 If you're developing on Windows, check out the ES Toolkit, ES runs also on Windows and you can pretty much do your development exclusively on the PC.

                            E 1 Reply Last reply 25 Jun 2018, 05:20 Reply Quote 0
                            • E
                              eclark5483 @mitu
                              last edited by 25 Jun 2018, 05:20

                              @mitu Thank you, downloading v1.1 right now. Will take a quick look at it tonight. I am only using 1 emulator (MAME), so at least my file structure won't be complex and tedious. I'll probably just do a simple mod of the carbon theme for what I need it for. Then maybe later on down the line when I get bored I'll look at completing other systems.

                              1 Reply Last reply Reply Quote 0
                              • E
                                eclark5483
                                last edited by eclark5483 25 Jun 2018, 05:49

                                Hey, can I add code to the ES screen that you get when you are configuring your joystick, to ask the user if they would like to rotate/switch resolution and have their selection sent to the correct theme (without needing source code)? Like I said, I'm just gonna mod the carbon code a bit, make it easier for a "per monitor", maybe add a couple other resolution variables that I wouldn't otherwise need but may prove helpful to others.

                                1 Reply Last reply Reply Quote 0
                                • S
                                  Sano
                                  last edited by 25 Jun 2018, 05:58

                                  @DougA @jdrassa
                                  Thanks for the information guys.
                                  By reading the provided link, I understand that rotating screen via display_rotate (kernel/framebuffer) still has a performance impact, but now ES (as the various emulators do) supports vertical screen (through VG/GL) without this impact.
                                  Good to know.

                                  1 Reply Last reply Reply Quote 0
                                  • JSMJ
                                    JSM
                                    last edited by 14 Aug 2019, 22:07

                                    I know this is a necrobump, but I just wanted to say thanks for this. I was trying to run my Retropie in my Arcade1up Galaga cab vertically using that config.txt rotate optino, but the screen tearing was driving me nuts. Downloaded a fresh Retropie 4.5 image, installed the Dev version of Emulation station, and not everything is perfect (except the retropie configs/run command stuff that are rotated 90 degrees!) Seriously - thanks for bumping this thread and adding more info. It was very helpful.

                                    1 Reply Last reply Reply Quote 0
                                    • T
                                      treki
                                      last edited by 29 Jun 2020, 14:46

                                      I know, it's a old topic. But still an info:

                                      /boot/config.txt
                                      display_rotate=1

                                      works perfect.

                                      I also have to uncomment:

                                      disable_overscan=1

                                      1 Reply Last reply Reply Quote 0
                                      • P
                                        peterisgb @blackshadow
                                        last edited by 16 May 2021, 17:40

                                        @blackshadow said in Screen rotation for Retropie GUI:

                                        quick copy and paste from another site to save me writing it out lol

                                        Step 1 – Edit Config.txt

                                        Start by editing the config.txt file ether via the sd or with:

                                        sudo nano /boot/config.txt

                                        Add one of the following lines to the bottom of the file :

                                        display_rotate=0
                                        display_rotate=1
                                        display_rotate=2
                                        display_rotate=3
                                        0 is the normal configuration. 1 is 90 degrees. 2 is 180 degress. 3 is 270 degrees.
                                        If you are using the Official Raspberry Pi touch screen you can use “lcd_rotate” rather than “display_rotate”.

                                        Save the file by using CTRL-X, Y then ENTER.

                                        as the site you linked references the 7inch pi screen ill assume thats what your using you can use the lcd_rotate that is mentioned as apposed to display rotate

                                        Thanks. This needs the thumbs up as all other routes didnt work. This. Yes. Thanks

                                        1 Reply Last reply Reply Quote 0
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