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  • I just built a handheld system that I designed to be used in both standard and vertical/tate modes. Is it possible to make a config file for each rom that I want to rotate?

    Thanks in advance and here are some images of it.

    2_1503823475487_Message_1503820900860.jpg 1_1503823475487_20170827_043036_Burst01.jpg 0_1503823475487_20170827_043047_Burst01.jpg


  • hidden behind the "show advanced options" toggle in settings > user interface > menu
    Rotation setting . Then save rom config and you are good to go. I dont have libretro on hand so this is from memory


  • @hex Thanks I will try that out right now and post back.


  • @hex Yeah so it works but changes rotation globally how do I do it per rom? I dont see a save config for rom or anything like that.


  • if you wan to do if in a per rom basis you need to build a config file for the rom zip file

    example
    Atari Lynx has 5 games that run on a vertical mode
    one example

    if you want to play this on wall mounted TV you either need to rotate the TV or you need to rotate the video screen
    you do this by building a per rom Cfg file and place it in the rom folder

    RomName.exennsion.Cfg

    rom name = NFL Football (USA, Europe)
    rom is zipped --> extension = zip

    name of config file
    NFL Football (USA, Europe).zip.Cfg

    inside the Cfg file you need to rotate the video

    video_allow_rotate = "true"
    video_rotation = "1"

    1=90 CCW
    2= 180 CCW
    3= 270 CCW

    this is my full CFG for the NFL Football rom
    with
    enabled Overlay
    screen sized down to match overly
    video rotated

    input_overlay = /opt/retropie/emulators/retroarch/overlays/1080p/AtaryLynxVertical_1080p.cfg
    input_overlay_enable = true
    input_overlay_opacity = 0.700000
    input_overlay_scale = 1.000000

    video_allow_rotate = "true"
    video_rotation = "1"

    custom_viewport_width = "645"
    custom_viewport_height = "1013"
    custom_viewport_x = "642"
    custom_viewport_y = "33"

    aspect_ratio_index = "22"

    video_scale_integer = True


  • Thank you and how do I set the Aspect ratio to 4:3 in the config? I know how to do it via the UI.


  • aspect_ratio_index = "22"
    video_scale_integer = True

    I used 22 since I was shrinking the video to a custom size. You will also need to add the video_scale_integer
    if you want the aspect_ratio_index to be used

    or Not, I'm not sure I never set
    aspect_ratio_index = "0"

    experiment by setting video_scale_integer equal to true and false
    and see what works for you
    the only thing I can tell you is that the video size and location will not be shifted to the correct position if you set
    video_scale_integer = false

    here is a full list

    0: 4:3
    1: 16:9
    2: 16:10
    3: 16:15
    4: 1:1
    5: 2:1
    6: 3:2
    7: 3:4
    8: 4:1
    9: 4:4
    10: 5:4
    11: 6:5
    12: 7:9
    13: 8:3
    14: 8:7
    15: 19:12
    16: 19:14
    17: 30:17
    18: 32:9
    19: config (video_aspect_ratio setting)
    20: 10:9 (1:1 PAR)
    21: Core Provided
    22: Custom


  • No. You can just change settings and save the config only for the rom from retroarch itself.


  • @hex Sorry wasnt seeing that option to save a config just for the the rom loaded.


  • @32assassin Great, is it possible to put control scheme changes into this config file as well?


  • Open Game > Retroacrch > Main menu > Quick Menu > Save game overriddes


  • @hex Couldnt get that to work @32assassin 's method works and it follows this official guide here https://github.com/RetroPie/RetroPie-Setup/wiki/RetroArch-Configuration


  • I edited the setting name. Did you check the new one or the old one?


  • @hex didn't try the new one will try again tomorrow. Is it possible to set a per game controller config this way as well?


  • I never had the need to remap any of my controller inputs.

    the per rom config files bypasses the default retroarch.cfg files
    the retroarch.cfg files have a call for the default controls

    call for FBA key mapping
    input_remapping_directory = "/opt/retropie/configs/fba/"

    I"m sure you could add custom key mapping Cfg file and the call to it in your rom specific Cfg file
    such as
    input_remapping_directory = "/opt/retropie/configs/fba/custom.cfg"

    or you could just add the custom settings to your rom specific cfg file
    https://github.com/RetroPie/RetroPie-Setup/wiki/RetroArch-Configuration#hardcoded-configurations

    scroll down to
    Example Per-System Control Override retroarch.cfg
    you will need to update the path for each system
    /opt/retropie/configs/megadrive/

    Settings made here will only override settings in the global retroarch.cfg if placed above the #include line

    input_remapping_directory = /opt/retropie/configs/megadrive/

    input_player1_joypad_index = 0
    input_player1_b_btn = 2
    input_player1_a_btn = 1
    input_player1_y_btn = 3
    input_player1_x_btn = 0
    input_player1_l_btn = 4
    input_player1_r_btn = 5
    input_player1_start_btn = 9
    input_player1_select_btn = 8
    input_player2_joypad_index = 1
    input_player2_b_btn = 2
    input_player2_a_btn = 1
    input_player2_y_btn = 3
    input_player2_x_btn = 0
    input_player2_l_btn = 4
    input_player2_r_btn = 5
    input_player2_start_btn = 9
    input_player2_select_btn = 8

    Axis for RetroArch D-Pad.

    Needs to be either '+' or '-' in the first character signaling either positive or negative direction of the axis, then the axis number.

    input_player1_up_axis = -1
    input_player1_down_axis = +1
    input_player1_left_axis = -0
    input_player1_right_axis = +0
    input_player2_up_axis = -1
    input_player2_down_axis = +1
    input_player2_left_axis = -0
    input_player2_right_axis = +0

    #Hotkeys- Hotkeys enable you to press a combination of buttons to do such things as exit emulators, save states,

    and load states, as well as any other functionality in an emulator. (In the example below 8 is the select key

    and 9 is the start key so when I hold down select and press start it will exit the emulator.)

    input_enable_hotkey_btn = 8
    input_exit_emulator_btn = 9
    input_save_state_btn = 5
    input_load_state_btn = 4
    input_menu_toggle_btn = 0
    input_state_slot_increase_axis = +0
    input_state_slot_decrease_axis = -0


    of course that you can avoid all this by simply loading a rom in to FBA/MAME
    hit the TAB key
    and modify your keys (and Video) inside the emulator config menu,
    their is no need for you to make rom specific config files or to make any changes in the Retorarch menu

    I like using rom specific cfg files because I can make them in my PC and simply drag and drop them into my PI
    their is no need to connect a keyboard or for me to navigate through the retroarch cfg menus.


  • @hex seemed to work but its a little wonky and messed with my other config I put in the rom folder .. I think I figured it out though thanks again


  • Regular MAME can auto-rotate the screen; does RetroArch have a similar feature? If not, you could consider switching to regular MAME in stead.


  • @32assassin said in Possible to rotate screen per rom file?:

    video_rotation

    I managed to rotate the screen and get aspect ratio correct. Now I am only wondering, where should I put the rom specific file? Or where in the menu can I find the save rom specific configuration (for lr-fbneo)?

  • Global Moderator

    @langest said in Possible to rotate screen per rom file?:

    Now I am only wondering, where should I put the rom specific file?

    As the posts above said - and it's also mentioned in the Docs - , next to the ROM file.

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