Using Mame and other emulators in full LCD 3.5" screen

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This topic contains 5 replies, has 2 voices, and was last updated by  wilsonb 2 years, 4 months ago.

Viewing 6 posts - 1 through 6 (of 6 total)
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  • #105182

    wilsonb
    Participant

    On this topic including RetroPie. I am using 3.5″ PiTFT (Pi 2 & previous working edition on RetroPie)

    I would like to fill the whole 3.5″ LCD, currently it has black bars on right/left side. I know the only way might stretch the pixels.

    Trying to figure out what config file controls games(mame) on LCD. The RetroPie front end menu system fits nicely full screen.

    Attachments:
    #105184

    wilsonb
    Participant
    Attachments:
    #105187

    petrockblog
    Keymaster

    Change aspect_ratio_index in /opt/retropie/configs/all/retroarch.cfg to force to the aspect of your screen.

    for my dev monitor (5:4) that would be aspect_ratio_index = “10”

    you can count from 0 in the retroarch gui settings to work out the value without having to save the entire retroarch.cfg or can configure from there / save new config and extract the value needed.

    #105189

    petrockblog
    Keymaster

    here are the values

    ASPECT_RATIO_4_3 = 0,
    ASPECT_RATIO_16_9,
    ASPECT_RATIO_16_10,
    ASPECT_RATIO_16_15,
    ASPECT_RATIO_1_1,
    ASPECT_RATIO_2_1,
    ASPECT_RATIO_3_2,
    ASPECT_RATIO_3_4,
    ASPECT_RATIO_4_1,
    ASPECT_RATIO_4_4,
    ASPECT_RATIO_5_4,
    ASPECT_RATIO_6_5,
    ASPECT_RATIO_7_9,
    ASPECT_RATIO_8_3,
    ASPECT_RATIO_8_7,
    ASPECT_RATIO_19_12,
    ASPECT_RATIO_19_14,
    ASPECT_RATIO_30_17,
    ASPECT_RATIO_32_9,
    ASPECT_RATIO_CONFIG,
    ASPECT_RATIO_SQUARE,
    ASPECT_RATIO_CORE,
    ASPECT_RATIO_CUSTOM,

    16:9 is aspect_ratio_index = 1

    #105209

    petrockblog
    Keymaster

    No need to post the full config here – makes threads hard to follow – please use pastebin or similar.

    if you are talking about the default mame4all, or advmame – neither are retroarch emulators so they dont use this config. I think mame4all-pi might need a patch to “fit to screen”.

    #105272

    wilsonb
    Participant

    Thanks for the help.

    Where do you see mame4all-pi ?
    Im not seeing that.

    Were you referring to the whole package in general Mame4all-pi and not a config file?

    Thanks

Viewing 6 posts - 1 through 6 (of 6 total)

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