Trouble resizing video

[gazjcollins]

Hi all,

I wonder if you might be able to help me.

I am having trouble resizing the video output of RetroArch, particularly for the GameBoy emulator. I would like to have the display “shrunk” so that it sits in the centre of the screen – I am using a GameBoy overlay and would like the output to fit in the screen portion of this overlay.

I have tried adjusting nearly every video parameter in RetroArch.cfg (the GB specific one) but to no avail. No matter what I try the output pretty much fills the screen.

I would be very VERY grateful if anybody could point me in the right direction!

[Floob]

Which version of RetroPie are you using?
2.4.0 and up allows you to press “x” as the game loads to set the resolution.

[gazjcollins]

Hi Floob.

Thanks for your reply – managed to fix this by finding my way to the rGUI, making the settings I needed and then saving the config. Then used this config to replace the retroarch.cfg in the GB folder so that it works each time I load it up.

Thanks again :)

[Roo]

this is my /opt/retropie/configs/gb/retroarch.cfg

# All settings made here will override the global settings for the current emulator core

video_shader_enable = true
video_shader = /opt/retropie/emulators/retroarch/shader/bead.glsl

input_overlay_enable = true
input_overlay = /opt/retropie/emulators/retroarch/overlays/gb.cfg
input_overlay_opacity = 0.70 # 1.0
input_overlay_scale = 1.0

aspect_ratio_index = "22"
custom_viewport_width = "645"
custom_viewport_height = "648"
custom_viewport_x = "637"
custom_viewport_y = "275"

which gives me the picture attached

Just curious what settings you’re using? I don’t see too many people using RetroArch shaders and overlays. To be fair, I tried on on the Pi 1 but performance suffered too much. With the Pi 2 I’ve been trying them again.

[Floob]

Hi Roo,

Could you share you gb.cfg overlay file?
Looks really nice.

[Roo]

Sure, I am (pretty much) using the ones from here:

http://retroarchborders.blogspot.com/

I’ve edited a few of them to make it more like the consoles I remember growing up. For example SNES was not the US version.

Be warned, borders in RetroArch can be a bit of a pain. If you move to a different display with a different resolution, you’ll need to change the viewport settings. And also, RetroArch on the Pi doesn’t seem to have the menu option to resize in the emulator. I end up figuring out the viewport settings on my PC and then editing the cfg file to match

[gazjcollins]

[quote=87589]And also, RetroArch on the Pi doesn’t seem to have the menu option to resize in the emulator. I end up figuring out the viewport settings on my PC and then editing the cfg file to match
[/quote]

To get to the menu – you need to enable a hotkey in the cfg file. Once you gave done this, you can press this hotkey and F1 on the keyboard to open the menu.

[Roo]

I should have made that clearer :)

I can get into the menu, but on the PC RetroArch I have the option for “Custom Ratio” where I can move the top left corner and bottom right corner to fit the overlay. On the Pi, I don’t see this option, it seems to be missing.

Oh and gaz – see my post above. What settings are you using? I’d like to compare.

[Author]

Posts