Daphne Resolution Issue

Galaga

Hi! I'm trying to set up a Pi 3 with RetroPie in a JAMMA bartop with a 240p arcade monitor! I'm using a ArPiCade adapter that also uses GPIO for controls. However instead of the 8:3 resolution I need, it defaults to this weird 720x240 resolution, and all of my games look like a rectangle! For RetroArch emulators I can easily fix this, but non-RetroArch emulators wont change like Daphne! I tried editing daphne.sh by adding a resolution but it didn't work! Any suggestions? Thanks!

Pi Model or other hardware: Pi 3
Power Supply used: Monitor transformer through JAMMA harness
RetroPie Version Used: I think 4.2 maybe?
Built From: Raspbian
USB Devices connected: keyboard, sometimes a mouse
Controller used: N/A
Emulator: Daphne

Galaga

Picture: http://imgur.com/a/RDp55

Galaga

So I guess if it's not a RetroArch emulator im screwed. Ugh...

caver01

@galaga is command line squished like that? Or what about EmulationStation? What does the screen look like when booting or if you were to load a desktop?

In my experience, Daphne likes to be 640x480, or upscaled from that.

Galaga

@caver01 Everything else is fine but the actual games. In the menu where you can change a emulator resolution it only has this 720x240 resolution which is screwing it up (no other 240p resolutions). It didn't do this when it was set to 1080p on my TV... I'm going to mess around with Daphne itself and see if I can get anywhere.

Galaga

WOW! I FINALLY got this Daphne issues figured out. I needed to make a custom resolution 320x240 for the Pi, set the framebuffer to 320x240, then add x-320 y-240 after the -fullscreen tag in daphne.sh. Here's how it looks now!: http://imgur.com/a/mweWb

caver01

@galaga it did sound more like a base config issue. Glad you figured it out. How do you like the game on the CRT?

Also, looks like you have an under voltage issue with your Pi's power supply as indicated by the lightning bolt icon.

Galaga

@caver01 The game looks great on the CRT. I still need to adjust the monitor, and set up controls and sound first. And yes there is a under-voltage issue. The Pi is being powered by the monitor transformer so there's nothing I can really do until I install a proper PSU.

shing86

@Galaga can you tell me how you edited the daphne.sh file, please? I can't edit from file and from terminal I don't know what I need to write.

TenaciousJ

This is a very old thread, but I found it so others may too, so I'm posting a solution in case someone needs it.

to adjust to a precise resolution, you need to edit:

/opt/retropie/emulators/daphne/daphne.sh

On the line that ends in : -fullscreen $params

you want to change that to read : -fullscreen -x 1024 -y 768 $params

or whatever resolution you're trying to force the games to run at. -x 1920 -y 1080 for 1080p, for example.

That should force the rendering to the correct dimensions, but you may also need to add the flag: -ignore_aspect_ratio

Hope this helps someone down the road save some time and some hair.

mitu

@TenaciousJ Instead of modifying the daphne.sh file, which will be overwritten on an upgrade, the easiest way to add parameters to the emulator is to use the .commands file, present in the game's .daphne folder. This is where the $params in the command line are coming from.

Yobiwan

@mitu Hi ! I'm looking for a parameter to force 4/3 ratio. What would you recommend ?

mitu

@Yobiwan said in Daphne Resolution Issue:

What would you recommend ?

Opening a new topic and detailing what you tried so far and it's not working.