Amiberry fuzzy / blurry

[nharrer]

First off - what an amazing combination. Retropie and Amiberry work really well.
One thing I am still struggling with a bit however, is that the screen looks blurry / fuzzy in Amiberry. Games emulated in Retroarch are crystal clear though.

The resolution in Retropie is set to 1920x1080 60Hz (the native resolution of my monitor).

tvservice --status
state 0xa [HDMI CUSTOM RGB lim 16:9], 1920x1080 @ 60.00Hz, progressive

I tried all kinds of combinations in the Display section of the Amiberry config. (Fullscreen, Windowed, different resolutions). Not matter what I choose, I don't see any changes at all. Only Changing the line mode to double improves it a bit. But still not sharp.

There is a setting "Scaling method". But it can't be changed (greyed out).

Here are blown up screenshots taken with raspi2png:

Amiberry:

Amiberry Line Mode Double

And as comparison a screenshot from WinUAE taken on Windows.

I have zoomed all screenshots by a factor of 3 to see the artifacts. Full screenshots are here.

Here is my setup:

Raspberry Pi 400
RetroPie 4.7.6
Emulationstation 2.9.6RP
Amiberry V3.3 (2020-09-17) (installed from source 2021-01-26, but also with binary)

I found this post here talking about scaling modes not supported in SDL1.
https://retropie.org.uk/forum/topic/12316/amiberry-ipac/45
But it's three years old. I don't know if it' still the same problem. I hope there is a way to fix this. Any advice?

[AnalogHero]

You can fix this by changeing linemode from single to double in the display settings. After thst you can save your config for that game to make it permanent.

From top of my head there is a in way to make this setting permanent for all games.

Edit amiberry.conf and add or change the line to gfx_linemode=double

[nharrer]

Thanks @analoghero .
I already that did (see second screenshot above). It makes it better. But still blurry.

[AnalogHero]

@nharrer Oh. I overlooked that you already enabled line mode double.

[Thorr69]

Hmmm. Comparing the images, the Pi screens have a gradient border on all the sprites and fonts. I am wondering if you have a shader or an anti-aliasing setting happening on your pi that isn't present on your windows emulation.

[nharrer]

@thorr69 I don't think so. Other then gfx_linemode=doubleI left everything on default as it was out of the box.

[suprdory]

@nharrer
Did you make any progress with this issue?

I'm facing exactly the same problem now.