SDL: HiDPI support on Wayland (blurry fonts)

[hch12907]

Game or games this happens in

None

What area of the game / PPSSPP

When I am using PPSSPP on Wayland with HiDPI scaling, there is a general blurriness on everything in the main menu,.

I have a hacky build (with hardcoded DPI and stuff...) that showcases how it should look like compared to the latest stable build:

What should happen

The text should look sharp.

Logs

No response

Platform

Linux / BSD

Mobile phone model or graphics card

It's irrelevant, but AMD Renoir iGPU

PPSSPP version affected

42d4b5d

Last working version

No response

Graphics backend (3D API)

Other

Checklist

• Test in the latest git build in case it's already fixed.
• Search for other reports of the same issue.
• Try resetting settings or older versions and include if the issue is related.
• Try without any cheats and without loading any save states.
• Include logs or screenshots of issue.

[hch12907]

I have a commit for this in ba3203d.

For some reason the compiler chokes on SDL_Vulkan_GetDrawableSize() in SDLMain.cpp though...

[hrydgard]

Ah, hm. Do feel free to make a pull request for it anyway, and let's use CI to figure out what platforms have trouble..

[hch12907]

I closed this because HiDPI support on Wayland was added in #17651. Ingame graphics look crisp now as expected (before the PR, everything looked blurry on SDL Wayland, even in-game), but the text in main menu still looked somewhat soft:

Interestingly, the borders of each UI element (buttons etc) look pretty sharp. The only thing that remains to be fixed on HiDPI is text rendering.

[hrydgard]

The text rendering sharpness issue should be fixed now with #17780 .

Some of our bitmap symbols and icons could also use higher-definition versions I suppose, but that's kind of a big project.