JS Deck

Duckstation renders this correct at 1x resolution scale. That's one HW renderer that gets it right xd

I'm guessing the problem is that the hardware renderer scanout framebuffer all at once instead of following the scanlines. So this is a vsync emulation bug. I'll try to resolve...

Can you manually install core? ~~[Give this a try.](https://github.com/xzn/beetle-psx-libretro/releases/download/wip/mednafen_psx_hw_libretro.zip)~~ The ground texture is still weird though. I'm not good at writing shaders so no quick fix from me for now...

As a serious suggestion just use software mode for now. After changing the setting, close and reopen the game and it should works. OTOH where did you install the core?...

The official core has not been updated, updating through the in-game menu will not work. The one I uploaded is a work in progress but the flickering should have been...

Interesting, do you have save state to the level you are playing? I'm not getting any more flickering on my end so I don't know what's going on.. :o

I suggest restoring the original official core. I can't really help you since I can't reproduce the problem on my end. Sorry.. :(

~~[mednafen_psx_hw_libretro.zip](https://github.com/libretro/beetle-psx-libretro/files/5152451/mednafen_psx_hw_libretro.zip)~~ `[outdated]` I've managed to get rid of the bad ground texture for Vulkan at 1x resolution scale. It now looks as good as software mode but without flickering. ...

@DonelBueno it's really as you said just turn off perspective texture for those games. I tried implement iCB's second suggestion (reject perspective correction for polygons whose depth ranges are too...

Possibly related #490