PCSX2
[BUG]: Persona 4 - Menu SW Renderer Flickering
Describe the Bug
Depending on the renderer selected, the color rendering of the Persona 4 UI changes. They can be put into three groups:
- Vulkan and OpenGL
Vulkan
OpenGL
- DX11 and DX12
DX11
DX12
- Software (also has flickering)
https://github.com/PCSX2/pcsx2/assets/136824455/a7f3de0d-fce9-47e3-962d-d26ac1fbe61f
Reproduction Steps
- Start Persona 4
- Open Saves Menu
- Switch Renderers
Expected Behavior
- Color rendering should be consistent across all four.
- Software should have no flickering.
PCSX2 Revision
1.7.4637
Operating System
Windows 11
If Linux - Specify Distro
No response
CPU
Ryzen 5900HX
GPU
RTX 3080 Mobile
GS Settings
None
Emulation Settings
None
GS Window Screenshots
No response
Logs & Dumps
Shin Megami Tensei - Persona 4_SLUS-21782_20230625100714.zip
SW is a bug, dx11/dx12 being different is likely blending and a limitation of the api.
Yeah, can confirm it to be a blending issue. The game also need at least high blending (vulkan/openGL) to properly render the menu effects.
see:
Basic blending
High blending
GS dumps (jus in case): Shin Megami Tensei - Persona 4_SLUS-21782_20230625185729.zip
Shin Megami Tensei - Persona 4_SLUS-21782_20230625185737.zip
Well, that's quite weird. Software looks fine for me if I switch to it, but if I start with software, it alternates between colours.
Edit: Ugh, looks like a threading issue perhaps. It's fine with no extra threads...
Well, that's quite weird. Software looks fine for me if I switch to it, but if I start with software, it alternates between colours.
Edit: Ugh, looks like a threading issue perhaps. It's fine with no extra threads...
Yeah, I try to run game from start with software rendering and the colour flickering happens. Weird is, if i move the saves selection the flickering gone. See:
https://github.com/PCSX2/pcsx2/assets/96909828/53e73a01-9ef2-4a27-9868-be69a9ceb3a1
With 0 extra threading it's not flickering but instead the colour is as if the blending is basic. However if i move the saves selection it's back to normal too.
Been doing some work to try and identify where the regressions occurred.
- Last known good build was 4541.
- In 4542, the colors in Software Rendering have changed (parts become darker). Possibly #8906
Seems to be a bad bisect - looks like the issue is intermittent. I'll see if I can find a way to trigger it. I've removed the ref to the issue above until I've tracked it down.
Right, the flickering started at the same time as the color change above (Build 4542) - it seems somtimes it doesn't flicker, just says on the darkened colors. If that happens, the flickering can be triggered by fiddling with the number of software rendering threads until it starts.
Closed, no longer occurs in latest build. Have tried changing SW rendering threads, all good now.
That's strange. I don't think anything was changed recently which would've affected it.. unless it was #9232