Armored Core Silent Line Portable: flickering, likely lens flare-related

[TheParagone]

Game or games this happens in

NPUH10025_1.00

What area of the game

It happens in the level called Escort Transport. It's more less the third level of the game.

What happens

The screen starts flickering in weird ways. The flickering is not constant and isn't the typical black flashes flickering. The UI of the game also starts bugging out when the flickering happens. I have noticed that the level has a lens flare effect and the issue seems to happen when said effect is visible on screen.

What should happen

The screen should not flicker like it does.

GE frame capture

NPUH10025.zip

Platform

Android

Mobile phone model or graphics card

Realme GT2

PPSSPP version affected

v1.15.4

Last working version

No response

Graphics backend (3D API)

Vulkan

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 changing graphics settings to determine if one causes the glitch (especially speed hacks or enhancements/replacements.)
• Include logs or screenshots of issue.

[TheParagone]

Here is a video showing the issues.

[hrydgard]

Yeah, might be some readback trick going wrong.. Here's our collection issue for lense flare effects: #15923

Frame captures are probably not gonna do much good here, but save states might.

[TheParagone]

Here's a savestate that leads directly to the glitch.
NPUH10025.zip

[hrydgard]

This might work now if you set "Lens flare occlusion" to Always on. Can somone test this? In that case I'll just enable it by default for this game.

[TheParagone]

I can try, but that setting isn't available on Android, is there any way I can test it?

[hrydgard]

should be available in the latest APK from https://www.ppsspp.org/devbuilds/

though I haven't checked that it works on Android yet admittedly :)

[TheParagone]

Awesome I just tried it. It definitely helped a lot since there's no more white flashes. Still, some times there are little black flashes (one or two, so definitely not as bothersome) and sometimes along with these ones the HUD goes white for a few milliseconds.

[hrydgard]

Okay, well that sounds like a good improvement at least! I guess we can't close this though, since that black flash problem sounds related (although it might also be something else..)

[TheParagone]

What's the difference between on and off? Should it be better to just let it on auto?

[hrydgard]

Auto will enable it for the games we know it works on, as specified in compat.ini. Once I've added Armored Core to the list, that's the setting you want.

Just to be sure, what's the game ID of your ISO? (you'll see it by pausing and pressing the info buttton ("i" in a circle), it'll look something like UCUS98606).

[TheParagone]

It's NPUH11025 1.0 from what I can tell.

[hrydgard]

Hm, I think it's more likely to be NPUH10025 (which I found here: https://gamefaqs.gamespot.com/psp/960305-armored-core-silent-line-portable/data). I'll add that to the list soon, until then just use Always On.

[TheParagone]

Yep sorry, I added a 1 for some reason, it's NPUH10025

[RetroGameTalk]

Lens flare occlusion doesn't exist as a ppsspp setting, where is it?

[hrydgard]

It does in the latest development builds, or wait for 1.19.

[FATCatAndroid12]

Related #11430