Sengoku Basara - Graphical glitch (Android)

[Saramagrean]

What happens?

Graphics showing glitch, since v1.6.3-483-g1f881d790 (after Implement vertex range culling) occurs only in the OpenGL, on Vulkan is work well and happen on Android only.

What should happen?

Last work v1.6.3-468-gad6938de5 or v1.8.0 recent build with Vulkan.

What hardware, operating system, and PPSSPP version? On desktop, GPU matters for graphical issues.

Huawei P9+ (Kirin 955/Mali T-880/Android 8.0)

[unknownbrackets]

If I understand correctly, it's just the ground that is wrong, right? Interesting that it's OpenGL only - might mean that it's related to depth clamping in some way.

Could you try exporting a GE frame dump? These help a lot.

See here for instructions - it's not hard and works on Android too:
https://github.com/hrydgard/ppsspp/wiki/How-to-create-a-frame-dump

You can zip that and then drag and drop it into a reply here.

-[Unknown]

[Saramagrean]

Yes, graphical glitch on the ground and here GE dump.
Dump (OGL).ppdmp.zip

[unknownbrackets]

For me, that's drawing correctly on all backends, so it may mean that's specific to Mali-T880. Just to confirm: you're using v1.8.0 or higher right? There were some fixes to range culling depth handling recently.

For reference, it should look like this:

-[Unknown]

[Saramagrean]

Yes, I use PPSSPP v1.8.0-31-g8adb0dfd6.

[Saramagrean]

Samsung J7 (Mali T-720) 😂

[Saramagrean]

Lord of Apocalypse get same problem too.
NPJH50503.ppdmp.zip

GE Dump 2
NPJH50503_2.ppdmp.zip

[unknownbrackets]

Strange. The draw happening there doesn't seem even close to being culled.

-[Unknown]

[Saramagrean]

Enable DepthRangeHack for this game (or any game that encounter the same problem like Lord of Apocalypse, MGS:PW) It fixed graphical glitch on my device.

[Saramagrean]

Okay, fixed by #12227

Thank you!! ヽ(´▽｀)/

v1.8.0-429

v1.8.0-487

[unknownbrackets]

Ah, great. Thanks for retesting and reporting.

-[Unknown]