Mana Khemia 2 | Background Disappear During Conversation on Vulkan

[Spicy-Kimchi]

What happens?

As mentioned in the title.

Vulkan

OpenGL

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

Huawei Mate 9 MHA-L29 | Kirin 960 Mali-G71 MP8 | Android 8.0.0

Dump.zip

[ghost]

#12934 Has merge any improvement @C4rrotMilk ?

[unknownbrackets]

The game downloads the frame once, then stretches it to a 256x256 surface (both Mana Khemia and Mana Khemia 2 do this.)

The stretch is done with depth=32767, but this transforms to 0. Viewport scale/offset is -/+32500. Depth clamp is enabled.

Min Z is 0001, and max Z is fde8. Depth test is enabled and ALWAYS (same as STENCIL.) It does this to set stencil to 1 on each pixel during the stretch.

Because of the minz, it clips this and doesn't draw it.

Here's a dump of the actual draw - it's hacked together because it's the one frame, so ignore the repeating.
On a PSP, it does indeed draw:

We draw nothing, and in software rendering too. Maybe it's some precision issue in the transform?

Mana Khemia 1 draws a bit differently, when doing the same thing. It sets minz to 0 and transforms a bit differently.

-[Unknown]

[Spicy-Kimchi]

Still the same in latest build. It's not really a big deal since I can play with OpenGL, just take your time :D

Edit: Confirmed fixed, I closing this.

[ghost]

@C4rrotMilk issue is already fixed in what build of ppsspp?

[Spicy-Kimchi]

v1.10.3-46-g6009bf7b7 #12952

[unknownbrackets]

Does it work on all backends? I thought there was still some depth issue.

-[Unknown]

[Spicy-Kimchi]

Didn't notice any issues on DX9 & DX11 as well. I will report if there got issues on other games. 🤔