GachiTora! Abarenbou Kyoushi in High School graphical issue

[Panderner]

Reported on #14136 (comment)

This graphical issue for GachiTora is only occurs for Vulkan.

OpenGL:

Vulkan:

GE dump:
NPJH50409_0001.ppdmp.zip

[unknownbrackets]

The prims between 3311-3322/4961 draw incorrectly from depth clamp, so this is another depth clamp related issue. It's not a depth skew issue, because minz/maxz are the full range.

The vert depth values are pretty crazy, so this is likely something we've got wrong with the clipping depth clamp performs...

-[Unknown]

[unknownbrackets]

I think this has been fixed by the cull/clip changes - it looks fine on Vulkan for me now. Notably, that means it's still an issue on Mali.

Mentioning this for #12058 so it doesn't get lost.

-[Unknown]

[ghost]

Mali-G52 MC2 Vulkan RN9

DisableAccurateDepth=TRUE

DisableAccurateDepth=FALSE

Similar to #15016 (comment)

[ghost]

How about this now?

[ghost]

This is ok on my oppo a3s adreno 506 gpu vulkan.

Might be fixed via #16043

[hrydgard]

OK. Let's assume it's working on mali too now then :) If not, let's re-open.

[unknownbrackets]

I think this is the neg z thing and not fixed on Mali (no clip/culldistance support), but we have multiple issues for that so I think it's okay to close this one.

-[Unknown]

[IrfanH495]

Samsung m20
Exynos 7904
Mali-G71

[ghost]

Samsung m20 Exynos 7904 Mali-G71

Add the game id to disableaccuratedepth

[IrfanH495]

@Gamemulatorer ok thanks

[unknownbrackets]

That's a hack and might result in other issues, because it's not how the PSP renders depth. Does it work to use the new geometry shader support in recent git builds? Although I think this one requires clipping.

-[Unknown]

[IrfanH495]

version I'm using now
v1.13.2-1346-gbc1975bc9

I will try the latest version.

[IrfanH495]

v1.13.2-1366-g360eab321

[ghost]

Mali GPU is very problematic gpu in terms of emulator 🤔

[ghost]

Might be good to reopen this @IrfanH495 can still reproduce this on his MALI GPU phone with geo shader enable.

[hrydgard]

Although if it requires clipping, it not working yet is expected. It'll have to wait until someone gets around to implementing software clipping in the geo shader or fragment shader.

[IrfanH495]

ppsspp-v1.13.2-1393-g7dd93f906-android issue has been fixed

thanks very much.

[unknownbrackets]

For the remaining devices, it might be possible to adjust the Z min/max values to clip using standard Z clip, but you'd have to be careful to adjust the output Z to this range and account for it in any depth rounding. I think most modern devices do support shader clip distance.

Alternatively, could discard in the fragment shader, as in:
master...unknownbrackets:simulate-clip-range

-[Unknown]

[IrfanH495]

sorry, may I share how to use compat.ini on my channel because some people have asked about it.

[IrfanH495]

sorry, this is the same issue
geometry shader culling ON

geometry shader culling OFF