Street Fighter Alpha 3 Max graphical glitches (android) (1x resolution needed)

[RaduNastase]

I am on Android 4.1.2 (Samsung Galaxy S2 with Dorimanx 8.43), using ppsspp 1.2.2. The lines are both vertical (like in the pics) and horizontal, sometimes forming full squares. I changed all settings back and forth but the lines do not go away. Strangely they do however start to diminish after a few stages of gameplay.

[unknownbrackets]

Switch to 1x render resolution and make sure vertex cache is disabled.

-[Unknown]

[RaduNastase]

no change. The errors are still there. There is something strange seeing as all other games i have are glitch free (Fate, DBZ, Strikers plus, BlazBlue, GGXX).

[zminhquanz]

@RaduNastase which app monitor your CPU and ram is it ?

[RaduNastase]

it's Cool Tool for memory and Cpu usage and CpuTemp for cpu temp :P

[RaduNastase]

Little update: I tried the game in Retroarch ppsspp core and while it runs much slower than in PPSSPP 1.2.2, it has the exact same errors regardless of settings.

[zminhquanz]

thank you for your app , it better than other app , ex : System Monitor , TinyCore

[RaduNastase]

you're welcome!

[ghost]

I have the same issue Im using the fast one ppsspp 1.6.2

[RaduNastase]

Ok, so i used to have this issue with my old Mali GPU powered smartphone (Samsung S2), but after i got an Adreno GPU phone (Note 3), the errors were gone. I also would recommend putting all filters to "nearest" and also playing at native psp resolution without any upscale of any kind.

[ghost]

@RaduNastase tnx for your suggestion but the graphics issue still occur I think your right about the issue in Mali GPU because my phone GPU is Mali-450 😢

[unknownbrackets]

Could you try exporting a GE debugger dump on PC?

To do this, open the game and select Debug -> GE debugger..., then when it's displaying the scene, press Record in the top right. After a second or so, it'll finish and save a trace of the drawing activity.

After that, check the memstick/PSP/SYSTEM/DUMP folder and it'll have created a file named something like "ULES12345_0000.ppdmp". You can zip that and then drag and drop it into a reply here.

-[Unknown]

[ghost]

Here's the dump ULUS10062_0000.ppdmp.zip

[unknownbrackets]

Doesn't reproduce on NVIDIA or Adreno.

However, setting render resolution above 1x PSP and setting Texture filtering to Linear causes similar artifacts. Make sure you've got Texture filtering set to Auto and verify if it happens with 1x PSP render resolution.

If that fixes it, you may have to use texture scaling to play this at a higher resolution.

-[Unknown]

[ghost]

1X PSP Rendering Resolution Texture Filtering Auto Graphics issue still present so I think @RaduNastase is right about old Mali-GPU driver issue :(

[ghost]

Graphics Issue also present in Mali-T720 GPU

Device Info

Look at the floor there's a black line

Screenshot

[ghost]

The graphical glitches is only happen in Mali-GPU OpenGL I don't have a phone with Mali-GPU with Vulkan though..

[hrydgard]

Curious.

Anyway I think it might be worth enforcing 1x for this game. Putting that on the list.

[ghost]

Redream Devs found a ways to fixed the same issue as this in rendering 2D games in HD so hoping ppsspp will have too I'm not comparing Redream to PPSSPP because they are differents emulator but hoping one day we can play this game in higher rendering resolution without graphics glitches.

https://mobile.twitter.com/inolen/status/1039226899250262017

[hrydgard]

Is there much reason to render this game in HD though? Pretty much all its graphics are at 1:1 pixel resolution on the PSP anyway, right... not many polygons around?

[LunaMoo]

Increasing rendering res keeps the image sharper while using auto texture filtering or reduces the artifacts when forcing nearest texture filtering since it doesn't have 1:1 PSP resolution, but uses PSOne res stretched to fit. The tiled textures this game uses makes it impossible to use texture scaling without introducing very awful glitchess, so I made a specially tweaked scaling shader which uses xBR/xBRZ with non PSP aspect ratio and it pretty much requires higher render res to give nice effects.

Then again it's probably way too heavy to be useful for mobiles, so forcing x1 render res there could be ok. Those issues does not happen on PC's(althrough similar ones are introduced by texture scaling) so such workarounds should not affect pc's if really required.

[ghost]

this issue still happen in the latest ppsspp beta build in my android phone with Mali GPU's :(

[ghost]

Just an experimentation :) Character graphics glitch.

HARDWARE (1x rendering resolution)

SOFTWARE

I added Street Fighter Alpha Max 3 to ForceSoftwareRenderer compat and the graphics glitch is gone, but as expected the game performance decreases.

[ghost]

I can't reproduce this issue on latest git build on my Redmi Note 9

OpenGL

Vulkan

This game is running smooth on OGL while in Vulkan it's lag 🤔

[ghost]

This game has no graphics issue now on my phone using latest git build apk of PPSSPP also Vulkan is smooth now on this game.

[ghost]

Rendering Resolution - 3X PSP Display Layout - Stretching Graphics Backend - Vulkan/OpenGL

[unknownbrackets]

Maybe the vfpu sin/cos things made some calculations more even and line up better?

If no one can reproduce this anymore, I'll close it. It does seem a bit unexpected that it would be fixed, though.

-[Unknown]

[ghost]

Although the issue still can reproduce on my old mali-450 gpu phone with opengl 2.0 :(

[hrydgard]

Curious. Gonna leave it open.

Is that with non-buffered rendering?

[ghost]

Curious. Gonna leave it open.

Is that with non-buffered rendering?

ppsspp default settings so it's buffered rendering

[RaduNastase]

Out of curiosity, did you try the Retroarch ppsspp core? It behaves the same in this game?

[ghost]

No I haven't try it on retroarch yet... On Jun 17, 2021 9:55 PM, "RaduNastase" @.***> wrote:

Out of curiosity, did you try the Retroarch ppsspp core? It behaves the same in this game?

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[ghost]

This issue can also reproduce on the king of fighters '96. 2X Resolution 4X Resolution

But I can't reproduce this on street fighter alpha max 3 2X Resolution 4X Resolution

Phone: Redmi Note 9

[ghost]

I think this issue can closed now, because I can still reproduce this at 1X resolution on my mali-450 gpu. look at the character clothes