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

Created on 25 Mar 2016 · 22Comments · Source: hrydgard/ppsspp

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.

screenshot_2016-03-25-02-44-13
screenshot_2016-03-25-02-42-08

Platform-specific (Android)

Source

RaduNastase

Most helpful comment

Curious.

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

hrydgard on 27 Jun 2019

👍2

All 22 comments

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

-[Unknown]

unknownbrackets on 25 Mar 2016

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).

RaduNastase on 25 Mar 2016

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

zminhquanz on 25 Mar 2016

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

RaduNastase on 25 Mar 2016

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.

RaduNastase on 26 Mar 2016

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

zminhquanz on 26 Mar 2016

you're welcome!

RaduNastase on 26 Mar 2016

I have the same issue Im using the fast one ppsspp 1.6.2
screenshot_2018-06-01-08-11-33

Gamemulatorer on 1 Jun 2018

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.

RaduNastase on 1 Jun 2018

👍1

@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 😢

Gamemulatorer on 1 Jun 2018

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]

unknownbrackets on 3 Sep 2018

Here's the dump
ULUS10062_0000.ppdmp.zip

Gamemulatorer on 2 Dec 2018

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]

unknownbrackets on 2 Dec 2018

*1X PSP Rendering Resolution
*Texture Filtering Auto
Graphics issue still present so I think @RaduNastase is right about old Mali-GPU driver issue :(
screenshot_2018-12-03-01-04-02

Gamemulatorer on 2 Dec 2018

Graphics Issue also present in Mali-T720 GPU

Device Info

screenshot_20181203-181932
screenshot_20181203-181948
screenshot_20181203-181954

Look at the floor there's a black line

Screenshot

screenshot_20181203-181619

Gamemulatorer on 3 Dec 2018

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

Gamemulatorer on 27 Jun 2019

Curious.

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

hrydgard on 27 Jun 2019

👍2

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

Gamemulatorer on 19 Aug 2019

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?

hrydgard on 19 Aug 2019

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.