Rotating head issue

[joelolopez]

White knights origins, this character comes into the the scene while her head is rotating lol
Tested on opengl and vulkan backend, and as u notice the screenshot below shes extending her hands sideward like a plane lol

OS android 7.0 , Octa-core, 2360 MHz, ARM Cortex-A53, 64-bit, 16 nm , Mali-T830 MP2 , 4 GB RAM

[Leopard20]

Indeed...Who is this, or should I say, what is this?! 😂😂😂

[LunaMoo]

Works fine for me, so this might be arm jit issue, could also be the results of using some hack, maybe messing with psp cpu core clock.

@joelolopez Make sure it happens with default settings (not using savestates as they will already contain the problem doesn't matter what you change) and if it does, try going to Settings->Tools->Developer tools and change CPU core to interpreter or IR interpreter, the game will most likely become unplayably slow, but this is just to confirm if it's a arm JIT bug or not. Again you should not use savestates when testing, once bugged, state will forever be bugged:P.

[joelolopez]

Tested all interpreter and default settings and i loaf it form load menu not from savestate but it still have this problem

[Leopard20]

What is your PPSSPP version?

[joelolopez]

Tried 1000 and 2000/3000 im using 1.5.4

[Leopard20]

I mean the version of the app!

Did you close this intentionally?!

[joelolopez]

Nope i accdentaly codsed it im sorry

[hrydgard]

Funny issue :) If it doesn't even work in the interpreter though, it's not super likely to be a CPU issue (although of course it can be one, we know from Tekken 6 that we still have some problems. With luck it could be the same one..).

[Leopard20]

@joelolopez
I think LunaMoo is using the latest git builds, so you might wanna try them too. The issue might already have been solved.

[joelolopez]

I dont have any compiler to build the latest builds.. Is tgefe someone can share me a compiled version of latest build so that i can test it now

[Leopard20]

You don't need to! It's automatically built every time someone makes a commit. Download from here:
https://www.ppsspp.org/downloads.html
Go to the bottom of the page, and get the latest version (1.5.4-933)
Note: You should delete the current version to install a developer version (because of conflicting signatures) but don't worry! Your settings will not be deleted! (just restart the app after first run if they don't work)
Also enable installing from unknown sources from your device settings (if you already haven't). It's generally located here (may vary a bit from device to device)
Settings>Security (or Privacy)>Unknown Sources.

[joelolopez]

I forgot hahaha

[joelolopez]

Im using 1.5.4-933 but nothing has changed the issue its still there

[unknownbrackets]

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]

[joelolopez]

http://www.mediafire.com/file/rpsyhbjh9cf87gj/recording.ppdmp/file

[ghost]

Is the head still rotating hahaha 😂😂😂

[ghost]

http://www.mediafire.com/file/rpsyhbjh9cf87gj/recording.ppdmp/file

I cannot load your dump, can you upload your save states? @joelolopez

Also please change the title of the issue.

[ghost]

I also encounter an issue on this game the characters is missing only the sword is visible.

white-knight.ppdmp.zip
Mali-450 GPU

[unknownbrackets]

http://www.mediafire.com/file/rpsyhbjh9cf87gj/recording.ppdmp/file

I think I never commented with notes on this dump, but just for future reference - the model is rotated on PC with this dump.

That makes me think the drawing commands are actually wrong. It does use weights for this model, so probably it's the weights somehow that are wrong.

I also encounter an issue on this game the characters is missing only the sword is visible.

For this one, the sword is drawn at 3684/3806, and the knight at 3030/3806. The most obvious difference is, again, weights. The knight is drawn using weights (as is the character in front of it, who is also not visible in that screenshot.) The sword doesn't use any weights.

They're u8 weights here, which would make me suspect the vertex decoder... except that isn't used in the IR Interpreter or Interpreter modes.

Does hardware transform on/off affect this missing knight issue? Software skinning?

-[Unknown]

[ghost]

Hardware Transform OFF

Software Skinning ON

Hardware Transform ON

Software Skinning OFF

Hardware Transform OFF

Software Skinning OFF

[unknownbrackets]

Wait, those both say hardware transform off?

But it's definitely interesting that it seems affected differently by both settings.

-[Unknown]

[hrydgard]

Tagging with both GE and CPU then, rotation must be a CPU issue and the missing pieces GE?

[ghost]

Wait, those both say hardware transform off?

The first picture the sword is missing hw transform is off and sw skinning on.
second picture has the wacky gfx issue hw transform is on and sw transfer is off, the third picture got the correct graphics.
That's only can reproduce on my ancient phone mali-450 GPU.

[hrydgard]

Ah, okay. So that's probably the vertex shader failing to compile if it's too complex for that poor little driver, which it can be if it has to do skinning.

[ghost]

This is very funny issue 🤣😂😅

Screenrecorder-2021-09-20-16-37-35-992.mp4

[hrydgard]

It's so wacky that it might even be that it fails to load an animation file, or something?

[unknownbrackets]

Has this changed in the latest git builds? I know we've fixed a few potentially related bugs, although I'm not sure it'll be fixed. Please make sure software skinning is enabled when testing.

Edit: note: it has not changed, apparently, as of 2023-02-26 or so.

-[Unknown]