Graphical glitches in Dragon Ball Z: Tenkaichi Tag Team

[Panderner]

There's a graphical issue where the glitching lines are drawn inside the clouds but it does not occur on real hardware.

PPSSPP:

PPSSPP's Software Renderer:

Real Hardware:

Here's a GE Dump:
recording.ppdmp.zip

[hrydgard]

I was pretty sure this game worked fine. What hardware? GL or Vulkan?

[Panderner]

I'm using OpenGL but my phone doesn't support vulkan

[hrydgard]

Definitely a shader math precision issue, I can repro this now on Vulkan after my recent attempts at being more consistent with precision - 34efa12.

Will fix soon

[hrydgard]

Hm fixing it on Vulkan was trivial but I'm having some bizarre issue on OpenGL on a Huawei device (Mali GPU) where whatever change I make to the shader, it breaks the outlines entirely (!). It's like it's cached a working shader with exactly the text I'm using now but any change and it recompiles and breaks. Very odd. (EDIT: actually now it doesn't work anymore ... wtf)

[hrydgard]

Hm, shader-depal was broken, the uniform not updated properly. Fixing that!

[Panderner]

@hrydgard I'm using PowerVR GPU.

[ghost]

Cannot reproduce this on my RN9 Mali-G52 GPU using ppsspp v1.10 🤔