Assassin's Creed: Bloodlines - vertical and horizontal lines all over the screen

[10522]

Game or games this happens in

ULES-01367 - Assassin's Creed: Bloodlines

What area of the game

Lines appear in the main menu and do not disappear even in the gameplay.

What happens

What should happen

These lines should not be. I tried changing all the settings, but it didn't help. The Windows version (v1.14.4) does not have this problem (OpenGL + default settings).

GE frame capture

ULES01367.zip

Platform

Android

Mobile phone model or graphics card

Xiaomi Mi Box S

PPSSPP version affected

v1.14.4

Last working version

No response

Graphics backend (3D API)

OpenGL / GLES

Checklist

• Test in the latest git build in case it's already fixed.
• Search for other reports of the same issue.
• Try resetting settings or older versions and include if the issue is related.
• Try changing graphics settings to determine if one causes the glitch (especially speed hacks or enhancements/replacements.)
• Include logs or screenshots of issue.

[10522]

@hrydgard, @unknownbrackets, works well with v1.13.0 + Disable Slower Effects. Is it possible to fix this in new versions of PPSSPP?

[hrydgard]

I'll try to look into this soon.

[ghost]

This issue is exclusive only oon MALI GPU ES 2.0 devices.
Dup #11598

[hrydgard]

I just quickly tested on my Galaxy S3 (with Mali-400) and it does reproduce. It also quickly hangs the device, heh.

[hrydgard]

It appears to be some texture coordinate precision issue, though precisely how that results in the strange geometric patterns is beyond me. I've also tried bumping various shader variables to highp, but with no success.

This is not likely to be a recent regression, so I'm gonna post-pone this.

[unknownbrackets]

This does use 2 * dst.a blending. Maybe there's some weird pattern of alpha in the buffer during bloom.

-[Unknown]

[hrydgard]

Hm, possible. I guess one theory could be that we might be skipping something else on ES 2.0 that would remove said pattern. Not seeing this at all on more modern phones or on PC...