[Bug 108919] Parkitect (Unity Game) dispalys artifacts and black screens with Vega hardware

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108919

Bug ID: 108919
Summary: Parkitect (Unity Game) dispalys artifacts and black
screens with Vega hardware
Product: Mesa
Version: 18.2
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Gallium/radeonsi
Assignee: dri-***@lists.freedesktop.org
Reporter: ***@moruzza.com
QA Contact: dri-***@lists.freedesktop.org

Created attachment 142689
--> https://bugs.freedesktop.org/attachment.cgi?id=142689&action=edit
Screenshot of one of the possible outcomes of starting the game

Issue: Vega hardware not working with Parkitect. The game is based on Unity.
Lots of artifacts, particularly with ambient occlusion turned up in game's
settings
Steps to reproduce: Start a game in parkitect with Vega hardware. Turn the
graphics settings to max and you will experience issues.

Sometimes it's playable, but always with artifacts

Happy to provide logs and feedback.

Some notes:
https://www.reddit.com/r/ThemeParkitect/comments/a0oboe/black_screen_on_linux_with_rx_vega_56/

Tested this with Mesa 18.2.4 and 18.3 in Fedora 29 (also had issues in Fedora
28).

Happy to donate a copy of the game to a known dev.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108919

--- Comment #1 from Juyas Yove <***@moruzza.com> ---
Created attachment 142690
--> https://bugs.freedesktop.org/attachment.cgi?id=142690&action=edit
Another artifact example

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108919

--- Comment #2 from Andreas Backx <***@backx.org> ---
I am the creator of the reddit post mentioned in the opening comment of the
issue. The 3 images (1 on the reddit post, and the 2 attachments posted) show
exactly what I get when I start the game, depending on what settings are used.
I cannot get it to any playable state though.

I'm running Arch Linux 4.19.4, mesa 18.2.5-1 (along with the same lib32
version), and running on i3 (Xorg) with xf86-video-amdgpu 18.1.0-1.

Here are also some logs from when I started the game:
https://paste.ubuntu.com/p/fRt54ftVD4/

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108919

--- Comment #3 from Markus <***@graph-ix.net> ---
Similar issue with black flickering reported here on an RX480 with Mesa 18.2.2
and ambient occlusion turned on:
https://old.reddit.com/r/ThemeParkitect/comments/a1mt60/graphics_issue_black_flickering_all_over_the_place/

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108919

--- Comment #4 from Evan Goers <***@gmail.com> ---
I am using an RX580 and also have this issue. Forcing OpenGL 4.2(4.3 and above
causes the issue) with the mesa environment variable allows the game to run
without artifacts but some shaders do not work, such as ambient occlusion.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108919

--- Comment #6 from Alexander Walker <***@alexwalker.info> ---
Created attachment 142771
--> https://bugs.freedesktop.org/attachment.cgi?id=142771&action=edit
Apitrace

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108919

--- Comment #7 from Alexander Walker <***@alexwalker.info> ---
(In reply to Timothy Arceri from comment #5)

Can somebody try to get an apitrace of the issue [1]? Thanks.
[1] https://github.com/apitrace/apitrace/wiki/Steam

Never used that tool before but I uploaded a trace that shows it immediately
visible on the main menu.

Lots of these in the console if they're relevant:
apitrace: warning: _gl_param_size: unknown GLenum 0x8267
apitrace: warning: _gl_param_size: unknown GLenum 0x92F5

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108919

Timothy Arceri <***@yahoo.com.au> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@yahoo.com.au

--- Comment #5 from Timothy Arceri <***@yahoo.com.au> ---
Can somebody try to get an apitrace of the issue [1]? Thanks.

[1] https://github.com/apitrace/apitrace/wiki/Steam

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108919

--- Comment #8 from Timothy Arceri <***@yahoo.com.au> ---
(In reply to Alexander Walker from comment #7)

Post by b***@freedesktop.org
(In reply to Timothy Arceri from comment #5)

Can somebody try to get an apitrace of the issue [1]? Thanks.
[1] https://github.com/apitrace/apitrace/wiki/Steam

Never used that tool before but I uploaded a trace that shows it immediately
visible on the main menu.
apitrace: warning: _gl_param_size: unknown GLenum 0x8267
apitrace: warning: _gl_param_size: unknown GLenum 0x92F5

I'm not sure, I don't see these when replying the trace. Aside from some calls
to unsupported debug functions I don't see any obvious issues in the trace.

Do you think you could try grabbing a capture in renderdoc [1]? Once you unzip
it somewhere you can add the following to the launch options for the game in
steam:

LD_PRELOAD=/your path to renderdoc here/renderdoc_1.2/lib/librenderdoc.so
%command%

When you lanuch the game you should see some text overlayed at the top of the
screen saying you can create a capture by pressing F12. Once you have a capture
you can find it in a folder in the /tmp/ directory.

[1] https://renderdoc.org/