[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89746

--- Comment #20 from Emil Velikov  ---
Darek, please open a separate bug for your issue.

In general using "export LIBGL_DEBUG=verbose" and/or "export LD_DEBUG=libs"
allows everyone to see a bit more about which libraries are picked and why
things are failing. It's worth adding some of that in the report.

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

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https://bugs.freedesktop.org/show_bug.cgi?id=89746

--- Comment #19 from Darek Deoniziak  ---
Hi, not really sure if my issue is related to this one.

The problem with genymotion occured to me while using DRI_PRIME=1 genymotion
after updating drivers using oibaf ppa
https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers on Ubuntu 16.04.

I have Dell Inspirion 7548 with Radeon Opal R7 M265. Genymotion on Intel 5500
Broadwell G2 still works.

glxinfo OpenGL renderer: Gallium 0.4 on AMD OLAND (DRM 2.43.0 /
4.4.0-36-generic, LLVM 3.9.0)

I know it is newer LLVM and probably problem was fixed in the past, not sure
what version of LLVM is used in stock 16.04.

While running genymotion with DRI_PRIME=1 I am getting these errors:
libGL error: unable to load driver: radeonsi_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: radeonsi
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast

I've searched around the web and added this to my .profile:
export LD_PRELOAD='/usr/$LIB/libstdc++.so.6'
export DISPLAY=:0

That helped with running steam but not genymotion. But actually I am not sure
if this is related to the emulator issue itself, I might have been getting
these error messages too before I've updated oibaf drivers. The genymotion main
menu panel to run emulators work, but emulators won't display.

The genymotion emulator log gives me: [Genymotion Player] [Warning]
Unrecognized OpenGL version

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

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https://bugs.freedesktop.org/show_bug.cgi?id=89746

--- Comment #18 from Kevin  ---
I think this goes along with my issue in this bug report
https://bugs.freedesktop.org/show_bug.cgi?id=89685

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

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https://bugs.freedesktop.org/show_bug.cgi?id=89746

Michel Dänzer  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |FIXED

--- Comment #17 from Michel Dänzer  ---
Module: Mesa
Branch: master
Commit: d64adc3a79e419062432cfa8d1cbc437676a3fbd
URL:   
http://cgit.freedesktop.org/mesa/mesa/commit/?id=d64adc3a79e419062432cfa8d1cbc437676a3fbd

Author: Michel Dänzer 
Date:   Thu Mar 26 11:32:59 2015 +0900

radeonsi: Cache LLVMTargetMachineRef in context instead of in screen

Fixes a crash in genymotion with several threads compiling shaders
concurrently.

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89746

--- Comment #16 from Ming-Wei Shih  ---
patch applied cleanly against 10.5.2, been running this for almost 2 days.

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

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--- Comment #15 from giuseppe  ---
patch at #7 seemed to have solved the issue with genymotion for me too

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--- Comment #14 from Ming-Wei Shih  ---
I don't know if here is the best place to do this, in short

- download the patch
- download mesa (either git or tarball), unpack, cd into that dir
- patch -p1 < /path/to/the/patch
- compile & install

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--- Comment #13 from giuseppe  ---
How do I apply the patch? Can anyone help me indicating the command pls?

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

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--- Comment #12 from Ming-Wei Shih  ---
My bad, the patch in #7 fixed the regression for me.

I was having issues earlier because an other user had genymotion running and
locked on the same machine, genymotion sometimes has issues to find the correct
session and times out when there are multiple users (uid) using it.

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--- Comment #11 from Ming-Wei Shih  ---
It not solved with #7, but things behave differently now.

It's still hit and miss to get it running but when it fails it doesn't crash
any more, just gives an error that it cannot connect to the vm.

What's strange though is that when it fails I don't get any debugging at all,
so that that means there is a problem with genymotion itself? But then why this
never happens with llvm 3.5?

As far as I can tell genymotion's player (the part using OpenGL) is
multi-threaded and I can't find a way to disabled it.

Attached a successful run in #10, don't know if that's helpful at all.

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--- Comment #10 from Ming-Wei Shih  ---
Created attachment 114646
  --> https://bugs.freedesktop.org/attachment.cgi?id=114646&action=edit
[DEBUG] successful launch

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

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--- Comment #9 from Michel Dänzer  ---
(In reply to giuseppe from comment #8)
> Radeonsi  bug attachment

Is that from running with the patch applied?

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

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--- Comment #8 from giuseppe  ---
Created attachment 114641
  --> https://bugs.freedesktop.org/attachment.cgi?id=114641&action=edit
Radeonsi  bug attachment

THis is the output when I ran:

R600_DEBUG=ps,vs,gs ./genymotion

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

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--- Comment #7 from Michel Dänzer  ---
Created attachment 114629
  --> https://bugs.freedesktop.org/attachment.cgi?id=114629&action=edit
radeonsi: Cache LLVMTargetMachineRef in context instead of in screen

Does this patch help?

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[Bug 89746] Mesa and LLVM 3.6+ break opengl for genymotion

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--- Comment #6 from Tom Stellard  ---
(In reply to Ming-Wei Shih from comment #5)
> Created attachment 114583 [details]
> debug output while crashed
> 
> debugging output attached.

Based on the output it looks like there may be multiple threads compiling
shaders.  Do you know if genymotion is multi-threaded?  If it is, is there some
way to force it to use only one thread?

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--- Comment #5 from Ming-Wei Shih  ---
Created attachment 114583
  --> https://bugs.freedesktop.org/attachment.cgi?id=114583&action=edit
debug output while crashed

debugging output attached.

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--- Comment #4 from Ilia Mirkin  ---
(In reply to giuseppe from comment #3)
> (I ran genymotion with : './genymotion R600_DEBUG=ps,vs,gs'   command )

I believe the suggestion was to run it was

R600_DEBUG=ps,vs,gs ./genymotion

That way R600_DEBUG is in genymotion's environment. You should expect to see a
ton of output.

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--- Comment #3 from giuseppe  ---
I found out that like Ming-Wei Shih reported, if you try several time, sooner
or later you'll be able to get the machine started. Unfortunately even then it
wasn't stable for me.
Here's the output with the variables indicated by stellard (I ran genymotion
with : './genymotion R600_DEBUG=ps,vs,gs'   command )

[p at pop genymotion]$ ./genymotion
Logging activities to file: /home/p/.Genymobile/genymotion.log  
Logging activities to file: /home/p/.Genymobile/genymotion.log  
Logging activities to file: /home/p/.Genymobile/Genymotion/deployed/Custom
Phone - 4.2.2 - API 17 - 768x1280/genymotion-player.log  
OpenGL connected to 192.168.56.101:25000
Port 22468 will be used for OpenGL data connections
Unknown TCPCLI command 1003
Logging activities to file: /home/p/.Genymobile/genymotion.log
Logging activities to file: /home/p/.Genymobile/Genymotion/deployed/Custom
Phone - 4.2.2 - API 17 - 768x1280/genymotion-player.log
OpenGL connected to 192.168.56.101:25000
Port 22468 will be used for OpenGL data connections
Unknown TCPCLI command 1003
Logging activities to file: /home/p/.Genymobile/genymotion.log
Logging activities to file: /home/p/.Genymobile/Genymotion/deployed/Custom
Phone - 4.2.2 - API 17 - 768x1280/genymotion-player.log
OpenGL connected to 192.168.56.101:25000
Port 22468 will be used for OpenGL data connections
Unknown TCPCLI command 1003
Unknown TCPCLI command 1003
radeon: Failed to allocate a buffer:
radeon:size  : 0 bytes
radeon:alignment : 4096 bytes
radeon:domains   : 4
radeon:flags : 4
radeon: Failed to allocate a buffer:
radeon:size  : 0 bytes
radeon:alignment : 4096 bytes
radeon:domains   : 4
radeon:flags : 4
LLVM failed to compile shader
EE si_state_shaders.c:443 si_shader_select - Failed to build shader variant
(type=0) -12

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--- Comment #2 from Tom Stellard  ---
Can you set the environment variable R600_DEBUG=ps,vs,gs when you run
genymotion and then post the output.

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--- Comment #1 from Ming-Wei Shih  ---
I have the exactly the same issue here.

radeonsi + llvm 3.6 gives the exact same error while radeon (and llvm 3.6
installed) or radeonsi + llvm 3.5 never had any issue.

One remark though, it is possible to launch genymotion with the radeonsi + llvm
3.6 combinbation if one tries many times, sometimes it takes 3~5 retries and
sometimes 30+. Once started it seems stable.

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Bug ID: 89746
   Summary: Mesa and LLVM 3.6+ break opengl for genymotion
   Product: Mesa
   Version: 10.5
  Hardware: Other
OS: All
Status: NEW
  Severity: normal
  Priority: medium
 Component: Drivers/Gallium/radeonsi
  Assignee: dri-devel at lists.freedesktop.org
  Reporter: spupazza at hotmail.com
QA Contact: dri-devel at lists.freedesktop.org

I found out LLVM 3.6 + Mesa 10.5 (and newer) might have some sort of regression
breaking opengl with radeonsi drivers at least.

I use genymotion (android emulator) which relies on virtualbox and make use of
opengl acceleration.
On 2 different machines with 2 different distros (ubuntu 14.10/15.04 and
manjaro 0.9 pre4) I had the same problem: as soon as LLVM 3.6 or 3.7git (the
latter with utopic when I added paulo dias ppa) gets installed
genymotion stop working (the screen of the vm disappear 1-2 seconds after the
machine gets started, and while the screen disappear the machine keeps running
in the background).

On the terminal I get this error:
Port 22468 will be used for OpenGL data connections
Unknown TCPCLI command 1003
LLVM ERROR: 'main' label emitted multiple times to assembly file

With LLVM 3.5 genymotion (with the same distros and machines) was working just
fine.
Another proof that the issue is with LLVM is that as to temporarily sort this
problem out, I installed the proprietary drivers (fgrlx) and the issue vanished
(since proprietary drivers do not make use of LLVM).

To reproduce the bug, you need a radeon vga (possibly one using the radeonsi
drivers so with GCN architecture) , install vitualbox and genymotion, Setup a
virtual device and having installed LLVM 3.6 or newer. Then start the device
you created.

I reported this bug to the llvm bug-tracker system and they told me to report
it to you.

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