[Bug 97122] list of 12 dEQP-GLES2 tests causing systematic GPU lockups

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=97122

--- Comment #9 from Mauro Rossi <issor.oruam@gmail.com> ---
Hi Nicolai,

thanks a lot for your commitment and help.

Now I also learned how to run deqp on linux

I confirm that with the llvm 3.8.1 and later I see no GPU lockups.

Being oibaf ppa not affected, the resolution happened between 3.8.0 and 3.8.1
and has to be related to SI lowering, that's a lot of useful info for my
problem.

Cheers!
Mauro


Test Sessions:
--------------

cmake . -DDEQP_TARGET=x11_egl
make
cd ./modules/gles2
./deqp-gles2 -n dEQP-GLES2.functional.shaders.loops.*


Test Session 1: padoka ppa (mesa 12.1 and llvm 4.0.0)
---------------------------------------------------

utente@utente-desktop:~$ glxinfo | grep Mesa
client glx vendor string: Mesa Project and SGI
OpenGL core profile version string: 4.2 (Core Profile) Mesa 12.1.0-devel -
padoka PPA
OpenGL version string: 3.0 Mesa 12.1.0-devel - padoka PPA
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 12.1.0-devel - padoka PPA

utente@utente-desktop:~$ glxinfo | grep LLVM
    Device: AMD TAHITI (DRM 2.43.0 / 4.4.0-31-generic, LLVM 4.0.0) (0x679a)
OpenGL renderer string: Gallium 0.4 on AMD TAHITI (DRM 2.43.0 /
4.4.0-31-generic, LLVM 4.0.0)


Result: dEQP-GLES2.functional.shaders.loops.* 100% ok and no GPU lockups

DONE!

Test run totals:
  Passed:        624/624 (100.0%)
  Failed:        0/624 (0.0%)
  Not supported: 0/624 (0.0%)
  Warnings:      0/624 (0.0%)


Test Session 2: oibaf ppa (mesa 12.1 and llvm 3.8.1)
--------------------------------------------------

utente@utente-desktop:~$ glxinfo | grep Mesa
client glx vendor string: Mesa Project and SGI
OpenGL core profile version string: 4.1 (Core Profile) Mesa 12.1.0-devel
OpenGL version string: 3.0 Mesa 12.1.0-devel
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 12.1.0-devel
utente@utente-desktop:~$ glxinfo | grep LLVM
    Device: AMD TAHITI (DRM 2.43.0 / 4.4.0-31-generic, LLVM 3.8.1) (0x679a)
OpenGL renderer string: Gallium 0.4 on AMD TAHITI (DRM 2.43.0 /
4.4.0-31-generic, LLVM 3.8.1)

Result: dEQP-GLES2.functional.shaders.loops.* are 100% ok and no GPU lockups

DONE!

Test run totals:
  Passed:        624/624 (100.0%)
  Failed:        0/624 (0.0%)
  Not supported: 0/624 (0.0%)
  Warnings:      0/624 (0.0%)


Test Session 3: default Ubuntu 16.04 (mesa 11.2 and llvm 3.8.0)
-------------------------------------------------------------

utente@utente-desktop:~$ glxinfo | grep Mesa
client glx vendor string: Mesa Project and SGI
OpenGL core profile version string: 4.1 (Core Profile) Mesa 11.2.0
OpenGL version string: 3.0 Mesa 11.2.0
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 11.2.0

utente@utente-desktop:~$ glxinfo | grep LLVM
    Device: AMD TAHITI (DRM 2.43.0, LLVM 3.8.0) (0x679a)
OpenGL renderer string: Gallium 0.4 on AMD TAHITI (DRM 2.43.0, LLVM 3.8.0)


Result: Full screen artifacts and GPU lockup, but clearly llvm version related

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