[Bug 93936] Snail shadertoy displays black quad

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=93936

GitLab Migration User  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |MOVED

--- Comment #6 from GitLab Migration User  ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/573.

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[Bug 93936] Snail shadertoy displays black quad

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=93936

--- Comment #5 from Gert Wollny  ---
Some new register allocation in TGSI landed in v17.3 and was later further
improved. Could you recheck with version 17.3+ or, if that doesn't work, with
the current git? 

On AMD 5450 and 6870 it works (the register limit is the same).

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[Bug 93936] Snail shadertoy displays black quad

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

https://bugs.freedesktop.org/show_bug.cgi?id=93936

--- Comment #4 from cyberkm at gmail.com ---
Same problem here, i see in logs ->
also i saw that the hardcoded value for registers is 124, any reason for such
small number?

r600_shader.c:3662 r600_shader_from_tgsi - GPR limit exceeded - shader requires
230 registers

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[Bug 93936] Snail shadertoy displays black quad

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

https://bugs.freedesktop.org/show_bug.cgi?id=93936

--- Comment #3 from pavol at klacansky.com ---
This prints forever:

EE
/var/tmp/portage/media-libs/mesa-11.1.1/work/mesa-11.1.1/src/gallium/drivers/r600/r600_state_common.c:815
r600_shader_select - Failed to build shader variant (type=1) -1
EE
/var/tmp/portage/media-libs/mesa-11.1.1/work/mesa-11.1.1/src/gallium/drivers/r600/r600_shader.c:161
r600_pipe_shader_create - translation from TGSI failed !

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[Bug 93936] Snail shadertoy displays black quad

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

https://bugs.freedesktop.org/show_bug.cgi?id=93936

--- Comment #2 from Michel D�nzer  ---
Seems to work fine with radeonsi FWIW. Is there anything interesting in
Firefox's stderr output? Maybe the r600 driver is failing to compile a shader.

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[Bug 93936] Snail shadertoy displays black quad

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https://bugs.freedesktop.org/show_bug.cgi?id=93936

--- Comment #1 from pavol at klacansky.com ---
Correct link

https://www.shadertoy.com/view/ld3Gz2

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[Bug 93936] Snail shadertoy displays black quad

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

https://bugs.freedesktop.org/show_bug.cgi?id=93936

Bug ID: 93936
   Summary: Snail shadertoy displays black quad
   Product: Mesa
   Version: 11.0
  Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
  Severity: normal
  Priority: medium
 Component: Drivers/Gallium/r600
  Assignee: dri-devel at lists.freedesktop.org
  Reporter: pavol at klacansky.com
QA Contact: dri-devel at lists.freedesktop.org

The following shader displays black quad on AMD 3650 Mobility. I used Firefox
44.

https://www.shadertoy.com/view/ld3Gz2h

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