[Bug 50338] New: r600g: EE r600_shader.c:140 r600_pipe_shader_create - translation from TGSI failed !

[Bug 50338] New: r600g: EE r600_shader.c:140 r600_pipe_shader_create - translation from TGSI failed !

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=50338

             Bug #: 50338
           Summary: r600g: EE r600_shader.c:140 r600_pipe_shader_create -
                    translation from TGSI failed !
    Classification: Unclassified
           Product: Mesa
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: edwin+mesa@etorok.net


Created attachment 62087
  --> https://bugs.freedesktop.org/attachment.cgi?id=62087
R600_DUMP_SHADERS=1 output

Trying to reproduce bug #50325 on Mesa git caused this error:
EE r600_shader.c:140 r600_pipe_shader_create - translation from TGSI failed !

Bug can be reproduced by one of these:
build/glretrace lt-glyphy-demo.trace
demo/glyphy-demo

I get the translation failed error both with R600_LLVM=0, and R600_LLVM=1.
I've attached the R600_DUMP_SHADERS=1 output.


glretrace is from https://github.com/apitrace/apitrace/tree/1.0
and glyphy is from https://code.google.com/p/glyphy/source/checkout

lt-glypy-demo.trace is here:
https://bugs.freedesktop.org/attachment.cgi?id=62078

git version of Mesa:
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD RV730
OpenGL version string: 2.1 Mesa 8.1-devel (git-35f302d)
OpenGL shading language version string: 1.30
OpenGL extensions:

Built with (on Debian unstable):
./configure --with-dri-drivers= --with-gallium-drivers=r600,swrast
--enable-glx-tls --enable-gallium-llvm LLVM_CONFIG=/usr/bin/llvm-config-3.1

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[Bug 50338] r600g: EE r600_shader.c:140 r600_pipe_shader_create - translation from TGSI failed !

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=50338

--- Comment #1 from Török Edwin <edwin+mesa@etorok.net> 2012-05-25 00:22:02 PDT ---
Created attachment 62088
  --> https://bugs.freedesktop.org/attachment.cgi?id=62088
R600_DUMP_SHADERS=1 output from working Mesa 8.0.2

shader dump from working:
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD RV730
OpenGL version string: 2.1 Mesa 8.0.2
OpenGL shading language version string: 1.20
OpenGL extensions:

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[Bug 50338] r600g: EE r600_shader.c:140 r600_pipe_shader_create - translation from TGSI failed !

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=50338

--- Comment #2 from Török Edwin <edwin+mesa@etorok.net> 2012-05-26 01:52:16 PDT ---
Tried to bisect and I got to the commit
(783e4da72aa203a645737dec81b001341951a942) that introduced GPR limit checking.
Before that commit the shader compiles, but the rendered output is wrong (see
#50325).

However in Mesa git master I don't see the GPR limit error.
Bisecting again to see where the GPR limit message was lost I get to the point
where GLSL 1.30 was enabled:
12bedaa24ba8f4cdb3f2b58482ce8f9ac5715703 is the first bad commit
commit 12bedaa24ba8f4cdb3f2b58482ce8f9ac5715703
Author: Dave Airlie <airlied@redhat.com>
Date:   Sat Apr 21 10:37:08 2012 +0100

    r600: enable glsl 1.30 on r700

    I've done a piglit run on rv740 and confirmed no regressions.

    We don't get GL3 on r700 due to transform feedback being busted still.

    Signed-off-by: Dave Airlie <airlied@redhat.com>


The problem is probably still that there are too many registers, except that
message is no longer printed.

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[Bug 50338] r600g: EE r600_shader.c:140 r600_pipe_shader_create - translation from TGSI failed !

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=50338

--- Comment #3 from Vadim Girlin <ptpzz@yandex.ru> 2012-05-26 03:11:52 PDT ---
(In reply to comment #2)

> The problem is probably still that there are too many registers, except that
> message is no longer printed.

Yes, you are right. I think the message is not printed because the build fails
before that check - register count is checked when the shader is built, to get
the exact number with additional temporary registers etc. We can do additional
check before the build, to catch more problematic cases, but on the other hand
we have the error message anyway, though not so descriptive, and broken shader
code won't be used on gpu - so there are no lockups.

I doubt that non-LLVM shader backend will be able to handle that shader anytime
soon. LLVM backend currently can't handle it due to another problem, but it's
going to be fixed.

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[Bug 50338] r600g: EE r600_shader.c:140 r600_pipe_shader_create - translation from TGSI failed !

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https://bugs.freedesktop.org/show_bug.cgi?id=50338

Gert Wollny <gw.fossdev@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Gert Wollny <gw.fossdev@gmail.com> ---
This should be fixed since v17.3.

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