[Bug 91480] Dead Island: Crash loading Act 3 possible shader issue

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=91480

            Bug ID: 91480
           Summary: Dead Island: Crash loading Act 3 possible shader issue
           Product: Mesa
           Version: 10.6
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: sa@whiz.se
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 117408
  --> https://bugs.freedesktop.org/attachment.cgi?id=117408&action=edit
backtrace with 10.5.9

I'm getting a reproducible crash in the game Dead Island when loading act 3.

Sometimes this is a straight segfault, sometimes the game pops up a warning "An
unknown error occured  while compiling shaders."

I'm attaching a backtrace of the segfault from Mesa 10.5.9, I still get the
error with 10.6.3.

This might be a shader issue, I get this warning in the game log:

/media/Data/perforce/di/releases/di_master_steambox/src/engine/ropengl/ROpenGL_Shader.cpp(471)
: 
Condition: 0 && "Cannot compile GL shader!"
LLOG: 0:35(12): warning: extension `GL_ATI_draw_buffers' unsupported in
fragment shader
0:209(3): error: syntax error, unexpected '='
ERRR: Assertion failed!
/media/Data/perforce/di/releases/di_master_steambox/src/engine/ropengl/ROpenGL_Shader.cpp(678)
: 
Condition: 0 && "Compilation of shader failed!"
ERRR: [CPShader] cannot create pixel shader
LLOG: binlen: 0; format: 0; program: 48828 
LLOG: FAILED TO LOAD BINARY!!! Loading from sources.TOTAL TIME: 247398.718750ms

I'm attaching the failing shader.

I'm failing this against r600g as that's where the backtrace points, but this
is probably a general shader issue.

Probably not the same as #85564 as I have played through half the game with
just a few hiccups.

Side note: this title might be a good candidate for some sort of cache. Loading
times are more than a minute and it seems to be spending most of that time
compiling.

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