[Mesa-dev] [Bug 90207] [r600g, bisected] regression: NI/Turks crash on WebGL Water (most WebGL stuff)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90207

José Fonseca <jfonseca at vmware.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jfonseca at vmware.com
          Component|Drivers/Gallium/r600        |Mesa core
           Assignee|dri-devel at lists.freedesktop |mesa-dev at lists.freedesktop.
                   |.org                        |org
         QA Contact|dri-devel at lists.freedesktop |mesa-dev at lists.freedesktop.
                   |.org                        |org

--- Comment #11 from José Fonseca <jfonseca at vmware.com> ---


(In reply to Dieter Nützel from comment #0)
[...]
> a563689a408b7a28c710fb0e382272a0d823f38a is the first bad commit
> commit a563689a408b7a28c710fb0e382272a0d823f38a
> Author: Tapani Pälli <tapani.palli at intel.com>
> Date:   Thu Apr 23 11:13:17 2015 +0300
> 
>     mesa: refactor active attrib queries for glGetProgramiv
>     
>     Main motivation here is to get rid of iterating IR and
>     encapsulate queries within program resources.
>     No functional changes.
>     
>     Piglit tests calling the modified functionality:
>     
>        - gl-get-active-attrib-returns-all-inputs
>        - glsl-1.50-get-active-attrib-array
>        - getactiveattrib
>     
>  [...]

Piglit `getactiveattrib 110` test started to randomly fail on llvmpipe:

$ for i in `seq 1 100`; do .../piglit/bin/getactiveattrib 110 -auto -fbo; done
PIGLIT: {"result": "pass" }
PIGLIT: {"result": "pass" }
PIGLIT: {"result": "pass" }
PIGLIT: {"result": "pass" }
PIGLIT: {"result": "pass" }
PIGLIT: {"result": "pass" }
PIGLIT: {"result": "pass" }
PIGLIT: {"result": "pass" }
Mesa: User error: GL_INVALID_VALUE in glGetActiveAttrib(index)

Failing shader:
attribute vec4 vertex;
attribute vec2 alternate;
uniform bool use_alternate;
void main() {
    gl_Position = vertex;
    if (use_alternate) gl_Position = alternate.xyxy;
}

Attribute `alternate' listed multiple times in active list.
PIGLIT: {"result": "fail" }
PIGLIT: {"result": "pass" }
PIGLIT: {"result": "pass" }


> When I revert 'a563689' all is smooth, again.

And likewise, if I revert a563689 it passes consistently.

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