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Subject: [Bug 105218] Regresion in 847d0a393d7f0f967f39302900d5330f32b804c8
Date: Thu, 22 Feb 2018 23:40:47 +0000
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Date: Thu, 22 Feb 2018 23:40:47 +0000
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X-Bugzilla-URL: http://bugs.freedesktop.org/
Auto-Submitted: auto-generated

https://bugs.freedesktop.org/show_bug.cgi?id=3D105218

            Bug ID: 105218
           Summary: Regresion in 847d0a393d7f0f967f39302900d5330f32b804c8
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: dark_sylinc@yahoo.com.ar
        QA Contact: dri-devel@lists.freedesktop.org

Our Terrain sample from Ogre 2.1 uses a compute shader to generate the shad=
ows
of the terrain, and later uses a special vs & ps to render the terrain.

What's special about that sample over the rest (that run fine) are:

1. The compute shader that generates the shadows
(https://bitbucket.org/sinbad/ogre/src/09181053ca69f4760b655c2eed5b5ca7d62f=
d7bc/Samples/Media/2.0/scripts/materials/Tutorial_Terrain/GLSL/TerraShadowG=
enerator.glsl?at=3Dv2-1&fileviewer=3Dfile-view-default).
The heigthmap is in format R16_UNORM, the generated shadows texture is in
RGB10A2
2. A PS that generates the normals
(https://bitbucket.org/sinbad/ogre/src/09181053ca69f4760b655c2eed5b5ca7d62f=
d7bc/Samples/Media/2.0/scripts/materials/Tutorial_Terrain/GLSL/GpuNormalMap=
per_ps.glsl?at=3Dv2-1&fileviewer=3Dfile-view-default).
The normals' texture are in RGB10A2
3. The VS has no vertex buffer bound, but rather relies on gl_VertexID and
integer ops
(https://bitbucket.org/sinbad/ogre/src/09181053ca69f4760b655c2eed5b5ca7d62f=
d7bc/Samples/Media/Hlms/Terra/GLSL/VertexShader_vs.glsl?at=3Dv2-1&fileviewe=
r=3Dfile-view-default#VertexShader_vs.glsl-66)
and reads the heightmap.

After commit 847d0a393d7f0f967f39302900d5330f32b804c8 and at least until la=
test
from today, running this sample causes an entire system freeze: Mouse curso=
r is
the only thing that responds. Keyboard does not respond, hard resetting is =
the
only way and tends to corrupt files in the drive (This was painful to bisec=
t).

Before this commit the sample behaves as expected.

My GPU is a Radeon RX 560 2GB

I can provide a binary with the failing sample, or instructions on how to b=
uild
from source (https://ogrecave.github.io/ogre/api/2.1/SettingUpOgreLinux.htm=
l).
Whatever you need.

I'm flagging this as blocker because of the security implications of freezi=
ng
the entire system with ease.

Cheers

--=20
You are receiving this mail because:
You are the assignee for the bug.=

--15193428470.FdB9FE0.22368
Date: Thu, 22 Feb 2018 23:40:47 +0000
MIME-Version: 1.0
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X-Bugzilla-URL: http://bugs.freedesktop.org/
Auto-Submitted: auto-generated

<html>
    <head>
      <base href=3D"https://bugs.freedesktop.org/">
    </head>
    <body><table border=3D"1" cellspacing=3D"0" cellpadding=3D"8">
        <tr>
          <th>Bug ID</th>
          <td><a class=3D"bz_bug_link=20
          bz_status_NEW "
   title=3D"NEW - Regresion in 847d0a393d7f0f967f39302900d5330f32b804c8"
   href=3D"https://bugs.freedesktop.org/show_bug.cgi?id=3D105218">105218</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Regresion in 847d0a393d7f0f967f39302900d5330f32b804c8
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>git
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>blocker
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/Gallium/radeonsi
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel&#64;lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>dark_sylinc&#64;yahoo.com.ar
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>dri-devel&#64;lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Our Terrain sample from Ogre 2.1 uses a compute shader to gene=
rate the shadows
of the terrain, and later uses a special vs &amp; ps to render the terrain.

What's special about that sample over the rest (that run fine) are:

1. The compute shader that generates the shadows
(<a href=3D"https://bitbucket.org/sinbad/ogre/src/09181053ca69f4760b655c2ee=
d5b5ca7d62fd7bc/Samples/Media/2.0/scripts/materials/Tutorial_Terrain/GLSL/T=
erraShadowGenerator.glsl?at=3Dv2-1&amp;fileviewer=3Dfile-view-default">http=
s://bitbucket.org/sinbad/ogre/src/09181053ca69f4760b655c2eed5b5ca7d62fd7bc/=
Samples/Media/2.0/scripts/materials/Tutorial_Terrain/GLSL/TerraShadowGenera=
tor.glsl?at=3Dv2-1&amp;fileviewer=3Dfile-view-default</a>).
The heigthmap is in format R16_UNORM, the generated shadows texture is in
RGB10A2
2. A PS that generates the normals
(<a href=3D"https://bitbucket.org/sinbad/ogre/src/09181053ca69f4760b655c2ee=
d5b5ca7d62fd7bc/Samples/Media/2.0/scripts/materials/Tutorial_Terrain/GLSL/G=
puNormalMapper_ps.glsl?at=3Dv2-1&amp;fileviewer=3Dfile-view-default">https:=
//bitbucket.org/sinbad/ogre/src/09181053ca69f4760b655c2eed5b5ca7d62fd7bc/Sa=
mples/Media/2.0/scripts/materials/Tutorial_Terrain/GLSL/GpuNormalMapper_ps.=
glsl?at=3Dv2-1&amp;fileviewer=3Dfile-view-default</a>).
The normals' texture are in RGB10A2
3. The VS has no vertex buffer bound, but rather relies on gl_VertexID and
integer ops
(<a href=3D"https://bitbucket.org/sinbad/ogre/src/09181053ca69f4760b655c2ee=
d5b5ca7d62fd7bc/Samples/Media/Hlms/Terra/GLSL/VertexShader_vs.glsl?at=3Dv2-=
1&amp;fileviewer=3Dfile-view-default#VertexShader_vs.glsl-66">https://bitbu=
cket.org/sinbad/ogre/src/09181053ca69f4760b655c2eed5b5ca7d62fd7bc/Samples/M=
edia/Hlms/Terra/GLSL/VertexShader_vs.glsl?at=3Dv2-1&amp;fileviewer=3Dfile-v=
iew-default#VertexShader_vs.glsl-66</a>)
and reads the heightmap.

After commit 847d0a393d7f0f967f39302900d5330f32b804c8 and at least until la=
test
from today, running this sample causes an entire system freeze: Mouse curso=
r is
the only thing that responds. Keyboard does not respond, hard resetting is =
the
only way and tends to corrupt files in the drive (This was painful to bisec=
t).

Before this commit the sample behaves as expected.

My GPU is a Radeon RX 560 2GB

I can provide a binary with the failing sample, or instructions on how to b=
uild
from source (<a href=3D"https://ogrecave.github.io/ogre/api/2.1/SettingUpOg=
reLinux.html">https://ogrecave.github.io/ogre/api/2.1/SettingUpOgreLinux.ht=
ml</a>).
Whatever you need.

I'm flagging this as blocker because of the security implications of freezi=
ng
the entire system with ease.

Cheers</pre>
        </div>
      </p>


      <hr>
      <span>You are receiving this mail because:</span>

      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>=

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