[Bug 97232] Line rendering broken in Dolphin when using gl_ClipDistance

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Aug 7 00:18:01 UTC 2016


            Bug ID: 97232
           Summary: Line rendering broken in Dolphin when using
           Product: Mesa
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: jules.blok at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 125581
  --> https://bugs.freedesktop.org/attachment.cgi?id=125581&action=edit
apitrace file

We've added a user-defined clipping plane (gl_ClipDistance) to our vertex
shader, unfortunately this breaks our geometry shaders on the Intel drivers. It
seems that the software rasterizer (llvm) does handle this case correctly.

I've attached an apitrace to reproduce the problem.

Expected output:

Actual output:

You can also take a look at this issue on our automated testing system: 

And here is the relevant PR where we are running into this issue:

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