[Mesa-dev] [Bug 99849] Dashed lines (drawn via GLAMOR) are not rendered correctly

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Feb 20 17:54:56 UTC 2017


--- Comment #2 from Max Staudt <mstaudt at suse.de> ---
(In reply to Brian Paul from comment #1)
> Which software renderer?  swrast, softpipe, llvmpipe, swr?  I just did a
> quick test of softpipe and llvmpipe and stippled lines look OK here.
> Which version of Mesa are you using?

I am running stock components included in openSUSE Leap 42.2:
  Xephyr 1.18.3
  Mesa 11.2.2

>From glxinfo when run in Xephyr:
  OpenGL vendor string: VMware, Inc.
  OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.8, 256 bits)
  OpenGL core profile version string: 3.3 (Core Profile) Mesa 11.2.2
  OpenGL core profile shading language version string: 3.30

To reproduce this, start Xephyr like this:
  Xephyr -glamor :99

Then, run the program like this:
  DISPLAY=:99 ./x11dash

When you omit the -glamor parameter to Xephyr, or run on a system that does not
use GLAMOR (such as with stock xf86-video-intel DDX), X will use its internal
fallback software renderer for 2D drawing commands. It's important to involve
the GLAMOR subsystem to reproduce this bug.

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