[Bug 101408] [Gen8+] Xonotic fails to render one of the weapons

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101408

--- Comment #9 from Mark Janes <mark.a.janes at intel.com> ---
Thanks for narrowing this down Andriy.

You can confirm that this is a driver bug (not an app bug) by retracing the
working & broken trace files on other drivers/hardware:

 - Intel Windows OpenGL
 - AMD Radeon
 - Nvidia 

If they render better than i965 Mesa, then it is probably a driver bug.

Secondly, you can find the problematic shader using FrameRetrace:

  https://github.com/janesma/apitrace/wiki/frameretrace-branch

For a short demo of how to find the shader for the bad render, watch this video
starting around the 10min mark:

 https://fosdem.org/2018/schedule/event/apitrace/

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