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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Mathematica 3D graphics not displayed anymore with xf86-video-intel-2.99.912-125.1.x86_64"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79999#c14">Comment # 14</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Mathematica 3D graphics not displayed anymore with xf86-video-intel-2.99.912-125.1.x86_64"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79999">bug 79999</a>
              from <span class="vcard"><a class="email" href="mailto:jclw@ymail.com" title="Leo Wolf <jclw@ymail.com>"> <span class="fn">Leo Wolf</span></a>
</span></b>
        <pre>Yes, that behaves as it should.

(In reply to <a href="show_bug.cgi?id=79999#c13">comment #13</a>)
<span class="quote">> Ok, can you try

> diff --git a/src/sna/sna_dri2.c b/src/sna/sna_dri2.c
> index efc790f..3d3c50d 100644
> --- a/src/sna/sna_dri2.c
> +++ b/src/sna/sna_dri2.c
> @@ -1485,6 +1485,8 @@ can_xchg(struct sna * sna,
>         WindowPtr win = (WindowPtr)draw;
>         PixmapPtr pixmap;
>  
> +       return false;
> +
>         if (draw->type == DRAWABLE_PIXMAP)
>                 return false;

> to see if it using xchg swaps or if it is a side-effect of that patch on the
> regular code that broke Mathematica?</span ></pre>
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