[Mesa-dev] mesa draw-instance topic v. point-only rendering in VTK tests

[Brad King]

Hi Brian,

One of your changes in commit range 21001d2b..652901e9 causes one of
the VTK tests to render an empty image:

  http://www.cdash.org/CDash/testDetails.php?test=79911707&build=826979

I think a63486ac is the first commit that exhibits the behavior.
This particular test renders only *points* with no other geometry.
Tests that render lines and polys do not fail.

Please take a look when you can and let me know if you need more
information.

Thanks,
-Brad