[Piglit] [PATCH] Test that the fs gl_PrimitiveID input works even when there's no gs.

[Eric Anholt]

Paul Berry <stereotype441 at gmail.com> writes:

> For i965/gen7 hardware, the driver has to go to extra work to make
> gl_PrimitiveID work in the case where there is no geometry shader.  So
> we need a separate test to make sure that works properly.

Reviewed-by: Eric Anholt <eric at anholt.net>
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