[Piglit] [PATCH] glx-multithread-makecurrent-*: Write the expected value for alpha

[Eric Anholt]

Ian Romanick <idr at freedesktop.org> writes:

> From: Ian Romanick <ian.d.romanick at intel.com>
>
> The tests would previously write 0.0 to the alpha and expect to read 1.0
> back.  If the test got a visual without alpha (and it doesn't request
> alpha), this would happen to work.  However, drivers are not required to
> expose visuals without alpha, so the test might get an RGBA visual
> afterall.

I had sent out a patch for this a week ago.  Sigh.
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