https://bugs.freedesktop.org/show_bug.cgi?id=95266
--- Comment #9 from Roland Scheidegger <srol...@vmware.com> ---
FWIW it was not the samplers returning NaN for the float texture, but rather
the _coords_ being NaNs (thus the results from sampling could be anything,
though it is possible some implementations would use 0.0 as coord instead). But
those coords came from the vs, which seemed simple enough. So possibly the NaNs
might have been the result of a previous render pass. (It is of course also
possible some shader is simply bogus and relying on NaNs getting flushed to
zero somewhere on output.)
It would indeed be helpful to know if hw drivers are affected too.
(Using vtk sources to reproduce is pretty easy.)
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