[Bug 41827] Wrong specular rendering with some applications

https://bugs.winehq.org/show_bug.cgi?id=41827

--- Comment #3 from Axel D  ---
(In reply to Matteo Bruni from comment #2)
> It's more likely that we want max(t, 0.0) there.

The problem is then the behaviour of 0^0
> Do you want to have a go at extending / modifying test_specular_lighting()
> to check for this edge case?

It'd be a good thing to do, but I have spent already a lot of time on that bug,
and I'm not willing to spend more time on it.