[Webkit-unassigned] [Bug 232071] Hardware PCF filtering does not work on iOS 15 when using WebGL2

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232071

--- Comment #7 from Kyle Piddington <kpiddington at apple.com> ---
Thanks for having a look.

I've found a related issue from the SPIRV-Cross team:
https://github.com/KhronosGroup/SPIRV-Cross/issues/533

It seems by inserting a constexpr sampler into our shadow sampler function, we're able to return PCF functionality to this shader. Right now, I'm double checking if this is a case of state initialization gone wrong, or if we've missed some restriction.

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