Now we reach the fun tier of shader language questions.

[dotstdy@mastodon.social]

Now we reach the fun tier of shader language questions. "i wonder what happens if i shift out of range"

[dotstdy@mastodon.social]

thankfully at the spir-v level this is answerable:

1) shifting out of range produces an unspecified value
2) if you annotate a shift instruction with `NoUnsignedWrap` or `NoSignedWrap`, then it becomes undefined behavior.

at the slang level it's specified as: <crickets>

edit: Reading the code a left shift in slang ir just produces OpShiftLeftLogical, so in practice, on the spir-v backend, it should behave as 1, barring any potential shenanigans in the slang optimisation pipeline itself.