This adds a new Bit Math node which supports the following operations: `and`,
`or`, `xor`, `not`, `shift` and `rotate`.
For the `shift` and `rotate` operations, a posititive shift is a left shift and
a negative shift is a right shift.
Currently, the node always works on 32-bit integers which is what Geometry Nodes
uses internally for integers. If required, this can be extended to work on other
bit widths in the future.
The need for this came up every now and then. It can be useful when encoding
specific bits in integer attributes (for efficiency or because the geometry is
exported to other software that expects a certain format). Also, this node is
useful for some people doing crazy but fun things with Geometry Nodes like
emulating hardware. Even if the use-cases are not common, if they arise, it's
hard to work around and the cost of having this node is quite low for us.
Co-authored-by: Charlie Jolly <charliejolly@noreply.localhost>
Pull Request: https://projects.blender.org/blender/blender/pulls/138290
39c2f01b51