[mmozeiko]

xor swap trick was useful in older simd (sse1/sse2) when based on some condition you want to swap values or not:

  tmp = (a ^ b) & mask
  a ^= tmp
  b ^= tmp

If mask = 0xfff...fff then a/b will be swapped, otherwise if mask = 0 then they'll remain the same.

[CJefferson]

Oh, that is cool, I’ve never seen that. I might add that to an extended version of the post sometime, I’ll be sure to credit you.

[jagged-chisel]

So mask is marking the bits you want swapped and leaving the others in place.

[koolala]

Could this still be the ideal way for vectors of Ints in WebGL2?

[jesse__]

That's hella cute