I am criticizing the part where they allowed [3]u8 to u24 bitCast in the first place. It doesn't make sense logically as u24 is likely not 24 bits in any targets let alone portably on every target.

Interpreting u24 like it is actually 24 bits sounds like programming in crazy land since it is not 24 bits in any relevant architecture afaik.

They didn't allow []u24 with a similar rationale as far as I can remember. I agree with this as someone programming at this level should be able to understand there is no real u24 layout and they should use []u32. Going with the same magical rational they went with here, compiler should generate unaligned u24 loading code when you use []u24 since it is "logically 24 bits"

> many GPUs

Citation please - every single GPU in the literal world supports integer arithmetic for operating on tid, gid, etc.