Not working on macos M1 chip.

[Aganthor]

Hello!

This crate can't compile on a MacBook air with the M1 CPU.

Example of some of the error message:
error[E0425]: cannot find function, tuple struct or tuple variant F32x4 in this scope --> /Users/luc/.cargo/registry/src/github.com-1ecc6299db9ec823/simdnoise-3.1.6/src/sse41.rs:365:9 | 365 | F32x4(gain), | ^^^^^ not found in this scope

I've read that the M1 chip supports SIMD, but only the Neon instruction sets. Is this why it's not working?

Thanks in advance.

[jackmott]

Correct, currently only intel/amd SIMD variants are supported. It is possible to add support for NEON, just a lot of grunt work.

[jackmott]

And its the Simdeez library that needs to add support, then it would more or less "just work" in this noise library: https://github.com/arduano/simdeez

[thomasza92]

Hello! I was able to compile the Simdeez library on apple silicon with cargo build --target aarch64-apple-darwin. It would be great if this library supported Apple Silicon! Thanks so much for all the hard work!

[valadaptive]

Even if platform-specific SIMD implementations are absent, shouldn't the code fall back to the scalar implementation rather than failing to compile?

[verpeteren]

@valadaptive: It is working indeed (on m2, falling back to scalar.
@thomasza92: Indeed, simdeez now also has the neon instructions ready.
I made a start to prepare simdnoise for neon, stay tuned.