Metal Buffer reinterpret with offset = 1

[pixelnerve]

I had to change this offset to 0. I'm not really sure what's going on there, but maybe it is a bug, maybe not. It was for me.

https://github.com/Unity-Technologies/HLSLcc/blob/master/src/toMetalDeclaration.cpp#L1019

[aet]

This is because the Unity implementation allocates a bit of extra into compute buffers. The first 4 bytes are always reserved for compute counters to make things simple. To use current implementation as-is, some offset handling in the Metal runtime code is required

[Xottab-DUTY]

Probably, we can add some option or something like this?