.NET C# wrapper

[merco]

I've built with VS2019 meshoptimizer.dll (0.22) with these options

I can't find definition for meshopt_dequantizeHalf, meshopt_quantizeHalf, meshopt_quantizeUnorm,meshopt_quantizeUnorm

this is my definition

[zeux]

So these two are somewhat separate issues:

• meshopt_quantizeUnorm and meshopt_quantizeSnorm are inline C++ functions. They have to be inline for a couple reasons, one is the function body is short and ideally would be inlined with a constant N which allows to constant fold most of the expressions which helps processing performance; the other is that they are used in a couple places in other meshoptimizer functions, and due to a policy of all source files being isolated they can't move to a .cpp file either. As such you can't use them via P/Invoke because they are not part of the DLL.

• meshopt_quantizeFloat, meshopt_quantizeHalf and meshopt_dequantizeHalf are regular functions that are compiled as part of the DLL; however, because two of them used to be inline in the header, they are not declared in the "extern C" block, so you can only import them through a C++ mangled name. This is not ideal though.

I think I'm going to fix the issue with the last three functions as there's no specific reason why they aren't extern "C" at this point. For quantizeUnorm/quantizeSnorm you should be able to copy their C++ code into your C# library with minimal changes.