public override unsafe void LoadLibraries()
{
base.LoadLibraries();
if (!(Instance is null))
{
throw new InvalidOperationException("Only one SilkActivity may be present throughout the whole application.");
}
Instance = this;
SetupMain(SilkMarshal.DelegateToPtr(CurrentMain));
}
public static unsafe Func <string, nint> GetLoader(bool alwaysPresent, out nint loaderPtr, out nint ctxLoaderPtr)
{
var wrapper = new nint[2];
var theDelegate = (LoaderDelegate)Loader;
// The wrapper array is so the delegates can use eachothers resources without having to worry about
// modifications outside of the delegate's scope.
wrapper[0] = loaderPtr = SilkMarshal.DelegateToPtr(theDelegate);
wrapper[1] = ctxLoaderPtr = SilkMarshal.DelegateToPtr((ContextLoaderDelegate)((_, x) => theDelegate(x)));
return(x => theDelegate((byte *)SilkMarshal.StringToPtr(x)));
nint Loader(byte *x) => SilkMarshal.PtrToString((nint)x) switch
{
"alcIsExtensionPresent" or "alIsExtensionPresent" => alwaysPresent
? (nint)(delegate * unmanaged[Cdecl] < byte *, int >) & AlwaysOne
: (nint)(delegate * unmanaged[Cdecl] < byte *, int >) & AlwaysZero,
"alGetProcAddress" => wrapper[0],
"alcGetProcAddress" => wrapper[1],
"alGetEnumValue" => (nint)(delegate * unmanaged[Cdecl] < byte *, int >) & AlwaysZero,
_ => 0
};
}
