OpenAL ReopenDevices extension doesn't work

[okaniku]

Summary

The OpenAL ReopenDevices extension doesn't seem to work.

Steps to reproduce

After setting a current context, and calling
reopenDevices.ReopenDevice(device, deviceName, attrList);
I get 'Native symbol not found (Symbol: alcReopenDeviceSOFT)'

Comments

I'm wondering whether it's because this is an ALC prefixed extension, and the extension class derives from NativeExtension<AL> rather than ContextExtensionBase.

Ref: https://github.com/dotnet/Silk.NET/blob/main/src/OpenAL/Extensions/Silk.NET.OpenAL.Extensions.Soft/ReopenDevices.cs

Interestingly, getting the extension in the first place works fine from the AL API:

al = AL.GetApi(true);
al.TryGetExtension(out ReopenDevices reopenDevices);

Is this a bug or something I'm doing wrong?

[Perksey]

It would appear that this is a bug, this should be a context extension.

[okaniku]

Unfortunately it's still not working, even after changing it to a context extension.

Strangely, I'm able to successfully call the underlying function by doing this:

using var alc = ALContext.GetApi(true);
var deviceName = string.Empty;
var dev = alc.OpenDevice(deviceName);
var ctx = alc.CreateContext(dev, null);
alc.MakeContextCurrent(ctx);

if (dev != null && alc.TryGetExtension(dev, out ReopenDevices ext))
{
    var maxName = SilkMarshal.GetMaxSizeOf(deviceName, NativeStringEncoding.UTF8);
    var nameNative = deviceName.Length > 256 ? new byte[maxName] : stackalloc byte[maxName];
    fixed (byte* namePtr = nameNative)
    {
        ((delegate* unmanaged[Cdecl]<Device*, byte*, int*, bool>) alc.GetProcAddress(dev, "alcReopenDeviceSOFT"))(dev, namePtr, null);
    }
}

[Perksey]

@okaniku Can you compare the results of alc.Context.GetProcAddress("alcReopenDeviceSOFT") vs alc.GetProcAddress("alcReopenDeviceSOFT")

Relevant code:

https://github.com/dotnet/Silk.NET/blob/main/src/OpenAL/Silk.NET.OpenAL/ALC/ALContext.cs#L98

[okaniku]

Calling alc.Context.GetProcAddress() throws the same error. NativeLibrary3.TryGetExport() returns false, stack trace:

Silk.NET.Core.Loader.LibraryLoader.NetNextNativeLibraryLoader.CoreLoadFunctionPointer(nint handle, string functionName)
Silk.NET.Core.Loader.LibraryLoader.LoadFunctionPointer(nint handle, string functionName)
Silk.NET.Core.Loader.UnmanagedLibrary.LoadFunction(string name)
Silk.NET.Core.Contexts.DefaultNativeContext.GetProcAddress(string proc, int? slot)
Silk.NET.Core.Contexts.MultiNativeContext.GetProcAddress(string proc, int? slot)