Hi, is NV_DX_interop2 missing for WGL.Extensions?

[jcyuan]

I found Silk.NET.WGL.Extensions.NV.NVDXInterop only, but there is no extension for NV_DX_interop2.
or maybe there is, but i missed it?
by the way, what does those Overloads mean? for example NVDXInteropOverloads, is this actually the NV_DX_interop2?
thank you so much.

[Perksey]

NV_DX_interop2 does not add any new functions therefore it does not have a class generated. For more info see the specification: https://registry.khronos.org/OpenGL/extensions/NV/WGL_NV_DX_interop2.txt

[jcyuan]

NV_DX_interop2 does not add any new functions therefore it does not have a class generated. For more info see the specification: https://registry.khronos.org/OpenGL/extensions/NV/WGL_NV_DX_interop2.txt

thanks for reply, yeah i know that, actually it was the usage confused me, so how can i use NV_DX_interop2 with Silk.WGL? i assume that the Overloads will be auto used for those changes in NV_DX_interop2?

[Perksey]

Yes that's correct.

[jcyuan]

Yes that's correct.

Hi sir, sorry for bothering again,

i just found 2 problems:

1, this method is not implemented in WGL.cs:

so, if (wgl.TryGetExtension<NVDXInterop>(out var ext)) will fail.

2, NV_DX_interop does not exist in the extension string list. but i can still use wglGetProcAddress("wglDXOpenDeviceNV") to use those methods, not sure why, it's strange to me...

if i try to use the ext with a 'normal' way just like other extensions:

by this test code:

var wgl = WGL.GetApi();
var ext = new NVDXInterop(wgl.Context);
ext.DxopenDevice(out IntPtr device);
 ext.DxcloseDevice(device);

it will fail....

and if i just use it by using DllImport even it does not exist in the extension string list:

it just works....

[Perksey]

oops

[Perksey]

This will now be fixed as part of #2115 (the next update), and the fix is contained in commit dfb4225. If you would like to work around this in your own code, feel free to use this commit as inspiration.

[jcyuan]

This will now be fixed as part of #2115 (the next update), and the fix is contained in commit dfb4225. If you would like to work around this in your own code, feel free to use this commit as inspiration.

👏thanks so much.

[jcyuan]

hi @Perksey

i had applied your changes into my logic (as the official release is not ready yet),
i found that i can create NVDXInterop extension in my 'primary' context, once i try to create with any context created later (shared with the primary context), the creating will fail.

ex info: i manage all the created DCs in a single thread.

maybe i should wait for new official release?

[Perksey]

2.21 should have fixed this.

[jcyuan]

so fast! thanks so much @Perksey
but just had a try and it didn't work, here is the code:

[MethodImpl(MethodImplOptions.AggressiveInlining)]
 [SupportedOSPlatform("windows")]
 private INativeContext CreateNativeContext()
 {
 return WGL.CreateDefaultContext(["Opengl32"]);
 }

// ------

 var nativeContext = CreateNativeContext();
 
 using (MakeCurrent())
 {
 _gl = GL.GetApi(nativeContext);
 _wgl= WGL.GetApi(); // new WGL(nativeContext) not work too.
 }

// test
var test = _wgl.TryGetExtension(out NVDXInterop ext);

it throws exception: