Win10 2004: WDDM 2.7 Support

They probably do not use the API as intended.

For some feature options, you are supposed to initialize the feature query with the highest possible value, or a list of highest possible values, that your code can understand - and that's what the API returns back even when the driver supports higher tiers (to avoid breaking your code with values defined in later versions of the SDK, which could be supported by the latest WDDM driver and Direct3D runtime, but will be unknown to your program logic ).

So if you are asking for SM 5.1 on SM 6.0 hardware, you will only get SM 5.1 as the highest supported shader model - but if you are asking for SM 6.5 on SM 6.0 hardware, you will get SM 6.0 as the highest (and SM 6.5 requires Windows 10 version 1903 - earlier versions will return E_INVALIDARG if you specify SM 6.5).
Same for feature levels - you have to provide a list of feature levels known to your program, and the runtime returns the highest of them which is actually supported by hardware (but in this case, you can trick the runtime with yet undefined levels - shh, don't tell anyone!).


[edit] AIDA64 reports SM 6.3 on the Display / GPU tab with the WDDM 2.7 preview driver, which is not correct; I've filed a bug report.
DirectX tab only shows Direct3D 11 information, and SM 5.1 is the highest supported in Direct3D 11.

 

Microsoft developer documentation quality got worse since they abandoned the good old MSDN library and changed a gazillion of platforms, breaking all the internal links and documentation mantainers not having time to listen to the feedbacks. Now everything is almost on github, unfortunately is not yet easy to see corrections applied.

 

I presume that's a typo. Isn't Shader Model 6.5 supported since Windows 10 2004?

 

большо́е спаси́бо comrade, that cleared my doubts. I read so many things about this that i didn't know which program should i trust, is gpu-z trustworthy to know your supported SM version?

 

Yes, all features reported by GPU-Z look correct for my RX 5700. Open the Advanced tab and select "DirectX 12" from the list.

The value was first defined in the SDK 182xx and could be checked with the Direct3D12 runtime since version 1903, but DXIL compiler and WDDM driver support was only implemented in version 2004 preview.

[edit] Recent WDDM 2.7 drivers from AMD, Nvidia and Intel do support SM 6.5 - older GPUs only support new Wave Intrinsics though, while DXR 1.1, sampler feedback, and mesh shaders are only supported by NVIDIA GeForce RTX right now.

 

Thx for clarification

 

Windows 10 May 2020 update should be released on May 26th, so I guess driver will be released on the same day

 

The AMD Software Crimson Control Panel has been updated via the Microsoft Sore to version 10.20.10012.0

 

I usually try to avoid one-liners but damn, that typo is on point!

 

LOL
The accuracy

 

Considering it's May 20, I gather WDDM 2.7 won't be coming until 20.6.1

 

Patience my friend, patience. I'm sitting here waiting for my new RX 570 OC 8GB card, maybe the new drivers will show before it does, um next Tuesday.

 

What makes you say that? Official release will be 26th-ish, so we can expect a driver from team Red and Green on that day or at least in the same week.

Team Blue was faster this time around though being 2 whole weeks ahead of schedule.

 

It's so close to a 20.6.1 that they may just do it then. I really don't mind too much since it gives them more time for bugfix.

 

Maybe they're going to fix a lot of stuff with the upcoming release

 

FYI, next AIDA64 beta 6.25.5423 will report the correct SM version.

Rather add a lot of stuff, like support for Radeon Memory Visualizer tool https://gpuopen.com/rmv/ which needs additional driver hooks.

 

just downloaded that aida 64 version and now it reports 6.4 as the shader model version. отлично сработано, comrade!

 

sniffs around for some new drivers...

 

2 days until 2004.

(eyy this sounds soo wrong, 3 more years and 2004 was 20 years ago wtf)

 

can I stay with drivers 19.9.2 with the upcoming new windows10 build?