Direct3D feature levels discussion
- Thread starter DmitryKo
- Start date
Did this, but it's still reporting SM 6_5 on RTX 30.
You likely need to have 460 or 465 branch drivers installed on Win 10 21H1 to show any SM 6.6 support.
DegustatoR
Veteran
Yeah, SM 6.6 doesn't seem to be supported on NV h/w even as an experimental feature yet. Will come eventually though, and to Turings too most likely.
DmitryKo
Veteran
I've checked D3D12DDI_SHADER_MODEL in the Insider Preview SDK/WDK, and experimental SM 6_6 is supported with WDDM 2.7, i.e. Windows 10 build 1904x (versions 2004/2009 etc).
WDDM 2.8/2.9 (Insider Preview Manganese / Iron) support 6_6 release and 6_7 experimental.
But of course user-mode video driver needs to explicitly enable them.
In comparison to RX5700:
Code:
BarycentricsSupported : 1
RaytracingTier : D3D12_RAYTRACING_TIER_1_1 (11)
PerPrimitiveShadingRateSupportedWithViewportIndexing : 1
VariableShadingRateTier : D3D12_VARIABLE_SHADING_RATE_TIER_2 (2)
ShadingRateImageTileSize : 8
MeshShaderTier : D3D12_MESH_SHADER_TIER_1 (10)
SamplerFeedbackTier : D3D12_SAMPLER_FEEDBACK_TIER_1_0 (100)
Alessio1989
Regular
I like the dynamic resource binding!
There's a tiny little bit about WDDM 3.0 in here:
https://linuxplumbersconf.org/event.../700/1295/XDC_-_WSL_Graphics_Architecture.pdf
Seems about virtualization.
https://linuxplumbersconf.org/event.../700/1295/XDC_-_WSL_Graphics_Architecture.pdf
Seems about virtualization.
DmitryKo
Veteran
I think it's something else. If you read the original Microsoft blog post "Direct3D loves Linux", DXGK paravirtualization DDIs required by Direct3D 12 for WSL2 are available since WDDM 2.5. New is supports bundling of proprietary Direct3D12 User Mode Driver binaries for WSL2 with graphics driver packages, but this already works in Windows 10 Iron with WDDM 2.9 WSL2 preview drivers, and version 2.10 would be more appropriate for small refinements than a major version bump.
Last edited:
DegustatoR
Veteran
Can it be 2.10 without breaking something? Maybe they've just ran out of decimals in 2.x?
DmitryKo
Veteran
You're right - driver model version is an integer constant in the WDK header file, and 2.10 would break their established decimal encoding pattern. Doh!
Code:
KMT_DRIVERVERSION_WDDM_2_9 = 2900
Last edited:
DavidGraham
Veteran
What are the main features of the new version?
DmitryKo
Veteran
New APIs/DDIs are not published yet. If you look at the Windows Insider Flight Hub, preview SDK/WDK builds typically take off with a slight delay. Maybe this week nope, no flight is coming today.
For details, you have to look up Windows Insider Blog, as well as DirectX Developer Blog, What's New for Dispay and Graphics Drivers on Microsoft Docs, and DirectX Specs on GitHub. But they rarely include new WDDM features currently tested in Insider Preview channels.
For details, you have to look up Windows Insider Blog, as well as DirectX Developer Blog, What's New for Dispay and Graphics Drivers on Microsoft Docs, and DirectX Specs on GitHub. But they rarely include new WDDM features currently tested in Insider Preview channels.
Last edited:
DmitryKo
Veteran
BTW Adrenalin driver v21.2.1 adds finer compute preemption granularity with preliminary support for hardware-accelerated scheduler on RDNA cards (the latter is also available with WU driver 27.20.14502.208 for insider builds). Here's how Insider Preview "Cobalt" reports it on my RX 5700 XT:
The control for enabling the scheduler is still not showing in System - Display - Graphics Settings - Advanced...
Code:
Video driver version : 27.20.14533.1000
WDDM version : KMT_DRIVERVERSION_WDDM_2_7 (2700)
Hardware-accelerated scheduler : Enabled, DXGK_FEATURE_SUPPORT_EXPERIMENTAL (1)
ComputePreemptionGranularity : DXGI_COMPUTE_PREEMPTION_DISPATCH_BOUNDARY (1)The control for enabling the scheduler is still not showing in System - Display - Graphics Settings - Advanced...
Last edited:
Code:
Direct3D 12 feature checker (May 2020) by DmitryKo (x64)
https://forum.beyond3d.com/posts/1840641/
Windows 10 version 2009 (build 19042.804 vb_release) x64
Checking for experimental features SM6 TR4 META
ADAPTER 0
"Intel(R) Iris(R) Xe Graphics"
VEN_8086, DEV_9A40, SUBSYS_22128086, REV_01
Dedicated video memory : 128.0 MB (134217728 bytes)
Total video memory : 8191.3 MB (8589156352 bytes)
Video driver version : 27.20.100.9168
WDDM version : KMT_DRIVERVERSION_WDDM_2_7 (2700)
Hardware-accelerated scheduler : Disabled, not supported
GraphicsPreemptionGranularity : DXGI_GRAPHICS_PREEMPTION_TRIANGLE_BOUNDARY (2)
ComputePreemptionGranularity : DXGI_COMPUTE_PREEMPTION_THREAD_GROUP_BOUNDARY (2)
Maximum feature level : D3D_FEATURE_LEVEL_12_1 (0xc100)
DoublePrecisionFloatShaderOps : 0
OutputMergerLogicOp : 1
MinPrecisionSupport : D3D12_SHADER_MIN_PRECISION_SUPPORT_16_BIT (2) (0b0000'0010)
TiledResourcesTier : D3D12_TILED_RESOURCES_TIER_3 (3)
ResourceBindingTier : D3D12_RESOURCE_BINDING_TIER_3 (3)
PSSpecifiedStencilRefSupported : 1
TypedUAVLoadAdditionalFormats : 1
ROVsSupported : 1
ConservativeRasterizationTier : D3D12_CONSERVATIVE_RASTERIZATION_TIER_3 (3)
StandardSwizzle64KBSupported : 0
CrossNodeSharingTier : D3D12_CROSS_NODE_SHARING_TIER_NOT_SUPPORTED (0)
CrossAdapterRowMajorTextureSupported : 1
VPAndRTArrayIndexFromAnyShaderFeedingRasterizerSupportedWithoutGSEmulation : 1
ResourceHeapTier : D3D12_RESOURCE_HEAP_TIER_2 (2)
MaxGPUVirtualAddressBitsPerResource : 44
MaxGPUVirtualAddressBitsPerProcess : 48
Adapter Node 0: TileBasedRenderer: 0, UMA: 1, CacheCoherentUMA: 1, IsolatedMMU: 1, HeapSerializationTier: 0, ProtectedResourceSession.Support: 1, ProtectedResourceSessionTypeCount: 1 D3D12_PROTECTED_RESOURCES_SESSION_HARDWARE_PROTECTED
HighestShaderModel : D3D12_SHADER_MODEL_6_5 (0x0065)
WaveOps : 1
WaveLaneCountMin : 16
WaveLaneCountMax : 16
TotalLaneCount : 1536
ExpandedComputeResourceStates : 1
Int64ShaderOps : 1
RootSignature.HighestVersion : D3D_ROOT_SIGNATURE_VERSION_1_1 (2)
DepthBoundsTestSupported : 1
ProgrammableSamplePositionsTier : D3D12_PROGRAMMABLE_SAMPLE_POSITIONS_TIER_1 (1)
ShaderCache.SupportFlags : D3D12_SHADER_CACHE_SUPPORT_SINGLE_PSO | LIBRARY | AUTOMATIC_INPROC_CACHE | AUTOMATIC_DISK_CACHE (15) (0b0000'1111)
CopyQueueTimestampQueriesSupported : 1
CastingFullyTypedFormatSupported : 1
WriteBufferImmediateSupportFlags : D3D12_COMMAND_LIST_SUPPORT_FLAG_DIRECT | BUNDLE | COMPUTE | COPY (15) (0b0000'1111)
ViewInstancingTier : D3D12_VIEW_INSTANCING_TIER_2 (2)
BarycentricsSupported : 0
ExistingHeaps.Supported : 1
MSAA64KBAlignedTextureSupported : 1
SharedResourceCompatibilityTier : D3D12_SHARED_RESOURCE_COMPATIBILITY_TIER_2 (2)
Native16BitShaderOpsSupported : 1
AtomicShaderInstructions : 0
SRVOnlyTiledResourceTier3 : 1
RenderPassesTier : D3D12_RENDER_PASS_TIER_0 (0)
RaytracingTier : D3D12_RAYTRACING_TIER_NOT_SUPPORTED (0)
AdditionalShadingRatesSupported : 1
PerPrimitiveShadingRateSupportedWithViewportIndexing : 0
VariableShadingRateTier : D3D12_VARIABLE_SHADING_RATE_TIER_1 (1)
ShadingRateImageTileSize : 0
BackgroundProcessingSupported : 0
MeshShaderTier : D3D12_MESH_SHADER_TIER_NOT_SUPPORTED (0)
SamplerFeedbackTier : D3D12_SAMPLER_FEEDBACK_TIER_0_9 (90)
Failed to query feature data 8
Error 80070057: The parameter is incorrect.
DirectML maximum feature level : DML_FEATURE_LEVEL_2_0 (0x2000)
Metacommands enumerated : 8
Metacommands [parameters per stage]: Conv (Convolution) [84][1][6], GEMM (General matrix multiply) [67][1][6], Pooling [44][1][4], Conv (Convolution) [108][5][6], GEMM (General matrix multiply) [91][5][6], MVN (Mean Variance Normalization) [91][5][6], Pooling [56][3][4], LSTM (Long Short-Term Memory) [252][10][13]As mentioned elswhere, I was surprised that Intels latest and greatest did not have Mesh Shader enabled and also only the lower tier Variable Rate Shading.
I hope for the best for Xe HPG and of course that this is only a driver issue for now.
Xe-LP would miss some DX12U features regardless, so they could have just figured "why bother with any" for it. Xe-HPG on the other hand has been confirmed to support RT and I doubt they would have been so shortsighted that they'd miss other DX12U features (especially since we already know MS can give some leeway like they did for NVIDIA)