Direct3D feature levels discussion

Discussion in 'Rendering Technology and APIs' started by DmitryKo, Feb 20, 2015.

  1. CarstenS

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    I was just comparing numbers, let me cross-check. edit: You're right, I'll edit.
    edit 2: Dang, I should resume keeping my DX caps table...
    edit 3:
     
    #1101 CarstenS, Nov 18, 2020
    Last edited: Nov 19, 2020 at 10:02 AM
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  2. CarstenS

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    Did this, but it's still reporting SM 6_5 on RTX 30.
     
  3. Pinstripe

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    You likely need to have 460 or 465 branch drivers installed on Win 10 21H1 to show any SM 6.6 support.
     
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  4. DegustatoR

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    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.
     
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  5. DmitryKo

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    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)
    
    Comparing to RTX2080/3090, features are roughly a match, with the same variable shading rate tier (2), better sample feedback tier (1_0 vs 0_9), and lower view instancing tier (1 vs 3).
     
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  6. Rodéric

    Rodéric a.k.a. Ingenu
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    Is there a WDDM version in which using GPU virtual memory won't suck ? (ie be as slow as a snail ?)
     
  7. Alessio1989

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