WIP Beta released Procedural Wheel Motion Blur

Discussion in 'Mods and Skins' started by Ellexium, Sep 2, 2026.

  1. Ellexium

    Ellexium
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    Yeah, I've definitely noticed and have been eyeing the mods tab since I started working on this, It's just that the imgui menu has made testing and development a lot easier tbh. But when I stop working on it as heavily I'll for sure look into it,

    And yeah I definitely considered hubcabs, their materials fall into the classification system so they get blurred just like the rest of the wheel, and the material underneath them automatically get classed as wheel materials as well so they get blurred as well. I've tested (and am testing/improving) the classification system on every config in the game including a few mods to catch as many cases as possible
     
    #21 Ellexium, Sep 3, 2026
    Last edited: Sep 3, 2026
  2. michel p

    michel p
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    upload_2026-9-4_18-13-52.png
    when crashing, wheels look like this
     
  3. Ellexium

    Ellexium
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  4. michel p

    michel p
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    Ibishu BX runner
     
  5. Ellexium

    Ellexium
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    Thanks, gonna look into this
    --- Post updated ---
    Found the cause and fixed it, I'm gonna roll the fix into the next update which should drop pretty soon
     
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  6. NismoR35

    NismoR35
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    Working quite nicely if I must say so. :cool:
    screenshot_2026-09-05_01-33-09.png
     
  7. abrarsl

    abrarsl
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    Has anyone profiled the mod and checked what the performance impact is?
     
  8. realsnuuy

    realsnuuy
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    BeamNGdriveScreenshot20260905-20123296.png
    game cant load a car without breaking
     
  9. Ellexium

    Ellexium
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    could you tell me:
    • what car you tried to load
    • the map you tried to load it on
    • other mods you have installed
     
  10. Ellexium

    Ellexium
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    Procedural Wheel Motion Blur - V2

    Mesh Classification
    The mesh classification system got a geometry-based rescue path for wheel meshes that have no direct wheel-node overlap. In addition to using physical wheel-node overlap and wheel-related mesh or material names, SpinBlur can now group flexbodies that share the same JBeam node set and compare that node geometry against the vehicle’s physical wheel regions to confirm that the mesh is actually centered on a wheel. This allows parts like rims that would have been ineligible for blur before to be identified reliably while explicitly rejecting nearby stationary hardware such as brakes, hubs, spindles, drums, axles, and suspension parts.

    Mesh Classification System Visualized – (Red – Ineligible for Blur, Green – Allowed to be Blurred):

    Before:

    upload_2026-9-5_19-6-36.png

    After:
    upload_2026-9-5_19-6-58.png


    Visual Effect
    SpinBlur gained a new Inner Smooth Angular Rim Blur layer that complements rather than replaces the original Semi-Lagrangian reconstruction. The first version of the mod relied entirely on source-local velocity-field sampling, which produced convincing streaks across a wide range of wheel angles but could remain visibly sparse or spoke-like, while the new version can additionally reconstruct the inner rim by analytically rotating samples around the wheel's real axle to create a much fuller, smoother long-exposure appearance akin to 'Real Long Exposure' in Reshade. Based on how the effect works, it can look distorted at certain angles (like head on instead of laterally), so depending on how the wheel is viewed, it fades back into the Semi-Lagrangian technique automatically to avoid distortion of the blur.

    Before – Only Semi-Lagrangian:
    upload_2026-9-5_19-9-54.png

    After – Semi-Langrangian Mixed with Inner Smooth Angular Rim Blur
    upload_2026-9-5_19-11-43.png

    Effect Positioning
    A wheel alignment issue was fixed where the live blur could rotate around a slightly stale or incorrectly reconstructed wheel position instead of the wheel’s true current axle, causing the blur application surface and the rendered PostFX itself to look wrong. The mod had been estimating the wheel pose from older Vehicle-Lua data and compensating it using the vehicle body transform, which worked fairly well until suspension movement, steering, deformation, or timing differences caused the wheel to move independently of the body. Replays were already somewhat doing the right thing by reading the current axle-node positions directly, so that more accurate approach was promoted to normal live use as well. The blur, carrier, grouping, and wheel ownership geometry now all use the same current axle center and direction, eliminating the off-center distortion and keeping the blur locked to the actual rendered wheel. Interestingly, this more accurate method of wheel position reconstruction is actually more optimized than what it's superseding as well.

    Before – Incorrect Wheel Position Reconstruction
    upload_2026-9-5_19-14-44.png

    After – Corrected Wheel Position Reconstruction
    upload_2026-9-5_19-15-23.png

    Settings Menu
    There is now a settings menu in the mods tab dedicated to tweaking and tuning the look and feel of the blur. The old Imgui settings menu still exists though and can be toggled open or closed with the “Advanced Controls” button, although the most impactful controls are concentrated in the new Vue settings.
    upload_2026-9-5_19-17-26.png

    Seeing as a lot of the mod has been changed in some way, I’d recommend clearing your cache to avoid leftover temporary files from the older version of the mod. The first post will be updated with the new version of the mod attached.
     
    #30 Ellexium, Sep 6, 2026
    Last edited: Sep 6, 2026
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  11. .:Ω-420:.

    .:Ω-420:.
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    Just came back here to say thanks.
    Finally the pictures taken in photo mode look right when motion blur is enabled.
     
  12. frks3864

    frks3864
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    for some reason (on some wheels like the on in the picture) the mod replaces the main wheel material (of whatever wheel is installed) with a spinblur one without any textures
    mod works completely fine aside from this, though
     

    Attached Files:

    • Screenshot2026-09-06115339.png
  13. Ellexium

    Ellexium
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    thanks for the report, could you tell me the name of that mod it's doing that with?
     
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  14. frks3864

    frks3864
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    it's doing it with the vanilla alder dragger wheels (dw it has nothing to do with the car that the wheels are on)
     
  15. Ellexium

    Ellexium
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    have you closed the game yet? (if you haven't don't just yet
     
  16. frks3864

    frks3864
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    i'm still playing rn
     
  17. Ellexium

    Ellexium
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    Could you I send you a private message so I can keep helping you there?
     
  18. frks3864

    frks3864
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  19. Driver_1

    Driver_1
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    Is there a reason this isn't on the repo? It'd be great if it was!
     
  20. Hasservern

    Hasservern
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    Probably due to constant updates, its better to stay at the forums until the mod is stable.


    Speaking of, I havent downloaded the new updates but theres an issue where if you look really closely to the rims, it would show a very transparent grey checker textures. Certain rims would amplify the effects (something white and clean)
     
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