QUESTION What's the best way to add painted lines on track surface?

Discussion in 'Tracks' started by chrisallen76, Feb 21, 2021.

  1. chrisallen76

    chrisallen76 New Member

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    Hi guys,

    Very new to track building, but using Blender following LilSki's tutorial series (which I'm hoping gets more videos at some point)

    I'm capable of creating the track and modeling some terrain but I dont know the best way to add in painted lines on the track (grid boxes, track lines, pit entrance/exit etc)

    I've tried 2 methods:

    method 1: subdivide the visual road serface and assign a paint material to where I want the lines. (this works but looks a but unrealistic for some reason.. could be my textures.

    method 2: create new 2d planes to "sit" on the roads surface, which then causes z fighting, causing me to have to raise the lines above the serface, but then they look like they're floating.

    anyone care to share any best practices for this?

    Thanks
     
  2. Johnr777

    Johnr777 Moderator

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    The second method is the most common, and it just needs a bit of trial and error to find a height that won’t cause Z fighting and won’t look like it’s floating. I work in meters, so mine are usually 0.03 - 0.05 above the surface
     
  3. maruto

    maruto Member

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    i also used that second method recently, 0.03m above visual surface

    here are the settings i used:

    ksperpixelAT shader
    alphaBLEND opacity mode

    upload_2021-2-22_9-11-11.png

    upload_2021-2-22_9-20-27.png


    another way you'll find is to paint the lines directly on the road surface texture, beeing the easiest's one, you get some kind of a blurry effect at a far distance... but it works, some older games like gtl and RF used that method a lot... I recently helped on the Siracusa conversion and was lazy redoing the lines as mentionned above, i simply reworked on the original surface texture, cranked up the resolution (original was 256x256) and with a good multilayer shader, the result is not that bad....

    upload_2021-2-22_9-43-56.png

    use object inspector app to explore kunos's track and others to see how it's done, quite helpful
     
    Last edited: Feb 22, 2021
  4. chrisallen76

    chrisallen76 New Member

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    Thanks for the info, much appreciated.
     
    Last edited: Feb 22, 2021
  5. EKO Sim-Racing

    EKO Sim-Racing Well-Known Member

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  6. fughettaboutit

    fughettaboutit aka leBluem

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    make those line-objects not CAST_SHADOWS, then they look less like floating

    shader ksperpixelAT
    blendmode alphaTEST
    without setting object to transparent is a wee bit better for performance, but looks a wee bit worse
     
  7. fughettaboutit

    fughettaboutit aka leBluem

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    And I would put them 1.5cm above the road
    then you can put the groove/skidmarks 3cm above it all
     
    Last edited: Feb 24, 2021
    chrisallen76 and maruto like this.
  8. EKO Sim-Racing

    EKO Sim-Racing Well-Known Member

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    I put them even 1cm off ground but whatever works for you :) that way you don’t see clipping of the wheels on the decal
     
    fughettaboutit likes this.
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