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Tutorial - Objects for BTB with Sketchup

Discussion in 'Bob's Track Builder' started by Biggles1212, Oct 16, 2009.

  1. sti228

    sti228

    Messages:
    348
    Ratings:
    +74
    Kennett Ylitalo

    Of course everything is right you wrote here but i hate low poly tires. Agree that it's too much overdone for tire wall because i use 40 segments... Next time i will reduce it around 20-30 segments. 25 maybe ?

    [​IMG]
    [​IMG]

    I also have too much details for side wall and i will try to reduce it to. I want to make something like this:



    I hit car but i don't notice any FPS drop. Need to try it again with more tires together. Between thanks for response and the advices. Appreciated :)
     
    Last edited: Apr 21, 2016
  2. Kennett Ylitalo

    Kennett Ylitalo

    Messages:
    4,697
    Ratings:
    +3,936
    Sure, the smaller the scene, the more you can get away with. For cinematic, we basically don't use LOD at all but then we don't render at full speed anymore either. For games, you just need to do one or two LOD levels, 8 segments are fine for up to 100m, taking the backside out is easy trick that takes 50% of work away with zero quality loss but doesn't always work. It depends where the bottleneck is going to be, CPU, GPU or between them. Materials are usually easy with tirewalls, there should be only one material ;) That decreases drawcalls sooo much and those are what really matters.

    Stack a LOT of them in the test scene. I mean 5 to ten times more than you plan to use.. Try to choke your system, really benchmark how many tires can you put until your PC starts to really struggle (keep eye on PC temperature, this is a stress-test... ). Then you have baseline and making changes to assets gives you direct results; better or worse..
     
  3. martinez

    martinez

    Messages:
    745
    Ratings:
    +14
    24 segments for tyres is enough. You can try also even 12-18 if your texture is good or if you use bump map. Anyway, well done - I would do some thicker tyre side though :)
     
  4. sti228

    sti228

    Messages:
    348
    Ratings:
    +74
    Here is new tire wall with 24 segments and new 256x256 size textures :)

    [​IMG]

    Tire specification:
    Tread Width: 175 mm
    Profile Height: 55 % (175*0.55=96.25 mm)
    Wheel Diameter: R 14 inches
    Overall Tyre Diameter: 548 mm
     
    • Like Like x 1
  5. Kennett Ylitalo

    Kennett Ylitalo

    Messages:
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    That looks great
     
    • Like Like x 1
  6. sti228

    sti228

    Messages:
    348
    Ratings:
    +74
    In game look :p

    [​IMG]

    Thanks i upload it today :) Here 256x256 is my big mistake :( Texture looks very bad and next time i will try 512x512.
     
    Last edited: Apr 26, 2016
    • Like Like x 1
  7. sti228

    sti228

    Messages:
    348
    Ratings:
    +74
    New tire wall.

    [​IMG]
     
    • Like Like x 2