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Avoid texture repetition of seamless texture

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  • #1

    Avoid texture repetition of seamless texture

    Hi,

    I'm facing a problem concerning repetition of tillable textures. I use some repeatable texture from Quixel Megascans Bridge and I can't find a way to avoid repetition on large plane ground. I'm heavily increasing the the repeat UV or UV size of my concerned models.
    I don't have the time to paint multiple mask who would break the repeating tiles.
    While searching on this matter I found a thread on the Autodesk/3DSmax forum where people were showing an interresting way of doing what I after.

    I will link a gif who will be very clear about this:

    https://autodesk.i.lithium.com/t5/im...e?v=1.0&px=999

    They're using some OSL code to do this and I'm not into it at all.

    Actually Arnold is able to do this in maya with their aiTriplanar node. But as you guessed I prefer not to use it because there will be some reflection/refraction on displacement and I don't see myself compositing a reflection/refraction done in vray and a displacement done in arnold. Cause it wont be accurate...

    Does anyone have an idea about this matter ? Have I missed something in vray ?

    Thanks for your answer guys!



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  • #2
    Add three file nodes with the same texture but offset/scaled slightly differently, use blendColors or VrayLayeredTex to blend the three variations using a couple of noise nodes as masks, that's the low-tech version of it.
    I don't think there's anything built-in to solve this.

    As for an OSL that does it it's probably some kind of scattering thing which is just a more advanced and convenient version of what I suggested above. I've seen some ready made OSL's for it (which I believe Vray would support just fine), but I've never tested them. You can probably track something usable down.
    https://render.otoy.com/forum/viewto...p?f=27&t=65762
    __
    https://surfaceimperfections.com/

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    • #3
      Yeah thank you !
      I've tried your first proposition and it kinda work but it's pretty anoying to setup. I've seen it elsewhere on some screenshot or forum.

      Thanks for linking that thread, very helpful. Found that OSL boy hanging around on someone post. Now I need to find a way to compile it. I'm still asking myself why that kind of tools is not already available. Texture repetition is hell of a problem for today visual standard. maybe I need to improve myself ^^

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      • #4
        Well Vlado said they are working on something. It's called stochastic texturing:

        https://corona-renderer.com/forum/in...?topic=24174.0
        A.

        ---------------------
        www.digitaltwins.be

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        • #5
          STOCHASTIC TEXTURE TILING
          Automatically remove texture tiling artifacts with the new Stochastic tiling option on the VRayUVWRandomizer.
          https://www.chaosgroup.com/vray/3ds-max/whats-new


          Is this also going to be a feature of Vray5 for Maya/Houdini? Because I can't find that node in the current beta.

          Would be nice to have!

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          • #6
            fredsnyder

            Yes i saw that the other day while checking for the Vray 5 features list.

            Haven't looked for the maya beta so i don't know. Hope it goes into maya as well

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