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Polka Dots with Iray

Victor_BVictor_B Posts: 392
in The Commons

Hello.

The question is: how to made editable polka dots texture with Iray? I want base color and dots color  to be changeble. Is it possible to do this with Uber Base Shader?

I can place an image with white dots on black background as texture to Metallic Flakes Weight. But in that case dots are too shiny and metallic (why? :))  So, I think that is not the best solution.

Any ideas?

Thanks.

Comments

  • fictionalbookshelffictionalbookshelf Posts: 837

    I would create just your basic solid colors first and save as a shader. Then create dot png images same size as your solid color tiles and save several pngs of the dots in various colors. Use the pngs to save as L.I.E. presets

  • AlmightyQUESTAlmightyQUEST Posts: 2,006
    I was thinking along the same lines, but to create a mask to use in LIE and change the colors there. I haven't done this much though, any benefit I'm not thinking of to have the colors in the image? I also haven't ever saved LIE presets to reuse or distribute so I am not sure of the steps for that.
  • FistyFisty Posts: 3,416
    edited December 2018

    You need to make a black and white image with the dots white and the background black, plug that into the Diffuse Overlay Weight channel, set it to 100%, then you can change the color in the Diffuse Overlay Color channel.

    (This doesn't work with Uber Surface Shader which is 3Delight, only Iray Uber which the OP is using since he mentioned Metallic Flakes Weight)

    Post edited by Fisty on
  • FistyFisty Posts: 3,416
    edited December 2018

    It should be mentioned that you can do it with L.I.E. as the others mentioned, and indeed you need to if you're rendering with 3Delight and don't have the spare 150 IQ points to mess with shader mixer.. but with Iray Uber it's much easier and less clunky to just use the diffuse overlay already built in to the shader.

    This will not show in the viewport, you'll need to render it to see the effect.  I have it tiled 4x4 to get this size dots on this shirt, size will depend on the UV mapping of the object it's applied to but 3 to 5 times repeat should be in the right ballpark for most things.

    Dots Surface.png
    437 x 1070 - 66K
    FD_Polkadot_Mask.png
    2048 x 2048 - 27K
    Zoe Dots.jpg
    1300 x 1000 - 537K
    Post edited by Fisty on
  • Oso3DOso3D Posts: 15,085

    Tooting my own horn (toot!), another option is to use Oso Blendy ( https://www.daz3d.com/oso-blendy-two-layer-shader-for-iray )

    You can create two different sets of values (color, etc) and then mask them with a single map. So you can then create a set of masks that use the same two layers, or different layers using the same masks, or whatever.

    Admittedly if you want a fairly simple surface with polka dots, the other options people have mentioned are easier.

  • AlmightyQUESTAlmightyQUEST Posts: 2,006
    Thanks for that Fisty, I always forget about the overlay option.
  • nonesuch00nonesuch00 Posts: 18,729
    Fisty said:

    It should be mentioned that you can do it with L.I.E. as the others mentioned, and indeed you need to if you're rendering with 3Delight and don't have the spare 150 IQ points to mess with shader mixer.. but with Iray Uber it's much easier and less clunky to just use the diffuse overlay already built in to the shader.

    This will not show in the viewport, you'll need to render it to see the effect.  I have it tiled 4x4 to get this size dots on this shirt, size will depend on the UV mapping of the object it's applied to but 3 to 5 times repeat should be in the right ballpark for most things.

    Sweet, so 60s & 70s. Thanks!

  • barbultbarbult Posts: 26,231
    edited December 2018

    Thank you Fisty! (You might recognize your Classic Dress from Christmases past. Here it is on Gail for G8F.)

    Santa is Cuter This Year

    Santa is Cuter This Year_002.jpg
    2000 x 1500 - 1M
    Post edited by barbult on
  • FistyFisty Posts: 3,416

    heartheartheart

  • Victor_BVictor_B Posts: 392
    edited December 2018

    Thank you all.

    Thats exactly what I need, Fisty.

    Post edited by Victor_B on
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