question

Nataliya Tsygankova avatar image
Nataliya Tsygankova asked ·

arnold transparent logo

I am trying to put logo on the basketball, and created set selection area for it, but it doesn't work properly. Following youtube instruction doesn't work.

https://drive.google.com/open?id=18kMs-DR6JzDFu3aZOSdADNzK5f655Out

c4d file with textures is linked

texture
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Peter Horvath avatar image
Peter Horvath answered ·

I've found two problems:

  • The plugin does not handle stacking with multiple UVW tags properly. To fix this, I renamed the second UVW tag to 'UVW2' and changed the Bitmap shaders to image shaders, where the custom UV set can be defined (UV coordinates tab). Hope I can fix this in the plugin, so this manual workaround won't be necessary.
  • For some reason the common area of the 'orange' and 'logo' polygon selections are not recognized. Maybe it's an issue with the mesh or the selections, I'm not sure. What I did is to add the orange material to the entire mesh as well, as the base layer.
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I did the same, but it still doesn't work.. https://drive.google.com/drive/folders/1KjPvryrq9od5mDP0eWTXmT2FVH7Y1y_i?usp=sharing but sounds reasonable)

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Ahh, sorry, I forgot to send you the scene with the modifications. Here it is:

basketball_good_v02.zip

The key is to specify the UV set in the image shaders, like this:

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uvset.png (34.8 KiB)

thank you for your help!

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I am having same problem again with another object. Maybe you can take a look why the alpha doesn't work? I tried changing UVW set and assign alpha as shader and texture. https://drive.google.com/drive/folders/1ONTKw2xRZsmK2VH5gZAOYDTk4Ru8pDjp?usp=sharing

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Peter Horvath avatar image Peter Horvath Nataliya Tsygankova ·

I attached a modified scene. You have two options:

  • Alpha stacking (see Plane): add a base material with no alpha and your butterfly material with the alpha texture in the Alpha channel.
  • Mix shader (see Plane.1): add a mix shader with the base butterfly layers driven by the alpha texture.

Hope this helps.

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butterfly-v02.zip (882.9 KiB)
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Lee Griggs avatar image
Lee Griggs answered ·

You can quite easily achieve this effect using Arnold's layer shaders or mix between two standard_surface shaders.

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i know, but it doesn't work in this case.

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Lee Griggs avatar image Lee Griggs Nataliya Tsygankova ·

Why don't they work?

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