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Re: Adding a texture to a shader so the alpha works with renderman RIS

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On Friday, December 5, 2014 2:25:46 AM UTC+3, Richard Gillies wrote:
> Hi, I'm really new at renderman, and I can't for the life of me figure out how you're supposed to get a alpha texture on a renderman RIS shader. This is for Renderman 19 in maya 2015.
> 
> Example: Tree leaves. I'm using geo planes in maya, then adding textures to those planes of the leaves with an alpha channel. Rendering with Renderman gives me black where the alpha is.
> 
> Does anyone know how to use alphas in the new Renderman 19.
> 
> Thank you very much for your time.
> 
> Cheers.
> 
> Richard

I think most RIS base materials should have appropriate parameters for opacity.
For example tooltip on PxrDisney.presence attribute says you should connect your mask to it. I don't think any of them support coloured opacity, it does not
play nice with 'plausible' shading.

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Adding a texture to a shader so the alpha works with renderman RIS richardjgillies@gmail.com - 2014-12-04 15:25 -0800
  Re: Adding a texture to a shader so the alpha works with renderman RIS "L. Onokhov" <sopvop@gmail.com> - 2014-12-05 00:48 -0800
    Re: Adding a texture to a shader so the alpha works with renderman RIS Richard Gillies <richardjgillies@gmail.com> - 2014-12-05 10:53 -0800
  Re: Adding a texture to a shader so the alpha works with renderman RIS Bo Schwarzstein <Bo.Schwarzstein@gmail.com> - 2014-12-05 02:34 -0800

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