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#1 2012-08-02 02:56:49
Mia transparency RT shadow problem on combined object
Hi Guys,
I've an eye composed by 2 mesh combined (the inside and the outside), every layer have a different mia_material and the external one is set correctly on transparency.
When try to render using the Raytraced Shadow the pupil remain black, but when the mesh are separate everything is OK.
I really need to maintain the mesh combined, is it a bug or is possible to have transparency on combined mesh when using the RT shadow?
TNX
Last edited by indrema (2012-08-02 02:58:27)
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#2 2012-08-02 15:46:07
Re: Mia transparency RT shadow problem on combined object
If the transparency is determined by the shader, you will probably need to do this:
-create a delight geometry attributes node and assign it to your object;
-in the geo attribs node, add the "Visibility -> Transmission Rays" attribute;
- set this attribute to "Shader Opacity".
Last edited by maxime (2012-08-02 15:46:35)
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#3 2012-08-03 03:31:19
Re: Mia transparency RT shadow problem on combined object
maxime wrote:
If the transparency is determined by the shader, you will probably need to do this:
-create a delight geometry attributes node and assign it to your object;
-in the geo attribs node, add the "Visibility -> Transmission Rays" attribute;
- set this attribute to "Shader Opacity".
That's what i've already do and work well, my problem is when the geometry are combined, try to do that:
1) Create a mesh and assigned to it a mia with transparency
2) Duplicate it and scaled the second one inside the first
3) Set 3Delight geo visibility on the two solid and optimize ray trace attribute in renderpas
4) Create a directional light and activate ray traced shadow
4) Render and everything work
5) Combine the two mesh, render and the transparency is gone
Is that a bug?
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#5 2012-08-07 06:03:49
Re: Mia transparency RT shadow problem on combined object
After some additional studies I think the problem is not on the RT shadows but the completing disappear of any internal combined mesh as you can see:
If you need the file is here: http://www.corsopc.it/files/mia_transp_problem.ma
TNX
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