Sorry about this, I figured it's a different problem than initially stated and easily avoidable, but hopefully reproducible in case it matters at all.
This was only happening because my alHair shader was connected to the initialShadingGroup as well. In fact, any Arnold shader plugged into the initialShadingGroup and to an Ornatrix Hair system is rendering magenta.
Maya 2016 SP5/MtoA 1.2.7.2.
If it's of any use the steps to reproduce are:
1. Assign Arnold as render plugin.
2. Create Sphere and Add Ornatrix Hair To Selection.
3. Create Arnold Shader.
4. Replace lambert1 on the initialShadingGroup with the arnold shader created.
5. Assign created shader to Ornatrix hair.
6. Render.
Note: The shader needs to be replaced in the initialShadingGroup before assigning to Ornatrix hair in order to reproduce.
In any case, I've noticed another thing while using alHair shader. The randomize feature that uses Hair Strand IDs (I believe) seems to be working with other hair systems but not with Ornatrix. This can drastically change the appearance of hair. Maybe I'm missing something to get it working properly.
Steps to Reproduce the comparison:
1. Create alHair shader.
2. Under Fibre properties>Randomize, set the Dye Hue and Dye Saturation to something like 10.
3. Create Sphere and Add Hair to Selection with Ornatrix Toolbar.
4. Assign the shader created to the Ornatrix Hair.
5. Create NURBs Sphere and Create Hair under nHair Menu.
6. On the hairSystemShape attributes, under the Arnold section, check Override Hair and drag the created shader to the Hair Shader slot.
7. Render.
I have attatched an image with a comparison. The 3 hair systems have the same alHair shader.
Attached Files:
