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Can't get set up passes with mental ray and IBL in Maya 2016

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Anonymous
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Can't get set up passes with mental ray and IBL in Maya 2016

Hi everyone, I'm new to these forums and also pretty new to Maya, but what I've been using it for is compositing in a pipeline with Nuke for my visual effects classes as I'm a student majoring in VFX at a college. I've only been using the software for a few months but have learnt a lot lately. However, when it comes to separating what I want into different passes (i.e. Diffuse, Specular, Ambient Occlusion, Shadow, Alpha, Reflection, Depth) I can't seem to figure out what things to turn off and what to turn on.

I'm currently using Maya 2016.

I have a robot model that I purchased off of turbosquid that I'm using for my class project, I've tracked footage, imported the alembic file into my scene along with the model. I also referenced geometry of various objects in my shot with Nuke's model building node (not sure of the exact name) where you can use primitives to lay out where things are in reference to one another in footage you've shot. In my scene I've right clicked on my light, my IBL, and my object and made a new layer. I've attempted using the presets for diffuse to only display the color, no shadows, no reflections, and no specular, of the model, but every time I render, those still show up. I've upgraded the mia_material_x that the model has to the mia_material_x_passes material with the little function in the hypershade when you click on the shader and look at its attributes, but I'm not getting the Passes tab in the Render Settings since I tried to go the multi-pass route. In a previous version, Maya 2014, I was able to use render passes and easily export out exr sequences of what I wanted for compositing. I cannot seem to do that in 2016. Also, on the render layer I've created, I've even right clicked on the layer, add new render pass, and selected diffuse without shadow, but I'm still getting shadows on the object. I've used layer overrides to turn off primary visibility for the ibl in render stats and the only thing I can do with that is keep the dome from showing, I have no idea how to shut off reflections for rendering out a diffuse pass.

I was able to get the shadow and matte of the alpha of the object, but I cannot seem to figure out how to set up passes for AO, Spec, Reflection, and Depth. I'm completely at a loss and so confused. I've tried emailing my profs but nothing. Any suggestions?

And if it helps, although I'm not sure if it does or not, I'm using Windows 10 64 bit so things are located in different areas than on the mac version. In the past I've used other 3d applications for this, but for some reason, Maya is giving render woes, probably because I'm totally new to it in some ways.

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