It is first of all edit the maya.rayrc file found in the Maya2013/mental ray folder

Add the lineregistry "{_MI_REG_CCMESH_PTEX}" value "on" end registry

Now to check out the render inside Maya via a simple model of Mudbox.

Open Mudbox and use one of the simple model available there;

Go (page down) to the base layer 0Setup the Ptex (Mesh>>Ptex Setup)

Rendering Ptex in Maya 2013Monday, April 30, 20125:10 PM

Ptex render Page 1

And Paint

Select the model and Send to Maya

Inside Maya notice that the file has the texture displayed in Viewport 2.0 but not in render window

Ptex render Page 2

The rendered frame is using Mental Ray

Open the HyperShade/NodeEditor/Persp View

Map the material

Create Node by clicking on the <tab> Key and type Mib_This will bring a dropdown of options sellectMib_ptex_lookup

Copy the path name of the ptex file from the file node

Ptex render Page 3

And paste the same in the Filename of mib_ptex_lookup

Connect the mib_ptex_lookup to the color input of the material (which will automatically disconnect the previous file input)

Select the Model and go to the mental ray ApproximationWindows>>rendering Editors >>Mental Ray >> Approximation Editor

Ptex render Page 4

Create Subdivision

Render using Mental Ray

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Prem Moraes