The Color Vertex Attribute texture works with the Maya® Paint Vertex Color tool. This texture allows vertex paint data to display on native Octane materials.
Figure 1: Accessing the Paint Vertex Color Tool from the Mesh Display menu
After painting on a Polygon object's surface with the Paint Vertex Color tool, the corresponding name of the color set works with Octane materials to determine diffuse characteristics.
Figure 2: Accessing the vertex paint map from the Color Set Editor
Add the color set name to the Color Attr.1 Colorset parameter, which you can find in the Polygon object's Shape Node that's located under Octane > Vertex Attributes > Color Attributes.
Figure 3: Adding the color set name to the Octane attributes in an object's Shape node
Next, add the Color Vertex Attribute node to an Octane material's DiffuseAmount of diffusion, or the reflection of light photons at different angles from an uneven or granular surface. Used for dull, non-reflecting materials or mesh emitters. attribute (Figure 4), and Octane adds the corresponding color set name to the Color Vertex Attribute node's Name parameter (Figure 5).
Figure 4: Adding the Color Vertex Attribute texture node to an Octane Diffuse materialUsed for dull, non-reflecting materials or mesh emitters.
Figure 5: Adding the color set name to the Color Vertex Attribute texture node's Name attribute
Figure 6: The corresponding render in the IPRProvides artists a quick preview of the image prior to the final render, and efficiently allows for adjusting some elements in the scene such as lights, shaders and textures interactively. An IPR image contains shading and lighting data including some for visibility, in addition to the software render. window