Rendering an Animation in Maya and V-Ray

Software:
Maya 2018 | V-Ray 3.6

  1. Set a Project Folder or Image output path.
  2. In Render Settings > Common under Image File Output,
    Set a file name and format.
  3. In Render Settings > Common under Animation,
    Set Animation to Standard.
  4. Set the Maya UI to Rendering and choose Render > Render Sequence,
    Or simply press the Render Button in the toolbar.

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Related post:
Denoising animations with V-Ray for Maya

Randomize textures in V-Ray for Maya

Software:
Maya 2018 | V-Ray 3.6

Connect the different texture options as inputs to a VRayMultiSubTexNode and connect it to the wanted material input.
In the VRayMultiSubTexNode attributes, set Get ID From to Random by Render ID.
* Press add new item in the VRayMultiSubTexNode attributes to add one or more inputs to the list.

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Maya V-Ray GPU texture resizing

Software:
Maya 2018 | V-Ray 3.6

By default V-Ray for Maya, when Production Engine is set to CUDA (GPU), resizes all the textures to 512×512 in order to save GPU memory.
Naturally, this may cause the textures to appear blurry and lacking detail in the rendered image.

To avoid this,
In Render Settings > V-Ray tab > Production renderer,
Set GPU Resize Textures to Full Size Textures, so the textures will not be resized at all (but consume more memory),
Or On-demand mipmapping, so the textures data will be optimized to reduce memory consumption (but not quality) in a pre-render process.

Note:
To get full size textures in IPR mode, do the same in the IPR tab

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Using VRayMtlHair3 shader with nHair in Maya

Software:
Maya 2018 | V-Ray 3.6

  1. Select the nHair object.
  2. In the Attribute Editor, in the hair system shape attributes.
    Open the Attributes menu, and choose VRay > Hair Shader.
  3. Create a VRayMtlHair3 shader.
  4. Connect the shader to the Hair Shader slot under VRay Extra Attributes in the hair system Shape Node attributes.

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Related:
V-Ray for Maya and XGen