User Guide > Rendering and Render Setup > Shading > Shading Nodes > Material nodes - Maya software > Volumetric materials >
Volume Shader
Controls the color, transparency, and matte opacity of a volumetric material, such as light fog. This shader lets you connect other attributes and effects directly to its color, transparency, and matte opacity. The Volume Shader can be used with a Spot Light, Point Light, Environment Fog, and particles.
Find this material in the Create bar.