This page provides some extra tips on rendering a V-Ray Volumetric Grid.
Manually equalizing the render settings with FumeFX
Certain FumeFX settings can be optimized to keep render times as low as possible:
- Make sure the Step % value matches the corresponding FumeFX step parameter. A smaller Step % value will lead to longer render times.
- In the Fire rollout, select Fuel as the channel the fire color is based on, as this is FumeFX's Fire channel after importing the .f3d file. For Fire Opacity Mode, choose the Use Own Opacity option and carefully duplicate the fire color and fire opacity diagrams from FumeFX.
- Please note that VRayVolumeGrid does not support the Fluid Mapping option in FumeFX.
- VRayVolumeGrid has the option to illuminate the other objects in the scene automatically by using emissive lights. This increases render times. To turn it off and keep only the illumination on the volumetric itself, set the Light Power on Scene value to 0.0 and set Self-shadowing to Grid-based. You can also speed up the calculations of self-illumination by reducing the Light Grid Resolution (%) value.