Page History

...

Step % | rendstep – Specifies the ray marching step of the camera rays as a percentage of the cell size. As the renderer traces rays through the Simulator, this value controls how often to read information from the grid. If this value is more than 100, some cells will start getting skipped and artifacts may appear. Usually you don't need to lower this below 90%, unless you use render curves or texture maps for the Fire or Smoke opacity or color - in these cases you might need to lower the step in order to capture the details which are smaller than a voxel, otherwise these detail details will either be skipped or will render very noisy. However, decreasing the step will make the render slower. This parameter is used when Mode is set to Volumetric, Volumetric Geometry, Volumetric Heat Haze or Isosurface. See the Step % example below.

...