This page provides general information about the Volumetric sub-section of the Rendering rollout of Chaos Phoenix.

Overview

The Volumetric tab contains volumetric output settings and a parameter controlling the Heat Haze effect when the Render Mode is set to Volumetric Heat Haze.

UI Path: ||Select PhoenixFDSim|| > Attribute Editor > Rendering rollout > Volumetric rollout


Parameters

Heat Haze | rendHeatHaze – Traces the ray changing direction according to the gradient of the Surface channel. A value of 1 corresponds approximately to the normal heat haze in the air caused by the temperature. If smoke or another channel is selected as the source, a larger value might be necessary to achieve a visible result. A value of 0 produces no heat haze. This parameter is available only when Mode is set to Volumetric Heat Haze. See the Heat Haze example below.


Example: Heat Haze

Heat haze adds refraction at each ray-marching step through the volume. This only affects the camera's view. Heat haze will not affect shadows cast through a volume.



Heat haze: 0


Heat haze: 1



Render Elements

Volumetric Material ID | materialID – Material ID color for the MateralID Render Element  when rendering in any of the Volumetric Render Modes. When rendering in Isosurface or Mesh Render Mode, this will be taken from the assigned material.

Volumetric ZDepth | volZDepth – Used to generate a z-depth render element in Volumetric Render Mode.

Disable – Disables generating the render element.
Standard Element - The z-depth of the Phoenix volumes will be written to the V-Ray zDepth render element.
Phoenix Element - The z-depth of the Phoenix volumes will be written to a new Phoenix "zDepth" render element.

Volumetric Normals | volNormals – Used to generate a render element with volumetric normals in Volumetric Render Mode. Since V-Ray does not allow volumetrics to write into the normals RE, the result will be written to a separate RE.

Disable – Disables generating the render element.
Phoenix Element – The volumetric normals of the Phoenix volumes will be written to a new "PhoenixFD_normals" render element.