Using 3Delight Display's Mixer to interactively adjust light intensities; the modifications are instantly shown in the rendered image and applied in the scene by KATANA.
This tutorial illustrates how to render multiple light layers at once using 3Delight for KATANA, and how this kind of rendering can be used in 3Delight Display to interactively adjust the scene light intensities. In this context, the modifications are instantly shown in the rendered image and are applied in the scene by KATANA. The scene is available as a small package file here.
(fixme: first step is to adjust the path of the abc file by double-clicking on the Alembic_In node at the top of the Node Graph. In the Parameters section, click the down arrow next to the abcAsset textfield; pick Browse and select the mv.abc file that is next to the katana scene file).
In the Multi-Light section, select the light layers to be rendered.
In this sample scene, the key lights are grouped in a rig. Rigs get their own entry multi-light list; selecting one rig in that list will render a layer containing all of the rig's lights. Independent lights are listed under the Lights section.
Bring up the Mixer by choosing Edit → Mixer...
The Mixer displays a list of lights that matches the selected entries in the Multi-LIght list of the rendering attributes.
- Clicking on the solo gadget of a given light or rig will change the rendered image to show only that light's contribution to the rendering. At most one Mixer item can set as solo.
- Clicking the check box gadget will toggle that light or light rig contribution to the rendered image on or off.
- The Luminosity slider acts as an exposure on the light or light rig contribution to the rendered image.
- The colour picker acts as a multiplier to the light source or light rig colour.