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Things to fix: - Fix the file path in the Alembic_In node to a proper relative one.
- Revise rendered look - with proper colour management, things look washed and dull.
- Re-do the multi-layers image with a layout more like the one in the 3dfm multi-light page.
- Estimate the overhead of rendering the multi-light image.
- Should implement "Environment" item in Multi-Light list in Katana.
- Should add the "Display All Lights" toggle under the Multi-Light list.
- Should add the "Visible to Camera" attribute on area lights so we can control if the light box itself is visible in the rendered image.
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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.
Rendering a multi-light image in KATANA
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The layers of a multi-light image. Rendering such an image requires about 12% more time than rendering the RGBA "beauty" layer alone.
(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).
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| DoubleIn the Node Graph, right-click on the DlSettings node to display the 3Delight rendering attributesand choose Show Parameters in Floating Pane.
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| In 3Delight Display, display the contact sheet by double-click the layers icon in the thumbnail view or by choosing View → Contact Sheet.
All rendered layers are shown. You can see one layer per entry picked in the Multi-light list, in addition to the primary RGBA layer. Pick any layer to display it in full size by clicking on it. You can also use the page up and page down keys to cycle through the layers. Select the primary RGBA layer to continue. |
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Light Mixing in 3Delight Display
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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.
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| In KATANA, double-click on the GafferThree node, which is just above the DlSettings node. In the parameters section, unfold the rig node to display all three lights in the scene. Note their current intensity values.
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