2008

Procedures
To save the mental ray renderer settings:
■ When you have a set of rendering settings you want to keep, go to the
Render Scene dialog and open the Preset drop-down list at the bottom.
Choose Save Preset (at the bottom of the list), enter a file name, and click
Save. Next, use the Select Preset Categories dialog to highlight the parameter
categories to store in the preset and click Save. Thereafter you can choose
your custom setup from the Preset drop-down list.
To create a rendering from multiple passes:
1 Use the
Render Type on page 5900 > Selected option to choose only a
portion of the scene to render.
2 On the Translator Options rollout, in the Render Passes group, click the
ellipsis [...] button next to Save.
3 A Save As dialog is displayed. Use it to enter a name and location for the
PASS file.
4 Click Render.
The partial rendering is saved in the PASS file you specified.
5 Repeat steps 1 through 4 until you have generated all the passes for the
rendering (or all the passes but the last).
WARNING If your scene includes an environment, render it only in the final
pass. Rendering the environment in multiple passes is time consuming, and
can lead to artifacts such as unwanted color changes to the background.
Render all passes but the last one using a default black background.
6 In the Render Passes group, click Add to add the various pass files to the
list.
7 Turn on Merge.
At this point, you might also want to turn off Save, unless you want the
final result to be saved as a PASS file as well as a rendering.
8 Click Render.
The rendering consists of all the passes merged into one.
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