9.5.2

716 • CHAPTER 13
RENDERING • RENDER SETTINGS • 717
Object Buffer
This creates a mask layer for objects that use a specied ID number in their Compositing tags. After
choosing this command, the Object Buffer dialog open. Enter the desired ID number and click OK.
To assign an ID to an object, use a Compositing tag.
The sphere appears in both object buffers since its Compositing tag has two IDs (ID=1 and
ID=2).
The layers
RGBA Image. Shadow. Depth.
Reection.
Refraction.
Specular.
The lower part of the Channels drop-down list shows the layers that you can add to the multi-pass
rendering, a selection of which is illustrated above. These are RGBA Image, Ambient, Diffuse, Specular,
Shadow, Reection, Refraction, Global illumination, Caustics, Atmosphere, Atmosphere Multiply,
Illumination and Depth (the remaining layers in the list — i.e. those whose names begin with ‘Material’,
are of use to plugin developers only).