2011

Table Of Contents
source to project an illuminated image onto a layer or the scenesee Working
with Lights
on page 268.
Shader
Shaders are programs that help define the look of objects in your scene. They
can be considered a part of the rendering pipeline.
Compositing Workflow
The Reaction tool lets you create 2D multilayer compositions and perform 3D
compositing with applied transformations and other effects.
NOTE You can also use the 2D Compositor tool to create multilayer 2D
compositions, but without integrated transformationssee
2D Compositor on
page 339.
Basic and Advanced Workflows
The following shows examples of a typical workflow you might follow when
working with Reaction to perform multilayer compositing, or to create and
integrate compelling 3D effects into your compositions.
Basic Multilayer Compositing in Reaction
1 Add a Reaction tool to your composition and set the composition
background (optional).
2 Add sources and create layers.
3 Set layer priority and modify their properties.
3D Compositing in Reaction
1 Add a Reaction tool to your composition and set the composition
background, which is optional. An empty background is set by default.
2 Add sources and create layers.
3 Modify or enhance the scene by:
Adding objects, such as lights, cameras, and material nodes, and edit
their properties.
242 | Chapter 12 Multilayer Compositing and 3D Effects