This page provides information about Multi Matte objects in Chaos Vantage.
Overview
The Multi Matte render element object creates red, green, blue, and alpha selection masks based on an object's imported Object ID or Material ID. With this render element object, only three colors are possible: red, green, and blue. For comparison, Material Mask and Object Mask render elements can include a multitude of colors to represent each material or object in a scene with a different color. With Multimatte, a single R, G, B, or A channel can be used directly as a matte, eliminating the step of selecting the color in the compositing software. This ease of use makes Multi Matte a popular choice for compositors.
To represent all the objects or materials in a scene with just the available red, green, blue, and alpha channels, several Multi Matte render element objects can be created for a single rendering, each with different Material ID or Object ID settings.
A maximum of 16 Multi Matte render element objects can be created.
UI Path
Parameters
Object IDs – In this mode the specified ID is checked against the object ID of the intersected object.
Material IDs – In this mode the specified ID is checked against the material ID of the material being shaded.
R – Adds objects or materials (depending on whether the Object IDs or Material IDs mode is selected) using the specified ID to the red channel.
G – Adds objects or materials (depending on whether the Object IDs or Material IDs mode is selected) using the specified ID to the green channel.
B – Adds objects or materials (depending on whether the Object IDs or Material IDs mode is selected) using the specified ID to the blue channel.
A – Adds objects or materials (depending on whether the Object IDs or Material IDs mode is selected) using the specified ID to the alpha channel.
ID – Sets the ID for the RGBA channels. Setting this ID to 0 disables the ID check and leaves only the include/exclude list.
Include – Specifies objects to be included in the selected channel (red, green, blue, or alpha).
Exclude – Specifies objects to be excluded from the selected channel (red, green, blue, or alpha).
With children – When enabled and if objects in the Include/Exclude list have children, they are automatically included or excluded without the need to specifically pick them to the list.
Enabling the Multi Mattes checkbox in the Render Element dialog renders all visible Multi Matte render element objects available in the scene. To render a subset of the Multi Matte render element objects, disable the visibility of the objects you want to exclude from rendering. Details
