A RenderPass can be split into several Layers, each can render a different set of objects. During rendering of the RenderPass, all Layers are rendered at the same time.

RenderPass is split into 3 layers, Layer, Spheres and MatteSphere.

Setting which objects to render in a Layer

In the RenderGraph, connect a flow to the visible input of a Layer node. In the Render Layer attribute, dial in the name of the Layer to render into.

All objects are rendered in Layer, and spheres are also rendered in Spheres

Rendering objects as Matte (or Holdouts, Back holes)

In the RenderGraph, connect a flow to the matte input of a Layer node.

All objects are rendered in Layer and in MatteSpheres, but spheres are matted in MatteSphere

Disabling a Layer rendering

You can disable the rendering of a whole Layer by switching the checkbox in the Passes view.

The Spheres layer is disabled, but Layer and MatteSphere are still rendered.

Rendering only a set of Layers

Alternatively, you can also 'solo' one or several Layers by click the 'S' button in the Passes view.

Layer and MatteSphere are soloed, Spheres is not rendered.

When a Layer is soloed, all non soloed Layers are disabled for rendering. Moreover, non rendering Layers are displayed in light grey.

Duplicating a Layer in a RenderPass

To duplicate a Layer, simply click the button on the layer row.