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Rendering Nodes#

Unlike in traditional applications, final rendering in Clarisse is part of the compositing workflow. To start a render, you must display an Image Node Render in the Image View which will then evaluate it and launch the render according to the render settings. Alternatively it is possible to render in batch using an Image Node Write process that can be either rendered in Clarisse or on a renderfarm using CNode.

New to Clarisse?

It is also possible to render interactively your scene using the 3D View if its display mode is set to Previz or Progressive Rendering. Please refer to 3D View for more information.

Clarisse provides a set of nodes dedicated to rendering. There are 2 main nodes that are specific to the build assembly rendering workflow:

  • The Render Scene which defines and setup a 3D Scene.
  • The AOV Set which defines a set of Light Path Expressions and AOVs to use in a render.

Render Scene#

As its name stands for, a Render Scene defines a 3D scene and its render settings. The Render Scene is the central rendering node on which you define render resolution, camera viewpoint, render settings, visible geometries etc… all the information needed to setup your 3D scene.

The Render Scene is actually quite similar to the Layer 3d found in the layered image.

Attribute Description
Canvas
Resolution Mode When set to Use Project Preferences, the render scene uses the default resolution defined in the preferences. When set to Custom, resolution is defined by Resolution Preset. For more information please refer to Rendering in Clarisse > Render Resolution.
Resolution Preset Render the scene with the selected resolution preset. Note that it is possible to specify a custom resolution presets file using the Preferences Panel.
Resolution Define the resolution used to render the scene.
Enable Limited Region When enabled, only the part set in Limited Region is rendered.
Limited Region Define the top left corner and the size of the render region in percentage of the image canvas. Only works if Enable Limited Region is on.
Display
Display Aspect Ratio Set the pixel aspect ratio of the image when displayed in the Image View. Please note that this is only a display settings. This doesn’t modify the rendered pixel aspect ratio.
Overscan
Margin Mode Choose the mode of the overscan margin.
Margin Pixel Define the overscan in pixels: Left, Top, Right, Bottom.
Margin Ratio Define the overscan in percentage.
Rendering
Input Specify which input context is defining geometries and lights used during rendering.
Renderer Define which renderer is used to render the scene.
Camera Define the render camera.
Pixel Aspect Ratio Set the render pixel aspect ratio.
Sampling Quality Control the global sampling of the scene. This attribute is a sampling multiplier that globally increases or decreases the number of samples in the scene. This value doesn’t change the actual values of the scene, it multiplies the actual sample values on the fly during rendering.
Geometries
Visibility Override which geometries are seen by the primary (camera) rays. If nothing is specified, it uses what’s set in Input
Shadows Override which geometries are seen by the lights when performing shadow computations (shadow rays). If nothing is specified, it uses what’s set in Input
Raytracing Override which geometries are visible during raytracing computations (reflection/transmission rays). If nothing is specified, it uses what’s set in Input
Global Illumination Override which geometries are visible during global illumination computations. If nothing is specified, it uses what’s set in Input
Lighting
Lights Override the group of lights used during rendering. If nothing is specified, it uses the lights defined in Input.
Lighting Layer Specify a lighting layer (not available)
Shading
Override Material Use the specified material for all geometries during rendering.
Shading Layer Set a shading layer defining look association.
Arbitrary Output Variables Define which AOV Set is used for rendering.
Mattes
Matte Objects Define which objects are used as matte (holdouts) in the render
Matte Color Define the color of the matte objects
Matte Alpha Define the alpha value of the matte objects
Clipping Range
Near Clip Set the distance of the near clipping plane.
Far Range Set the distance of the far clipping plane.
Sub Pixel Filters
Sub Pixel Filters Specify which sub pixel filters are used during rendering.

This node status bar displays useful information in the Build View.

Status Bar Description
Red The Render Scene isn’t setup properly. Make sure you’ve connected a Renderer and a Camera to the Render Scene.

AOV Set#

The AOV Set node defines the list of AOVs and light path expressions that should be computed during rendering. The node must be connected to a Render Scene. If you are familiar with Clarisse iFX workflow, the AOV Set performs, in a procedural way, what you do with the AOV Editor.

Attribute Description
Light Path Expressions Set the list of Light Path Expressions to compute during rendering.
Arbitrary Output Variables Set the list of AOVs the renderer should compute and output.