nDisplay Root Actor Reference

This parameter defines the resolution for the viewport. 1.0 means full resolution.

In complex and large clustered rendering setups, we recommend lowering this value to improve the Editor's frame rate during preview. Lowering the value lowers the resolution of what's displayed.

Dropdown section that shows all viewports in the nDisplay cluster. Set the Viewport screen percentage per viewport. The Viewport Screen Percentage Multiplier is combined with the per-viewport screen percentage setting to determine the resolution.

This is especially useful for viewports that are used only for lighting during in-camera VFX shoots. You will typically want to lower the resolution for the ceiling displays, unless you need high quality reflections from them in your scene.

With Viewport Overscan enabled, the Engine will render a larger frame than specified for the viewport, to achieve continuity across displays when using post-processing effects. See Overscan Support for more details on what is supported with overscan in nDisplay.

Expand the dropdown to show all viewports in the nDisplay cluster, and change overscan settings per viewport. See Viewport Overscan Settings Per Viewport below for the per-viewport options.

Content added to the arrays here will not show up on any display in the cluster, and will not appear in the inner frustum if it's enabled. Content can be added by specifying Layers, or Actors individually.

This is useful for cases when you need an Actor in your project but don't want it displayed through nDisplay. For example, if you're using an Actor for tracking during an in-camera VFX shoot and don't want it displayed but need it for compositing with Composure.

Specify the units for overscan. Options include:

• Percentage
• Pixels

When enabled, the resolution of the rendering output increases based on the settings below.

When disabled, the rendering output is scaled from the original resolution of the viewport to reach the size in the settings below.

This option is enabled by default.

Enable this option if you want to use the inner frustum with your nDisplay setup. Disabling this option overrides the inner frustum settings on the individual ICVFX cameras.

When you have multiple cameras, disabling this option disables the inner frustum for all of them.

When enabled, applies the color grading settings from the Entire Cluster section to all the nDisplay viewports and inner frustums.

The color grading is only applied to nDisplay renders. It will not change the color of the project in the Editor, or the renders from Movie Render Queue.

When enabled, applies the color grading settings from the Color Grading section to all viewports defined in Apply Color Grading to Viewports.

The color grading is not applied to inner frustums that appear on the nodes, if they're enabled. To apply color grading only to an inner frustum, see the Color Grading section of the ICVFX Camera settings.

When enabled, applies the color grading settings defined in Entire Cluster before applying the settings defined in the Color Grading section to the specific viewport.

When disabled, the color grading settings defined in Entire Cluster will not be applied to the viewport. The settings defined in Color Grading will still be applied to the viewport if Enable Viewport Color Grading is enabled.

The color grading settings can be applied to multiple viewports. Add an Array element for each viewport to which you want to apply these color grading settings.

The list of viewports shown in the dropdown is the same as the list defined in the nDisplay Config Asset.

When enabled, applies the OCIO configuration to all nDisplay viewports.

The configuration is not applied to inner frustums that appear on the nodes, if they're enabled. To apply an OCIO configuration only to an inner frustum, see the OCIO section of the ICVFX Camera Component settings.

The OpenColorIO configuration set here is only applied to nDisplay renders. It will not change the color of the project in the Editor, or the renders from Movie Render Queue.

If you already have an OCIO configuration applied to your project, this will override those settings on the nDisplay viewports.

When enabled, applies the OCIO configuration from the Viewport OCIO section to all viewports defined in Apply OCIO to Viewports.

If you already have an OCIO configuration applied to your project or all your nDisplay viewports, this will override those settings on the nDisplay viewports defined in Apply OCIO to Viewports.

The configuration is not applied to inner frustums that appear on the nodes, if they're enabled. To apply OCIO configurations only to an inner frustum, see the OCIO section of the ICVFX Camera Component settings.

The OCIO settings can be applied to multiple viewports. Add an Array element for each viewport to which you want to apply these OCIO settings.

The list of viewports shown in the dropdown is the same as the list defined in the nDisplay Config Asset.

There are two modes for how Light Cards are rendered when the inner frustum overlaps them:

• Lightcard Over Frustum: The Light Card renders on top of the inner frustum when they overlap.
• Lightcard Under Frustum: The Light Card is hidden by the inner frustum when they overlap.

When enabled, a preview of the Unreal Project appears on the nDisplay Root Actor's meshes in the Level Viewport. The Color Management options and other settings defined in the nDispay Root Actor will appear in the preview.

This option is enabled by default. We recommend disabling this option when you're not previewing in the Level Viewport and need to improve performance.

This parameter defines the Render Mode for the nDisplay cluster preview. Options include:

• Mono
• Stereo: Side By Side
• Stereo: Top Bottom

See Stereoscoping Rendering in nDisplay for more details on the options.

This parameter defines how many viewports are rendered per frame for the preview in the Editor. If this parameter is set to less than the number of viewports in the cluster, then the number of preview viewports specified in this parameter are updated each frame.

For example, if Viewports Per Frame is 1 and your cluster has 2 viewports (VP0, VP1), then the preview viewports are updated over multiple frames: VP0 on frame 0, VP1 on frame 1, VP0 on frame 2, and so on.

If Viewports Per Frame is set to a number greater than the number of viewports in the cluster, then all the preview viewports are updated once per frame. For larger clusters, updating every viewport in the preview can be expensive, so you can adjust this parameter to improve performance in the Editor.

These parameters define how much of the edges are feathered. You can set the Top and Bottom, and the Sides of the edges separately.

It can be useful to feather the inner frustum's edges so its hard line doesn't appear in a reflection during an in-camera VFX shot.

When the inner frustum is smaller, in terms of LED wall pixels, than the resolution you configure nDisplay to render, mipmaps can be generated to create a nicer small inner frustum. Generating mipmaps for the inner frustum might affect performance slightly.

To use mipmapping on your inner frustum, enable Auto Generate Mips. You can choose which mips sampler filter to use:

• Nearest
• Bi-linear
• Tri-linear
• Default (from Texture Group)

Auto Generate Mips and the Tri-linear sampler filter are selected by default for the ICVFX camera.

This parameter displays the resolution that is being sent to the output, which may or may not be scaled. When you change the overscan settings below, this resolution reflects the changes.

For example, if the render target resolution is 3840 x 2160, and Overscan Multiplier is set to 2, then Estimated Overscan Resolution will be 7680 x 4320.

When enabled, the resolution of the render target changes based on the overscan settings below.

When disabled, the rendering output is scaled from the original resolution of the viewport to reach the size in the settings below.

This option is disabled by default.

Specify the units for overscan. Options include:

• Percentage
• Pixels

Specify the motion blur mode for the inner frustum and how it corrects for the motion of the camera. Blur due to camera motion will be incorrectly doubled in the physically exposed image if there is already camera blur applied to the inner frustum.

There are three modes:

• ICVFX Camera Blur Off: Subtracts blur due to motion of the ICVFX camera relative to the nDisplay root, but preserves blur from both object motion and movement of the nDisplay root, which can be animated to represent vehicular motion through an environment.
• ICVFX Camera Blur On: Allows blur from camera motion. This option should not normally be used for camera shooting, but may be useful for diagnostic purposes.
• All Camera Blur Off: Subtracts blur due to all global motion of the ICVFX camera, but preserves blur from object motion.

ICVFX Camera Blur Off is selected by default.

Motion Blur Settings Override

This parameter defines the minimum projected screen radius for a primitive to be drawn in the velocity pass. This parameter is specified in terms of screen width percentage. The smaller the number, the more draw calls there are.

The default value is 4%.

When enabled, applies the color grading settings from the Color Grading section to the inner frustum.

The color grading is only applied to nDisplay renders.

When enabled, applies the color grading settings from the Color Grading section to the inner frustum when it appears on the cluster nodes defined in Apply Color Grading to Nodes.

The finest granularity of control for the inner frustum in the nDisplay cluster is per-node. This is because the inner frustum can be shared across multiple viewports when mGPU is enabled.

The color grading is only applied to nDisplay renders.

The color grading settings can be applied to multiple cluster nodes. Add an Array element for each cluster node to which you want to apply these color grading settings.

The list of cluster nodes shown in the dropdown is the same as the list defined in the nDisplay Config Asset.

When enabled, applies the OCIO configuration from the All Nodes Color Configuration section to the inner frustum.

If you already have an OCIO configuration applied to your project, this will override those settings for the inner frustum.

The OCIO configuration is only applied to nDisplay renders.

The OCIO settings can be applied to multiple cluster nodes. Add an Array element for each cluster node to which you want to apply these OCIO settings.

The list of cluster nodes shown in the dropdown is the same as the list defined in the nDisplay Config Asset.

The finest granularity of control for the inner frustum in the nDisplay cluster is per-node. This is because the inner frustum can be shared across multiple viewports when mGPU is enabled.

When enabled, applies the OCIO configuration from the Inner Frustum OCIO section to the inner frustum when it appears on the cluster nodes defined in Apply OCIO to Nodes.

If you already have an OCIO configuration applied to your project or to the inner frustum for all cluster cluster nodes, this will override those settings for the inner frustum when it appears on the cluster nodes defined in Apply OCIO to Nodes.

The OCIO configuration is only applied to nDisplay renders.

The OCIO configuration can be applied to multiple cluster nodes. Add an Array element for each cluster node to which you want to apply these settings.

The list of cluster nodes shown in the dropdown is the same as the list defined in the nDisplay Config Asset.

When enabled, turns the entire inner frustum the solid color set in Chromakey Color and applies Chromakey Markers if they're enabled.

This setting is typically used to apply a green screen and tracking markers to the display during an in-camera VFX shoot. Since only the inner frustum changes, the outer frustum can continue to be used for reflections while filming.

Chromakey Markers

Custom Chromakey

When enabled, only turns the content defined in Custom Chromakey to the Chromakey Color and applies Chromakey Markers when the content appears in the inner frustum. The content is hidden in the outer frustum and will only appear in the inner frustum.

This setting is for green screen halo.

You can choose to apply a blur to the content defined in Custom Chromakey Content.

There are three modes you can set Post Process Blur to:

• None
• Gaussian
• Dilate

For Gaussian and Dilate, you can set the Kernel Radius and Scale to change the look of the effect.

When enabled, replaces the inner frustum view with the texture defined in Source Texture. The texture moves with the camera.

The replacement won't be visible if the entire inner frustum is used for chroma keying.

Texture Crop