The Fix Viewport tool easily corrects and makes Maya’s viewport beautiful.

Optionally build a light rig for the viewport with soft shadows and HDRI skydomes for realtime reflections.

Color calibrate Arnold and Standard Surface shaders in the viewport while modeling. Options for calibrating to Lambert/Blinn shaders or Arnold/Surface Standard settings.

Manage confusing ACES and Linear color space in Maya 2022 and above.

Grade the viewport with view space presets and exposure/contrast sliders.

Tweak viewport 2.0 settings including advances settings such as Max Light Limit, Anti-Alias Samples and UDIM Texture tile display.

Set preset clipping planes to avoid shimmering intersections on models.

Use our presets to instantly fix the viewport with all of the above settings!




About Surface Standard (2020 And Above)
The Standard Surface shaders are new in Maya 2020+ are the new default shaders and should replace lamberts/phongs/blinns.

The Standard Surface shaders are native to Maya (generic) and they do not need Arnold to be loaded.

Unfortunately the Standard Surface shaders display too dark in the viewport. Fix Viewport fixes this issue by creating lights that are 1.7 times brighter than Maya’s default viewport light.

You can also calibrate back to lamberts/phongs/blinns too (see below).

The StandardSurface shaders now match while rendering which is great.

Using Lamberts/Blinns/Phongs
In 2020 and above if you are using lambert/blinns or phongs set the HUD Light Rig to:

Fix Viewport > Advanced Mode > Camera viewport > Intensity (drop down) > Intensity Lambert/Blinn

In Maya versions 2017-2019 the default will be as per lamberts/blinns/phongs, so this setting is not required.




Maya 2022 now defaults to the new ACES Color Space. This introduces a number of problems including a lack of support in After Effects and other programs, also wireframe anti-aliasing issues and weight-paint color problems.

Imported scenes from versions prior to 2022 will now have an incorrect colors; this includes our Model/Assets browser assets.

At this time we are still recommending Linear Color Space which is also the default in 2017-2022. Other applications such as After Effects and Photoshop do not support ACES workflow at this stage, though that will change in the future.

In short, ACES is going to be great, just not quite yet for most people!

The Fix – Switch To Linear
To return to Linear Color Space and fix color issues with imported files and our Model/Assets:

– Press the Linear (sRGB) button
– Press the No Tone-Map button

Also set these settings for all new scenes.

These settings will also fix wireframe anti-alias issues, and map-painting issues such as skin-weights painting.

Switch Back To ACES
To return to Maya 2022 defaults color space

– Press the ACES (sRGB) button
– Press the SDR-Video button

Note that even in ACES wireframe and weight painting can be solved by clicking the:
No Tone-Map button




Viewport Renderer Support
Fix Viewport requires Arnold to be loaded though you do not need to be rendering in Arnold. HDR Skydomes in the viewport are only supported by using Arnold skydomes, though we hope that will change in the future.

Most shaders types of all renderers are supported, see below.

Shader Support
Most shaders (all renderers) are supported though we recommend Maya’s generic standardSurface shader (2020 and above) or Arnold’s aiStandardSurface (2017 and above).

Other shaders such as blinn/phong/lamberts work too but the specular/reflective properties of these shaders are not as good as standardSurface and aiStandardSurface.

Maya 2020 Circle Hole Issue
Maya 2020 can show with a big circle hole in the middle of the screen. To fix, refresh the viewport by running the following code twice or more. This code will be added in Zoo 2.5.5. In Zoo 2.5.5 you will also be able to hit the new refresh button (planned) and that will run this code too.


This issue due to an Autodesk bug and is not related to Zoo Tools Pro. You can also upgrade to 2022 where this issue is solved.

Maya 2020 Chrome Ball HUD Hidden
In Maya 2020 the chrome ball may be hidden, this is a known Autodesk bug and has been fixed in Maya 2022 and above.

To fix you can also wiggle the HDRI control or the code:


Unfortunately moving the viewport will hide the chrome ball again.

Rendering With The Setup
This light setup does not currently render in any renderer, Arnold or other renderers; this is because we are using Maya’s native directional lights. We plan to add a renderer switch so the light rig will work with all of our supported renderers soon.

I Can’t See The HUD Light Setup
To see the HUD controls you must have polygons, and NURBS Curves displayed in the show menu.

Viewport Menu > Show > Polygons and NURBS Curves (on)

The HUD currently works with a 35 mm focal length on the camera.

If you’re zoomed in with a long lens, use the \ hotkey (hold and right-click zoom drag) until you see the HUD control and move it into frame then tap \ again to return to the correct lens zoom. We will solve this issue in a later version.

To hide the HUD Light display use Maya’s Layers under the Channel Box and turn off the visibility (v) of the layers named vpLight_geo_lyr and vpLight_ctrls_lyr.

Hide HDRI Light Viewport
To hide the HDRI and directional lights in the viewport, turn off lights in the viewport display menu.

Viewport Menu > Show > Lights (on or off)

Switch The Light rig To Another Camera
Press Create/Reparent Light Button and any existing setup will reparent and constrain to the active viewport camera.

– Change your viewport camera to a new camera, make sure the viewport is active (grey line around it)
– Press the Create/Reparent Light Button in the Fix Viewport tool




Viewport Light Presets Combo Dropdown
Builds a light rig for the viewport and sets viewport settings.
Builds/updates automatically while changing the dropdown options.

None: Does nothing

Viewport Off: Removes light rigs and turns all viewport settings off.

Low Model: Modeling mode. Single directional light that matches Standard Surface shaders.

Low Shadows: Shadows are on with Low Model (above) settings.

Medium Sharp 4k: Single directional light 4k shadows and HDRI Skydome. Viewport settings medium.

Medium Soft 1k: Seven directional lights with a single 1k soft shadow with specular and HDRI light.

High Sharp 8k: Single directional light with 8k shadows and HDRI Skydome. Viewport settings high.

High Soft 2k: Fifteen directional lights with a single 2k soft shadow each with specular and HDRI Skydome.

Clip Planes Combo Dropdown
Set the near and far clipping planes on the active viewport’s camera.
Recommended to Medium in most cases, regular scene size.
Reduces viewport flicker of objects/surfaces close together.

Exposure Slider
Set Maya’s Exposure viewport setting to have brighter/darker exposure.
Default is 0.0.

Contrast Slider
Faked contrast using the both the viewport’s Exposure and Gamma settings.
Default is 0.0.

Linear (sRGB) Button (2022)
Sets the viewport to be Linear Color Space.
Matches 2020 and below versions of Maya and matches all Zoo Tools assets.
Assumes a sRGB monitor.

Aces (sRGB) Button (2022)
Sets the viewport to be ACES Color Space.
Newer color space and default in 2022 and above.
May not match some compositing programs like After Effects.
Assumes a sRGB monitor.

No Tone-Map Button (2022)
Removes the tone-map, so no color grade is applied.
Matches 2020 and below, also fixes wireframe aliasing in 2022.

Unity Neutral Button (2022)
Use the SDR-Video view transform (Grade/Tone-Map)
Default for 2022, also distorts wireframe aliasing.

SDR-Video Button (2022)
Use the Unity Neutral view transform (Grade/Tone-Map)
Also distorts wireframe aliasing.

Directional Slider
Adjust the intensity of the directional light in the viewport light rig.

All lights will combine to equal this setting.

Intensity is automatically multiplied by 1.7 if set to Standard Surface.

Auto-updates existing setups while changing.

HDRI Arnold Slider
Adjust the intensity of the HDRI Skydome.

This light must be an Arnold Skydome to affect the viewport.

Auto-updates existing setups.

Cursor Icon Button
Selects the master light control of the light rig in the scene.

Directional Light Icon Button
Selects the directional light control of the light rig in the scene.

HDRI Skydome Button
Selects the hdri skydome light control of the light rig in the scene.

Create/Reparent Light Button
Creates or recreates a viewport light rig with soft shadows, specular and HDRI Skydome controls.

Maya 2020+: Adjusts to compensate for darker Arnold and surfaceStandard shaders.

With a light rig already in the scene, click to switch rigs to a new camera.

Link/Unlink Icon Button
Breaks or links the rotation of the viewport light from the camera.

Broken: The light rig will not rotate with the camera viewport.
Linked: The light rig will rotate with the camera viewport.

Delete Trash Icon Button
Deletes the viewport light rig setup, including controls and chrome ball.




Certain viewport light setups can slow down Maya’s playback speed (frames per second).

For fast playback we recommend adjusting the following settings for a fast viewport.

Fix Viewport > Advanced Mode > Viewport 2.0 Settings > Anti-Alias > 8
Fix Viewport > Advanced Mode > Viewport 2.0 Settings > Max Lights > 8
Fix Viewport > Advanced Mode > Camera Viewport > Light Count > 7 or below




Create Light Automatically Checkbox
With preset changes if checked then create the viewport light rig and constrains it to the current camera.

Grid Checkbox
Display the viewport grid on/off.

Textures Checkbox
Toggles viewport textures on/off.

Show UDIM Textures Button
Show UDIM (multi-tile) texture in the viewport, default is off.

Background Color Swatch and Slider
Change the background color of the viewport.

Reset with the alt b hotkey to cycle through default colors.

Lights Checkbox
Toggle viewport lights, lights on/off in the scene.

Shadows Checkbox
Toggle depth map shadows on/off in the scene.

Screen AO Checkbox
Toggle ambient occlusion on/off in the viewport.

Anti-Alias Checkbox
Toggle anti-aliasing on/off in the viewport.

Anti-Alias Samples Combo Dropdown
Set the anti-alias samples to 8 (low) or 16 (high) samples.

Max Lights Combo Dropdown
Set the maximum viewport lights to be 8 or 16.

Maya does not include skydome lights in this count.

Extra lights above the limit won’t affect the viewport.

Renderer Combo Dropdown
Currently only supports viewport lights, renderer support is coming soon.

StandardSurface/Lambert Blinn Combo Dropdown
Multiplies the viewport light rig intensity to match:

Standard Surface shaders (1.7)
Lambert/Blinn/Phong shaders (1.0)

Specular Slider
The intensity of the specular contribution to the viewport light.
This setting is multiplied (overblown) to better match rendered settings.
Auto-updates existing setups in the scene.

Light Count
Set the number of directional lights in the viewport light rig for soft shadows.

More lights will create more accurate softness but may slow the scene and consume texture memory.

Auto-updates existing setups. The Max light count is 15.

Soft Angle
Adjusts the softness of shadows on setups with more than one light.
Auto-updates existing setups in the scene.

DMap Res
Adjusts the depth map shadow (pixel resolution) setting for directional lights.

Shadow resolution is calculated based on the entire scene from the angle of each light.

Sharp shadows are created with larger sizes, will depend on scene scale.

Softer shadows are created with smaller sizes but may also introduce pixelation.

Auto-updates existing setups in the scene.

Shadow Color Swatch and Slider
Set the shadow color of the directional light.

Auto-updates existing setups in the scene.

Camera Textbox and Arrow Icon Button
The name of the camera that the light will be constrained to.

Leave empty to set to the active camera.

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