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# Release Notes for Nuke and Hiero 12.0v4

# Release Date

22 January 2020

# Qualified Operating Systems

• macOS High Sierra (10.13) or macOS Mojave (10.14)

• Windows 7 or Windows 10 (64-bit)

• CentOS 7.4 (64-bit), or later

Note: The VFX Platform 2019 upgrade includes library versions that are only compatible with CentOS 7.4, or later. Nuke 12 is qualified on the Centos 7.4, 7.5, and 7.6 distributions.

Other operating systems may work, but have not been fully tested.

## Requirements for Nuke's GPU Acceleration

If you want to enable Nuke to calculate certain nodes using the GPU, there are some additional requirements.

#### NVIDIA

An NVIDIA GPU with compute capability 3.0 (Kepler) or above. A list of the compute capabilities of NVIDIA GPUs is available at https://developer.nvidia.com/cuda-gpus

Note: The compute capability is a property of the GPU hardware and can't be altered by a software update.

With graphics drivers capable of running CUDA 10.1 or above. On Windows and Linux, CUDA graphics drivers are bundled with the regular drivers for your NVIDIA GPU. Driver versions 418.96 (Windows) and 418.39 (Linux), or above are required. See https://www.nvidia.com/Download/Find.aspx for more information.

Note: We recommend using the latest graphics drivers, where possible, regardless of operating system.

#### AMD

Note: Bit-wise equality between GPU and CPU holds in most cases, but for some operations there are limitations to the accuracy possible with this configuration.

• On Windows and Linux, an AMD GPU from the following list:

Note: Other AMD GPUs may work, but have not been fully tested.

• Radeon™ RX 480

• Radeon™ Pro WX 7100

• Radeon™ Pro WX 9100

• Radeon™ Pro SSG

• Radeon™ Pro WX 8200

Note: For information on the recommended driver for each GPU, see https://www.amd.com/en/support

• On Mac, AMD GPUs are supported on any late 2013 Mac Pro, mid 2015 MacBook Pros onward, and late 2017 iMac Pros.

Warning: Although AMD GPUs are enabled on other Mac models, they are not officially supported and used at your own risk.

#### Multi-GPU Processing

Nuke's GPU support includes an Enable multi-GPU support option. When enabled in the preferences, GPU processing is shared between the available GPUs for extra processing speed.

Note: Multi-GPU processing is only available for identical GPUs in the same machine. For example, two NVIDIA GeForce GTX 1080s or two AMD Radeon™ Pro WX 9100s.

# New Features

There are no new features in this release.

# Feature Enhancements

There are no feature enhancements in this release.

# Bug Fixes

• ID 149839 - Scopes: Resizing a scope occasionally caused the waveform to disappear.

• ID 374029 - TimeOffset: Deleting two TimeOffset nodes connected in series caused Nuke to crash.

• ID 390816 - LiveGroups: Reloading a LiveGroup containing a cloned node displayed an error.

• ID 392942 - macOS only: The out of range warnings were always active in Nuke's scopes.

• ID 394531 - Exposure: The documentation was missing information about the Adjust In dropdown.

• ID 398210 - ParticleBounce: Connecting the geometry input stopped bounce affecting all particles.

• ID 404490 - OCIO: A conflict between nuke-default and OCIO defaults assigned colorspaces incorrectly.

• ID 409888 - macOS only: Enabling monitor output during playback occasionally caused Nuke Studio to become unresponsive.

• ID 410240 - macOS only: Scrubbing the timeline with the Curve Editor docked below the sequence did not update the playhead correctly.

• ID 410552 - Soft Effects: Editing an effect that was open in another sequence did not update the Viewer correctly.

• ID 411424 - Monitor Output: Audio only clips did not update the playhead during playback with monitor output enabled.

• ID 411719 - macOS only: Changing %04d notation to an invalid file path caused Nuke to crash.

• ID 413971 - Node Graph: The bottom-right zoom window displayed outside its bounds when errors were displayed on certain nodes.

• ID 414087 - Deep: Connecting a DeepExpression node to a DeepMerge node occasionally caused Nuke to crash.

• ID 414089 - DeepMerge: Deep samples that intersect and have an alpha equal to 1 produced artifacts in the Viewer.

• ID 414494 - Linux only: Creating another CaraVR node after a C_Blender node caused Nuke to crash.

• ID 414608 - Nuke Non-Commercial: Creating OFX nodes, such as Furnace plug-ins and Keylight, displayed an error.

• ID 414826 - Windows only: Rendering frames from the command prompt did not work as expected.

• ID 414827 - QuickTime: The mov32 encoder wrote PhotoJPEG .mov files incorrectly.

• ID 415007 - Windows only: Adding a C_Stitcher to a script caused the interface to update more slowly.

• ID 415221 - Creating new sequences in Nuke Studio did not always increment the sequence number correctly.

• ID 416382 - macOS only: The Nuke executable could not be attached to Xcode debugger with SIP enabled.

• ID 416581 - Using \\ (backslashes) in UNC paths in the NUKE_PATH environment variable prevented icons loading for menus and menu items.

• ID 417069 - LUTs: ProRes .mov files exported from Nuke Studio displayed an error in Nuke Read nodes.

• ID 418044 - macOS only: The /Contents/Framework/Python.framework/Version/2.7/include directory was missing.

• ID 418933 - Node Graph: Setting the size of the Node Graph map to 0,0 caused the interface to flicker.

• ID 418939 - Navigating to Help > Hiero Plug-ins displayed an error.

• ID 419838 - Documentation: The /D option in the Windows installer did not work if the path included quotes as specified in the online help.

• ID 420680 - macOS only: The monitor output of Blackmagic cards used incorrect colors when the pixel format was set to 8 bit 4:4:4 output.

# New Known Issues Specific to Nuke 12.0

This section covers new known issues and gives workarounds for them, where appropriate.

Note: NVIDIA GPUs with compute capability of 3.0 (Kepler) cannot process .r3d files due to a known issue in the R3D SDK preventing decoding and debayering. Nuke defaults to CPU processing when reading .r3d files with these cards installed. A list of the compute capabilities of NVIDIA GPUs is available at: www.nvidia.co.uk/object/cuda_gpus_uk.html

• ID 421491 - Timeline Editing: Playback of certain .mxf shots with multiple cut edits occasionally displays an error.

• ID 421318 - Timeline Editing: Disabling and enabling shots with transitions or burn-ins applied occasionally displays artifacts in the Viewer.

• ID 420676 - Python: The KnobChanged callback does not update Colorspace knobs correctly.

• ID 420675 - Linux only: The RotoPaint ripple edit outline in the Viewer does not draw correctly.

• ID 420671 - macOS only: Monitor output from AJA cards at 4K / 10-bit causes the playhead to redraw incorrectly and lag behind playback.

• ID 420354 - Workspaces: Node panels do not update correctly if the Properties panel is open on a second monitor.

• ID 420326 - Viewers: Using an OCIO config other than nuke-default with use GPU for Viewer enabled stops the Viewer clip_warning working as expected.

• ID 419842 - PlanarTracker: Tracking without a NukeX license displays an ExecuteDialog error.

• ID 419010 - Timeline Editing: Enabling and disabling track visibility is slow compared to legacy versions of Nuke Studio.

• ID 418831 - Export: Projects with multiple versions and burn-in applied cause the Export dialog to appear sluggish.

• ID 418369 - C_Blur: The transition between values using Bilinear filtering is not smooth.

• ID 418303 - macOS only: Colorspace controls in the node Properties panel are sized incorrectly.

• ID 417443 - macOS only: HieroPlayer UI scaling does not work as expected.

• ID 416614 - Linux only: Viewing .r3d files in the file browser preview panel causes one CPU thread to run at 100% utilization.

• ID 414939 - macOS only: The dock does not always display the correct icon for the Nuke product launched.

• ID 414482 - macOS only: The Nuke Studio and NukeX launch shortcuts do not work as expected.
As a workaround, launch the required application from the command line. See the Nuke Online Help for more details.

• ID 414087 - Deep: Connecting a DeepExpression node to a DeepMerge node occasionally causes Nuke to crash.

• ID 410829 - Linux only: Creating nodes Pythonically from the OS command line causes the Python interpreter to crash.

• ID 410531 - macOS only: Changing knob values on a cloned soft effect causes the Viewer to behave erratically.

• ID 410015 - Windows only: Monitor output from AJA Kona 4 cards using HDMI is split incorrectly in to four images on the monitor.

• ID 409910 - macOS only: Monitor output playback is not smooth towards the end of certain clips using AJA cards.

• ID 409909 - macOS only: Switching between monitor output devices in Nuke Studio occasionally causes the device selection dropdown to disappear.

• ID 409507 - High-DPI: The Viewer overlays for GridWarpTracker display incorrectly on 4K displays.

• ID 408079 - GridWarpTracker: Using SmartVector tracking data does not work as expected if the Viewer downrez control is set to anything other than 1:1.

• ID 404189 - Bin View: Disparity channels are not displayed consistently in clip thumbnails.

• ID 403804 - Linux only: Switching resolution on the HTC Vive HMD occasionally displays black output in the headset. As a workaround, update the Viewer by changing frame or press F5 to refresh the headset output.

• ID 403337 - High DPI: Changing the primary monitor causes the UI to update incorrectly.

• ID 403210 - High DPI: Swapping between fullscreen and regular workspaces does not retain the UI scale.

• ID 402564 - Windows only: The installer currently overwrites the default install directory without warning.

• ID 401946 - High DPI: F_WireRemoval on-screen controls are draw incorrectly.

• ID 401168 - High DPI: The DeepCrop Viewer widget is thinner than in older versions of Nuke.

• ID 400816 - High DPI: Preview of frame in Viewer when moving cuts not scaled correctly or in correct position.

• ID 400599 - High DPI: Double line around integer knobs in the Preferences.

• ID 400579 - High DPI: Double line highlight around file browser path knobs.

• ID 400543 - High DPI: The Wipe controls in Nuke Studio are smaller and thinner than in older versions of Nuke.

• ID 400508 - High DPI: The Wipe bounding box outline is thinner and smaller than in older versions of Nuke.

• ID 400506 - High DPI: F_Align's bounding box outline is thinner and smaller than in older versions of Nuke.

• ID 400504 - High DPI: The AdjustBBox Viewer overlays are smaller and thinner than in older versions of Nuke.

• ID 400476 - High DPI: C_Tracker's points are thinner than in older versions of Nuke.

• ID 400465 - High DPI: C_CameraSolver's outline and points are thinner than in older versions of Nuke.

• ID 400463 - High DPI: Double line highlight around the maximum permissible nodes in the Properties panel.

• ID 400445 - High DPI: F_WireRemoval's controls are smaller and the icon is different to older versions of Nuke.

• ID 400389 - High DPI: The F_Steadiness node controls are thinner than in older versions of Nuke.

• ID 400387 - High DPI: F_RigRemoval's controls are smaller and the default removal area is more square than in older versions of Nuke.

• ID 400268 - High DPI: F_Align's controls and outlines are smaller and thinner than in older versions of Nuke.

• ID 400232 - High DPI: CameraTracker's thumbnails bar is not scaled to fit the width of Viewer.

• ID 400101 - High DPI: The Sparkles node bounding box outline is thinner and smaller than in older versions of Nuke.

• ID 399232 - Python: Declaring TimeBase(None) causes Nuke to crash.

• ID 399228 - High DPI: Moving Nuke between monitors with different scaling ratios causes GLWidgets to draw incorrectly.

• ID 398978 - GridWarpTracker: Selecting grids Pythonically does not update the node Properties correctly.

• ID 398880 - High DPI: Changing the scaling of 4K monitors while in fullscreen mode doesn't close the fullscreen window when exiting, causing Nuke Studio to become unresponsive.

• ID 398862 - High DPI: Changing the scaling on a monitor causes the controls to disappear.

• ID 398213 - macOS only: Switching to a Retina display and then drag-selecting nodes in the Node Graph causes the interface to flicker.

• ID 397516 - DNxHR: Certain .mov file transfer_function metadata in Nuke does not match when compared to nclc atom.

• ID 397218 - Inpaint: The Stretch > Amount control can be unstable when animated over a number of frames.

• ID 394789 - macOS only: Scrolling in properties panels that contain a curve widget, such as ColorCorrect, occasionally causes the interface to flicker.

• ID 394019 - macOS only: Enabling Fullscreen mode changes the depth of floating windows, resulting in some windows being obscured.

• ID 393373 - GridWarpTracker: Dragging multiple grid vertices and holding Shift does not snap points to the grid.

• ID 393052 - macOS only: Tooltips occasionally don't display correctly.

• ID 392223 - macOS only: The installer window is slightly blurred.
As a workaround, resize the window to improve the resolution.

• ID 392143 - GridWarpTracker: Moving keyframes created by autokey in the Curve Editor or Dope Sheet adds another keyframe at the current frame.

• ID 392127 - GridWarpTracker: The magnifying window displayed over grid vertices during mouse-over changes position if you press Ctrl/Cmd.

• ID 390551 - GridWarpTracker: Enabling Invert stops the preview working as expected.

• ID 389356 - GridWarpTracker: Attempting to use GridWarpTracker in vanilla Nuke only displays a license error once.

• ID 388836 - GridWarpTracker: Toggling grid visibility does not affect the transform widget.

• ID 388455 - High DPI: Hovering down a menu list leaves orange highlight outlines around items.

• ID 386719 - Windows only: AJA Kona 4 12-bit dual link 1080p50a, 1080p59.94a, and 1080p60a output is incorrect.

• ID 386517 - Timeline Playback: Clicking the skip to start button and clearing the playback cache simultaneously causes Nuke Studio to crash.

• ID 383542 - GridWarpTracker: Adding a NoOp downstream of a GridWarpTracker with linked knobs occasionally causes Nuke to crash.

• ID 379710 - GridWarpTracker: Pressing Esc during tracking does not stop tracking or create a keyframe at the current frame.

# Developer Notes

Here are the changes relevant to developers. See Help > Documentation from the Nuke menu bar or https://learn.foundry.com/nuke/developers/120/ndkdevguide/appendixc/index.html for more information.

As Nuke develops, we sometimes have to make changes to the application programming interface (API) and application binary interface (ABI) under the hood. We try to keep these changes to a minimum and only for certain releases, but from time to time API and ABI compatibility is not guaranteed. See the following table for the situations when you may have to recompile your plug-ins and/or make changes to the source code.

Release Type | Example | Compatibility | Recompile | Rewrite
--- | --- | --- | --- | ---
Version | 11.2v1 to 11.2v2 | API and ABI |  |
Point | 11.1v1 to 11.2v1 | API |  |
Major | 11.0v1 to 12.0v1 | - |  |

Additionally, node Class() names occasionally change between major releases. While these changes do not affect legacy scripts, you may not get the results you were expecting if a node class has been modified. The toolbars.py file, used to create Nuke's node toolbar, contains all the current node class names and is located in <install_directory>/plugins/nukescripts/ for reference.
As an example, between Nuke 9 and Nuke 10, the CameraShake node Class() changed from CameraShake2 to CameraShake3. In the toolbars.py file for the two releases, the entries for the CameraShake node appear as follows:
m.addCommand("CameraShake", "nuke.createNode(\"CameraShake2\")", icon="CameraShake.png")
m.addCommand("CameraShake", "nuke.createNode(\"CameraShake3\")", icon="CameraShake.png")

## New Features

There are no new features in this release.

## Feature Enhancements

There are no feature enhancements in this release.

## Bug Fixes

• ID 416984 - Python: The sendToViewer() function did not work as expected.

• ID 419903 - Windows only: Importing Nuke as a Python library did not work as expected.