This has been a feature since Nuke 11.3v1, but I had no idea it existed until recently! In Preferences > Node Graph, there is a setting that enables a warning on a node when its bounding box is larger than a certain preset threshold. When enabled, the erroneous node will display a thick red border with a black dotted line around it; any downstream nodes that carry the large bbox will only display the black dotted line.

If you haven’t already, I recommend periodically switching this feature on and paying attention to any warnings that show, to ensure your Nuke scripts remain speedy and efficient! Although once you’ve optimized your bboxes, I would advise turning this feature off again, as it automatically processes every node every time you change frame, and can cause dramatic UI slowdowns on larger scripts…

Additionally, think about some knob defaults you can set on certain nodes to ensure your bbox stays small.
(e.g. create a shortcut that creates a Merge node, sets its ‘operation’ to mask and it’s bbox to A)

Lastly, with any node selected, you can run nukescripts.autocrop() in Nuke’s Script Editor to automatically reduce the size of your bbox to its optimal size.

Thanks to Conrad Olson for the tip!

When integrating CG characters into a plate and something seems not-quite-right, the first solution I look towards is adding more occlusion shadows, often referred to as “Ambient Occlusion”. Occlusion shadows help ground our CG characters and really connect them with the environment & live-action characters around them.

Most physically-based render engines are capable of rendering occlusion shadow AOVs, which are quite accurate when given photometric lights, but sometimes mathematically real and visually real isn’t the same thing…

Continue Reading "Create your own Ambient Occlusion in Nuke, using RayRender."

Unless you’re Compositing at Weta, Nuke’s Deep tools are quite barebones and don’t allow much flexibility. An issue I have commonly encountered is a lack of image filtering when DeepMerging two Deep images together, which causes crunchy edges. You could correctly argue that this comes from a lack of deep samples in rendered images, but this is often necessary…Continue Reading “A hack to filter DeepMerge operations.”

HTML is a programming language designed to view documents or websites in a web browser, although we can make use of it in Nuke to add some extra style to our nodes, gizmos, etc.

The aim of this article isn’t to teach you HTML, as that would be rather convoluted for what you need to know, but instead, I’ll share some easy snippets of code that will help you inside of Nuke!

Continue Reading "HTML in Nuke"

A common thread I’ve picked up among Compositors is they understand the value of utilizing Python in their day-to-day work, but are unsure how and where to start learning. If this sounds like you, I have some great news!

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Something I’m endlessly frustrated by is having to work around the way Nuke uses confusing hex colour values in Python to do things such as set a node’s ’tile_color’ knob. For example, how are we supposed to remember that 0xff000ff = green? I wrote two simple functions to get around this, which I hope you can make use of too…

Continue Reading "Quick Tip: Programmatically Dealing with Hex Colour in Nuke"

Image filtering is a necessary step in many tasks we do in computer graphics, but it often gets little cognisant attention from Compositors. When mentoring junior artists’ recently, I discovered they rarely know of this fundamental knowledge at all! So I thought it would be beneficial to write this article so we can brush up on the basics, maybe learn a new thing or two, and have a resource to point others’ towards if they’re stuck with this concept.

Continue Reading "Back to Basics: A Brief Lesson on Image Filtering & Node Concatentation"

If you’re like me, you’re always looking for ways to get an edge on efficiency in your workflow, and contribute more value to your team. A common thread between most Compositors is they see the value of utilizing Python, but are unsure how and where to start learning…

If this sounds like you, I have some great news — I’ve been hard at work behind the scenes, creating the solution to your problem! I’m incredibly excited to announce a new online course, comprising of 10 weeks of video tutorials, which is now available for pre-order!

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