Kickstart your creativity with GPU rendering in Modo 13.2

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William Vaughan is a difficult artist to categorise. He's currently senior 3D production manager at multinational shoe firm New Balance, but he's also a prolific creator of 3D characters – his work has appeared in Hollywood movies, architectural visualisations, and even been turned into vinyl toys. An author and educator – he was previously academic director of The Digital Animation & Visual Effects School in Florida – his published output ranges from guides to 3D modelling to science-fiction novels.

For the past decade, the thread uniting this varied career has been Modo: Foundry's creative 3D modelling software, and Vaughan's primary production tool. And what currently excites him about the application is the way that the latest Modo 13 Series of releases harness the power of modern GPUs, both through Radeon ProRender – AMD's powerful physically based render engine – and mPath, Foundry's ground-up redesign of the native Modo renderer.

Modo for character modelling

Vaughan first used Modo on Pixar's 2009 animated short, Partly Cloudy. He worked as a freelance character modeller on the project, teaching himself to use the software over the course of a single weekend.

“I bought Modo on Friday, spent my weekend modelling two characters to get familiar with it, and I was ready to go on Monday,” he recalls. “The crazy thing was that I had two day jobs at the time, but there was no way that I was passing [an opportunity like that] up.”

William Vaughan now uses Foundry’s Modo as his principal modelling and rendering software

“At the time, what blew me away was how interactive everything was,” he continues. “I wasn't keying in numbers and seeing what happened: I was interacting with my model in real time. That and Modo's selection tools were the biggest selling points to me.”

Over time, Modo would gradually replace other 3D software in Vaughan's workflow, both on his personal and professional projects. “It's a complete package: all of the tools are there, they're easy to use, and they're flexible,” he explains. “Although I model 3D characters, I think of myself more as a problem-solver – and Modo has everything I need to solve my problems.”

Modo for product design

Vaughan has also been instrumental in implementing Modo in the design pipeline at New Balance. Previously, the company's workflow involved creating designs in 2D, having them manufactured physically, then modifying the 2D designs accordingly. Now, New Balance uses Modo to create 3D prototypes.

“One of the big driving forces for introducing 3D was to cut down on physical samples,” says Vaughan. “By doing that, we're cutting costs, but also reducing the impact on the environment.”

All of New Balance's shoes, like the FuelCore Agility v2, are prototyped in 3D inside Modo

New Balance has introduced Foundry software right through its production pipeline, with designers generating concepts in Modo, iterating on looks and generating technical documentation in Colorway (another tool that Vaughan describes as a “game-changer”) then taking the CAD files used for manufacturing and rendering them in Modo to produce marketing images.

According to Vaughan, the new workflow enables New Balance to get to an accurate representation of how a shoe will look much earlier on in the production process, enabling the firm to make more informed decisions on new designs. “Whereas before, designers might have showed up [to the first design review] with Post-it notes and sketches, they’re showing up with full 3D models,” he says.

Having now trained over 50 of New Balance designers to use Modo, Vaughan praises the software's shallow learning curve. “It's very artist-friendly,” he comments. “Most of New Balance's designers didn't have a background in 3D, but in Modo, you can get to a nice-looking render very quickly.”

Modern GPUs for rendering

Of all of the changes in this year's Modo 13 Series of updates, Vaughan is most excited about the way the software is taking advantage of the processing power of modern graphics cards; a process that began in Modo 13.0 with the integration of Radeon ProRender. AMD's physically accurate GPU renderer provides artists with fast, interactive, photorealistic previews of 3D models.

The Modo 13 Series enables artists to use their GPUs to speed up renders, both for interactive previews and for final-quality output

“Modo is known as a great modeller. People know that it produces good renders. But they have been waiting to take advantage of the GPU [to speed up rendering],” he says. “Radeon ProRender was the first taste of that in a Modo pipeline.”

Since its introduction, Radeon ProRender has become more tightly integrated into standard Modo workflows with each successive release, with Modo 13.2 adding support for the Modo physical material's Specular and Dissolve properties, and the Film Offset controls of the Modo camera.

In some cases, a scene that would normally take 24 minutes to render was done in nine. It's just insane.

William Vaughan

More recently, Vaughan has been testing mPath, the new path tracer introduced in Modo 13.2. mPath reinvents Modo's native render engine as a modern, hardware-agnostic renderer, able equally to take advantage of the processing power of massively multi-core CPUs like AMD's Ryzen Threadripper chips, and of professional GPUs.

This new architecture brings with it a range of benefits, distilling Modo's render settings to a much smaller set of parameters and enabling artists to generate render passes more flexibly. But for New Balance, the main appeal of mPath is sheer, raw speed.

In Vaughan's tests, existing New Balance production scenes rendered in mPath in Modo 13.2 in a fraction of the time achieved using the standard renderer in Modo 13.1. “In some cases, a scene that would normally take 24 minutes to render was done in nine,” he says. “It's just insane.”

Time-saving new modelling and animation tools

Modo 13.2 also brings with it updates to the powerful direct modelling tools that New Balance uses in production every day. The new Edge Chamfer tool creates rounded edges on geometry – essential in hard-surface modelling workflows like product design – generating better geometry and cleaner UVs than the existing Edge Bevel tool, which it is ultimately intended to replace.

As well as its rendering features, Modo 13.2 adds new tools for character rigging and animation

In addition, the update extends Modo's rigging and animation tools, both for technical visualisations and for the characters Vaughan creates in his personal work. He is particularly impressed with the new Planar IK system, which makes it easier to create soft or stretchy IK setups when rigging limbs. “I'm having to do less work to get nice soft transitions from when a limb is bent to when it is fully extended,” he says. “That affects something as simple as a walk cycle.”

Other changes in Modo 13.2 include a new system of Gradient Layers and Gradient Modifiers, reducing the number of deformers required to create complex character rigs, and more streamlined workflow in the Graph Editor, with options to fit the Timeline range automatically to the animation curve selected, and to normalise the vertical ranges of a set of curves.

A game-changer for Modo users

But for New Balance, the key changes in Modo 13.2 are those new rendering tools. “We’re constantly spitting out renders,” Vaughan points out. “There isn’t a day where we don’t produce hundreds, if not thousands of frames.”

Being able to use the GPU for rendering will transform artists’ workflows at companies like New Balance, says William Vaughan

For Vaughan, the fact that Modo can now take advantage of the GPU to speed up rendering – whether as interactive previews with AMD's Radeon ProRender, or as final-quality output with mPath – is “one of the biggest pieces of news that Foundry could have for the software”. 

“I see myself primarily as a modeller, so the fact that it's the thing I'm most excited about speaks volumes to the importance of GPU rendering,” he says. “Modo is already a complete toolset for 3D artists – but if you can make our workflow faster, we'll be very happy.”

You can see more of William Vaughan's work in his online gallery. To try the new rendering features in Modo 13.2 for yourself, download the free 30-day trial from Foundry’s website.

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