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3dworldmag.com
ew other parts of the 3D market offer quite the thrilling – and often bemusing – diversity as rendering software. While most artists
are content to use the tools built into their primary application or one of a small number of specialist packages for modelling, texturing and animation, rendering solutions multiply like rabbits. In the preliminary research for this article, we counted over 40 currently in use – and that’s before you get to the CAD industry. Sometimes, you suspect that developers are writing them just for the fun of it…
So for anyone overwhelmed by the sheer range of systems available, we’ve put together this guide for the perplexed. But first, a few basic questions.
Do you need a third-party renderer?The first question to ask when choosing a renderer is whether you actually need a third-party solution. For modo and Cinema 4D users, the answer is probably ‘no’. Artists we spoke to commented that Cinema’s base engine is adequate for many jobs, although most professionals also use Maxon’s Advanced Render 3 module. Similarly, NewTek evangelist William Vaughan estimates that “90 per cent of LightWave users work with the built-in renderer”.
Over in the 3ds Max and Maya communities, things are rather different, with most mid-to-large VFX houses opting for a RenderMan-compliant system such as RenderMan, 3Delight or AIR; while most visualisation studios opt for one of the ‘big three’ 3ds Max renderers, V-Ray, Brazil r/s and finalRender, for their GI capabilities and high raytracing speed. Houdini’s built-in Mantra renderer offers a hybrid of the two approaches: its “single biggest underestimated feature”, according to Black Mountain VFX’s Abdelkareem Abonamous.
Does VFX have to mean RenderMan?In serious visual effects work, it’s easy to assume that there is only one renderer in town: Pixar’s RenderMan. But that isn’t necessarily the case. “RenderMan is great… if you have enough of a team to support it,” says VFX supervisor Allan McKay, a veteran of ILM, Blur Studio and Prime Focus. “A lot of small and mid-sized studios just automatically assume their work is going to look as good as the big boys if they use it. It’s like buying a Flame suite because you hear it’s good for compositing.”
For smaller studios, RenderMan-compliant systems like 3Delight, AIR or even the open-source Aqsis
and Pixie offer many of the benefits without such heavy technical overheads, while McKay notes that mental ray is also worth considering. “RenderMan is much more flexible and open, so it’s very fast when optimised. But mental ray is really solid for certain things like water and glass.”
Do you need a physically based system?Of all of the issues raised here, the pros and cons of physically based rendering have probably been responsible for the most flame wars over the past five years. While conventional renderers use mathematical shortcuts to approximate the behaviour of light, sacrificing absolute realism for speed and controllability, newer systems such as Maxwell Render, fryrender and Indigo Renderer use algorithms that closely replicate the real world. Such packages progressively refine the rendered result over time, resulting in a trade-off between speed and image quality. They offer potentially unparalleled results, but many artists find them agonisingly slow.
So which is ‘better’? While most visualisation studios we spoke to used V-Ray for most of their work, physically based renderers also had staunch supporters; while some used both, either on a per-job basis, or employing a physically based renderer to get an idea of what overall lighting levels should be. This one really does come down to personal taste.
The right renderer for the jobOver the next six pages, you can find profiles of ten of the most important renderers currently on the market – and what their users feel are their strengths and weaknesses. For reasons of space, we haven’t included renderers intended primarily for industrial design tools or SketchUp. Nor have we covered renderers still awaiting a 1.0 release, such as LuxRender or FurryBall; or those on which development has been discontinued, such as Gelato or BMRT. And, with the exception of mental ray, we felt that it was unnecessary to review the built-in render engines of the main 3D packages in detail, since most people are already familiar with them.
The summary table at the end of the article lists other key third-party renderers and built-in render engines, and you can find a more information on our website, including an extended version of this article. But for now, happy render hunting!
More information online: tinyurl.com/renderers
The making of 2012
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048 | | February 2010
GLOSSARYKey technical terms used in this article
Biased rendering
> Any rendering system that does not converge on the correct solution when many renders of the same scene are averaged. Bias often occurs when an algorithm ignores or misrepresents the contribution of a particular lighting effect – for example, reflected or refracted light – for the sake of computational speed. Many standard algorithms, including most radiosity methods and photon mapping, are biased.
RenderMan-compliant renderer
> A renderer that conforms to Pixar’s RenderMan Interface Specification protocol. Often known as RIB renderers after RenderMan’s native RIB file format. The Pixar software commonly known as ‘RenderMan’ used to be more strictly known as ‘PhotoRealistic RenderMan’ or ‘PRMan’, to distinguish it from this protocol.
Unbiased rendering
> Any rendering system that converges on the correct solution on average. The term is often used interchangeably with ‘physically based rendering’, although this is not actually accurate: a result that is ‘physically correct’ is one that matches nature, whereas ‘unbiased’ is purely a mathematical concept.
01 V-RayMany 3ds Max artists’ renderer of choice, and especially ubiquitous in visualisation
> TYPE Biased/unbiased (depends on settings), non-RenderMan-compliant> PRIMARY USES VFX, visualisation> HOST APPLICATIONS Native support for: 3ds Max, Maya. Via third party: Blender, Cinema 4D, Rhino, SketchUp> PRICE $999> DEVELOPER Chaos Group
At times, the presence of V-Ray in the ‘software used’ lists in online galleries seems so ubiquitous that you’d be forgiven for thinking that it came built in to 3ds Max: just one measure of how much the speed and power of this Bulgarian-developed renderer have endeared it to artists, both for visualisation and personal work, and to a lesser extent, VFX. Although interviewees noted that recent updates to mental ray are encouraging some studios to switch back, V-Ray’s all-round strengths, good forum support and large pool of freelance artists make it difficult to dislodge from its position of dominance in the industry.
EXPERT OPINIONGus Capote, art director, Neoscape
STRENGTHS • Great speed-to-render-quality ratio• Very stable on large scenes• Multiple calculation options, including brute
force, irradiance maps and light cacheWEAKNESSES• Limited antialiasing on channel passes • Distributed rendering can create issues
with 3ds Max’s Backburner system
An industry standard: four of the five previous winning entries in the Architectural 3D Awards, including this 2006 image by Gustavo Capote, list V-Ray as the renderer used
Rendering software Rendering software
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Renderers: a guide for the perplexedRenderMan or RenderMan-compliant? V-Ray or mental ray? Our guide to today’s expanding rendering software market cuts through the confusion to help you find the renderer you really need
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Rendering software
»
FPrime offers LightWave 3D users fast, intuitive interactive rendering on jobs such as this print ad from Splashlight
04 HyperShotA ‘little renderer’ from the world of design visualisation that’s starting to make it big in DCC
> TYPE Biased, non-RenderMan-compliant> PRIMARY USES Visualisation> HOST APPLICATIONS Native support for: Pro/Engineer, Rhino, SketchUp, SolidWorks, SpaceClaim. Supports most DCC packages via 3DS, Collada, FBX and OBJ formats > PRICE $995 (HD edition: see website for others)> DEVELOPER Bunkspeed
With a development team including technical Academy Award winner Henrik Wann Jensen, there was little doubt that HyperShot would turn out to be a bit special. Marketed as ‘The first digital camera for your 3D data’, ease of use was a priority from the outset, with the renderer quickly finding favour with industrial designers wanting to visualise their own models, but put off by the complexities of Maya or Showcase. Recently, however, DCC professionals have begun to realise the power concealed beneath HyperShot’s deceptively simple exterior. “It’s a little renderer – but it can kick ass,” says Escape Studios training development director Lee Danskin.
EXPERT OPINION Mark Pritchard, design manager, Drive Design
STRENGTHS• Extreme ease of use• Very rapid results• Deceptively flexible material systemWEAKNESSES• Manipulation tools can be awkward
03 finalRenderA fast, versatile raytracing render engine that performs strongly on complex scenes
> TYPE Biased, non-RenderMan compliant> PRIMARY USES VFX, visualisation> HOST APPLICATIONS 3ds Max, Cinema 4D, Maya> PRICE €695–1,295 ($1,050-1,950: varies according to edition)> DEVELOPER cebas Visual Technology
Speed and performance on complex scenes were the key features cited by our interviewees in choosing finalRender, one of the three ‘big’ 3ds Max renderers: both selling points that seem to have been amplified in the recent R3 release. While a smaller user base makes it more difficult for studios to call upon a pool of freelancers while scaling up for projects than with V-Ray, the product maintains a strong following – while its visibility in the world of visual effects has been recently raised by its use at Uncharted Territory, lead facility on Roland Emmerich’s 2012. Native versions for Maya and Cinema 4D further widen finalRender’s appeal.
EXPERT OPINION Ari Sachter-Zeltzer, owner, Shadowplay Studio
STRENGTHS• Extensive, customisable feature set • Good render elements system, including option
to include/exclude objects• Powerful new layered EXR exporterWEAKNESSES• Hardcoded defaults not ideal for speed or quality• Needs a proxy system
02 Brazil r/sA third-party renderer for 3ds Max that straddles the worlds of VFX and visualisation
> TYPE Biased, non-RenderMan-compliant> PRIMARY USES VFX, visualisation> HOST APPLICATIONS Native support for: 3ds MaxVia third party: Rhino> PRICE $995 (includes 10 render nodes)> DEVELOPER Caustic Graphics
Of the three main third-party 3ds Max renderers, Brazil r/s has arguably the strongest pedigree in VFX. Scott Kirvan and Steve Blackmon, co-founders of original developer SplutterFish, both worked at Blur Studio in the 1990s: a background borne out by Brazil’s raytracing and antialiasing capabilities. While it has not achieved the same ubiquity in visualisation as V-Ray – and lacks a physical sky system and GI cache for animations – it maintains a dedicated user base, though announcements have slowed since Brazil was acquired by hardware rendering firm Caustic Graphics earlier this year. It will be interesting to see where Caustic takes this much-loved tool.
EXPERT OPINION Michiel Quist, founder, 3idee
STRENGTHS• High stability• Very fast raytracing and 3D motion blur• Quality and speed of image samplingWEAKNESSES• Small user base• No SDK
05 FPrimeThe interactive renderer that changed the way many people work with LightWave 3D
> TYPE Biased, non-RenderMan-compliant> PRIMARY USES General> HOST APPLICATIONS LightWave 3D> PRICE $399> DEVELOPER Worley Laboratories
When Steve Worley first released FPrime back in 2004, some people jokingly suggested that he should put in an offer to buy LightWave itself, such was the developer’s standing in the host app’s user community. While the market has caught up to some extent, with some interviewees reporting that they now use FPrime mainly for setting up lights and surfacing, it’s still remarkable how quickly this ultra-fast interactive renderer made itself indispensable in so many people’s workflows. Real-time previews make set-up more intuitive, while the progressive rendering engine allows users to stop and start renders without having to wait to the end to see results.
EXPERT OPINION Joe Zeff, Creative director, Splashlight
STRENGTHS• Ultra-fast rendering on complex scenes• Handles area lights and transparency
without significant time penalty• Intuitive, efficient progressive render engineWEAKNESSES• Lacks ability to use LightWave’s volumetrics• Struggles with some new material nodes
Its origins may lie in VFX, but Brazil r/s also remains a workhorse of visualisation studios such as Utrecht’s 3idee
Used in both VFX and visualisation, recent
high-profile finalRender projects include these shots from Uncharted
Territory’s work on the movie 2012
While its first audience came from automotive visualisation, DCC studios are starting to realise the power and simplicity of HyperShot
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Rendering software
07 MachStudio ProCan this GPU-accelerated production renderer and compositing system live up to its early hype?
> TYPE Biased, non-RenderMan-compliant> PRIMARY USES Animation, visualisation> HOST APPLICATIONS Native support for: ArchiCAD, 3ds Max, Maya, Rhino, SketchUp.Supports most DCC applications via FBX format> PRICE $3,995> DEVELOPER StudioGPU
With the advent of a new generation of tools that actively harness a workstation’s GPU to calculate results, the goal of production-quality renders in seconds – rather than minutes or hours – may finally be approaching. The first of this wave of applications to hit the market, GPU-accelerated rendering, compositing and grading system MachStudio Pro promises not merely dramatically reduced render times but the potential to open up entirely new production workflows. While it’s still too early to tell whether the software really lives up to the hype, sources tell us that major London VFX houses are in detailed discussions with developer StudioGPU.
EXPERT OPINION Chris Edwards, CEO, The Third Floor
STRENGTHS • Intuitive interactive workflow• Empowers directors and cinematographersWEAKNESSES• Export process from Maya is time-consuming
and not straightforward• Artists require training in unique workflow
10 TurtleRobust global illumination and advanced baking features make for an indispensable games tool
> TYPE Biased, non-RenderMan-compliant> PRIMARY USES Games> HOST APPLICATIONS Maya> PRICE $1,499> DEVELOPER Illuminate Labs
Initially perceived as a more general-purpose global illumination renderer, Turtle quickly found its niche in games, where it developed a reputation as a fast, flexible system for baking lighting information. Employed on such distinctly different-looking recent productions as Dragon Age: Origins (pictured above), Killzone 2 and Mirror’s Edge, users praise its feature set, the flexibility offered by Lua scripting, and the technical support offered by developer Illuminate Labs. There may be other ways to solve the problem of creating lighting assets for games, but for its power to enable a studio to quickly iterate the look and feel of a level, Turtle is largely unchallenged in this sector of the market at the minute.
EXPERT OPINION Andreas Papathanasis, senior graphics programmer, BioWare
STRENGTHS • High-quality results• Extensive render optimisation options• Large range of map types and output formatsWEAKNESSES• Difficult to integrate into baking pipeline
if not using Maya for level editing – unlike Turtle’s sister application, Beast
06 Maxwell RenderThe application that introduced most artists to the idea of physically based rendering
> TYPE Unbiased, non-RenderMan-compliant> PRIMARY USES VFX, visualisation> HOST APPLICATIONS Native support for: 3ds Max, ArchiCAD, form.Z, Cinema 4D, LightWave 3D, Maya, modo, Rhino, SketchUp, SolidWorks, SoftimageVia third party: Allplan, Houdini, MicroStation, solidThinking> PRICE $995> DEVELOPER Next Limit Technologies
At the time of its original alpha release in 2004, physically based system Maxwell Render became one of the most talked-about products in the 3D industry. Five years on, it remains the de facto benchmark for other renderers of its type. Version 2.0, released in late 2009, boasts a greatly improved speed-to-noise ratio and greater processor scalability – one interviewee reported it performs 4-15 times faster than 1.7, depending on the scene – and while its core market remains visualisation, Maxwell is also being adopted for some visual effects tasks, including matte work on The Curious Case of Benjamin Button.
EXPERT OPINION Tim Ellis, head of unbiased lighting and texturing, Cityscape Digital
STRENGTHS• Unparalleled render quality• Intuitive network rendering,
including resume render• Powerful Multilight systemWEAKNESSES• Render times can still
be very long, particularly for larger scenes
»
Offering extreme realism, and now with an improved speed-to-noise ratio, Maxwell remains a benchmark for unbiased renderers
Early users of GPU-accelerated rendering and compositing system MachStudio Pro include pre-viz house The Third Floor. Will VFX studios follow suit?
Turtle bakes all the components needed for modern games such as Dragon Age: Origins, including normal maps, ambient occlusion and polynomial textures
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09 RenderManPixar’s production workhorse retains its position as the big name in rendering for visual effects
> TYPE Biased, RenderMan-compliant> PRIMARY USES VFX> HOST APPLICATIONS Native support for: MayaVia third party: Blender, Cinema 4D, Softimage> PRICE $3,500 (Pro Server edition) > DEVELOPER Pixar Animation Studios
For large animation houses, RenderMan remains the renderer to beat. Developed and used by Pixar since the late 1980s, our interviewees noted that it requires a large technical support team to harness fully, and that reliance on third-party exporters to get files into its RIB format can be an issue for smaller studios, but that its reputation as a production workhorse remains unchallenged. As ILM VFX supervisor John Knoll notes: “RenderMan’s widespread use among facilities whose reputation depends on creating consistently excellent imagery is telling. Its extreme flexibility, quality, robustness and scalability have made it the standard that it is today.”
EXPERT OPINION John Knoll, VFX supervisor, Industrial Light & Magic
STRENGTHS • Extremely robust, production-proven renderer• High-quality output• Flexible and scalableWEAKNESSES• More costly than other RenderMan-compliant
rendering solutions
RenderMan remains the tool of choice for large studios such as ILM and Digital Domain on projects such as Transformers: Revenge of the Fallen
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08 mental rayThe first port of call for artists working in Max, Maya or Softimage, enjoying a resurgence in popularity
> TYPE Biased, non-RenderMan-compliant> PRIMARY USES General> HOST APPLICATIONS 3ds Max, AutoCAD, Inventor, Maya, Revit, Softimage> PRICE Integrated into host application> DEVELOPER mental images
Built into 3ds Max, Maya and Softimage, mental ray remains the first port of call for many smaller studios, both in VFX and visualisation, with interviewees reporting a return to the platform from third-party tools in recent years. As well as the price – or lack of it – users cite its wide range of physically accurate preset shaders and ease of set-up as key selling points. Jamie Cardoso, co-author of the book Realistic Architectural Visualization with 3ds Max and mental ray, notes the “few drawbacks” as the nature of its proxy system, and the fact that the new iray interactive rendering engine, while more powerful than alternatives, is not yet part of Max or Maya.
EXPERT OPINION Jamie Cardoso, senior 3D visualiser and consultant
STRENGTHS • Free, and fully integrated into host packages• Wide range of physically accurate preset shaders• Rapid results on complex scenesWEAKNESSES• Proxy system does not enable retrieval of the
original mesh as in V-Ray• iray not yet part of host applications
A shot rendered in 3ds Max and mental ray at GMJ Design. The renderer offers an attractive mix of power and accessibility
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A retail unit in Oxford Street, London rendered with 3ds Max and mental ray at Glass Canvas Productions
3dworldmag.com054 | | February 2010 3dworldmag.com
Selected built-in render engines Selected third-party renderers
Developer
Current release
Price
Annual maintenance
Other pricing notes
RenderMan-compliant?
Unbiased?
Fully GPU-accelerated?
Includes shader compiler?
Key market sectors
Applications supported
3ds Max
Blender
Cinema 4D
Houdini
Lightwave 3D
Maya
Softimage
Other (selected applications only)
Platforms
Features
64-bit compatible
SDK
Network rendering
Instances
Proxy system
Render layers/passes
Interactive render preview
Material system
• Layered materials
• Bump and normal mapping
• Micropoly displacement/MTD
• Subsurface scattering
• BRDF support
Raytracing
Global illumination
• Ambient occlusion
• Colour bleeding
• HDRI
• Caustics
Camera controls
• Depth of field
• 3D motion blur
• f stop controls
• Bokeh effects
Tonemapping
Hair and fur
Particle rendering
• Points
• Spheres
• Implicit surface/blobbies
Baking tools
• Texture baking
• Vertex baking
• Point cloud baking
• Radiosity normal maps
Physical sky
Photometric lights
EXR support
Other key features
Blender Foundation
2.5
Free
N/A
Python only
Any
N/A
Win/Mac/Linux
In development
In development
In development
Built-in compositor
Built-in video editor
Audio playback/sync
Maxon Computer
11.5
$3,695
N/A
Price for Studio bundle
Any
N/A
Win/Mac
Built-in texture painting
Unlimited render nodes
True multi-threading
Side Effects Software
10.0
$1,995
$800
Unlimited render nodes
Any
N/A
Win/Mac/Linux
Volume rendering
Amazon cloud support
Multi-segment blur
NewTek
9.6
$895
N/A
Unlimited render nodes
Any
N/A
Win/Mac
Linux due in CORE
Due in CORE
Anim. radiosity cache
Unlimited render nodes
EXIF support
Luxology
401
$995
N/A
Inc. 50 render nodes
Any
N/A
Win/Mac
Internal
Volumetric lights
Anisotropic effects
Fresnel effects
DnA Research
9.0
$900 - $2,150
$190 - $450
First two threads free
VFX
Via third-party plug-in
Via third-party plug-in
Native
Native
Native
Rhino
Win/Mac/Linux
Via RSL
Bent normals
Point-based GI
Stereo rendering
Procedural geometry
SiTex Graphics
9.0
$450
$150
Price for four threads
VFX
Via third-party plug-in
Via third-party plug-in
Native
Via third-party plug-in
In progress
Rhino
Win/Linux
Programmable shading
Instancer shaders
Caustic Graphics
2.0
$995
N/A
Inc. 10 render nodes
VFX, visualisation
Native
Rhino
Win
Quasi-Monte Carlo core
Unlimited number of
render presets
cebas Visual Tech.
3.0 (3ds Max ed.)
$1,050 - 1,950*
See website
*€695 - 1,295
VFX, visualisation
Native
Native
Native
Win
Unlimited render elems.
True hybrid scanline/
raytracing
Worley Laboratories
3.0
$399
N/A
Unlimited render nodes
Any
Native
Win/Mac
Windows only
Via LightWave
Via LightWave
Hybrid 2D/3D
Via LightWave
Image zoom support
Supports multiple
cameras/windows
RandomControl
1.0
€795 ($1,190)
N/A
Inc. 2 render nodes
Visualisation
Native
Native
Native
Native
Native
modo, Rhino, SketchUp
Win
Not public
Lighting only
Present
Bunkspeed
1.9
$995
N/A
Price for HD edition
Visualisation
Via OBJ, FBX
Rhino, SketchUp
Win/Mac
Turntable animation
Render queue
(Both Pro edition only)
Glare Technologies
2.2
€295 ($440)
N/A
Inc. 2 render nodes
Visualisation
Native
Native
Native
Native
Native
SketchUp
Win/Mac/Linux
Bump only
Via other settings
Shading language
Full spectral rendering
Camera aperture diffr.
Ioannis Pantazopoulos
2008
Free
N/A
Hybrid
Visualisation
Native
Native
SketchUp
Win/Mac/Linux
Instancing brush
Easy clay/depth/mask
render modes
StudioGPU
1.2
$3,995
N/A
In development
Any
Via FBX
In development
Native
In development
Rhino, SketchUp
Win
In development
In development
In development
In development
Stereoscopic rendering
Real-time subpixel
displacement
Next Limit Tech.
2.0
$995
N/A
VFX, visualisation
Native
Native
Via third-party plug-in
Native
Native
Native
modo, Rhino, SketchUp
Win/Mac/Linux
Lighting only
Multi-light system
3,500+ free materials
Native RealFlow support
mental images
3.8
As host app.
N/A
Standalone: $745
Optional
Optional
VFX, visualisation
Native
Supported
Supported
Native
Native
Win/Mac/Linux
Via extension
Via extension
Via extension
Progr. IBL rendering
Fast blur rasterisation
MetaSL language
Pixar Anim. Studios
15.0
$3,500
$700
Price for Pro Server ed.
Animation, VFX
Via third-party plug-in
Via third-party plug-in
Native
Native
Via third-party plug-in
Win/Mac/Linux
Via custom code
Via image shaders
Via custom shader
Via custom shader
Via custom code
Deep shadows
Point-based colour
bleeding and SSS
Illuminate Labs
5.0
$1,499
$899
Games
Native
Win/Mac/Linux
Optimised baking
Scriptable via Lua
Hardware vis. of results
Chaos Group
1.5
$999
N/A
Inc. network rendering
Optional
VFX, visualisation
Native
Via third-party plug-in
Via third-party plug-in
Native
In development
Rhino, SketchUp
Win/Mac/Linux
Via V-Ray RT
3ds Max only
Varies with ed.
Via plug-ins
VRayFur
VRayEnvironmentFog
Blender Cinema 4D Houdini Escape LightWave 3D modo 3Delight AIR Brazil r/s finalRender FPrime fryrender HyperShot Indigo Renderer Kerkythea MachStudio Pro Maxwell Render mental ray RenderMan Turtle V-Ray
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Rendering software Rendering software
In brief | Key renderers compared