PHYSICALLY BASED RENDERING FOR 3DSMAX LIGHTWORKS IRAY + FOR 3DSMAX CASSIE THIBODEAU - NVIDIA PETER DE LAPPE NVIDIA DAVID COLDRON - LIGHTWORKS

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1 Webinar: Photorealistic visualization with Speed and Ease Using Iray+ for Autodesk 3ds Max PHYSICALLY BASED RENDERING FOR 3DSMAX LIGHTWORKS IRAY + FOR 3DSMAX CASSIE THIBODEAU - NVIDIA PETER DE LAPPE NVIDIA DAVID COLDRON - LIGHTWORKS

2 Built for Designers Intuitive & Easy to Use Fully Scalable & Interactive a simulation of the world as you see and understand it

3 Photorealistic 3D renderer Physically based materials and lights Ray Tracing and Path Tracing Full floating point (e.g. exr) Progressive Interactive Photoreal mode Interactive mode What is Iray? MDL Material Definition Language Hybrid rendering on GPU and/or CPU Scales with additional CUDA devices Start fresh and think like a photographer with a new digital camera!

4 Physically-Based Path Tracing with a strong parallel to photography Employs lights and controls familiar to photographers (tone mapping)

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7 Physically Based Workflow Think in terms of the physical world; assign Lighting & Materials; add Iray Physically Based Lighting with Emissive Distribution Functions Physically Based Materials with BSDF Elements and Functions

8 Shared Materials MDL - The Material Definition Language Physically based materials Renderer independent material description (Iray, mental ray,...) Exchangable between applications (0x1 IFM, 3dsMAX Iray+, BIM IQ...) Support for measured materials BRDF, BSDF, Layered materials, Thin Film Coatings, Chromatic disperrsion,...

9 Shared Materials MDL - The Material Definition Language Bidirectional Scattering Distribution Functions Diffuse Reflection Diffuse Transmission Simple Glossy Glossy Specular Pure Reflection Specular Reflection & Transmission Measured BSDF

10 MDL Materials EDF and VDF Emissive Distribution Functions Diffuse Spot IES Profile Volume Distribution Functions Anisotropic Absorption & SSS Anisotropic + IOR & Internal Scattering Anisotropic w/ Light

11 Layering Materials 1. Blood 2. Mask 3. Diffuse-Glossy Paint 4. Glossy reflection 5. Glossy reflection 6. Base component

12 Lighting Emissive Materials Photometric light (Photometric Lights with IES Profiles) Self illumination (Controls are similar to a Photometric Lights)

13 Accurate realism with HDR IBL

14 Caustics sampler Caustics

15 Architectural Sampler Metropolis Sampling : for many complex light setups some render solutions converge faster..

16 Light Path Expressions L.P.E. what is an LPE? A new method for selectively collecting ray types to named buffers A Regular Expression language or REGEX Write your own custom LPEs Many examples available Lightworks Iray+ exposes LPE with handles.... Visit blog.irayrender.com for ongoing discussion and examples

17 Light Path Expressions LPE s How do they work? LPEs are REGEXs that grep for rays by type and interaction LPEs output to a buffer at render time Buffers can be composited to achieve variations of the original result With and without the reflection buffer layer

18 Light Path Expressions Examples. I want the whole beauty pass : BP = <L.* E> I want to grep for environment rays only: Env = <Le.* E> I want to only indirect illumination (two plus bounces) : Indirect = <Le.{2, } E> I want to only reflections: Reflections = <Le <RS> E> more examples here: blog.irayrender.com

19 Light Path Expressions - Handles Rays that interact with back wall Rays that do not ( * color ) + =

20 Light Path Expressions in action

21 Light Path Expressions in action

22 Which is Iray and which is a Photograph?

23 Iray on VCA On Demand Rendering Power Ethernet or Internet VCA in Data Center via LAN or WAN Incremental Updates Iray Client App +10Mbit Down Preferred Persistent Storage for Rapid Updates and Minimal Uploads Interactive Image Stream

24 Renault Production Example Dual GPU workstation = 45 seconds/frame (2x Tesla M2090 GPUs) 30 seconds = 900 frames = hours = overnight NVIDIA VCA = 9 seconds/frame = 2.25 hours = several per day 16 VCA Cluster = 0.6 seconds/frame = 8.5 minutes = a coffee break

25 See the VCA in action Visit NVIDIA Youtube Channel:

26 Iray+ in production Iray+

27 Join the beta program

28 Webinar: Photorealistic visualization with Speed and Ease Using Iray+ for Autodesk 3ds Max Thanks for Attending! Questions?

29 REGISTRATION IS OPEN! March 17-20, 2015 San Jose, CA #GTC15 20% OFF GM15WEB CONNECT LEARN DISCOVER INNOVATE Connect with experts from NVIDIA and other organizations across a wide range of fields Get key learnings and hands-on training in the 400+ sessions and 150+ research posters Discover the latest technologies shaping the GPU ecosystem Hear about disruptive innovations as early-stage start-ups present their work 4 Days Attendees 400+ Sessions 150+ Research Posters 40+ Countries 180+ Press & Analytics 100+ Exhibitors 29