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Production Volume Rendering Julian Fong, Magnus Wrenninge, Christopher Kulla, Ralf Habel July 2017 This course provides an overview of production volume rendering, focused on path tracing. The course will describe practical fundamentals for adding volume rendering to an existing path tracer, cover a complete range of volume integration scenarios and techniques, and describe in detail recent production-proven techniques for optimizing volume rendering. Paper (PDF) SIGGRAPH 2017 Course Notes |
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Path Traced Subsurface Scattering using Anisotropic Phase Functions and Non-Exponential Free Flights Magnus Wrenninge, Ryusuke Villemin, Christophe Hery July 2017 With the recent move to path tracing for both surface and volume rendering, subsurface scattering has been one of the last light transport modes to rely on empirical or approximate models. Although rendering of subsurface scattering using path tracing is conceptually simple, making the model artist friendly is not. Our new ... more Paper (PDF) Additional materials: [PTSSSAlbedoInversionCoeffs.txt] Available as Pixar Technical Memo #17-07 |
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Efficient Unbiased Rendering of Thin Participating Media Ryusuke Villemin, Magnus Wrenninge, Julian Fong September 2018 In recent years, path tracing has become the dominant image synthesis technique for production rendering. Unbiased methods for volume intergration have followed, and techniques such as delta tracking, ratio tracking and spectral decomposition tracking are all in active use, and this paper is focused on optimizing the underlying mechanics ... more Paper (PDF) |
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Art and Technology at Pixar (SIGGRAPH Asia 2018 Course) Ryusuke Villemin, Chia-Chi Hu, Sonoko Konishi, Hiroaki Narita, Magnus Wrenninge, David Yu December 2018 As described by this now famous quote "The art challenges technology, and the technology inspires art", technology has always played an important part in Pixar's movie making process. This course will show how we develop and utilize new technical advancements to tell more appealing stories, using real-world examples from our latest movie Incredibles ... more Paper (PDF) SIGGRAPH Asia 2018 Course |
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Product Importance Sampling of the Volume Rendering Equation using Virtual Density Segments Magnus Wrenninge, Ryusuke Villemin January 2020 We propose a new volumetric integration method that combines guiding of candidate point positions and importance resampling. We refer to this as the virtual density segment method (VDS). In particular, we show that this control can be driven by treating invertible PDFs as virtual density sources, which in turn ... more Paper (PDF) Available as Pixar Technical Memo #20-01 |