Publications

VideoNeuMat: Neural Material Extraction from Generative Video Models

SIGGRAPH (Conference Track), 2026

Creating photorealistic materials for 3D rendering requires exceptional artistic skill. Generative models for materials could help, but are currently limited by the lack of high-quality training data. While recent video generative models effortlessly …
Project PDF
VideoNeuMat: Neural Material Extraction from Generative Video Models

Taming optimization variance in compact neural shading networks

SIGGRAPH (Conference Track), 2026

We present a training algorithm to mitigate optimization instabilities in small neural networks, like those used in real-time neural shading applications. While large, overparameterized models exhibit predictable convergence, smaller architectures …
doi PDF Supplementary Code
Taming optimization variance in compact neural shading networks

Real-Time Level-of-Detail Rendering with ReSTIR

SIGGRAPH (Conference Track), 2026

Rendering complex scenes in real time remains challenging due to strict performance constraints. Geometric level of detail (LoD) is widely used to reduce cost by replacing high-frequency geometry with prefiltered representations. ReSTIR significantly …
doi PDF Video
Real-Time Level-of-Detail Rendering with ReSTIR

NILE: Nested Interleaving of Low-Dimensional Elements

ACM Transactions on Graphics (SIGGRAPH), 2026

Sampling strategies in computer graphics have long been divided between local approaches, which optimize sample distributions independently at each pixel, and global approaches, which use high-dimensional low-discrepancy sequences to ensure …
doi PDF
NILE: Nested Interleaving of Low-Dimensional Elements

Multi-Layer Reservoir Splatting for Temporal Reuse under Disocclusion

SIGGRAPH (Conference Track), 2026

ReSTIR [Bitterli et al. 2020] efficiently reduces path tracing noise by reusing samples spatiotemporally. Recent ReSTIR methods [Liu et al. 2025] improve temporal reuse from prior frame primary hits. But disocclusions still invalidate some pixel …

doi PDF Video
Multi-Layer Reservoir Splatting for Temporal Reuse under Disocclusion

Compatibility-Guided Neighbor Selection for ReSTIR

Symposium on High Performance Graphics (Proc. ACM Comput. Graph. Interact. Tech.), 2026

Reservoir-based spatiotemporal importance resampling (ReSTIR) improves convergence of real-time Monte Carlo rendering by reusing samples between pixels and frames. Recent reservoir splatting and area ReSTIR methods improve ReSTIR’s temporal …
doi PDF Video Code Supplementary Image Viewer
Compatibility-Guided Neighbor Selection for ReSTIR

Stochastic Pairwise MIS for Unbiased Large-Kernel Reuse in Real Time

Computer Graphics Forum (Eurographics), 2026

Spatiotemporal resampling methods such as ReSTIR decrease noise in Monte Carlo rendering of dynamic content by reusing paths across frames and pixels. Standard ReSTIR reuses spatially from a small number of randomly selected neighbors. This reuse …
PDF Video Code
Stochastic Pairwise MIS for Unbiased Large-Kernel Reuse in Real Time

ReSTIR PT Enhanced: Algorithmic Advances for Faster and More Robust ReSTIR Path Tracing

Symposium on Interactive 3D Graphics and Games (Proc. ACM Comput. Graph. Interact. Tech.), 2026
🏆 Best Paper

Algorithms leveraging ReSTIR-style spatiotemporal reuse have recently proliferated, hugely increasing effective sample count for light transport in real-time ray and path tracers. Many papers have explored novel theoretical improvements, but …
PDF Supplementary Video
ReSTIR PT Enhanced: Algorithmic Advances for Faster and More Robust ReSTIR Path Tracing

Gradient-Domain ReSTIR Path Tracing

Computer Graphics Forum (Eurographics), 2026

Gradient-domain rendering accelerates realistic image synthesis by also estimating pixel color differences, which helps reconstruct high frequencies in the image domain. Converged images still require many samples per pixel even with denoising, and …
PDF Video Code
Gradient-Domain ReSTIR Path Tracing

Wave Tracing: Generalizing The Path Integral To Wave Optics

Computer Graphics Forum (Eurographics), 2026
🏆 Best Paper Honorable Mention

Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray-based …
doi PDF Supplementary
Wave Tracing: Generalizing The Path Integral To Wave Optics

VideoMatGen: PBR Materials through Joint Generative Modeling

ArXiv Preprint, 2026

We present a method for generating physically-based materials for 3D shapes based on a video diffusion transformer architecture. Our method is conditioned on input geometry and a text description, and jointly models multiple material properties (base …
arXiv PDF
VideoMatGen: PBR Materials through Joint Generative Modeling

UniRelight: Learning Joint Decomposition and Synthesis for Video Relighting

Advances in Neural Information Processing Systems (NeurIPS), 2025

Abstract We address the challenge of relighting a single image or video, a task that demands precise scene intrinsic understanding and high-quality light transport synthesis. Existing end-to-end relighting models are often limited by the scarcity of …
Project PDF
UniRelight: Learning Joint Decomposition and Synthesis for Video Relighting

SZ Sequences: Binary-Constructed (0, 2^q)-Sequences

ACM Transactions on Graphics (SIGGRAPH Asia), 2025

Low-discrepancy sequences have seen widespread adoption in computer graphics thanks to the superior rates of convergence that they provide. Because rendering integrals often are comprised of products of lower-dimensional integrals, recent work has …
doi PDF Supplemental
SZ Sequences: Binary-Constructed (0, 2^q)-Sequences

Sample Space Partitioning and Spatiotemporal Resampling for Specular Manifold Sampling

SIGGRAPH Asia (Conference Track), 2025

Caustics rendering remains a long-standing challenge in Monte Carlo rendering because high-energy specular paths occupy only a small region of path space, making them difficult to sample effectively. Recent work such as Specular Manifold Sampling …
doi PDF Video Image Viewer
Sample Space Partitioning and Spatiotemporal Resampling for Specular Manifold Sampling

ReSTIR PG: Path Guiding with Spatiotemporally Resampled Paths

SIGGRAPH Asia (Conference Track), 2025

We present ReSTIR Path Guiding (ReSTIR-PG), a real-time method that extracts guiding distributions from resampled paths produced by ReSTIR and uses them to generate improved initial candidates for the next frame. While ReSTIR significantly reduces …
doi PDF Video
ReSTIR PG: Path Guiding with Spatiotemporally Resampled Paths

Practical Gaussian Process Implicit Surfaces with Sparse Convolutions

ACM Transactions on Graphics (SIGGRAPH Asia), 2025

Project doi PDF
Practical Gaussian Process Implicit Surfaces with Sparse Convolutions

Harmonic caching for walk on spheres

ACM Transactions on Graphics (SIGGRAPH Asia), 2025

Project doi PDF
Harmonic caching for walk on spheres

Unbiased Differential Visibility Using Fixed-Step Walk-on-Spherical-Caps and Closest Silhouettes

ACM Transactions on Graphics (SIGGRAPH), 2025

Computing derivatives of path integrals under evolving scene geometry is a fundamental problem in physics-based differentiable rendering, which requires differentiating discontinuities in the visibility function. Warped-area reparameterization is a …
doi PDF
Unbiased Differential Visibility Using Fixed-Step Walk-on-Spherical-Caps and Closest Silhouettes

Reservoir Splatting for Temporal Path Resampling and Motion Blur

SIGGRAPH (Conference Track), 2025

Recent extensions to spatiotemporal path reuse, or ReSTIR, improve rendering efficiency in the presence of high-frequency content by augmenting path reservoirs to represent contributions over full pixel footprints. Still, if historical paths fail to …
doi PDF Supplementary Code Video Image Viewer
Reservoir Splatting for Temporal Path Resampling and Motion Blur

An Introduction to Neural Shading

ACM SIGGRAPH Courses, 2025

Neural shading offers a new paradigm for real-time graphics, replacing hand-crafted algorithms with compact neural networks that can be trained to reproduce complex appearance. In this three-hour course, we introduce the core principles behind neural …
Videos Slides Code
An Introduction to Neural Shading

Radiance Surfaces: Optimizing Surface Representations with a 5D Radiance Field Loss

ACM Transactions on Graphics (SIGGRAPH), 2025

We present a fast and simple technique to convert images into a radiance surface-based scene representation. Building on existing radiance volume reconstruction algorithms, we introduce a subtle yet impactful modification of the loss function …
Project doi PDF
Radiance Surfaces: Optimizing Surface Representations with a 5D Radiance Field Loss

Generative Detail Enhancement for Physically Based Materials

ACM Transactions on Graphics (SIGGRAPH), 2025

We present a tool for enhancing the detail of physically based materials using an off-the-shelf diffusion model and inverse rendering. Our goal is to increase the visual fidelity of existing materials by adding, for instance, signs of wear, aging, …
Project doi PDF
Generative Detail Enhancement for Physically Based Materials

Collaborative Texture Filtering

ACM/EG Symposium on High Performance Graphics (HPG), 2025

Recent advances in texture compression provide major improvements in compression ratios, but cannot use the GPU’s texture units for decompression and filtering. This has led to the development of stochastic texture filtering (STF) techniques to …
PDF Video1 Video2
Collaborative Texture Filtering

VideoMat: Extracting PBR Materials from Video Diffusion Models

Computer Graphics Forum, 2025

We leverage finetuned video diffusion models, intrinsic decomposition of videos, and physically-based differentiable rendering to generate high quality materials for 3D models given a text prompt or a single image. We condition a video diffusion …
Project doi PDF
VideoMat: Extracting PBR Materials from Video Diffusion Models

ReSTIR BDPT: Bidirectional ReSTIR Path Tracing with Caustics

ACM Transactions on Graphics (ToG), 2025

Recent spatiotemporal resampling algorithms (ReSTIR) accelerate real-time path tracing by reusing samples between pixels and frames. However, existing methods are limited by the sampling quality of path tracing, making them inefficient for scenes …
doi PDF Supplementary Code
ReSTIR BDPT: Bidirectional ReSTIR Path Tracing with Caustics

DiffusionRenderer: Neural Inverse and Forward Rendering with Video Diffusion Models

IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2025

Understanding and modeling lighting effects are fundamental tasks in computer vision and graphics. Classic physically-based rendering (PBR) accurately simulates the light transport, but relies on precise scene representations–explicit 3D …
Project PDF
DiffusionRenderer: Neural Inverse and Forward Rendering with Video Diffusion Models

Many-Light Rendering Using ReSTIR-Sampled Shadow Maps

Computer Graphics Forum (Eurographics), 2025

We present a practical method targeting dynamic shadow maps for many light sources in real-time rendering. We compute full-resolution shadow maps for a subset of lights, which we select with spatiotemporal reservoir resampling (ReSTIR). Our selection …
doi PDF Video
Many-Light Rendering Using ReSTIR-Sampled Shadow Maps

Improved Stochastic Texture Filtering Through Sample Reuse

ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (I3D), 2025

Stochastic texture filtering (STF) has re-emerged as a technique that can bring down the cost of texture filtering of advanced texture compression methods, e.g., neural texture compression. However, during texture magnification, the swapped order of …
arXiv PDF Video Supplemental
Improved Stochastic Texture Filtering Through Sample Reuse

GPU Friendly Laplacian Texture Blending

Journal of Computer Graphics Techniques, 2025

Texture and material blending is one of the leading methods for adding variety to rendered virtual worlds, creating composite materials, and generating procedural content. When done naively, it can introduce either visible seams or contrast loss, …
PDF Code
GPU Friendly Laplacian Texture Blending

Appearance Modeling of Iridescent Feathers with Diverse Nanostructures

ACM Transactions on Graphics (SIGGRAPH Asia), 2024
🏆 Best Paper

Project doi PDF
Appearance Modeling of Iridescent Feathers with Diverse Nanostructures

A Generalized Ray Formulation For Wave-Optical Light Transport

ACM Transactions on Graphics (SIGGRAPH Asia), 2024

Project doi PDF
A Generalized Ray Formulation For Wave-Optical Light Transport

Edify 3D: Scalable High-Quality 3D Asset Generation

ArXiv Preprint, 2024

We introduce Edify 3D, an advanced solution designed for high-quality 3D asset generation. Our method first synthesizes RGB and surface normal images of the described object at multiple viewpoints using a diffusion model. The multi-view observations …
Project arXiv PDF
Edify 3D: Scalable High-Quality 3D Asset Generation

A Free-Space Diffraction BSDF

ACM Transactions on Graphics (SIGGRAPH), 2024

Free-space diffractions are an optical phenomenon where light appears to “bend” around the geometric edges and corners of scene objects. In this paper we present an efficient method to simulate such effects. We derive an edge-based …
doi PDF Pdf-lowres Supplementary Github Video
A Free-Space Diffraction BSDF

VMF Diffuse: A unified rough diffuse BRDF

Computer Graphics Forum, 2024

Project doi PDF
VMF Diffuse: A unified rough diffuse BRDF

From microfacets to participating media: A unified theory of light transport with stochastic geometry

ACM Transactions on Graphics (SIGGRAPH), 2024
🏆 Best Paper

Project doi PDF
From microfacets to participating media: A unified theory of light transport with stochastic geometry

Area ReSTIR: Resampling for Real-Time Defocus and Antialiasing

ACM Transactions on Graphics (SIGGRAPH), 2024

Recent advancements in spatiotemporal reservoir resampling (ReSTIR) leverage sample reuse from neighbors to efficiently evaluate the path integral. Like rasterization, ReSTIR methods implicitly assume a pinhole camera and evaluate the light arriving …
doi PDF Brief Summary Video Submission Video Image Viewer
Area ReSTIR: Resampling for Real-Time Defocus and Antialiasing

Real-Time Neural Appearance Models

ACM Transactions on Graphics (ToG), 2024

We present a complete system for real-time rendering of scenes with complex appearance previously reserved for offline use. This is achieved with a combination of algorithmic and system level innovations.Our appearance model utilizes learned …
Project doi PDF
Real-Time Neural Appearance Models

Filtering After Shading with Stochastic Texture Filtering

ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (I3D), 2024
🏆 Best Paper

2D texture maps and 3D voxel arrays are widely used to add rich detail to the surfaces and volumes of rendered scenes, and filtered texture lookups are integral to producing high-quality imagery. We show that applying the texture filter after …
PDF Video Slides Supplementary Shadertoy-1 Shadertoy-2 Talk
Filtering After Shading with Stochastic Texture Filtering

Evaluating and Improving Rendered Visual Experiences

PhD dissertation from Centre for Mathematical Sciences, Lund University, 2024

Rendered imagery is presented to us daily. Special effects in movies, video games, scientific visualizations, and marketing catalogs all often rely on images generated through computer graphics. However, with all the possibilities that rendering …
PDF Project
Evaluating and Improving Rendered Visual Experiences

Estimates of Temporal Edge Detection Filters in Human Vision

ACM Transactions on Applied Perception (TAP), 2024

Edge detection is an important process in human visual processing. However, as far as we know, few attempts have been made to map the temporal edge detection filters in human vision. To that end, we devised a user study and collected data from which …
doi PDF Code Video
Estimates of Temporal Edge Detection Filters in Human Vision

Decorrelating ReSTIR Samplers via MCMC Mutations

ACM Transactions on Graphics (ToG), 2024

Monte Carlo rendering algorithms often utilize correlations between pixels to improve efficiency and enhance image quality. For real-time applications in particular, repeated reservoir resampling offers a powerful framework to reuse samples both …
doi PDF Supplementary
Decorrelating ReSTIR Samplers via MCMC Mutations

SLANG.D: Fast, Modular and Differentiable Shader Programming

ACM Transactions on Graphics (SIGGRAPH Asia), 2023

We introduce SLANG.D, a shading language that incorporates first-class automatic differentiation support derived from the Slang language. The new shading language allows us to transform a Direct3D-based path tracer to be fully differentiable with …
doi PDF Presentation Github
SLANG.D: Fast, Modular and Differentiable Shader Programming

Conditional Resampled Importance Sampling and ReSTIR

SIGGRAPH Asia (Conference Track), 2023

Recent work on generalized resampled importance sampling (GRIS) enables importance-sampled Monte Carlo integration with random variable weights replacing the usual division by probability density. This enables very flexible spatiotemporal sample …
doi PDF Video Supplementary Presentation Prototype
Conditional Resampled Importance Sampling and ReSTIR

ART-Owen Scrambling

ACM Transactions on Graphics (SIGGRAPH Asia), 2023

We present a novel algorithm for implementing Owen-scrambling,combining the generation and distribution of the scrambling bits in a single self-contained compact process. We employ a context-free grammar to build a binary tree of symbols, and equip …
doi PDF
ART-Owen Scrambling

Amortizing Samples in Physics-Based Inverse Rendering using ReSTIR

ACM Transactions on Graphics (SIGGRAPH Asia), 2023

Recently, great progress has been made in physics-based differentiable rendering. Existing differentiable rendering techniques typically focus on static scenes, but during inverse rendering—a key application for differentiable …
doi PDF Supplementary
Amortizing Samples in Physics-Based Inverse Rendering using ReSTIR

MesoGAN: Generative Neural Reflectance Shells

Computer Graphics Forum, 2023

We introduce MesoGAN, a model for generative 3D neural textures. This new graphics primitive represents mesoscale appearance by combining the strengths of generative adversarial networks (StyleGAN) and volumetric neural field rendering. The primitive …
doi PDF Project
MesoGAN: Generative Neural Reflectance Shells

Path tracing in Production: The Path of Water

ACM SIGGRAPH Courses, 2023

doi PDF
Path tracing in Production: The Path of Water

Flexible Isosurface Extraction for Gradient-Based Mesh Optimization

ACM Transactions on Graphics (SIGGRAPH), 2023

This work considers gradient-based mesh optimization, where we iteratively optimize for a 3D surface mesh by representing it as the isosurface of a scalar field, an increasingly common paradigm in applications including photogrammetry, generative …
Project doi PDF
Flexible Isosurface Extraction for Gradient-Based Mesh Optimization

A Gentle Introduction to ReSTIR: Path Reuse in Real-time

ACM SIGGRAPH Courses, 2023

A course gently introducing the basics of Monte Carlo integration, resampling, RIS, ReSTIR, and rendering applications of ReSTIR.
Project doi
A Gentle Introduction to ReSTIR: Path Reuse in Real-time

Recursive Control Variates for Inverse Rendering

ACM Transactions on Graphics (SIGGRAPH), 2023

We present a method for reducing errors—variance and bias—in physically based differentiable rendering (PBDR). Typical applications of PBDR repeatedly render a scene as part of an optimization loop involving gradient descent. The actual …
doi PDF Code Results
Recursive Control Variates for Inverse Rendering

Ray-aligned Occupancy Map Array for Fast Approximate Ray Tracing

Eurographics Symposium on Rendering, 2023

We present a new software ray tracing solution that efficiently computes visibilities in dynamic scenes. We first introduce a novel scene representation: ray-aligned occupancy map array (ROMA) that is generated by rasterizing the dynamic scene once …
doi PDF Video Slides
Ray-aligned Occupancy Map Array for Fast Approximate Ray Tracing

Random-Access Neural Compression of Material Textures

SIGGRAPH (Conference Track), 2023
🏆 Honorable Mention

The continuous advancement of photorealism in rendering is accompanied by a growth in texture data and, consequently, increasing storage and memory demands. To address this issue, we propose a novel neural compression technique specifically designed …
Project doi
Random-Access Neural Compression of Material Textures

Microfacet theory for non-uniform heightfields

SIGGRAPH (Conference Track), 2023

We propose new methods for combining NDFs in microfacet theory, enabling a wider range of surface statistics. The new BSDFs that follow allow for independent adjustment of appearance at grazing angles, and can’t be represented by linear blends …
Project doi PDF
Microfacet theory for non-uniform heightfields

Inverse Global Illumination Using a Neural Radiometric Prior

SIGGRAPH (Conference Track), 2023

Inverse rendering methods that account for global illumination are becoming more popular, but current methods require evaluating and automatically differentiating millions of path integrals by tracing multiple light bounces, which remains expensive …
doi PDF Video
Inverse Global Illumination Using a Neural Radiometric Prior

A Practical and Hierarchical Yarn-based Shading Model for Cloth

Computer Graphics Forum, 2023
🏆 Best Paper

doi PDF
A Practical and Hierarchical Yarn-based Shading Model for Cloth

Neural Fields meet Explicit Geometric Representations for Inverse Rendering of Urban Scenes

IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2023

Reconstruction and intrinsic decomposition of scenes from captured imagery would enable many applications such as relighting and virtual object insertion. Recent NeRF based methods achieve impressive fidelity of 3D reconstruction, but bake the …
Project doi PDF
Neural Fields meet Explicit Geometric Representations for Inverse Rendering of Urban Scenes

Fast Procedural Noise by Monte Carlo Sampling

Eurographics Symposium on Rendering, 2023

Procedural noise functions are widely used in computer graphics as a way to add texture detail to surfaces and volumes. Many noise functions are based on weighted sums that can be expressed in terms of random variables, which makes it possible to …
doi PDF
Fast Procedural Noise by Monte Carlo Sampling

Tight Bounding Boxes for Voxels and Bricks in a Signed Distance Field Ray Tracer

Eurographics (Short Papers), 2023

We present simple methods to compute tight axis-aligned bounding boxes for voxels and for bricks of voxels in a signed distance function renderer based on ray tracing. Our results show total frame time reductions of 20-31% in a real-time path tracer.
Project doi PDF
Tight Bounding Boxes for Voxels and Bricks in a Signed Distance Field Ray Tracer

Luminance-Preserving and Temporally Stable Daltonization

Eurographics (Short Papers), 2023

We propose a novel, real-time algorithm for recoloring images to improve the experience for a color vision deficient observer. The output is temporally stable and preserves luminance, the most important visual cue. It runs in 0.2 ms per frame on a …
doi PDF Supplementary Video Presentation
Luminance-Preserving and Temporally Stable Daltonization

Physically Based Rendering: From Theory to Implementation, 4th Ed.

Book from MIT Press, 2023

Project
Physically Based Rendering: From Theory to Implementation, 4th Ed.

Joint Neural Denoising of Surfaces and Volumes

ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (I3D), 2023
🏆 Best Presentation

We combine state-of-the-art techniques into a system for high-quality, interactive rendering of participating media. We leverage unbiased volume path tracing with multiple scattering, temporally stable neural denoising and NanoVDB, a fast, sparse …
doi PDF Video Supplementary
Joint Neural Denoising of Surfaces and Volumes

Shape, Light, and Material Decomposition from Images using Monte Carlo Rendering and Denoising

Advances in Neural Information Processing Systems (NeurIPS), 2022

Recent advances in differentiable rendering have enabled high-quality reconstruction of 3D scenes from multi-view images. Most methods rely on simple rendering algorithms: pre-filtered direct lighting or learned representations of irradiance. We show …
Project PDF
Shape, Light, and Material Decomposition from Images using Monte Carlo Rendering and Denoising

Lightweight Neural Basis Functions for All-Frequency Shading

SIGGRAPH Asia (Conference Track), 2022

Basis functions provide both the abilities for compact representation and the properties for efficient computation. Therefore, they are pervasively used in rendering to perform all-frequency shading. However, common basis functions, including …
doi PDF Video Supplementary
Lightweight Neural Basis Functions for All-Frequency Shading

Ray Tracing of Signed Distance Function Grids

Journal of Computer Graphics Techniques, 2022

We evaluate the performance of a wide set of combinations of traversal and voxel intersection testing of signed distance function grids in a path tracing setting. In addition, we present an optimized way to compute the intersection between a ray and …
Project PDF
Ray Tracing of Signed Distance Function Grids

The Falcor Rendering Framework

BSD-Licensed Github Repository, 2022

Github

Generalized Resampled Importance Sampling: Foundations of ReSTIR

ACM Transactions on Graphics (SIGGRAPH), 2022

As scenes become ever more complex and real-time applications embrace ray tracing, path sampling algorithms that maximize quality at low sample counts become vital. Recent resampling algorithms building on Talbot et al.’s [2005] resampled importance …
doi PDF Video Presentation Supplementary Code
Generalized Resampled Importance Sampling: Foundations of ReSTIR

Unbiased and consistent rendering using biased estimators

ACM Transactions on Graphics (ToG), 2022

We introduce a general framework for transforming biased estimators into unbiased and consistent estimators for the same quantity. We show how several existing unbiased and consistent estimation strategies in rendering are special cases of this …
doi PDF Project
Unbiased and consistent rendering using biased estimators

Spatiotemporal Blue Noise Masks

Eurographics Symposium on Rendering, 2022

Blue noise error patterns are well suited to human perception, and when applied to stochastic rendering techniques, blue noise masks can minimize unwanted low-frequency noise in the final image. Current methods of applying different blue noise masks …
Project doi PDF
Spatiotemporal Blue Noise Masks

Real-Time Path Tracing and Beyond

Keynote, High Performance Graphics, 2022

Real-time graphics is on the cusp of a historic transition to path tracing. With recent advances in hardware ray tracing, systems research, stochastic light sampling, and denoising, we show that complex light transport effects can be path traced in …
Video Slides
Real-Time Path Tracing and Beyond

Practical Aspects of Spectral Data in Digital Content Production

ACM SIGGRAPH Courses, 2022

Project doi PDF
Practical Aspects of Spectral Data in Digital Content Production

A Position-Free Path Integral for Homogeneous Slabs and Multiple Scattering on Smith Microfacets

Computer Graphics Forum, 2022

We consider the problem of multiple scattering on Smith microfacets. This problem is equivalent to computing volumetric light transport in a homogeneous slab. Although the symmetry of the slab allows for significant simplification, fully analytic …
doi PDF
A Position-Free Path Integral for Homogeneous Slabs and Multiple Scattering on Smith Microfacets

A bidirectional formulation for Walk on Spheres

Computer Graphics Forum, 2022

Numerically solving partial differential equations (PDEs) is central to many applications in computer graphics and scientific modeling. Conventional methods for solving PDEs often need to discretize the space first, making them less efficient for …
doi PDF Project
A bidirectional formulation for Walk on Spheres

Once-more Scattered Next Event Estimation for Volume Rendering

Computer Graphics Forum, 2022

doi PDF
Once-more Scattered Next Event Estimation for Volume Rendering

Extracting Triangular 3D Models, Materials, and Lighting From Images

IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2022

We present an efficient method for joint optimization of topology, materials and lighting from multi-view image observations. Unlike recent multi-view reconstruction approaches, which typically produce entangled 3D representations encoded in neural …
Project doi PDF
Extracting Triangular 3D Models, Materials, and Lighting From Images

Slang Shading Language Advances

Youtube, 2022

Video Slides
Slang Shading Language Advances

Research Advances Toward Real-Time Path Tracing

Game Developers Conference (GDC), 2022

Real-time graphics is on the cusp of a historic transition to path tracing, one of the largest breakthroughs for real-time graphics in many years. Path tracing is the most accurate way of rendering but is also computationally intensive due to the …
Slides
Research Advances Toward Real-Time Path Tracing

NeRF-Tex: Neural Reflectance Field Textures

Computer Graphics Forum, 2022

Abstract We investigate the use of neural fields for modelling diverse mesoscale structures, such as fur, fabric and grass. Instead of using classical graphics primitives to model the structure, we propose to employ a versatile volumetric primitive …
doi PDF Video
NeRF-Tex: Neural Reflectance Field Textures

Scalar Spatiotemporal Blue Noise Masks

ArXiv Preprint, 2021

Blue noise error patterns are well suited to human perception, and when applied to stochastic rendering techniques, blue noise masks (blue noise textures) minimize unwanted low-frequency noise in the final image. Current methods of applying blue …
Project arXiv PDF
Scalar Spatiotemporal Blue Noise Masks

Fast Volume Rendering with Spatiotemporal Reservoir Resampling

ACM Transactions on Graphics (SIGGRAPH Asia), 2021

Volume rendering under complex, dynamic lighting is challenging, especially if targeting real-time. To address this challenge, we extend a recent direct illumination sampling technique, spatiotemporal reservoir resampling, to multi-dimensional path …
Project doi PDF
Fast Volume Rendering with Spatiotemporal Reservoir Resampling

Differentiable Time-Gated Rendering

ACM Transactions on Graphics (SIGGRAPH Asia), 2021

The continued advancements of time-of-flight imaging devices have enabled new imaging pipelines with numerous applications. Consequently, several forward rendering techniques capable of accurately and efficiently simulating these devices have been …
doi PDF Presentation Supplementary Slides Code
Differentiable Time-Gated Rendering

Weighted Reservoir Sampling: Randomly Sampling Streams

Ray Tracing Gems II, 2021

Reservoir sampling is a family of algorithms that, given a stream of N elements, randomly select a K-element subset in a single pass. Usually, K is defined as a small constant, but N need not be known in advance.
doi PDF
Weighted Reservoir Sampling: Randomly Sampling Streams

Visualizing and Communicating Errors in Rendered Images

Ray Tracing Gems II, 2021

In rendering research and development, it is important to have a formalized way of visualizing and communicating how and where errors occur when rendering with a given algorithm. Such evaluation is often done by comparing the test image to a …
doi PDF Github
Visualizing and Communicating Errors in Rendered Images

The Alias Method for Sampling Discrete Distributions

Ray Tracing Gems II, 2021

The alias method is a well-known algorithm for constant-time sampling from arbitrary, discrete probability distributions that relies on a simple precomputed lookup table. We found many have never learned about this method, so we briefly introduce the …
doi PDF
The Alias Method for Sampling Discrete Distributions

Rendering Many Lights with Grid-Based Reservoirs

Ray Tracing Gems II, 2021

Efficient rendering of scenes with many lights is a longstanding problem in graphics. Sampling a light to shade from the pool of all lights, e.g., using next event estimation, is a nontrivial task. Sampling must be computationally efficient, must …
doi PDF
Rendering Many Lights with Grid-Based Reservoirs

Refraction Ray Cones for Texture Level of Detail

Ray Tracing Gems II, 2021

Texture filtering is an important implementation detail of every rendering system. Its purpose is to achieve high-quality rendering of textured surfaces, while avoiding artifacts, such as aliasing, Moire patterns, and unnecessary overblur. In this …
Project doi PDF
Refraction Ray Cones for Texture Level of Detail

Differential Barycentric Coordinates

Ray Tracing Gems II, 2021

We describe an optimized way to compute differential barycentric coordinates, which can be employed by implementations of ray differentials. This technique can be used for texture fltering computations for ray tracing.
Project doi PDF
Differential Barycentric Coordinates

An Unbiased Ray-Marching Transmittance Estimator

ACM Transactions on Graphics (SIGGRAPH), 2021

We present an in-depth analysis of the sources of variance in state-of-the-art unbiased volumetric transmittance estimators, and propose several new methods for improving their efficiency. These combine to produce a single estimator that is …
Project doi PDF
An Unbiased Ray-Marching Transmittance Estimator

Rearchitecting Spatiotemporal Resampling for Production

ACM/EG Symposium on High Performance Graphics (HPG), 2021

Recent work by Bitterli et al. introduced a real-time, many-light algorithm for rendering dynamic direct illumination from millions of lights by iteratively applying resampled importance sampling using weighted reservoir sampling. While enabling new …
doi PDF Video
Rearchitecting Spatiotemporal Resampling for Production

Real-Time Neural Radiance Caching for Path Tracing

ACM Transactions on Graphics (SIGGRAPH), 2021

We present a real-time neural radiance caching method for path-traced global illumination. Our system is designed to handle fully dynamic scenes, and makes no assumptions about the lighting, geometry, and materials. The data-driven nature of our …
doi PDF Video Results
Real-Time Neural Radiance Caching for Path Tracing

Neural Scene Graph Rendering

ACM Transactions on Graphics (SIGGRAPH), 2021

We present a neural scene graph—a modular and controllable representation of scenes with elements that are learned from data. We focus on the forward rendering problem, where the scene graph is provided by the user and references learned …
doi PDF Video Supplementary
Neural Scene Graph Rendering

Zero-variance Transmittance Estimation

Eurographics Symposium on Rendering, 2021

We apply zero-variance theory to the Volterra integral formulation of volumetric transmittance. We solve for the guided sampling decisions in this framework that produce zero-variance ratio tracking and next-flight ratio tracking estimators. In both …
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Zero-variance Transmittance Estimation

Vectorization for Fast, Analytic, and Differentiable Visibility

ACM Transactions on Graphics (ToG), 2021

In Computer Graphics, the two main approaches to rendering and visibility involve ray tracing and rasterization. However, a limitation of both approaches is that they essentially use point sampling. This is the source of noise and aliasing, and also …
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Vectorization for Fast, Analytic, and Differentiable Visibility

ReSTIR GI: Path Resampling for Real-Time Path Tracing

ACM/EG Symposium on High Performance Graphics (HPG), 2021

Even with the advent of hardware-accelerated ray tracing in modern GPUs, only a small number of rays can be traced at each pixel in real-time applications. This presents a significant challenge for path tracing, even when augmented with state-of-the …
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ReSTIR GI: Path Resampling for Real-Time Path Tracing

Visualizing Errors in Rendered High Dynamic Range Images

Eurographics (Short Papers), 2021

A new error metric targeting rendered high dynamic range images is presented. Our method computes a composite visualization over a number of low dynamic range error maps of exposure compensated and tone mapped image pairs with automatically computed, …
doi PDF Supplemental Video Github
Visualizing Errors in Rendered High Dynamic Range Images

Appearance-Driven Automatic 3D Model Simplification

Eurographics Symposium on Rendering, 2021

We present a suite of techniques for jointly optimizing triangle meshes and shading models to match the appearance of reference scenes. This capability has a number of uses, including appearance-preserving simplification of extremely complex assets, …
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Appearance-Driven Automatic 3D Model Simplification

Interactive Path Tracing and Reconstruction of Sparse Volumes

ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (I3D), 2021
🏆 Best Paper Presentation

Denoisers designed for surface geometry rely on noise-free feature guides for high quality results. However, these guides are not readily available for volumes. Our method enables combined volume and surface denoising in real time from low sample …
doi PDF Video
Interactive Path Tracing and Reconstruction of Sparse Volumes

Improved Shader and Texture Level of Detail Using Ray Cones

Journal of Computer Graphics Techniques, 2021

In real-time ray tracing, texture filtering is an important technique to increase image quality. Current games, such as Minecraft with RTX on Windows 10, use ray cones to determine texture-filtering footprints. In this paper, we present several …
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Improved Shader and Texture Level of Detail Using Ray Cones

Neural Control Variates

ACM Transactions on Graphics (SIGGRAPH Asia), 2020

We propose neural control variates (NCV) for unbiased variance reduction in parametric Monte Carlo integration. So far, the core challenge of applying the method of control variates has been finding a good approximation of the integrand that is cheap …
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Neural Control Variates

Glossy Probe Reprojection for Interactive Global Illumination

ACM Transactions on Graphics (SIGGRAPH Asia), 2020

Recent rendering advances dramatically reduce the cost of global illumination. But even with hardware acceleration, complex light paths with multiple glossy interactions are still expensive; our new algorithm stores these paths in precomputed light …
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Glossy Probe Reprojection for Interactive Global Illumination

Compositional Neural Scene Representations for Shading Inference

ACM Transactions on Graphics (SIGGRAPH), 2020

We present a technique for adaptively partitioning neural scene representations. Our method disentangles lighting, material, and geometric information yielding a scene representation that preserves the orthogonality of these components, improves …
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Compositional Neural Scene Representations for Shading Inference

Spatiotemporal Reservoir Resampling for Real-time Ray Tracing with Dynamic Direct Lighting

ACM Transactions on Graphics (SIGGRAPH), 2020

Efficiently rendering direct lighting from millions of dynamic light sources using Monte Carlo integration remains a challenging problem, even for off-line rendering systems. We introduce a new algorithm—ReSTIR—that renders such lighting …
doi PDF Video Presentation Supplementary Promotional video
Spatiotemporal Reservoir Resampling for Real-time Ray Tracing with Dynamic Direct Lighting

ꟻLIP: A Difference Evaluator for Alternating Images

Symposium on High Performance Graphics (Proc. ACM Comput. Graph. Interact. Tech.), 2020
🏆 3rd Best Paper

Image quality measures are becoming increasingly important in the field of computer graphics. For example, there is currently a major focus on generating photorealistic images in real time by combining path tracing with denoising, for which such …
doi PDF Supplemental Video Github Project
ꟻLIP: A Difference Evaluator for Alternating Images

A Survey of Temporal Antialiasing Techniques

Computer Graphics Forum, 2020

Abstract Temporal Antialiasing (TAA), formally defined as temporally-amortized supersampling, is the most widely used antialiasing technique in today’s real-time renderers and game engines. This survey provides a systematic overview of this …
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A Survey of Temporal Antialiasing Techniques

Understanding SSIM

ArXiv Preprint, 2020

The use of the structural similarity index (SSIM) is widespread. For almost two decades, it has played a major role in image quality assessment in many different research disciplines. Clearly, its merits are indisputable in the research community. …
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Understanding SSIM

Practical Product Sampling by Fitting and Composing Warps

Eurographics Symposium on Rendering, 2020

We introduce a Monte Carlo importance sampling method for integrands composed of products and show its application to rendering where direct sampling of the product is often difficult. Our method is based on warp functions that operate on the primary …
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Practical Product Sampling by Fitting and Composing Warps

Neural Denoising with Layer Embeddings

Computer Graphics Forum, 2020

We propose a novel approach for denoising Monte Carlo path traced images, which uses data from individual samples rather than relying on pixel aggregates. Samples are partitioned into layers, which are filtered separately, giving the network more …
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Neural Denoising with Layer Embeddings

Neural Temporal Adaptive Sampling and Denoising

Computer Graphics Forum, 2020

Despite recent advances in Monte Carlo path tracing at interactive rates, denoised image sequences generated with few samples per-pixel often yield temporally unstable results and loss of high-frequency details. We present a novel adaptive rendering …
doi PDF Video
Neural Temporal Adaptive Sampling and Denoising

Ray Tracing Gems

Book from APress, 2019

Project
Ray Tracing Gems

Temporally Dense Ray Tracing

ACM/EG Symposium on High Performance Graphics (HPG; Short Papers), 2019

We present a technique for real-time ray tracing with the goal of reaching 240 frames per second or more. The core idea is to trade spatial resolution for faster temporal updates in such a way that the display and human visual system aid in …
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Temporally Dense Ray Tracing

Introduction to Real-Time Ray Tracing

ACM SIGGRAPH Courses, 2019

Project doi
Introduction to Real-Time Ray Tracing

Dynamic Many-Light Sampling for Real-Time Ray Tracing

ACM/EG Symposium on High Performance Graphics (HPG), 2019

Monte Carlo ray tracing offers the capability of rendering scenes with large numbers of area light sources-lights can be sampled stochastically and shadowing can be accounted for by tracing rays, rather than using shadow maps or other …
doi PDF
Dynamic Many-Light Sampling for Real-Time Ray Tracing

What is a Ray?

Ray Tracing Gems, 2019

We define a ray, show how to use ray intervals, and demonstrate how to specify a ray using DirectX Raytracing (DXR).
Project doi
What is a Ray?

Texture Level of Detail Strategies for Real-Time Ray Tracing

Ray Tracing Gems, 2019

Unlike rasterization, where one can rely on pixel quad partial derivatives, an alternative approach must be taken for filtered texturing during ray tracing. We describe two methods for computing texture level of detail for ray tracing. The first …
Project doi
Texture Level of Detail Strategies for Real-Time Ray Tracing

Simple Environment Map Filtering Using Ray Cones and Ray Differentials

Ray Tracing Gems, 2019

We describe simple methods for how to filter environment maps using ray cones and ray differentials in a ray tracing engine.
Project doi
Simple Environment Map Filtering Using Ray Cones and Ray Differentials

Precision Improvements for Ray/Sphere Intersection

Ray Tracing Gems, 2019

The traditional quadratic formula is often presented as the way to compute the intersection of a ray with a sphere. While mathematically correct, this factorization can be numerically unstable when using floating-point arithmetic. We give two …
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Precision Improvements for Ray/Sphere Intersection

Immersive Linear Algebra

Book from Free online, interactive book, 2019

Project
Immersive Linear Algebra

Sample Transformations Zoo

Ray Tracing Gems, 2019

We present several formulas and methods for generating samples distributed according to a desired probability density function on a specific domain. Sampling is a fundamental operation in modern rendering, both at runtime and in preprocessing. It is …
doi PDF
Sample Transformations Zoo

Introduction to DirectX Raytracing

Ray Tracing Gems, 2019

Modern graphics APIs such as DirectX 12 expose low-level hardware access and control to developers, often resulting in complex and verbose code that can be intimidating for novices. In this chapter, we hope to demystify the steps to set up and use …
doi PDF
Introduction to DirectX Raytracing

Improved Alpha Testing Using Hashed Sampling

IEEE Transactions on Visualization and Computer Graphics (TVCG), 2019

We further describe and analyze the idea of hashed alpha testing from Wyman and McGuire, which builds on stochastic alpha testing and simplifies stochastic transparency. Typically, alpha testing provides a simple mechanism to mask out complex …
doi PDF
Improved Alpha Testing Using Hashed Sampling

Importance Sampling of Many Lights on the GPU

Ray Tracing Gems, 2019

The introduction of standardized APIs for ray tracing, together with hardware acceleration, opens up possibilities for physically based lighting in real-time rendering. Light importance sampling is one of the fundamental operations in light transport …
doi PDF
Importance Sampling of Many Lights on the GPU

Efficient Generation of Points that Satisfy Two-Dimensional Elementary Intervals

Journal of Computer Graphics Techniques, 2019

Precomputing high-quality sample points has been shown to be a useful technique for Monte Carlo integration in rendering; doing so allows optimizing properties of the points without the performance constraints of generating samples during rendering. …
PDF
Efficient Generation of Points that Satisfy Two-Dimensional Elementary Intervals

A Ray-Box Intersection Algorithm and Efficient Dynamic Voxel Rendering

Journal of Computer Graphics Techniques, 2018

We introduce a novel and efficient method for rendering large models composed of individually-oriented voxels. The core of this method is a new algorithm for computing the intersection point and normal of a 3D ray with an arbitrarily-oriented 3D box, …
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A Ray-Box Intersection Algorithm and Efficient Dynamic Voxel Rendering

Real-Time Rendering, 4th Ed.

Book from CRC Press, 2018

Project
Real-Time Rendering, 4th Ed.

Introduction to DirectX Ray Tracing

ACM SIGGRAPH Courses, 2018

Project doi
Introduction to DirectX Ray Tracing

Correlation-Aware Semi-Analytic Visibility for Antialiased Rendering

ACM/EG Symposium on High Performance Graphics (HPG), 2018

Geometric aliasing is a persistent challenge for real-time rendering. Hardware multisampling remains limited to 8x, analytic coverage fails to capture correlated visibility samples, and spatial and temporal postfiltering primarily target edges of …
doi PDF Project
Correlation-Aware Semi-Analytic Visibility for Antialiased Rendering

Noise2Noise: Learning image restoration without clean data

International Conference on Machine Learning (ICML), 2018

We apply basic statistical reasoning to signal reconstruction by machine learning — learning to map corrupted observations to clean signals — with a simple and powerful conclusion: under certain common circumstances, it is possible to learn to …
PDF
Noise2Noise: Learning image restoration without clean data

Spatiotemporal Variance-Guided Filtering: Real-time Reconstruction for Path Traced Global Illumination

ACM/EG Symposium on High Performance Graphics (HPG), 2017
🏆 Best Paper

We introduce a reconstruction algorithm that generates a temporally stable sequence of images from one path-per-pixel global illumination. To handle such noisy input, we use temporal accumulation to increase the effective sample count and …
doi PDF Video Code Project
Spatiotemporal Variance-Guided Filtering: Real-time Reconstruction for Path Traced Global Illumination

Interactive Stable Ray Tracing

ACM/EG Symposium on High Performance Graphics (HPG), 2017

Interactive ray tracing applications running on commodity hardware can suffer from objectionable temporal artifacts due to a low sample count. We introduce stable ray tracing, a technique that improves temporal stability without the over-blurring and …
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Interactive Stable Ray Tracing

Interactive Reconstruction of Monte Carlo Image Sequences Using a Recurrent Denoising Autoencoder

ACM Transactions on Graphics (SIGGRAPH), 2017

We describe a machine learning technique for reconstructing image sequences rendered using Monte Carlo methods. Our primary focus is on reconstruction of global illumination with extremely low sampling budgets at interactive rates. Motivated by …
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Interactive Reconstruction of Monte Carlo Image Sequences Using a Recurrent Denoising Autoencoder

Generating Stratified Random Lines in a Square

Journal of Computer Graphics Techniques, 2017

When generating a set of uniformly distributed lines through a square, some care is needed to avoid bias in line orientation and position. We present a compact algorithm to generate unbiased uniformly distributed lines from a uniform point set over …
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Generating Stratified Random Lines in a Square

Hashed Alpha Testing

ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (I3D), 2017

Renderers apply alpha testing to mask out complex silhouettes using alpha textures on simple proxy geometry. While widely used, alpha testing has a long-standing problem that is underreported in the literature, but observable in commercial games: …
doi PDF Video Slides
Hashed Alpha Testing

Towards Foveated Rendering for Gaze-Tracked Virtual Reality

ACM Transactions on Graphics (SIGGRAPH Asia), 2016

Foveated rendering synthesizes images with progressively less detail outside the eye fixation region, potentially unlocking significant speedups for wide field-of-view displays, such as head mounted displays, where target framerate and resolution is …
doi PDF Supplementary Project
Towards Foveated Rendering for Gaze-Tracked Virtual Reality

Frustum-Traced Irregular Z-Buffers: Fast, Sub-pixel Accurate Hard Shadows

IEEE Transactions on Visualization and Computer Graphics (TVCG), 2016

We further describe and analyze a real-time system for rendering antialiased hard shadows using irregular z-buffers (IZBs) that we first presented in Wyman et al.. We focus on identifying bottlenecks, exploring these from an algorithmic complexity …
doi PDF
Frustum-Traced Irregular Z-Buffers: Fast, Sub-pixel Accurate Hard Shadows

Perceptually-based Foveated Virtual Reality

ACM SIGGRAPH Emerging Technologies, 2016

doi

Exploring and Expanding the Contiuum of OIT Algorithms

ACM/EG Symposium on High Performance Graphics (HPG), 2016

Order independent transparency (OIT) proves challenging for modern rasterization-based renderers. Rendering without transparency can limit the quality of visual effects, so researchers have proposed various algorithms enabling and approximating OIT. …
doi PDF Slides
Exploring and Expanding the Contiuum of OIT Algorithms

CloudLight: A System for Amortizing Indirect Lighting in Real-Time Rendering

Journal of Computer Graphics Techniques, 2015

This paper describes the CloudLight system for computing indirect lighting asynchronously on an abstracted, computational “cloud,” in support of real-time rendering for interactive 3D applications on a local client device. We develop and …
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CloudLight: A System for Amortizing Indirect Lighting in Real-Time Rendering

The SGGX microflake distribution

ACM Transactions on Graphics (SIGGRAPH), 2015

We introduce the Symmetric GGX (SGGX) distribution to represent spatially-varying properties of anisotropic microflake participating media. Our key theoretical insight is to represent a microflake distribution by the projected area of the …
doi Project PDF
The SGGX microflake distribution

Decoupled Coverage Anti-Aliasing

ACM/EG Symposium on High Performance Graphics (HPG), 2015

State-of-the-art methods for geometric anti-aliasing in real-time rendering are based on Multi-Sample Anti-Aliasing (MSAA), which samples visibility more than shading to reduce the number of expensive shading calculations. However, for high-quality …
doi PDF Slides
Decoupled Coverage Anti-Aliasing

An Overview of Next-Generation Graphics APIs

ACM SIGGRAPH Courses, 2015

doi

Aggregate G-Buffer Anti-Aliasing

ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (I3D), 2015

We present Aggregate G-Buffer Anti-Aliasing (AGAA), a new technique for efficient anti-aliased deferred rendering of complex geometry using modern graphics hardware. In geometrically complex situations, where many surfaces intersect a pixel, current …
doi Project PDF Video Supplementary Presentation
Aggregate G-Buffer Anti-Aliasing

Frustum-Traced Raster Shadows: Revisiting Irregular Z-Buffers

ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (I3D), 2015
🏆 Best Paper

We present a real-time system that renders antialiased hard shadows using irregular z-buffers. For subpixel accuracy, we use 32 samples per pixel at roughly twice the cost of a single sample. Our system remains interactive on a variety of game assets …
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Frustum-Traced Raster Shadows: Revisiting Irregular Z-Buffers

Simple Analytic Approximations to the CIE XYZ Color Matching Functions

Journal of Computer Graphics Techniques, 2013

We provide three analytical fits to the CIE x, y, and z color matching curves, commonly used in predictive and spectral renderers as an intermediate between light spectra and RGB colors. Any can replace the standard CIE curves, which come tabulated. …
PDF Code
Simple Analytic Approximations to the CIE XYZ Color Matching Functions

Imperfect Voxelized Shadow Volumes

ACM/EG Symposium on High Performance Graphics (HPG), 2013

Voxelized shadow volumes provide a discretized view-dependent representation of shadow volumes, but are limited to point or directional lights. We extend them to allow dynamic volumetric visibility from area light sources using imperfect shadow …
doi PDF Video
Imperfect Voxelized Shadow Volumes

Octree-Based Sparse Voxelization Using The GPU Hardware Rasterizer

OpenGL Insights, 2012

Discrete voxel representations are generating growing interest in a wide range of applications in computational sciences and particularly in computer graphics. In this chapter, we first describe an efficient OpenGL implementation of a simple surface …
doi Project PDF
Octree-Based Sparse Voxelization Using The GPU Hardware Rasterizer

Interactive Indirect Illumination Using Voxel Cone Tracing

Computer Graphics Forum (Pacific Graphics), 2011

Indirect illumination is an important element for realistic image synthesis, but its computation is expensive and highly dependent on the complexity of the scene and of the BRDF of the involved surfaces. While off-line computation and pre-baking can …
doi PDF Project
Interactive Indirect Illumination Using Voxel Cone Tracing