Manifold path guiding for importance sampling specular chains

Z Fan, P Hong, J Guo, C Zou, Y Guo… - ACM Transactions on …, 2023 - dl.acm.org
Complex visual effects such as caustics are often produced by light paths containing
multiple consecutive specular vertices (dubbed specular chains), which pose a challenge to …

Unbiased caustics rendering guided by representative specular paths

H Li, B Wang, C Tu, K Xu, N Holzschuch… - SIGGRAPH Asia 2022 …, 2022 - dl.acm.org
Caustics are interesting patterns caused by the light being focused when reflecting off glossy
materials. Rendering them in computer graphics is still challenging: they correspond to high …

Efficient caustics rendering via spatial and temporal path reuse

X Xu, L Wang, B Wang - Computer Graphics Forum, 2023 - Wiley Online Library
Caustics are complex optical effects caused by the light being concentrated in a small area
due to reflection or refraction on surfaces with low roughness, typically under a sharp light …

BRDF importance sampling for polygonal lights

C Peters - ACM Transactions on Graphics (TOG), 2021 - dl.acm.org
With the advent of real-time ray tracing, there is an increasing interest in GPU-friendly
importance sampling techniques. We present such methods to sample convex polygonal …

Specular Polynomials

Z Fan, J Guo, Y Wang, T Xiao, H Zhang… - ACM Transactions on …, 2024 - dl.acm.org
Finding valid light paths that involve specular vertices in Monte Carlo rendering requires
solving many non-linear, transcendental equations in high-dimensional space. Existing …

Real-time geometric glint anti-aliasing with normal map filtering

X Chermain, S Lucas, B Sauvage, JM Dischler… - Proceedings of the …, 2021 - dl.acm.org
Real-time geometric specular anti-aliasing is required when using a low number of pixel
samples and high-frequency specular lobes. Several methods have been proposed for …

Neural Path Sampling for Rendering Pure Specular Light Transport

R Yu, Y Dong, Y Kong, X Tong - Computer Graphics Forum, 2024 - Wiley Online Library
Multi‐bounce, pure specular light paths produce complex lighting effects, such as caustics
and sparkle highlights, which are challenging to render due to their sparse and diverse …

Photon-Driven Manifold Sampling

F Lee, JW Jhang, CF Chang - Proceedings of the ACM on Computer …, 2024 - dl.acm.org
Complex lighting phenomenon such as the caustics often arises from specular chains of
varying lengths. Thanks to recent advancement in specular light transport, we are able to …

Interactive Calculation of Light Refraction and Caustics Using a Graphics Processor

SI Vyatkin, BS Dolgovesov - Programming and Computer Software, 2024 - Springer
While modern rendering systems are efficient for modeling complex light paths in complex
environments, the rendering of refractive caustics still takes a long time. Caustics are light …

Once‐more scattered next event estimation for volume rendering

J Hanika, A Weidlich, M Droske - Computer Graphics Forum, 2022 - Wiley Online Library
Abstract We present a Monte Carlo path tracing technique to sample extended next event
estimation contributions in participating media: we consider one additional scattering vertex …