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- research-articleAugust 2024
SAH-Optimized k-DOP Hierarchies for Ray Tracing
Proceedings of the ACM on Computer Graphics and Interactive Techniques (PACMCGIT), Volume 7, Issue 3Article No.: 32, Pages 1–16https://doi.org/10.1145/3675391We revisit the idea of using hierarchies of k-sided discrete orientation polytopes (k-DOPs) for ray tracing. We propose a method for building a k-DOP-based bounding volume hierarchy while optimizing its topology using the surface area heuristic. The key ...
- research-articleAugust 2024
DGF: A Dense, Hardware-Friendly Geometry Format for Lossily Compressing Meshlets with Arbitrary Topologies
Proceedings of the ACM on Computer Graphics and Interactive Techniques (PACMCGIT), Volume 7, Issue 3Article No.: 46, Pages 1–17https://doi.org/10.1145/3675383The widespread availability of hardware accelerated ray tracing solutions is driving a gradual sea-change in the real-time graphics space. The major graphics APIs now offer standardized support for accelerated ray tracing. In the same time frame, ...
- research-articleAugust 2024
Radiance Caching with On-Surface Caches for Real-Time Global Illumination
- Wolfgang Tatzgern,
- Alexander Weinrauch,
- Pascal Stadlbauer,
- Joerg H. Mueller,
- Martin Winter,
- Markus Steinberger
Proceedings of the ACM on Computer Graphics and Interactive Techniques (PACMCGIT), Volume 7, Issue 3Article No.: 38, Pages 1–17https://doi.org/10.1145/3675382Achieving global illumination is crucial for delivering realistic lighting in real-time rendering applications. Despite recent advancements in hardware ray tracing, the computational demands of full path tracing remain largely impractical for real-world ...
- research-articleAugust 2024
HIPRT: A Ray Tracing Framework in HIP
Proceedings of the ACM on Computer Graphics and Interactive Techniques (PACMCGIT), Volume 7, Issue 3Article No.: 44, Pages 1–18https://doi.org/10.1145/3675378We present HIPRT, an open-source ray tracing framework in HIP. HIPRT provides a versatile, cross-platform solution for professional rendering on contemporary many-core architectures. The core of the framework relies on the bounding volume hierarchy (BVH) ...
- research-articleAugust 2024Best Paper
H-PLOC: Hierarchical Parallel Locally-Ordered Clustering for Bounding Volume Hierarchy Construction
Proceedings of the ACM on Computer Graphics and Interactive Techniques (PACMCGIT), Volume 7, Issue 3Article No.: 30, Pages 1–14https://doi.org/10.1145/3675377We propose a novel GPU-oriented approach for constructing binary bounding volume hierarchies (BVHs) based on the parallel locally-ordered clustering (PLOC/PLOC++) algorithm. Compared to competing high-performance GPU BVH build algorithms (PLOC++ or ...
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- research-articleAugust 2024Best Paper
Real-Time Procedural Generation with GPU Work Graphs
Proceedings of the ACM on Computer Graphics and Interactive Techniques (PACMCGIT), Volume 7, Issue 3Article No.: 47, Pages 1–16https://doi.org/10.1145/3675376We present a system for real-time procedural generation that makes use of the novel GPU programming model, work graphs. The nodes of a work graph are shaders, which dynamically generate new workloads for connected nodes. This greatly simplifies the ...
- short-paperAugust 2024
DEMO: Real-Time Simulation of Wireless Signal Propagation for Dynamic Environment Through GPU-Based Ray Tracing
ACM SIGCOMM Posters and Demos '24: Proceedings of the ACM SIGCOMM 2024 Conference: Posters and DemosAugust 2024, Pages 98–100https://doi.org/10.1145/3672202.3673725Wireless technology forms the foundation of modern information and communication systems. However, the inherent unpredictability of signal fluctuations in real-world environments complicates the design and analysis of wireless systems. Efficiently and ...
- research-articleJuly 2024
Ray Tracing Harmonic Functions
ACM Transactions on Graphics (TOG), Volume 43, Issue 4Article No.: 99, Pages 1–18https://doi.org/10.1145/3658201Sphere tracing is a fast and high-quality method for visualizing surfaces encoded by signed distance functions (SDFs). We introduce a similar method for a completely different class of surfaces encoded by harmonic functions, opening up rich new ...
- invited-talkJuly 2024
A Resampled Tree for Many Lights Rendering
SIGGRAPH '24: ACM SIGGRAPH 2024 TalksJuly 2024, Article No.: 35, Pages 1–2https://doi.org/10.1145/3641233.3664352We propose a new hybrid method for efficiently sampling many lights on a scene that combines a simplified spatial tree with a resampling stage. Building on previous methods that work with a split or cut of the light tree, we introduce the idea of ...
- invited-talkJuly 2024
Dynamic Screen Space Textures for Coherent Stylization
SIGGRAPH '24: ACM SIGGRAPH 2024 TalksJuly 2024, Article No.: 50, Pages 1–2https://doi.org/10.1145/3641233.3664321Achieving a watercolor look was an important goal for the style of Walt Disney Animation Studios’ “Wish”, and screen space textures were critical for achieving this, for example to convey a sense of the watercolor paper texture. However, using ...
- research-articleJuly 2024
Spear: Across the Streaming Multiprocessors: Porting a Production Renderer to the GPU
DigiPro '24: Proceedings of the 2024 Digital Production SymposiumJuly 2024, Article No.: 5, Pages 1–9https://doi.org/10.1145/3665320.3670988We ported the Sony Pictures Imageworks version of the Arnold Renderer to the GPU using NVIDIA’s OptiX ray tracing toolkit. This required modifying algorithms to run efficiently on the GPU, the use of new software methodologies to better share source ...
- research-articleJuly 2024
N-BVH: Neural ray queries with bounding volume hierarchies
SIGGRAPH '24: ACM SIGGRAPH 2024 Conference PapersJuly 2024, Article No.: 99, Pages 1–11https://doi.org/10.1145/3641519.3657464Neural representations have shown spectacular ability to compress complex signals in a fraction of the raw data size. In 3D computer graphics, the bulk of a scene’s memory usage is due to polygons and textures, making them ideal candidates for neural ...
- research-articleJuly 2024
Modeling Hair Strands with Roving Capsules
SIGGRAPH '24: ACM SIGGRAPH 2024 Conference PapersJuly 2024, Article No.: 62, Pages 1–9https://doi.org/10.1145/3641519.3657450Hair strands can be modeled by sweeping spheres with varying radii along Bézier curves. We ray-trace such shapes by finding intersections of a given ray with a set of capsules dynamically defined at runtime. A substantial performance boost is achieved by ...
- research-articleMay 2024
View-Independent Adjoint Light Tracing for Lighting Design Optimization
ACM Transactions on Graphics (TOG), Volume 43, Issue 3Article No.: 35, Pages 1–16https://doi.org/10.1145/3662180Differentiable rendering methods promise the ability to optimize various parameters of three-dimensional (3D) scenes to achieve a desired result. However, lighting design has so far received little attention in this field. In this article, we introduce a ...
- research-articleApril 2024
JUNO: Optimizing High-Dimensional Approximate Nearest Neighbour Search with Sparsity-Aware Algorithm and Ray-Tracing Core Mapping
ASPLOS '24: Proceedings of the 29th ACM International Conference on Architectural Support for Programming Languages and Operating Systems, Volume 2April 2024, Pages 549–565https://doi.org/10.1145/3620665.3640360Approximate nearest neighbor (ANN) search is a widely applied technique in modern intelligent applications, such as recommendation systems and vector databases. Therefore, efficient and high-throughput execution of ANN search has become increasingly ...
- research-articleJanuary 2024
Low-latency GNSS multipath simulation and building wall detection in urban environments
Simulation (SIMU), Volume 100, Issue 1Jan 2024, Pages 71–89https://doi.org/10.1177/00375497221145601Precise navigation for fully autonomous driving—especially in dense urban areas—requires periodic precise position estimates. Global Navigation Satellite System (GNSS) technology has the potential to provide absolute positioning accuracy at a centimeter ...
- research-articleApril 2024
Optimizing Wireless Signal Strength on Rowing Boat:A 3D Simulation Approach to Overcoming Human Occlusion
ICCIP '23: Proceedings of the 2023 9th International Conference on Communication and Information ProcessingDecember 2023, Pages 301–307https://doi.org/10.1145/3638884.3638930Wireless communication devices are commonly used in rowing training assistance systems, but there is disconnection caused by human occlusion during use. In order to verify the impact of human occlusion and explore a more optimal deployment method, it has ...
- research-articleDecember 2023
An Architecture and Implementation of Real-Time Sound Propagation Hardware for Mobile Devices
- Eunjae Kim,
- Sukwon Choi,
- Jiyoung Kim,
- Jae-Ho Nah,
- Woonam Jung,
- Tae-Hyeong Lee,
- Yeon-Kug Moon,
- Woo-Chan Park
SA '23: SIGGRAPH Asia 2023 Conference PapersDecember 2023, Article No.: 81, Pages 1–9https://doi.org/10.1145/3610548.3618237This paper presents a high-performance and low-power hardware architecture for real-time sound rendering on mobile devices. Traditional sound rendering algorithms require high-performance CPUs or GPUs for processing because of its high computational ...
- research-articleDecember 2023
Nonlinear Ray Tracing for Displacement and Shell Mapping
SA '23: SIGGRAPH Asia 2023 Conference PapersDecember 2023, Article No.: 93, Pages 1–10https://doi.org/10.1145/3610548.3618199Displacement mapping and shell mapping add fine-scale geometric features to meshes and can significantly enhance the realism of an object’s surface representation. Both methods generate geometry within a layer between the base mesh and its offset mesh ...
- research-articleNovember 2023
Real-time Rendering of Glossy Reflections using Ray Tracing and Two-level Radiance Caching
SA '23: SIGGRAPH Asia 2023 Technical CommunicationsNovember 2023, Article No.: 4, Pages 1–4https://doi.org/10.1145/3610543.3626167Estimation of glossy reflections remains a challenging topic for real-time renderers. Ray tracing is a robust solution for evaluating the specular lobe of a given BRDF; however, it is computationally expensive and introduces noise that requires ...