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tuankuranes.bsky.social
Tuan Kuranes
@tuankuranes.bsky.social
1.4K followers 3.8K following 32 posts
cpu, gpu @sketchfab @fab @epicgames
Computer graphics from c64 to ungodly number of shader processor on modern 3d rigs
Only cpu/gpu/dev/gamdev/vfx content
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tuankuranes.bsky.social
Axis-Normalized Ray-Box Intersection
"By transforming the ray we eliminate the need for one third of the traditional bounding-slab tests and achieve a speed enhancement of approximately 13.8% or 10.9%"
graphics.tu-bs.de/publications...
Left. The dominant axis is x. We first translate the ray along its direction vector such that the transformed ray’s origin o coincides with the subspace spanned by the other, non-dominant axes (only y in this 2D-example). Scaling the direction vector by 1/dx the x-component of the transformed ray’s direction d becomes 1. Now the intersection ray parameter with the near and far plane along the x-axis directly corresponds to the bounding box coordinates bminX and bmaxX without any further computations required
May 15, 2025 at 8:46 AM
tuankuranes.bsky.social
A "new" one is "BBox sah" of "Fast triangle pairing for ray tracing" www.highperformancegraphics.org/posters23/Fa...
Poster describin how the pairing work as improvement of the sah as BBox sah, rough steps of the construction and perfs improvements
March 27, 2025 at 6:05 AM
tuankuranes.bsky.social
A contact solver for physics-based simulations involving 👚 shells, 🪵 solids and 🪢 rods
github.com/st-tech/ppf-...
Five cylindrical shells are individually twisted and bundled together (A), A single woven cylinder is twisted forming intricate buckles (B), A set of lengthy strands are poured into a bowl (C), Fluttering ribbons are poured into a bowl followed by a strong impact from a falling sphere (D), A fishing knot is tightened (E), Eight squishy hairy balls are compressed and released (F), A house of cards collapses with a gentle touch by a rolling sphere (G), Ten sheets are smashed onto the ground by a fast falling heavy sphere (H). Peak contact counts are 168.35 million (A), 17.59 million (D), 6.49 million (C), 6.04 million (B), 5.63 million (H), 2.89 million (F). Average time per video frame is 194s (A), 745s (B), 247s (C), 184s (D), 3.30s (E), 196s (F), 5.04s (G), 77.35s (H).
December 19, 2024 at 5:27 AM
tuankuranes.bsky.social
Data Parallel Path Tracing in Object Space
blog post ingowald.blog/2024/12/13/n...
paper arxiv.org/pdf/2204.10170
Results pictures and render time resulting from the paper Data Parallel Path Tracing in Object Space, emphasing the good results, here the PBRT landscape: max 3.7 GB GPU usage, 6.2 FPS (1 path/pixel) and the Disney Moana island: max 25 GB GPU usage, 7.9 FP
December 15, 2024 at 9:59 AM