Aaron Lefohn Profile picture
Vice President of Graphics Research at NVIDIA. Opinions are my own.

Mar 29, 2022, 13 tweets

(1/10) Slides + Recording of Petrik Clarberg’s GDC/GTC real-time path tracing research talk are now available online #GDC2022 #GTC22

research.nvidia.com/publication/20…

(2/10) Watch the recording of Petrik’s real-time path tracing research talk at the GTC site.

Registration required, but it’s free: reg.rainfocus.com/flow/nvidia/gt…

(3/10) This is real-time path tracing research.

30-bounce path tracing in a scene with ~3B instanced triangles.

(4/10) This is real-time path tracing research.

Former offline rendering academic scene (benedikt-bitterli.me/resources/)

(5/10) This is real-time path tracing research.

Former offline rendering academic scene (benedikt-bitterli.me/resources/)

(6/10) This is real-time path tracing research.

Former offline rendering academic scene (benedikt-bitterli.me/resources/)

(7/10) This is real-time path tracing research.

@beeple Zero Day

(8/10) This is real-time path tracing research.

Fully dynamic path traced lighting on ~3B instanced triangles

(9/10) Unsolved problem in real-time path tracing

High-frequency specular reflections in ‘contemporary bathroom’ academic light transport scene (benedikt-bitterli.me/resources/)

(10/10) Unsolved problem in real-time path tracing

Sampling and denoising many-bounce specular chains
This is (up to) 100-bounce real-time path tracing vs high-spp reference.

(10+1/10) Original art credit for the Paris opera house model goes to GoldSmooth on TurboSquid. Our converted version has ~160M instanced triangles and is lit by ~500,000 emissive triangles and ~40 animated spotlights.

turbosquid.com/3d-models/3d-m…

(10+2/10) This is real-time path tracing research.

Here's another previously-offline-rendering academic scene path traced in 13.6ms (74fps). Note that most of the light is coming through the diffuse transmissive curtains. benedikt-bitterli.me/resources/

(10+3/10) This is real-time path tracing research.

Another previously-offline-rendering academic scene path traced in 12.5ms (80fps). Note the mix of glossy, specular, and diffuse light transport.
Asset from benedikt-bitterli.me/resources/

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