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View, browse and sort the ever-growing list of sessions by day, pass type, topic, and format. With this Session Viewer, you can view GDC 2023 session details and speakers, and share your favorites via social media. You will be able to build your schedule and access it during the show via export or Mobile App, once live. Sessions do fill up and seating is first come, first serve, so arrive early to sessions that you would like to attend.

How to Build a Real-time Path Tracer (Presented by NVIDIA)

Oli Wright  (GeForce DevTech, NVIDIA)

Location: Room 2000, West Hall

Date: Thursday, March 23

Time: 12:45 pm - 1:45 pm

Pass Type: All Access Pass, Core Pass, Summits Pass, Expo Pass, Audio Pass, Independent Games Summit Pass

Topic: Programming

Format: Sponsored Session

Vault Recording: Not Recorded

Audience Level: Intermediate


"This session goes through the details of the Path Tracing SDK, containing the basics required to implement real-time path tracing from zero, or add it to an existing rasterizer.
The implementation contains reference and real-time modes, with basic features expected from a modern path tracer. It embodies years of RT and neural graphics best practices, wrapped into a C++ & HLSL source code sample provided under permissive licensing. We explain the high-level design, components, and how it can be used to speed up your path tracer development. We also cover details and integration of various integrated Nvidia technologies and SDKs such as RTXDI, Shader Execution Ordering, Opacity Micro Maps, Nvidia Realtime Denoisers, DLSS 3 and others, and explain why they were essential for the real-time side of things."


Attendees will come away with a better understanding of path tracing, and how it can be incorporated into their existing art pipeline.

Intended Audience

Artists and engineers focused on maximizing the graphical quality of their real-time gaming applications.