OptiX 7.1 Release

Gaming and Visualization Technologies Visualization OptiX
1

After a long strange spring, we are pleased to announce the release of the OptiX 7.1 SDK.

The top OptiX 7.1 highlights:

  • Added curves as a new type of geometric primitive
  • Improved the Denoiser
  • Increased instancing limits
  • Several new device exceptions were added to catch common errors

This blog post covers the highlights of the changes: NVIDIA OptiX SDK Tackles Hair and Fur with Release 7.1 | NVIDIA Technical Blog

There is a video from GTC that goes into more depth on curves and demand loading: Log in | NVIDIA Developer

Release Notes: Log in | NVIDIA Developer

Download Link: NVIDIA OptiX™ Downloads | NVIDIA Developer

Documentation: https://raytracing-docs.nvidia.com/ (Also you will find the OptiX 7.1 programming guide & API reference PDF files in the OptiX 7.1 SDK download)

Additional Resources:

Keith’s getting started blog post: How to Get Started with OptiX 7 | NVIDIA Technical Blog

Detlef’s OptiX 7 Advanced Samples: GitHub - NVIDIA/OptiX_Apps: Advanced Samples for the NVIDIA OptiX 7 Ray Tracing SDK

Ingo’s Siggraph 2019 course notes: Ingo Wald / optix7course · GitLab

Link to OptiX 7.0 Release

Happy Ray Tracing!

–
David.

3

Hi David,

The 7.1 release notes mention a new sample that does not exist:

optixDynamicGeometry - Shows typical setup for changing geometry between frames

4

Thanks. That seems to be a copy-paste error in the OptiX SDK 7.1.0 Release Notes. It’s actually an example in the OptiX SDK 6.5.0.

EDIT: The OptiX SDK 7.2.0 release contains the mentioned optixDynamicGeometry example now.

5

Hello David,

I didn’t find this in the release notes, but I noticed that inside an OptixBuildInput the OptixBuildInputCustomPrimitiveArray-typed property was named aabbArray (in 7.0) and now is named customPrimitiveArray (7.1). That is correct, right?

6

Yes, that’s right.
In the end, the OptiX headers are the ground truth information.

Find that difference in optix_7_types.h. That name was more in line with the actual structure names in there, which are OptixBuildInputTriangleArray, OptixBuildInputCurveArray and OptixBuildInputCustomPrimitiveArray.

7

Hi,
are there some UE4 and Optix samples?
Thank you in advance.

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Not that I know of. The Unreal Engine supports ray tracing with DXR since version 4.22. Please find more information in the online UE4 docs.