OptiX 7.3 optixMotionGeometry sample cuda compile errors

Gaming and Visualization Technologies Visualization OptiX
1

Thanks for the new OptiX 7.3 update! I was especially pleased to see the new VolumeViewer sample using nanovdb.

Unfortunately, some of the samples don’t run out of the box on my setup. Here’s a sample of some of the errors when NVRTC tries to compile “optixMotionGeometry.cu”. I believe the problem is that NVRTC cannot compile code with anonymous struct inside a union.

Caught exception: NVRTC Compilation failed.
C:/ProgramData/NVIDIA Corporation/OptiX SDK 7.3.0/SDK/optixMotionGeometry/optixMotionGeometry.cu(89): warning: declaration does not declare anything
C:/ProgramData/NVIDIA Corporation/OptiX SDK 7.3.0/SDK/optixMotionGeometry/optixMotionGeometry.cu(92): warning: declaration does not declare anything
C:/ProgramData/NVIDIA Corporation/OptiX SDK 7.3.0/SDK/optixMotionGeometry/optixMotionGeometry.cu(89): warning: types cannot be declared in anonymous unions
C:/ProgramData/NVIDIA Corporation/OptiX SDK 7.3.0/SDK/optixMotionGeometry/optixMotionGeometry.cu(92): warning: types cannot be declared in anonymous unions
C:/ProgramData/NVIDIA Corporation/OptiX SDK 7.3.0/SDK/optixMotionGeometry/optixMotionGeometry.cu(99): error: identifier “p0” is undefined
C:/ProgramData/NVIDIA Corporation/OptiX SDK 7.3.0/SDK/optixMotionGeometry/optixMotionGeometry.cu(100): error: identifier “p1” is undefined
C:/ProgramData/NVIDIA Corporation/OptiX SDK 7.3.0/SDK/optixMotionGeometry/optixMotionGeometry.cu(101): error: identifier “p2” is undefined

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Windows 10 Home
OptiX 7.3
GeForce RTX 2070 Super with driver 466.11
Cuda 11.2
Visual Studio Community 2019 Version 16.9.4

2

You’re right. Sorry about that, we are fixing up the SDK this week.

You can disable NVRTC by setting the cmake variable CUDA_NVRTC_ENABLED to OFF. Then the new sample should compile.

–
David.