Pass multiple launch parameter files to OptiX 7

Professional Graphics and Rendering Advanced Graphics OptiX
#1

Hello,

Say I have two separate files for passing launch parameters to an OptiX 7 program (launchParams0.h and launchParams1.h).

Is it possible to pass both these files to OptiX 7 from HOST side via OptixPipelineCompileOptions struct? I can combine both launch parameter files into one file, but I would just like to know (for future reference) if one could possibly pass both files separately from HOST to a single OptiX program like rayGen.

Thanks for any answer(s).

#2

You can only pass one launch params variable to OptiX. The way to get two separate structures into your launch params is to create a third wrapper structure you can use for launch params that contains one instance each of the first two structures.

struct LaunchParams {
  LaunchParams0 params0;
  LaunchParams1 params1;
};

LaunchParams params;
...
pipelineCompileOptions.pipelineLaunchParamsVariableName = "params";
...
optixLaunch(..., <CUdeviceptr>( params ), sizeof( LaunchParams ), ... );

–
David.

#3

Thanks @dhart for the reply.

That’s a good idea to wrap the two structures as one.