How to get top object AABB?

Gaming and Visualization Technologies Visualization OptiX
1

Hi,

I am started to work with OptiX these days…

I want to ask how to get top object AABB?
I cannot find the related functions…

In this post:
https://devtalk.nvidia.com/default/topic/1017362/optix/acceleration-getdata-and-setdata/

They says “Being able to query the top bounding box through the API is a fair request; I’ll forward that along for consideration.”

Bust I did not find related methods to obtain Top AABB from acceleration structure…
Is there any way to get the AABB?

2

I want this feature too.
This makes developing a light transport algorithm shooting rays from a light source + infinite distant light (or IBL) easier.