Hi,
I'm a beginner in this field, and I apologize for my naive questions.
In optixTracer.cpp, the function buildBVH, from my understanding, creates a traversable handle ias which is built on a gaussian primitive and then creates gNum gaussian instances that reference that ias. At last, a gas is built based on those instances.
From my understanding, in Optix, ias is top-level and gas is bottom-level. However, in 3DGRT tracer, it looks like the handle ias becomes the bottom-level acceleration structure. Is there anything that I misunderstood?
Besides, I wonder why a very large gas is built on millions of instances and each instance only represent one gaussian primitive. What's the benefit?
Thank you in advance!
Hi,
I'm a beginner in this field, and I apologize for my naive questions.
In optixTracer.cpp, the function buildBVH, from my understanding, creates a traversable handle ias which is built on a gaussian primitive and then creates gNum gaussian instances that reference that ias. At last, a gas is built based on those instances.
From my understanding, in Optix, ias is top-level and gas is bottom-level. However, in 3DGRT tracer, it looks like the handle ias becomes the bottom-level acceleration structure. Is there anything that I misunderstood?
Besides, I wonder why a very large gas is built on millions of instances and each instance only represent one gaussian primitive. What's the benefit?
Thank you in advance!