Can't get the accurate number of drawn triangles per frame

Development Rendering
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1

I’m using Unreal Engine 5.1. I have a scene comprising a grid of objects only (nothing else in the scene, no plane, no sky…). The instanced triangle count of the whole set of objects is about 2.7 million. When I check Drawn Triangles stat (under RHI) in Profiler of Session Frontend, the average of a 10s camera movement through the grid is given to be a mere 625. I think this 625 doesn’t make any sense.

  1. so How can I get the accurate number of drawn triangles per frame?
  2. and How can I find/compute the average number of drawn triangles for a certain period of time
    in Unreal Engine 5.1?
2

Hello Trezznor,

If you go to Tools → Audit → Statistics, do you get a number that’s closer to your expectation?

Is Nanite enabled on your objects?

3

Audit → Statistics gives me the instanced triangle count which is 2.7 million. I need the drawn triangle count per frame

4

What do you mean by “Nanite enabled project”? Isn’t Nanite enabled per object(mesh), not the whole project?

My original post was for the case without Nanite-enabled objects but a solution that gives the total drawn triangle count (including both non-Nanite and Nanite-enabled objects) would be great.

5

Hi again,

You’re right that Nanite is per-object, I promise that I did not edit my previous post!

I don’t have a solution, but if you are using Nanite you can see some stats/numbers with the console command nanitestats

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6

thanks but I already got that from my previous post :wink: if I can find a way to do both, i can probably rule the galaxy, if not at least progress my project :smiley:

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