Working emissive materials in RTGI (with screenshots)

[TommyBear]

@Aeries

Setting enthusiasm aside, what kind of performance are you getting and on what hardware? I’m having a hell of a time with Unreal Engine getting acceptable performance with RTGI on a 2070 MaxQ.

Hey Aeries,

It is performant for me on a GeForce RTX 2070 on a ROG laptop (but noisy at default samples per pixel GI). Mileage will vary with scene size/complexity/lighting setup and samples per pixel of your GI. Note that the emissive material light sources are noisy by nature, but with the right denoiser (not included ), I believe, can yield get good results. This scene for example runs 60fps on my GeForce RTX 2070, at 30 samples per pixel GI, but the scene is small.

Default Samples (60fps):

30 Samples Per Pixel(60fps):

I guess to sum up, I would say that the addition of this won’t hit your performance as much as people would expect, but dark scenes will be noisy.

Tommy.