Too much noise, what I am doing wrong?

[TekuSP]

https://i.imgur.com/YBsuu9Y.jpg And yes I understand so more NumSamples removes noise partially, but for cost of a lot power. But when I look at any game supporting raytracing or DX12 RayTracing examples or Nvidia RayTracing, they no or almost no noise. Or even image on this Github, that front one! What I am doing wrong? Did I miss something?

[mellinoe]

The image from the README is just generated from 100 samples, so that's why it looks a lot better 😄

This is a really primitive ray tracer, and it does nothing to clean up the noisy image. The easiest ways to remove or mask noise would be:

• Crank up the sample count significantly -- this will make it significantly slower
• "Accumulate" color info into the output texture, rather than clearing it and re-generating it every frame. This will clear up some of the noisiness, but I think it reduces clarity a bit.
• Apply some kind of post-processing filter to the image. I'm sure that the better examples you've seen are using some really advanced filtering techniques. There's probably some sort of simple filtering or blurring that could be applied to mask the noise.