Bounce cards = tons of artifacts

[BoothStudios (Booth)]

@Riley1389

In addition to what darthviper107 said, SSR doesn’t calculate light or lighting projection like reflection captures, GI solutions, and Lightmass do. SSR, in very simple terms, simply renders a modified view of the current primary camera and composites that image data onto any pixels in the current frame that meet the requirements of the post process volumes (By that, I mean every pixel that is rendering material information whose roughness value is within the specified threshold, by default it is 0.8, if I’m not mistaken. Then for each pixel that falls within that threshold, the SSR image is mixed with the existing pixel info and further modified by other material information like normal map detail, roughness, color, etc.

Please, someone correct me if I’m wrong, but I believe that’s the very simple overview of how SSR functions. Which is certainly cheaper than essentially re-rendering the entire scene again like with planar reflections.

So I assume that if SSR did participate in lighting calculation it would lead to whiteout situation, because the SSR would reflect more and more light because it recaptures a new image every frame (or is it based on delta time? I actually have no idea which, but for this explanation it doesn’t really matter.) So it would be like adding continuously adding 1 to a number at a very fast rate. So say you start with 10 and keep adding one, soon enough you reach 100, then 1000, then 10000, and so on.

Thank you for the explanation! I appreciate the time to educate me