Dithering can be used to show users a color that is really not there. It also helps to reduce color banding.
I took a screenshot of my unity game on my Android mobile device, zoomed-in the PNG in Photoshop. I observed that the whole image (even the solid color areas) is covered with a subtle pixel pattern. Unity Play-mode does not have this effect, only on the mobile device.
A - A portion of the game screen at actual size
B - Zoomed-in
C - Contrast increased to show the subtle pattern
Unity offers post-processing dithering in their Post Processing Stack. But this is not it. I don't think Unity is using this to mimic colors because the frames are rendered in a 24-bit color space (to my knowledge). I checked few other commercial mobile games, they don't have this pattern anywhere.
I want to know what is the purpose of this pixel pattern. Thank you.
