The diffraction of light- for now, it’s not in Unreal Engine. In theory it could be non ray-tracing. I know that ray-tracing support diffraction , but that can be cheaper method non raytracing
Now if light bump from surface- it diffract on white and black, which not correct. White+black= grey
If "white " light bump from surface, it should diffract on all waves- RGB and other colors, but basic like RGB .
If you, tech specs see the sun of light on surface, you ll see that light on surface are “pixelated” on all spectrum/colors. I searched diffraction on google, so here is basic idea
In conclusion, if that can be introduced- Unreal will have more “colorful” natural image/post process.
Not. Diffraction. From my view caustics is more heavy for calculating every pixel, instead of this Unreal can introduce diffraction of light- which will calculate dynamically, on fly , because light have waves/ocean nature, In theory. It’s same like Nanite triangles, only should be pixels.
- about light, light not consist on RGB- it have all spectrum R G B (red green blue)
+, orange, yellow, , indigo, violet
RGB color dogma- is primitive standard introduced way before
Oh yes, that what I mean, and Unreal lack of it!
In Engine white light bumps to surfaces , and result = white… In real world , if something hit surface- diffract on all spectrum. In theory it’s easy to introduce , but don’t know how technically. From my view something like nanite or GI…
Spider web
Further thoughts. If that kind of system would be introduced, no more strange small bokeh, and avoiding manual lens flares. It can be something like this in auto-mode
https://www.youtube.com/watch?v=oOxFoeXiiSA
So in Unreal Engine white color, is opposite of black… And it mixing around white and black. It not have spectrum.
The right way to do, to put in white light all color/spectrum from Red to Violet. From far view it’s 2 white lights/colors, but if we zoom details, 1 have spectrum, and another haven’t
Leather
Photos created with phone, so the quality… It’s kind of noise but on surfaces. It’s so microscopic, that you not see if not look closely.
Further ideas . Logic. Sunlight lighting on 360 degree> Lights diffract on 360 degree, and diffraction reflect on 360 degree.
From far view yes, we can say -yes , it look like white. . How we see , white from close view it’s not “white”.
