I was reading blender docs about the diffuse shader and I came by this paragraph under "Options" in "Fresnel" section that says "Use cubic interpolation for diffuse values, for smoother transitions between light areas and dark areas". What exactly is a cubic interpolation and how helpful is it in learning blender or 3D Computer Graphics in general. This is the link -- "Diffuse Shaders Blender Docs". Thank you.
This is the real deep nerdy part of computer graphics, where all the math is. You have to be almost in the development chair to understand all of that. You do not have to know this stuff at all to work on computer graphics and 3D, you can rest easy, to make cool art there's no need to get that deep into the weeds. But if it gets your attention and you like it, you can go down that rabbit hole of course.
Wow, that is pre-2.8 Blender Render stuff, aabhishek_90 !
That has nothing to do with the Fresnel. (Fresnel is in computer graphics mostly calculated by a 5th power Schlick aproximation.)
It is how, if you have two points with known colors, the in-between points are colored. Basically this is what happens, going from black to white:
And Omar already answered the last part of your question👍🏻.
Hi Martin Bergwer, "Wow, that is pre-2.8 Blender Render stuf", I know 😂, I have just started off and this 2.78 version document showed up at top in search results. I will now go for the latest docs.
Hi Omar Domenech, thank you for the clarification.
