3 identifier: movit.diffusion
4 title: Diffusion (GLSL)
7 creator: Steinar H. Gunderson
13 There are many different effects that go under the name of "diffusion",
14 seemingly all of the inspired by the effect you get when you put a
15 diffusion filter in front of your camera lens. The effect most people
16 want is a general flattening/smoothing of the light, and reduction of
17 fine detail (most notably, blemishes in people's skin), without ruining
18 edges, which a regular blur would do.
19 We do a relatively simple version, sometimes known as "white diffusion",
20 where we first blur the picture, and then overlay it on the original
21 using the original as a matte.