Tuesday, April 12, 2011

What Pretty Eyes you Have!

So my friend Nha found this pretty cool tutorial about eye shaders and specular.
I'm such a sucker for tutorials and extra bits of knowledge, that I had to try it out.


So let's take a look at an animated character's eye.
There is light playing on the iris, creating highlights and shadows.
Also lot of animated characters have a bright white highlight, which makes the character appear friendly.
So I want to create something similar!

My Before
a bit dead and boring

 Lets throw is a ramp shader with a Color Input set to "Normalized Brightness"
onto the Iris. Light instantly reflects off of the iris.

 Now lets add a projection of a image of a white dot as the Incandescence of the outer layer of the eyeball.
Using a image with allow us to control the position of the speculator dot, the softness of the dot, and the brightness.

I then began to notice the reflection was way too uniform and looked nothing like an eye should, even styled

so I added a ramped shader as a masking to the shader that controls the light reflection to create stripes of highlights

looks good after a couple more tweaks

Will soon post the rig demo for Jayden and the cool face GUI that controls the expressions and eye speculator ability. 

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