An all in one shader for eyes
Color the Iris, set its size, squeeze it if it's a dragoneye, set depth for a fake refractive effect and amplify the translucency of the iris.
This shader is meant to fake the complex geometry of an eyeball.
No Textures needed!
No UV-Maps needed!
eyeball/iris1/iris2 : coloring the eye.
distort : how much does noise mix the colors.
scale : the scale of the noise.
homogenious : relaxing/stretching the noisepattern in radial direction.
iris%/pupil% : the radius relative to the eyeball surface in percent.
stretch : squeeze the pupil to a slit to simulate a cats eye.
depth : refractive fake effect to simulate depth of the pupil (works best if stretch is 0).
caustic : intensity of the translucent effect.
bump : bumpintensity of the iris-noisepattern.
vector : the space of the mapping. Input>TextureCoordinate>Object will direct the iris in z-direction of the object coordinates.
As the stretchvalue squeezes the eye, you can animate it to transform the pupil from round to slit, like a human transforming into a dragon.
The pupil is oriented into the -z Axis of objectspace. so eyes will look "down" initially.
please read the parameter list in the product description.
- adjust the values from top to bottom.
- as Vector input use object coordinates from Input>textureCoordinates>Object to get the iris oriented in the z-direction of your mesh. If you want to animate the eye along the meshsurface choose a controlobject in the selector of the textureCoordinate-cyclesnode.
- use the homogenityvalue if the stretch value stretches the noise too much.
- the depth might lead to strange results when applied to a stretched pupil. handle with care, as the depth is just meant to fake somerefractive behaviour of the eye.
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