schlickFresnel
How mirror-like a surface is at this pixel: r0 face-on, rising to r0 + gain at the rim.
schlickFresnel(
grazing: Expr,
opts: {r0?: number; gain: Expr | number; power?: number},
): Expr
Import materials from shaders/std and use materials.schlickFresnel.
grazing comes from grazingOf or grazingFlat. Glass is {r0: 0.04, gain: 0.96}. Lower the gain to keep the rim from turning into a full mirror over an interior.
Parameters
| Name | Type | Notes |
|---|---|---|
grazing | Expr | |
opts | {r0?: number; gain: Expr | number; power?: number} |
Example
const fresnel = schlickFresnel(grazingOf(n, view), {gain: 0.6})
See also
fresnelBoost— A multiplier that brightens grazing edges: 1 face-on, up to1 + amountat the rim.grazingOf— How edge-on the surface is to the viewer: 0 face-on, 1 grazing.reflect— The directionibounced off a surface with unit normaln.