@thi.ng/shader-ast-stdlib/light/lambert.d.ts

Function collection for modular GPGPU / shader programming with @thi.ng/shader-ast

import type { FloatTerm, Vec3Term } from "@thi.ng/shader-ast";
/**
 * Inline function. Computes Lambert term, i.e. `max(dot(n, l), 0)`. Both
 * vectors must be pre-normalized.
 *
 * @param surfNormal - vec3
 * @param lightDir - vec3
 */
export declare const lambert: (n: Vec3Term, ldir: Vec3Term) => import("@thi.ng/shader-ast").FnCall<"float">;
/**
 * Inline function. Computes Half-Lambertian term. Both vectors must be
 * pre-normalized.
 *
 * https://developer.valvesoftware.com/wiki/Half_Lambert
 *
 * @param n -
 * @param ldir -
 */
export declare const halfLambert: (n: Vec3Term, ldir: Vec3Term) => import("@thi.ng/shader-ast").Term<"float">;
/**
 * Inline function. Computes:
 *
 * col = lambert * lightCol * diffuseCol + ambientCol
 *
 * @param lambertian - float
 * @param diffuseCol - vec3
 * @param lightCol - vec3
 * @param ambientCol - vec3
 */
export declare const diffuseLighting: (lambertian: FloatTerm, diffuse: Vec3Term, light: Vec3Term, ambient: Vec3Term) => import("@thi.ng/shader-ast").Term<"vec3">;
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