thi-ng/umbrella

import type { Tuple } from "@thi.ng/api";

export enum StencilOp {
    KEEP = 7680,
    ZERO = 0,
    REPLACE = 7681,
    INCR = 7682,
    INCR_WRAP = 34055,
    DECR = 7683,
    DECR_WRAP = 34056,
    INVERT = 5386,
}

export enum StencilFn {
    NEVER = 512,
    LESS = 513,
    EQUAL = 514,
    LEQUAL = 515,
    GREATER = 516,
    NOTEQUAL = 517,
    GEQUAL = 518,
    ALWAYS = 519,
}

export type StencilOpParams = Tuple<StencilOp, 3>;

export type StencilFnParams = [StencilFn, number, number];