import type { Tuple } from "@thi.ng/api" ; export enum Blend { ZERO = 0 , ONE = 1 , SRC_COLOR = 768 , ONE_MINUS_SRC_COLOR = 769 , DST_COLOR = 774 , ONE_MINUS_DST_COLOR = 775 , SRC_ALPHA = 770 , ONE_MINUS_SRC_ALPHA = 771 , DST_ALPHA = 772 , ONE_MINUS_DST_ALPHA = 773 , CONSTANT_COLOR = 32769 , ONE_MINUS_CONSTANT_COLOR = 32770 , CONSTANT_ALPHA = 32771 , ONE_MINUS_CONSTANT_ALPHA = 32772 , SRC_ALPHA_SATURATE = 776 } export enum BlendEquation { FUNC_ADD = 32774 , FUNC_REVERSE_SUBTRACT = 32779 , FUNC_SUBTRACT = 32778 , MAX = 32776 , MIN = 32775 } export type BlendFunc = Tuple < Blend , 2 > ; export const BLEND_NORMAL = [ Blend . SRC_ALPHA , Blend . ONE_MINUS_SRC_ALPHA , ] ; export const BLEND_ADD = [ Blend . SRC_ALPHA , Blend . DST_ALPHA ] ;