@thi.ng/webgl/uniforms.js

WebGL & GLSL abstraction layer

import { equivArrayLike } from "@thi.ng/equiv";
import { IDENT22, IDENT33, IDENT44 } from "@thi.ng/matrices/constants";
import { ZERO2, ZERO3, ZERO4 } from "@thi.ng/vectors/api";
const __uniformS = (fn) => (gl, loc, defaultVal = 0) => {
  let prev;
  return (x) => {
    x = x === void 0 ? defaultVal : x;
    if (x !== prev) {
      gl["uniform1" + fn](loc, x);
      prev = x;
    }
  };
};
const __uniformV = (fn, sysDefault) => (gl, loc, defaultVal = sysDefault) => {
  let prev = [];
  return (x) => {
    x = x === void 0 ? defaultVal : x;
    if (!equivArrayLike(prev, x)) {
      gl["uniform" + fn](loc, x);
      prev = [...x];
    }
  };
};
const __uniformM = (fn, sysDefault) => (gl, loc, defaultVal = sysDefault) => {
  let prev = [];
  return (x) => {
    x = x === void 0 ? defaultVal : x;
    if (!equivArrayLike(prev, x)) {
      gl["uniformMatrix" + fn](loc, false, x);
      prev = [...x];
    }
  };
};
const Z1 = [0];
const UNIFORM_SETTERS = {
  bool: __uniformS("i"),
  float: __uniformS("f"),
  int: __uniformS("i"),
  uint: __uniformS("ui"),
  bvec2: __uniformV("2iv", ZERO2),
  bvec3: __uniformV("3iv", ZERO3),
  bvec4: __uniformV("4iv", ZERO4),
  ivec2: __uniformV("2iv", ZERO2),
  ivec3: __uniformV("3iv", ZERO3),
  ivec4: __uniformV("4iv", ZERO4),
  vec2: __uniformV("2fv", ZERO2),
  vec3: __uniformV("3fv", ZERO3),
  vec4: __uniformV("4fv", ZERO4),
  mat2: __uniformM("2fv", IDENT22),
  mat3: __uniformM("3fv", IDENT33),
  mat4: __uniformM("4fv", IDENT44),
  sampler2D: __uniformS("i"),
  sampler2DShadow: __uniformS("i"),
  sampler3D: __uniformS("i"),
  samplerCube: __uniformS("i"),
  samplerCubeShadow: __uniformS("i"),
  "bool[]": __uniformV("1iv", Z1),
  "float[]": __uniformV("1fv", Z1),
  "int[]": __uniformV("1iv", Z1),
  "uint[]": __uniformV("1uiv", Z1),
  "bvec2[]": __uniformV("2iv", ZERO2),
  "bvec3[]": __uniformV("3iv", ZERO3),
  "bvec4[]": __uniformV("4iv", ZERO4),
  "ivec2[]": __uniformV("2iv", ZERO2),
  "ivec3[]": __uniformV("3iv", ZERO3),
  "ivec4[]": __uniformV("4iv", ZERO4),
  "vec2[]": __uniformV("2fv", ZERO2),
  "vec3[]": __uniformV("3fv", ZERO3),
  "vec4[]": __uniformV("4fv", ZERO4),
  "mat2[]": __uniformM("2fv", ZERO2),
  "mat3[]": __uniformM("3fv", ZERO3),
  "mat4[]": __uniformM("4fv", ZERO4),
  "sampler2D[]": __uniformV("1iv", Z1),
  "sampler2DShadow[]": __uniformV("1iv", Z1),
  "sampler3D[]": __uniformV("1iv", Z1),
  "samplerCube[]": __uniformV("1iv", Z1),
  "samplerCubeShadow[]": __uniformV("1iv", Z1)
};
export {
  UNIFORM_SETTERS
};