three-stdlib/shaders/LuminosityHighPassShader.js

stand-alone library of threejs examples

import { Color } from "three";
const LuminosityHighPassShader = {
  shaderID: "luminosityHighPass",
  uniforms: {
    tDiffuse: { value: null },
    luminosityThreshold: { value: 1 },
    smoothWidth: { value: 1 },
    defaultColor: { value: new Color(0) },
    defaultOpacity: { value: 0 }
  },
  vertexShader: [
    "varying vec2 vUv;",
    "void main() {",
    "	vUv = uv;",
    "	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
    "}"
  ].join("\n"),
  fragmentShader: [
    "uniform sampler2D tDiffuse;",
    "uniform vec3 defaultColor;",
    "uniform float defaultOpacity;",
    "uniform float luminosityThreshold;",
    "uniform float smoothWidth;",
    "varying vec2 vUv;",
    "void main() {",
    "	vec4 texel = texture2D( tDiffuse, vUv );",
    "	vec3 luma = vec3( 0.299, 0.587, 0.114 );",
    "	float v = dot( texel.xyz, luma );",
    "	vec4 outputColor = vec4( defaultColor.rgb, defaultOpacity );",
    "	float alpha = smoothstep( luminosityThreshold, luminosityThreshold + smoothWidth, v );",
    "	gl_FragColor = mix( outputColor, texel, alpha );",
    "}"
  ].join("\n")
};
export {
  LuminosityHighPassShader
};
//# sourceMappingURL=LuminosityHighPassShader.js.map