three-stdlib/shaders/TechnicolorShader.js

stand-alone library of threejs examples

const TechnicolorShader = {
  uniforms: {
    tDiffuse: { value: null }
  },
  vertexShader: [
    "varying vec2 vUv;",
    "void main() {",
    "	vUv = uv;",
    "	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
    "}"
  ].join("\n"),
  fragmentShader: [
    "uniform sampler2D tDiffuse;",
    "varying vec2 vUv;",
    "void main() {",
    "	vec4 tex = texture2D( tDiffuse, vec2( vUv.x, vUv.y ) );",
    "	vec4 newTex = vec4(tex.r, (tex.g + tex.b) * .5, (tex.g + tex.b) * .5, 1.0);",
    "	gl_FragColor = newTex;",
    "}"
  ].join("\n")
};
export {
  TechnicolorShader
};
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