three-stdlib/shaders/UnpackDepthRGBAShader.js

stand-alone library of threejs examples

const UnpackDepthRGBAShader = {
  uniforms: {
    tDiffuse: { value: null },
    opacity: { value: 1 }
  },
  vertexShader: [
    "varying vec2 vUv;",
    "void main() {",
    "	vUv = uv;",
    "	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
    "}"
  ].join("\n"),
  fragmentShader: [
    "uniform float opacity;",
    "uniform sampler2D tDiffuse;",
    "varying vec2 vUv;",
    "#include <packing>",
    "void main() {",
    "	float depth = 1.0 - unpackRGBAToDepth( texture2D( tDiffuse, vUv ) );",
    "	gl_FragColor = vec4( vec3( depth ), opacity );",
    "}"
  ].join("\n")
};
export {
  UnpackDepthRGBAShader
};
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