three-stdlib/shaders/BlendShader.js

stand-alone library of threejs examples

const BlendShader = {
  uniforms: {
    tDiffuse1: { value: null },
    tDiffuse2: { value: null },
    mixRatio: { value: 0.5 },
    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 float mixRatio;",
    "uniform sampler2D tDiffuse1;",
    "uniform sampler2D tDiffuse2;",
    "varying vec2 vUv;",
    "void main() {",
    "	vec4 texel1 = texture2D( tDiffuse1, vUv );",
    "	vec4 texel2 = texture2D( tDiffuse2, vUv );",
    "	gl_FragColor = opacity * mix( texel1, texel2, mixRatio );",
    "}"
  ].join("\n")
};
export {
  BlendShader
};
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