simsite/frontend/node_modules/three-stdlib/shaders/BlendShader.js

const BlendShader = {
  uniforms: {
    tDiffuse1: { value: null },
    tDiffuse2: { value: null },
    mixRatio: { value: 0.5 },
    opacity: { value: 1 }
  },
  vertexShader: (
    /* glsl */
    `
    varying vec2 vUv;

    void main() {

    	vUv = uv;
    	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );

    }
  `
  ),
  fragmentShader: (
    /* glsl */
    `
    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 );

    }
  `
  )
};
export {
  BlendShader
};
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