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/**
* Blend two textures
*/
const BlendShader = {
name: 'BlendShader',
uniforms: {
'tDiffuse1': { value: null },
'tDiffuse2': { value: null },
'mixRatio': { value: 0.5 },
'opacity': { value: 1.0 }
},
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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