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47 lines
596 B
JavaScript
47 lines
596 B
JavaScript
/**
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* Luminosity
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* http://en.wikipedia.org/wiki/Luminosity
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*/
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const LuminosityShader = {
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uniforms: {
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'tDiffuse': { value: null }
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},
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vertexShader: /* glsl */`
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varying vec2 vUv;
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void main() {
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vUv = uv;
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gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
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}`,
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fragmentShader: /* glsl */`
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#include <common>
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uniform sampler2D tDiffuse;
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varying vec2 vUv;
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void main() {
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vec4 texel = texture2D( tDiffuse, vUv );
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float l = luminance( texel.rgb );
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gl_FragColor = vec4( l, l, l, texel.w );
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}`
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};
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export { LuminosityShader };
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