summit/frontend/node_modules/three-stdlib/shaders/LuminosityShader.js

44 lines
650 B
JavaScript

const LuminosityShader = {
uniforms: {
tDiffuse: { value: null }
},
vertexShader: (
/* glsl */
`
varying vec2 vUv;
void main() {
vUv = uv;
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
}
`
),
fragmentShader: (
/* glsl */
`
#include <common>
uniform sampler2D tDiffuse;
varying vec2 vUv;
void main() {
vec4 texel = texture2D( tDiffuse, vUv );
float l = linearToRelativeLuminance( texel.rgb );
gl_FragColor = vec4( l, l, l, texel.w );
}
`
)
};
export {
LuminosityShader
};
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