Accueil / npm / three@0.186.1 / examples / jsm / shaders / VignetteShader.js
VignetteShader.js
/**
* @module VignetteShader
* @three_import import { VignetteShader } from 'three/addons/shaders/VignetteShader.js';
*/
/**
* Based on [PaintEffect postprocess from ro.me](https://github.com/dataarts/3-dreams-of-black/blob/master/deploy/js/effects/PaintEffect.js).
*
* @constant
* @type {ShaderMaterial~Shader}
*/
const VignetteShader = {
name: 'VignetteShader',
uniforms: {
'tDiffuse': { value: null },
'offset': { value: 1.0 },
'darkness': { value: 1.0 }
},
vertexShader: /* glsl */`
varying vec2 vUv;
void main() {
vUv = uv;
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
}`,
fragmentShader: /* glsl */`
uniform float offset;
uniform float darkness;
uniform sampler2D tDiffuse;
varying vec2 vUv;
void main() {
// Eskil's vignette
vec4 texel = texture2D( tDiffuse, vUv );
vec2 uv = ( vUv - vec2( 0.5 ) ) * vec2( offset );
gl_FragColor = vec4( mix( texel.rgb, vec3( 1.0 - darkness ), dot( uv, uv ) ), texel.a );
}`
};
export { VignetteShader };