You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
1.2 KiB
72 lines
1.2 KiB
( function () {
|
|
|
|
/**
|
|
* Dot screen shader
|
|
* based on glfx.js sepia shader
|
|
* https://github.com/evanw/glfx.js
|
|
*/
|
|
|
|
const DotScreenShader = {
|
|
uniforms: {
|
|
'tDiffuse': {
|
|
value: null
|
|
},
|
|
'tSize': {
|
|
value: new THREE.Vector2( 256, 256 )
|
|
},
|
|
'center': {
|
|
value: new THREE.Vector2( 0.5, 0.5 )
|
|
},
|
|
'angle': {
|
|
value: 1.57
|
|
},
|
|
'scale': {
|
|
value: 1.0
|
|
}
|
|
},
|
|
vertexShader: /* glsl */`
|
|
|
|
varying vec2 vUv;
|
|
|
|
void main() {
|
|
|
|
vUv = uv;
|
|
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
|
|
|
|
}`,
|
|
fragmentShader: /* glsl */`
|
|
|
|
uniform vec2 center;
|
|
uniform float angle;
|
|
uniform float scale;
|
|
uniform vec2 tSize;
|
|
|
|
uniform sampler2D tDiffuse;
|
|
|
|
varying vec2 vUv;
|
|
|
|
float pattern() {
|
|
|
|
float s = sin( angle ), c = cos( angle );
|
|
|
|
vec2 tex = vUv * tSize - center;
|
|
vec2 point = vec2( c * tex.x - s * tex.y, s * tex.x + c * tex.y ) * scale;
|
|
|
|
return ( sin( point.x ) * sin( point.y ) ) * 4.0;
|
|
|
|
}
|
|
|
|
void main() {
|
|
|
|
vec4 color = texture2D( tDiffuse, vUv );
|
|
|
|
float average = ( color.r + color.g + color.b ) / 3.0;
|
|
|
|
gl_FragColor = vec4( vec3( average * 10.0 - 5.0 + pattern() ), color.a );
|
|
|
|
}`
|
|
};
|
|
|
|
THREE.DotScreenShader = DotScreenShader;
|
|
|
|
} )();
|
|
|