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.
63 lines
1.2 KiB
63 lines
1.2 KiB
2 years ago
|
( function () {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Bleach bypass shader [http://en.wikipedia.org/wiki/Bleach_bypass]
|
||
|
|
* - based on Nvidia example
|
||
|
|
* http://developer.download.nvidia.com/shaderlibrary/webpages/shader_library.html#post_bleach_bypass
|
||
|
|
*/
|
||
|
|
|
||
|
|
const BleachBypassShader = {
|
||
|
|
uniforms: {
|
||
|
|
'tDiffuse': {
|
||
|
|
value: null
|
||
|
|
},
|
||
|
|
'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 sampler2D tDiffuse;
|
||
|
|
|
||
|
|
varying vec2 vUv;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
vec4 base = texture2D( tDiffuse, vUv );
|
||
|
|
|
||
|
|
vec3 lumCoeff = vec3( 0.25, 0.65, 0.1 );
|
||
|
|
float lum = dot( lumCoeff, base.rgb );
|
||
|
|
vec3 blend = vec3( lum );
|
||
|
|
|
||
|
|
float L = min( 1.0, max( 0.0, 10.0 * ( lum - 0.45 ) ) );
|
||
|
|
|
||
|
|
vec3 result1 = 2.0 * base.rgb * blend;
|
||
|
|
vec3 result2 = 1.0 - 2.0 * ( 1.0 - blend ) * ( 1.0 - base.rgb );
|
||
|
|
|
||
|
|
vec3 newColor = mix( result1, result2, L );
|
||
|
|
|
||
|
|
float A2 = opacity * base.a;
|
||
|
|
vec3 mixRGB = A2 * newColor.rgb;
|
||
|
|
mixRGB += ( ( 1.0 - A2 ) * base.rgb );
|
||
|
|
|
||
|
|
gl_FragColor = vec4( mixRGB, base.a );
|
||
|
|
|
||
|
|
}`
|
||
|
|
};
|
||
|
|
|
||
|
|
THREE.BleachBypassShader = BleachBypassShader;
|
||
|
|
|
||
|
|
} )();
|