https://github.com/WWBN/AVideo/issues/8713

node_modules/three/examples/jsm/shaders/BleachBypassShader.js

@@ -0,0 +1,64 @@
+/**
+ * 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
+ */
+
+var BleachBypassShader = {
+
+	uniforms: {
+
+		'tDiffuse': { value: null },
+		'opacity': { value: 1.0 }
+
+	},
+
+	vertexShader: [
+
+		'varying vec2 vUv;',
+
+		'void main() {',
+
+		'	vUv = uv;',
+		'	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',
+
+		'}'
+
+	].join( '\n' ),
+
+	fragmentShader: [
+
+		'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 );',
+
+		'}'
+
+	].join( '\n' )
+
+};
+
+export { BleachBypassShader };