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

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

@@ -0,0 +1,54 @@
+/**
+ * Sepia tone shader
+ * based on glfx.js sepia shader
+ * https://github.com/evanw/glfx.js
+ */
+
+var SepiaShader = {
+
+	uniforms: {
+
+		'tDiffuse': { value: null },
+		'amount': { value: 1.0 }
+
+	},
+
+	vertexShader: [
+
+		'varying vec2 vUv;',
+
+		'void main() {',
+
+		'	vUv = uv;',
+		'	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',
+
+		'}'
+
+	].join( '\n' ),
+
+	fragmentShader: [
+
+		'uniform float amount;',
+
+		'uniform sampler2D tDiffuse;',
+
+		'varying vec2 vUv;',
+
+		'void main() {',
+
+		'	vec4 color = texture2D( tDiffuse, vUv );',
+		'	vec3 c = color.rgb;',
+
+		'	color.r = dot( c, vec3( 1.0 - 0.607 * amount, 0.769 * amount, 0.189 * amount ) );',
+		'	color.g = dot( c, vec3( 0.349 * amount, 1.0 - 0.314 * amount, 0.168 * amount ) );',
+		'	color.b = dot( c, vec3( 0.272 * amount, 0.534 * amount, 1.0 - 0.869 * amount ) );',
+
+		'	gl_FragColor = vec4( min( vec3( 1.0 ), color.rgb ), color.a );',
+
+		'}'
+
+	].join( '\n' )
+
+};
+
+export { SepiaShader };