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

node_modules/three/examples/js/shaders/DOFMipMapShader.js

@@ -0,0 +1,56 @@
+/**
+ * Depth-of-field shader using mipmaps
+ * - from Matt Handley @applmak
+ * - requires power-of-2 sized render target with enabled mipmaps
+ */
+
+THREE.DOFMipMapShader = {
+
+	uniforms: {
+
+		'tColor': { value: null },
+		'tDepth': { value: null },
+		'focus': { value: 1.0 },
+		'maxblur': { value: 1.0 }
+
+	},
+
+	vertexShader: [
+
+		'varying vec2 vUv;',
+
+		'void main() {',
+
+		'	vUv = uv;',
+		'	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',
+
+		'}'
+
+	].join( '\n' ),
+
+	fragmentShader: [
+
+		'uniform float focus;',
+		'uniform float maxblur;',
+
+		'uniform sampler2D tColor;',
+		'uniform sampler2D tDepth;',
+
+		'varying vec2 vUv;',
+
+		'void main() {',
+
+		'	vec4 depth = texture2D( tDepth, vUv );',
+
+		'	float factor = depth.x - focus;',
+
+		'	vec4 col = texture2D( tColor, vUv, 2.0 * maxblur * abs( focus - depth.x ) );',
+
+		'	gl_FragColor = col;',
+		'	gl_FragColor.a = 1.0;',
+
+		'}'
+
+	].join( '\n' )
+
+};