最新代码

public/sdk/three/jsm/shaders/FocusShader.js

@@ -0,0 +1,89 @@
+/**
+ * Focus shader
+ * based on PaintEffect postprocess from ro.me
+ * http://code.google.com/p/3-dreams-of-black/source/browse/deploy/js/effects/PaintEffect.js
+ */
+
+const FocusShader = {
+
+	name: 'FocusShader',
+
+	uniforms: {
+
+		'tDiffuse': { value: null },
+		'screenWidth': { value: 1024 },
+		'screenHeight': { value: 1024 },
+		'sampleDistance': { value: 0.94 },
+		'waveFactor': { value: 0.00125 }
+
+	},
+
+	vertexShader: /* glsl */`
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vUv = uv;
+			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+
+		}`,
+
+	fragmentShader: /* glsl */`
+
+		uniform float screenWidth;
+		uniform float screenHeight;
+		uniform float sampleDistance;
+		uniform float waveFactor;
+
+		uniform sampler2D tDiffuse;
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vec4 color, org, tmp, add;
+			float sample_dist, f;
+			vec2 vin;
+			vec2 uv = vUv;
+
+			add = color = org = texture2D( tDiffuse, uv );
+
+			vin = ( uv - vec2( 0.5 ) ) * vec2( 1.4 );
+			sample_dist = dot( vin, vin ) * 2.0;
+
+			f = ( waveFactor * 100.0 + sample_dist ) * sampleDistance * 4.0;
+
+			vec2 sampleSize = vec2(  1.0 / screenWidth, 1.0 / screenHeight ) * vec2( f );
+
+			add += tmp = texture2D( tDiffuse, uv + vec2( 0.111964, 0.993712 ) * sampleSize );
+			if( tmp.b < color.b ) color = tmp;
+
+			add += tmp = texture2D( tDiffuse, uv + vec2( 0.846724, 0.532032 ) * sampleSize );
+			if( tmp.b < color.b ) color = tmp;
+
+			add += tmp = texture2D( tDiffuse, uv + vec2( 0.943883, -0.330279 ) * sampleSize );
+			if( tmp.b < color.b ) color = tmp;
+
+			add += tmp = texture2D( tDiffuse, uv + vec2( 0.330279, -0.943883 ) * sampleSize );
+			if( tmp.b < color.b ) color = tmp;
+
+			add += tmp = texture2D( tDiffuse, uv + vec2( -0.532032, -0.846724 ) * sampleSize );
+			if( tmp.b < color.b ) color = tmp;
+
+			add += tmp = texture2D( tDiffuse, uv + vec2( -0.993712, -0.111964 ) * sampleSize );
+			if( tmp.b < color.b ) color = tmp;
+
+			add += tmp = texture2D( tDiffuse, uv + vec2( -0.707107, 0.707107 ) * sampleSize );
+			if( tmp.b < color.b ) color = tmp;
+
+			color = color * vec4( 2.0 ) - ( add / vec4( 8.0 ) );
+			color = color + ( add / vec4( 8.0 ) - color ) * ( vec4( 1.0 ) - vec4( sample_dist * 0.5 ) );
+
+			gl_FragColor = vec4( color.rgb * color.rgb * vec3( 0.95 ) + color.rgb, 1.0 );
+
+		}`
+
+};
+
+export { FocusShader };