webvr js meetup initial commit

node_modules/three/examples/js/shaders/HorizontalBlurShader.js

@@ -0,0 +1,62 @@
+/**
+ * @author zz85 / http://www.lab4games.net/zz85/blog
+ *
+ * Two pass Gaussian blur filter (horizontal and vertical blur shaders)
+ * - described in http://www.gamerendering.com/2008/10/11/gaussian-blur-filter-shader/
+ *   and used in http://www.cake23.de/traveling-wavefronts-lit-up.html
+ *
+ * - 9 samples per pass
+ * - standard deviation 2.7
+ * - "h" and "v" parameters should be set to "1 / width" and "1 / height"
+ */
+
+THREE.HorizontalBlurShader = {
+
+	uniforms: {
+
+		"tDiffuse": { value: null },
+		"h":        { value: 1.0 / 512.0 }
+
+	},
+
+	vertexShader: [
+
+		"varying vec2 vUv;",
+
+		"void main() {",
+
+			"vUv = uv;",
+			"gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
+
+		"}"
+
+	].join( "\n" ),
+
+	fragmentShader: [
+
+		"uniform sampler2D tDiffuse;",
+		"uniform float h;",
+
+		"varying vec2 vUv;",
+
+		"void main() {",
+
+			"vec4 sum = vec4( 0.0 );",
+
+			"sum += texture2D( tDiffuse, vec2( vUv.x - 4.0 * h, vUv.y ) ) * 0.051;",
+			"sum += texture2D( tDiffuse, vec2( vUv.x - 3.0 * h, vUv.y ) ) * 0.0918;",
+			"sum += texture2D( tDiffuse, vec2( vUv.x - 2.0 * h, vUv.y ) ) * 0.12245;",
+			"sum += texture2D( tDiffuse, vec2( vUv.x - 1.0 * h, vUv.y ) ) * 0.1531;",
+			"sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y ) ) * 0.1633;",
+			"sum += texture2D( tDiffuse, vec2( vUv.x + 1.0 * h, vUv.y ) ) * 0.1531;",
+			"sum += texture2D( tDiffuse, vec2( vUv.x + 2.0 * h, vUv.y ) ) * 0.12245;",
+			"sum += texture2D( tDiffuse, vec2( vUv.x + 3.0 * h, vUv.y ) ) * 0.0918;",
+			"sum += texture2D( tDiffuse, vec2( vUv.x + 4.0 * h, vUv.y ) ) * 0.051;",
+
+			"gl_FragColor = sum;",
+
+		"}"
+
+	].join( "\n" )
+
+};