webvr js meetup initial commit

node_modules/three/examples/js/shaders/UnpackDepthRGBAShader.js

@@ -0,0 +1,49 @@
+/**
+ * @author alteredq / http://alteredqualia.com/
+ *
+ * Unpack RGBA depth shader
+ * - show RGBA encoded depth as monochrome color
+ */
+
+THREE.UnpackDepthRGBAShader = {
+
+	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;",
+
+		"#include <packing>",
+
+		"void main() {",
+
+			"float depth = 1.0 - unpackRGBAToDepth( texture2D( tDiffuse, vUv ) );",
+			"gl_FragColor = opacity * vec4( vec3( depth ), 1.0 );",
+
+		"}"
+
+	].join( "\n" )
+
+};