Initial commit

HTML/ThreeJS/node_modules/three/examples/js/shaders/VignetteShader.js

@@ -0,0 +1,56 @@
+( function () {
+
+	/**
+ * Vignette 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 VignetteShader = {
+		uniforms: {
+			'tDiffuse': {
+				value: null
+			},
+			'offset': {
+				value: 1.0
+			},
+			'darkness': {
+				value: 1.0
+			}
+		},
+		vertexShader:
+  /* glsl */
+  `
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vUv = uv;
+			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+
+		}`,
+		fragmentShader:
+  /* glsl */
+  `
+
+		uniform float offset;
+		uniform float darkness;
+
+		uniform sampler2D tDiffuse;
+
+		varying vec2 vUv;
+
+		void main() {
+
+			// Eskil's vignette
+
+			vec4 texel = texture2D( tDiffuse, vUv );
+			vec2 uv = ( vUv - vec2( 0.5 ) ) * vec2( offset );
+			gl_FragColor = vec4( mix( texel.rgb, vec3( 1.0 - darkness ), dot( uv, uv ) ), texel.a );
+
+		}`
+	};
+
+	THREE.VignetteShader = VignetteShader;
+
+} )();