webvr js meetup initial commit

node_modules/three/examples/js/nodes/utils/BumpNode.js

@@ -0,0 +1,49 @@
+/**
+ * @author sunag / http://www.sunag.com.br/
+ */
+
+THREE.BumpNode = function( value, coord, scale ) {
+
+	THREE.TempNode.call( this, 'v3' );
+
+	this.value = value;
+	this.coord = coord || new THREE.UVNode();
+	this.scale = scale || new THREE.Vector2Node( 1, 1 );
+
+};
+
+THREE.BumpNode.fBumpToNormal = new THREE.FunctionNode( [
+"vec3 bumpToNormal( sampler2D bumpMap, vec2 uv, vec2 scale ) {",
+"	vec2 dSTdx = dFdx( uv );",
+"	vec2 dSTdy = dFdy( uv );",
+"	float Hll = texture2D( bumpMap, uv ).x;",
+"	float dBx = texture2D( bumpMap, uv + dSTdx ).x - Hll;",
+"	float dBy = texture2D( bumpMap, uv + dSTdy ).x - Hll;",
+"	return vec3( .5 + ( dBx * scale.x ), .5 + ( dBy * scale.y ), 1.0 );",
+"}"
+].join( "\n" ), null, { derivatives: true } );
+
+THREE.BumpNode.prototype = Object.create( THREE.TempNode.prototype );
+THREE.BumpNode.prototype.constructor = THREE.BumpNode;
+
+THREE.BumpNode.prototype.generate = function( builder, output ) {
+
+	var material = builder.material, func = THREE.BumpNode.fBumpToNormal;
+
+	builder.include( func );
+
+	if ( builder.isShader( 'fragment' ) ) {
+
+		return builder.format( func.name + '(' + this.value.build( builder, 'sampler2D' ) + ',' +
+			this.coord.build( builder, 'v2' ) + ',' +
+			this.scale.build( builder, 'v2' ) + ')', this.getType( builder ), output );
+
+	} else {
+
+		console.warn( "THREE.BumpNode is not compatible with " + builder.shader + " shader." );
+
+		return builder.format( 'vec3( 0.0 )', this.getType( builder ), output );
+
+	}
+
+};