添加关照、全局等高线、修改图层问题

static/sdk/three/jsm/nodes/functions/BSDF/D_GGX.js

@@ -0,0 +1,23 @@
+import { tslFn } from '../../shadernode/ShaderNode.js';
+
+// Microfacet Models for Refraction through Rough Surfaces - equation (33)
+// http://graphicrants.blogspot.com/2013/08/specular-brdf-reference.html
+// alpha is "roughness squared" in Disney’s reparameterization
+const D_GGX = tslFn( ( { alpha, dotNH } ) => {
+
+	const a2 = alpha.pow2();
+
+	const denom = dotNH.pow2().mul( a2.oneMinus() ).oneMinus(); // avoid alpha = 0 with dotNH = 1
+
+	return a2.div( denom.pow2() ).mul( 1 / Math.PI );
+
+} ).setLayout( {
+	name: 'D_GGX',
+	type: 'float',
+	inputs: [
+		{ name: 'alpha', type: 'float' },
+		{ name: 'dotNH', type: 'float' }
+	]
+} ); // validated
+
+export default D_GGX;