添加关照、全局等高线、修改图层问题

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

@@ -0,0 +1,16 @@
+import { tslFn } from '../../shadernode/ShaderNode.js';
+
+const F_Schlick = tslFn( ( { f0, f90, dotVH } ) => {
+
+	// Original approximation by Christophe Schlick '94
+	// float fresnel = pow( 1.0 - dotVH, 5.0 );
+
+	// Optimized variant (presented by Epic at SIGGRAPH '13)
+	// https://cdn2.unrealengine.com/Resources/files/2013SiggraphPresentationsNotes-26915738.pdf
+	const fresnel = dotVH.mul( - 5.55473 ).sub( 6.98316 ).mul( dotVH ).exp2();
+
+	return f0.mul( fresnel.oneMinus() ).add( f90.mul( fresnel ) );
+
+} ); // validated
+
+export default F_Schlick;