bsdfs.glsl: Correct comment in G_GGX_Smith

Master

Kkruups dev1

This reverts commit 6e0892b9.

Update Sidebar.Material.js

Update README.md

bsdfs.glsl: Added link to publication for F_Schlick()

Examples: Fix movement in misc_controls_pointerlock.html

GLTFLoader: Clone material before making geometry-related edits.

Code before fix was extracting 4-bits from 1st utf8 Byte instead of 5 bits, resulting in 10-bit binary number instead of 11-bit as specified for Double Byte.

Support Object3D.lookAt( x, y, z )

common.glsl: Introduce linearToRelativeLuminance()

As per @richtr simplified code in switch-case for ArrayBuffer and added comments you requested.