add encodings to includes for primary frag shaders.

src/renderers/shaders/ShaderLib.js

@@ -71,6 +71,7 @@ THREE.ShaderLib = {
 			"#endif",
 
 			'#include <common>',
+			'#include <encodings>',
 			'#include <color_pars_fragment>',
 			'#include <uv_pars_fragment>',
 			'#include <uv2_pars_fragment>',
@@ -199,6 +200,7 @@ THREE.ShaderLib = {
 			"#endif",
 
 			'#include <common>',
+			'#include <encodings>',
 			'#include <color_pars_fragment>',
 			'#include <uv_pars_fragment>',
 			'#include <uv2_pars_fragment>',
@@ -363,6 +365,7 @@ THREE.ShaderLib = {
 			"uniform float opacity;",
 
 			'#include <common>',
+			'#include <encodings>',
 			'#include <color_pars_fragment>',
 			'#include <uv_pars_fragment>',
 			'#include <uv2_pars_fragment>',
@@ -526,6 +529,7 @@ THREE.ShaderLib = {
 			"#endif",
 
 			'#include <common>',
+			'#include <encodings>',
 			'#include <color_pars_fragment>',
 			'#include <uv_pars_fragment>',
 			'#include <uv2_pars_fragment>',
@@ -630,6 +634,7 @@ THREE.ShaderLib = {
 			"uniform float opacity;",
 
 			'#include <common>',
+			'#include <encodings>',
 			'#include <color_pars_fragment>',
 			'#include <map_particle_pars_fragment>',
 			'#include <fog_pars_fragment>',