Moved gaussianPdf out of core.

examples/js/postprocessing/UnrealBloomPass.js

@@ -248,6 +248,9 @@ THREE.UnrealBloomPass.prototype = Object.assign( Object.create( THREE.Pass.proto
 				uniform vec2 texSize;\
 				uniform vec2 direction;\
 				\
+				float gaussianPdf(in float x, in float sigma) {\
+					return 0.39894 * exp( -0.5 * x * x/( sigma * sigma))/sigma;\
+				}\
 				void main() {\n\
 					vec2 invSize = 1.0 / texSize;\
 					float fSigma = float(SIGMA);\

src/renderers/shaders/ShaderChunk/common.glsl

@@ -72,9 +72,3 @@ vec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 poi
 	return lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;
 
 }
-
-float gaussianPdf(in float x, in float sigma) {
-
-	return 0.39894 * exp( -0.5 * x * x/( sigma * sigma))/sigma;
-
-}