diff --git a/src/renderers/shaders/ShaderChunk/fog_fragment.glsl b/src/renderers/shaders/ShaderChunk/fog_fragment.glsl
index 8307a32478817b..22151b85de386d 100644
--- a/src/renderers/shaders/ShaderChunk/fog_fragment.glsl
+++ b/src/renderers/shaders/ShaderChunk/fog_fragment.glsl
@@ -1,5 +1,7 @@
 #ifdef USE_FOG
 
+	float fogDepth = length(fogPosition);
+
 	#ifdef FOG_EXP2
 
 		float fogFactor = whiteCompliment( exp2( - fogDensity * fogDensity * fogDepth * fogDepth * LOG2 ) );
diff --git a/src/renderers/shaders/ShaderChunk/fog_pars_fragment.glsl b/src/renderers/shaders/ShaderChunk/fog_pars_fragment.glsl
index 26c4093c6db3f1..8b78270a8f4c13 100644
--- a/src/renderers/shaders/ShaderChunk/fog_pars_fragment.glsl
+++ b/src/renderers/shaders/ShaderChunk/fog_pars_fragment.glsl
@@ -1,7 +1,7 @@
 #ifdef USE_FOG
 
 	uniform vec3 fogColor;
-	varying float fogDepth;
+	varying vec3 fogPosition;
 
 	#ifdef FOG_EXP2
 
diff --git a/src/renderers/shaders/ShaderChunk/fog_pars_vertex.glsl b/src/renderers/shaders/ShaderChunk/fog_pars_vertex.glsl
index d27a1a1ea5f4d6..91a42390eba3c2 100644
--- a/src/renderers/shaders/ShaderChunk/fog_pars_vertex.glsl
+++ b/src/renderers/shaders/ShaderChunk/fog_pars_vertex.glsl
@@ -1,5 +1,5 @@
 #ifdef USE_FOG
 
-  varying float fogDepth;
+  varying vec3 fogPosition;
 
 #endif
diff --git a/src/renderers/shaders/ShaderChunk/fog_vertex.glsl b/src/renderers/shaders/ShaderChunk/fog_vertex.glsl
index 4ac023c0590d58..6b741cc5dca731 100644
--- a/src/renderers/shaders/ShaderChunk/fog_vertex.glsl
+++ b/src/renderers/shaders/ShaderChunk/fog_vertex.glsl
@@ -1,4 +1,4 @@
 
 #ifdef USE_FOG
-fogDepth = -mvPosition.z;
+fogPosition = mvPosition.xyz;
 #endif
\ No newline at end of file