FOG_EXP2: Modify order of multiplications to avoid possible over-/underflow on mediump

EliasHasle · EliasHasle · commit 7b7cd007a004 · 2023-03-24T12:35:55.000+01:00
diff --git a/src/renderers/shaders/ShaderChunk/fog_fragment.glsl.js b/src/renderers/shaders/ShaderChunk/fog_fragment.glsl.js
@@ -3,7 +3,7 @@ export default /* glsl */`
 
 	#ifdef FOG_EXP2
 
-		float fogFactor = 1.0 - exp( - fogDensity * fogDensity * vFogDepth * vFogDepth );
+		float fogFactor = 1.0 - exp( - pow2( fogDensity * vFogDepth ) );
 
 	#else
 
