From 7ced041f650574ca209ba0b25e6d3f904264f97b Mon Sep 17 00:00:00 2001
From: Alex <42661490+ThatRedox@users.noreply.github.com>
Date: Sat, 14 Jan 2023 01:22:48 -0800
Subject: [PATCH] Don't apply sky fog if fog mode is uniform and density is 0.
 (#1538)

---
 .../se/llbit/chunky/renderer/scene/Fog.java   | 22 ++++++++++---------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/chunky/src/java/se/llbit/chunky/renderer/scene/Fog.java b/chunky/src/java/se/llbit/chunky/renderer/scene/Fog.java
index 16d413fbb3..3e9adc09e1 100644
--- a/chunky/src/java/se/llbit/chunky/renderer/scene/Fog.java
+++ b/chunky/src/java/se/llbit/chunky/renderer/scene/Fog.java
@@ -59,17 +59,19 @@ private static double clampDy(double dy) {
 
   public void addSkyFog(Ray ray, Vector4 scatterLight) {
     if (mode == FogMode.UNIFORM) {
-      double fog;
-      if (ray.d.y > 0) {
-        fog = 1 - ray.d.y;
-        fog *= fog;
-      } else {
-        fog = 1;
+      if (uniformDensity > 0.0) {
+        double fog;
+        if (ray.d.y > 0) {
+          fog = 1 - ray.d.y;
+          fog *= fog;
+        } else {
+          fog = 1;
+        }
+        fog *= skyFogDensity;
+        ray.color.x = (1 - fog) * ray.color.x + fog * fogColor.x;
+        ray.color.y = (1 - fog) * ray.color.y + fog * fogColor.y;
+        ray.color.z = (1 - fog) * ray.color.z + fog * fogColor.z;
       }
-      fog *= skyFogDensity;
-      ray.color.x = (1 - fog) * ray.color.x + fog * fogColor.x;
-      ray.color.y = (1 - fog) * ray.color.y + fog * fogColor.y;
-      ray.color.z = (1 - fog) * ray.color.z + fog * fogColor.z;
     } else if (mode == FogMode.LAYERED) {
       double dy = ray.d.y;
       double y1 = ray.o.y;