Fix occlusion culling not respecting cylindrical fog

CaffeineMC · Aug 5, 2023 · cc6e600 · cc6e600
1 parent b13b182
commit cc6e600
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/main/java/me/jellysquid/mods/sodium/client/render/chunk/occlusion/OcclusionCuller.java b/src/main/java/me/jellysquid/mods/sodium/client/render/chunk/occlusion/OcclusionCuller.java
@@ -120,8 +120,9 @@ private static double getClosestVertexDistanceToCamera(Vec3d camera, ChunkSectio
         double distanceY = camera.y - (section.getCenterY() + offsetY);
         double distanceZ = camera.z - (section.getCenterZ() + offsetZ);
 
-        // squared distance: (x^2)+(y^2)+(z^2)
-        return (distanceX * distanceX) + (distanceY * distanceY) + (distanceZ * distanceZ);
+        // vanilla's "cylindrical fog" algorithm
+        // max(length(distance.xz), abs(distance.y))
+        return Math.max((distanceX * distanceX) + (distanceZ * distanceZ), Math.abs(distanceY));
     }
 
     private void init(ArrayDeque<RenderSection> queue,