Correct block lighting with Forge's internals

now lighting in nether is absolutely identical to vanilla's, there is no skylight checks in MC's code on 1.12, maybe we should check this in Angelica too?:

src/main/java/me/jellysquid/mods/sodium/client/world/WorldSlice.java

@@ -23,6 +23,7 @@
 import net.minecraft.world.chunk.Chunk;
 import net.minecraft.world.chunk.storage.ExtendedBlockStorage;
 import net.minecraft.world.gen.structure.StructureBoundingBox;
+import net.minecraftforge.client.model.pipeline.LightUtil;
 
 import java.util.Arrays;
 import java.util.Map;
@@ -440,26 +441,11 @@ public ChunkSectionPos getOrigin() {
         return this.origin;
     }
 
-    // Modern checks if the sky is darkened, which only happens in the nether. However, I think 1.7.10's hasNoSky is
-    // close enough and possibly a behavior change between versions. I also don't know why it's rotationally asymmetric
     public float getBrightness(EnumFacing direction, boolean shaded) {
         if (!shaded) {
             return !world.provider.hasSkyLight() ? 0.9f : 1.0f;
         }
-        switch (direction) {
-            case DOWN:
-                return !world.provider.hasSkyLight() ? 0.9f : 0.5f;
-            case UP:
-                return !world.provider.hasSkyLight() ? 0.9f : 1.0f;
-            case NORTH:
-            case SOUTH:
-                return 0.8f;
-            case WEST:
-            case EAST:
-                return 0.6f;
-            default:
-                return 1.0f;
-        }
+        return LightUtil.diffuseLight(direction);
     }
 
     // [VanillaCopy] PalettedContainer#toIndex