From 1e7b199660a3f8a683ee4078e012738ab436b354 Mon Sep 17 00:00:00 2001
From: mcrcortex <18544518+MCRcortex@users.noreply.github.com>
Date: Tue, 23 Dec 2025 10:42:17 +1000
Subject: [PATCH] more occupancy

---
 .../client/core/rendering/building/BuiltSection.java  | 11 ++++++++---
 .../core/rendering/building/RenderDataFactory.java    |  8 +++++++-
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/src/main/java/me/cortex/voxy/client/core/rendering/building/BuiltSection.java b/src/main/java/me/cortex/voxy/client/core/rendering/building/BuiltSection.java
index 64e3e035..4032ce0a 100644
--- a/src/main/java/me/cortex/voxy/client/core/rendering/building/BuiltSection.java
+++ b/src/main/java/me/cortex/voxy/client/core/rendering/building/BuiltSection.java
@@ -13,9 +13,10 @@ public final class BuiltSection {
     public final int aabb;
     public final MemoryBuffer geometryBuffer;
     public final int[] offsets;
+    public final MemoryBuffer occupancy;
 
     private BuiltSection(long position, byte children) {
-        this(position, children, -1, null, null);
+        this(position, children, -1, null, null, null);
     }
 
     public static BuiltSection empty(long position) {
@@ -25,7 +26,7 @@ public final class BuiltSection {
         return new BuiltSection(position, children);
     }
 
-    public BuiltSection(long position, byte childExistence, int aabb, MemoryBuffer geometryBuffer, int[] offsets) {
+    public BuiltSection(long position, byte childExistence, int aabb, MemoryBuffer geometryBuffer, int[] offsets, MemoryBuffer occupancy) {
         this.position = position;
         this.childExistence = childExistence;
         this.aabb = aabb;
@@ -39,16 +40,20 @@ public final class BuiltSection {
                 }
             }
         }
+        this.occupancy = occupancy;
     }
 
     public BuiltSection clone() {
-        return new BuiltSection(this.position, this.childExistence, this.aabb, this.geometryBuffer!=null?this.geometryBuffer.copy():null, this.offsets!=null?Arrays.copyOf(this.offsets, this.offsets.length):null);
+        return new BuiltSection(this.position, this.childExistence, this.aabb, this.geometryBuffer!=null?this.geometryBuffer.copy():null, this.offsets!=null?Arrays.copyOf(this.offsets, this.offsets.length):null, this.occupancy!=null?this.occupancy.copy():null);
     }
 
     public void free() {
         if (this.geometryBuffer != null) {
             this.geometryBuffer.free();
         }
+        if (this.occupancy != null) {
+            this.occupancy.free();
+        }
     }
 
     public boolean isEmpty() {
diff --git a/src/main/java/me/cortex/voxy/client/core/rendering/building/RenderDataFactory.java b/src/main/java/me/cortex/voxy/client/core/rendering/building/RenderDataFactory.java
index 3080a2db..7375aa8e 100644
--- a/src/main/java/me/cortex/voxy/client/core/rendering/building/RenderDataFactory.java
+++ b/src/main/java/me/cortex/voxy/client/core/rendering/building/RenderDataFactory.java
@@ -1698,7 +1698,13 @@ public class RenderDataFactory {
         aabb |= (this.maxY-this.minY-1)<<20;
         aabb |= (this.maxZ-this.minZ-1)<<25;
 
-        return new BuiltSection(section.key, section.getNonEmptyChildren(), aabb, buff, offsets);
+        MemoryBuffer occupancy = null;
+        if (BUILD_OCCUPANCY_SET && !this.occupancy.isEmpty()) {
+            occupancy = new MemoryBuffer(this.occupancy.writeSize());
+            this.occupancy.write(occupancy.address, false);
+        }
+
+        return new BuiltSection(section.key, section.getNonEmptyChildren(), aabb, buff, offsets, occupancy);
     }
 
     public void free() {