From 8e293f13fbc726b6acb5073201d51252a38783e4 Mon Sep 17 00:00:00 2001
From: SpacEagle17 <46494907+SpacEagle17@users.noreply.github.com>
Date: Thu, 23 Jul 2026 03:02:55 +0200
Subject: [PATCH] Fix at_midBlock at high coordinates (#1949)

---
 .../java/net/coderbot/iris/vertices/ExtendedDataHelper.java | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/main/java/net/coderbot/iris/vertices/ExtendedDataHelper.java b/src/main/java/net/coderbot/iris/vertices/ExtendedDataHelper.java
index 842ef8b83..84d8a1c10 100644
--- a/src/main/java/net/coderbot/iris/vertices/ExtendedDataHelper.java
+++ b/src/main/java/net/coderbot/iris/vertices/ExtendedDataHelper.java
@@ -12,9 +12,9 @@ public final class ExtendedDataHelper {
 
 	public static int computeMidBlock(float x, float y, float z, int localPosX, int localPosY, int localPosZ) {
 		return packMidBlock(
-				localPosX + 0.5f - x,
-				localPosY + 0.5f - y,
-				localPosZ + 0.5f - z
+            (localPosX & 0xFFFF) + 0.5f - x,
+			(localPosY & 0xFFFF) + 0.5f - y,
+			(localPosZ & 0xFFFF) + 0.5f - z
 		);
 	}
 }