From d715c173f984493a107ebf4082e0753214ac1d0c Mon Sep 17 00:00:00 2001
From: Bixilon <bixilon@bixilon.de>
Date: Mon, 3 May 2021 14:33:49 +0200
Subject: [PATCH] fix possible rendering crash

---
 .../de/bixilon/minosoft/gui/rendering/chunk/WorldRenderer.kt     | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/chunk/WorldRenderer.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/chunk/WorldRenderer.kt
index 05d686538..4f957c8ed 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/chunk/WorldRenderer.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/chunk/WorldRenderer.kt
@@ -184,6 +184,7 @@ class WorldRenderer(
 
     override fun draw() {
         shader.use()
+        val visibleChunks = visibleChunks.toSynchronizedMap()
 
         for ((_, map) in visibleChunks) {
             for ((_, mesh) in map) {