From 3aefeb98b42d960182437d76698abee78c0184ea Mon Sep 17 00:00:00 2001
From: James Seibel <jeseibel@gondtc.com>
Date: Tue, 21 Apr 2026 21:37:14 -0500
Subject: [PATCH] Maybe fix native GL crash due to buffer free

---
 .../common/render/openGl/GlDhMetaRenderer.java              | 2 --
 .../render/openGl/terrain/GlDhTerrainShaderProgram.java     | 6 ++++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/common/src/main/java/com/seibel/distanthorizons/common/render/openGl/GlDhMetaRenderer.java b/common/src/main/java/com/seibel/distanthorizons/common/render/openGl/GlDhMetaRenderer.java
index a2eb63640..ebc78b50e 100644
--- a/common/src/main/java/com/seibel/distanthorizons/common/render/openGl/GlDhMetaRenderer.java
+++ b/common/src/main/java/com/seibel/distanthorizons/common/render/openGl/GlDhMetaRenderer.java
@@ -10,7 +10,6 @@ import com.seibel.distanthorizons.common.render.openGl.glObject.GLProxy;
 import com.seibel.distanthorizons.common.render.openGl.glObject.GlDhFramebuffer;
 import com.seibel.distanthorizons.common.render.openGl.glObject.texture.*;
 import com.seibel.distanthorizons.common.render.openGl.postProcessing.apply.GlDhApplyShader;
-import com.seibel.distanthorizons.common.render.openGl.terrain.GlDhTerrainShaderProgram;
 import com.seibel.distanthorizons.common.wrappers.minecraft.MinecraftGLWrapper;
 import com.seibel.distanthorizons.common.wrappers.misc.LightMapWrapper;
 import com.seibel.distanthorizons.core.config.Config;
@@ -22,7 +21,6 @@ import com.seibel.distanthorizons.core.render.DhApiRenderProxy;
 import com.seibel.distanthorizons.core.render.RenderParams;
 import com.seibel.distanthorizons.core.wrapperInterfaces.minecraft.IMinecraftRenderWrapper;
 import com.seibel.distanthorizons.core.wrapperInterfaces.misc.ILightMapWrapper;
-import com.seibel.distanthorizons.core.wrapperInterfaces.modAccessor.AbstractOptifineAccessor;
 import com.seibel.distanthorizons.core.wrapperInterfaces.modAccessor.IOptifineAccessor;
 import com.seibel.distanthorizons.core.wrapperInterfaces.render.renderPass.IDhMetaRenderer;
 import com.seibel.distanthorizons.coreapi.DependencyInjection.ApiEventInjector;
diff --git a/common/src/main/java/com/seibel/distanthorizons/common/render/openGl/terrain/GlDhTerrainShaderProgram.java b/common/src/main/java/com/seibel/distanthorizons/common/render/openGl/terrain/GlDhTerrainShaderProgram.java
index 7dc7dd049..408ec4efe 100644
--- a/common/src/main/java/com/seibel/distanthorizons/common/render/openGl/terrain/GlDhTerrainShaderProgram.java
+++ b/common/src/main/java/com/seibel/distanthorizons/common/render/openGl/terrain/GlDhTerrainShaderProgram.java
@@ -311,6 +311,12 @@ public class GlDhTerrainShaderProgram extends GlShaderProgram implements IDhApiS
 			for (int lodIndex = 0; lodIndex < bufferContainers.size(); lodIndex++)
 			{
 				LodBufferContainer bufferContainer = bufferContainers.get(lodIndex);
+				if (!bufferContainer.buffersUploaded)
+				{
+					// make sure we don't accidentally try
+					// rendering a buffer that is (or is going to be) freed 
+					continue;
+				}
 				
 				// set uniforms and fire events
 				{