Fix missing imports for MC 1.19 and below

common/src/main/java/com/seibel/distanthorizons/common/wrappers/minecraft/MinecraftRenderWrapper.java

@@ -39,6 +39,7 @@ import com.seibel.distanthorizons.core.logging.DhLoggerBuilder;
 import com.seibel.distanthorizons.core.wrapperInterfaces.misc.ILightMapWrapper;
 
 #if MC_VER < MC_1_19_4
+import org.joml.Matrix4f;
 import org.joml.Vector3f;
 #else
 import org.joml.Matrix4f;

fabric/src/main/java/com/seibel/distanthorizons/fabric/FabricClientProxy.java

@@ -53,6 +53,7 @@ import net.minecraft.client.gui.screens.TitleScreen;
 import java.nio.FloatBuffer;
 #endif
 import java.util.HashSet;
+import java.util.concurrent.ThreadPoolExecutor;
 
 import net.minecraft.client.multiplayer.ClientLevel;
 import net.minecraft.world.InteractionResult;
@@ -132,7 +133,7 @@ public class FabricClientProxy implements AbstractModInitializer.IEventProxy
 					// executor to prevent locking up the render/event thread
 					// if the getChunk() takes longer than expected 
 					// (which can be caused by certain mods) 
-					var executor = ThreadPoolUtil.getFileHandlerExecutor();
+					ThreadPoolExecutor executor = ThreadPoolUtil.getFileHandlerExecutor();
 					if (executor != null)
 					{
 						executor.execute(() ->
@@ -172,7 +173,7 @@ public class FabricClientProxy implements AbstractModInitializer.IEventProxy
 						// executor to prevent locking up the render/event thread
 						// if the getChunk() takes longer than expected 
 						// (which can be caused by certain mods) 
-						var executor = ThreadPoolUtil.getFileHandlerExecutor();
+						ThreadPoolExecutor executor = ThreadPoolUtil.getFileHandlerExecutor();
 						if (executor != null)
 						{
 							executor.execute(() ->

fabric/src/main/java/com/seibel/distanthorizons/fabric/mixins/client/MixinLevelRenderer.java

@@ -22,6 +22,7 @@ package com.seibel.distanthorizons.fabric.mixins.client;
 import com.mojang.blaze3d.vertex.PoseStack;
 #if MC_VER < MC_1_19_4
 import com.mojang.math.Matrix4f;
+import org.lwjgl.opengl.GL32;
 #else
 import org.joml.Matrix4f;
 #endif
@@ -93,7 +94,7 @@ public class MixinLevelRenderer
 		#if MC_VER == MC_1_16_5
 	    // get the matrices from the OpenGL fixed pipeline
 	    float[] mcProjMatrixRaw = new float[16];
-	    GL15.glGetFloatv(GL15.GL_PROJECTION_MATRIX, mcProjMatrixRaw);
+	    GL32.glGetFloatv(GL32.GL_PROJECTION_MATRIX, mcProjMatrixRaw);
 	    Mat4f mcProjectionMatrix = new Mat4f(mcProjMatrixRaw);
 	    mcProjectionMatrix.transpose();
 	    

forge/src/main/java/com/seibel/distanthorizons/forge/ForgeClientProxy.java

@@ -27,6 +27,7 @@ import com.seibel.distanthorizons.core.api.internal.ClientApi;
 import com.seibel.distanthorizons.core.api.internal.SharedApi;
 import com.seibel.distanthorizons.core.dependencyInjection.SingletonInjector;
 import com.seibel.distanthorizons.core.logging.DhLoggerBuilder;
+import com.seibel.distanthorizons.core.util.threading.ThreadPoolUtil;
 import com.seibel.distanthorizons.core.wrapperInterfaces.chunk.IChunkWrapper;
 
 import com.seibel.distanthorizons.core.wrapperInterfaces.minecraft.IMinecraftClientWrapper;
@@ -65,6 +66,8 @@ import net.minecraftforge.event.TickEvent;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
 import org.lwjgl.opengl.GL32;
 
+import java.util.concurrent.ThreadPoolExecutor;
+
 /**
  * This handles all events sent to the client,
  * and is the starting point for most of the mod.
@@ -186,8 +189,15 @@ public class ForgeClientProxy implements AbstractModInitializer.IEventProxy
 		LevelAccessor level = event.getLevel();
 		#endif
 		
-		ChunkAccess chunk = level.getChunk(event.getPos());
-		this.onBlockChangeEvent(level, chunk);
+		ThreadPoolExecutor executor = ThreadPoolUtil.getFileHandlerExecutor();
+		if (executor != null)
+		{
+			executor.execute(() ->
+			{
+				ChunkAccess chunk = level.getChunk(event.getPos());
+				this.onBlockChangeEvent(level, chunk);
+			});
+		}
 	}
 	@SubscribeEvent
 	public void leftClickBlockEvent(PlayerInteractEvent.LeftClickBlock event)
@@ -205,8 +215,15 @@ public class ForgeClientProxy implements AbstractModInitializer.IEventProxy
 		LevelAccessor level = event.getLevel();
 		#endif
 		
-		ChunkAccess chunk = level.getChunk(event.getPos());
-		this.onBlockChangeEvent(level, chunk);
+		ThreadPoolExecutor executor = ThreadPoolUtil.getFileHandlerExecutor();
+		if (executor != null)
+		{
+			executor.execute(() ->
+			{
+				ChunkAccess chunk = level.getChunk(event.getPos());
+				this.onBlockChangeEvent(level, chunk);
+			});
+		}
 	}
 	private void onBlockChangeEvent(LevelAccessor level, ChunkAccess chunk)
 	{

forge/src/main/java/com/seibel/distanthorizons/forge/mixins/client/MixinLevelRenderer.java

@@ -22,6 +22,10 @@ package com.seibel.distanthorizons.forge.mixins.client;
 import com.mojang.blaze3d.vertex.PoseStack;
 #if MC_VER < MC_1_19_4
 import com.mojang.math.Matrix4f;
+import net.minecraft.client.Camera;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.GameRenderer;
+import net.minecraft.client.renderer.LightTexture;
 #else
 import net.minecraft.client.Camera;
 import net.minecraft.client.Minecraft;