secure setLightmapTextureCoords

src/main/java/com/falsepattern/falsetweaks/mixin/mixins/client/threadedupdates/OpenGLHelperMixin.java

@@ -0,0 +1,46 @@
+/*
+ * This file is part of FalseTweaks.
+ *
+ * Copyright (C) 2022-2024 FalsePattern
+ * All Rights Reserved
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * FalseTweaks is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FalseTweaks is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FalseTweaks. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.falsepattern.falsetweaks.mixin.mixins.client.threadedupdates;
+
+import com.falsepattern.falsetweaks.modules.threadedupdates.ThreadedChunkUpdateHelper;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import net.minecraft.client.renderer.OpenGlHelper;
+
+@Mixin(value = OpenGlHelper.class,
+       priority = 900)
+public abstract class OpenGLHelperMixin {
+    @Inject(method = "setLightmapTextureCoords",
+            at = @At("HEAD"),
+            cancellable = true,
+            require = 1)
+    private static void onlyIfMainThread(int target, float x, float y, CallbackInfo ci) {
+        if (!ThreadedChunkUpdateHelper.isMainThread()) {
+            ci.cancel();
+        }
+    }
+}

src/main/java/com/falsepattern/falsetweaks/mixin/plugin/standard/Mixin.java

@@ -157,6 +157,7 @@ public enum Mixin implements IMixin {
 
     //region Threaded Chunk Updates
     ThreadedUpdates_GameSettings(Side.CLIENT, THREADING, "threadedupdates.GameSettingsMixin"),
+    ThreadedUpdates_OpenGLHelperMixin(Side.CLIENT, THREADING, "threadedupdates.OpenGLHelperMixin"),
     ThreadedUpdates_ChunkProviderClientMixin(Side.CLIENT, THREADING, "threadedupdates.ChunkProviderClientMixin"),
     ThreadedUpdates_ForgeHooksClientMixin(Side.CLIENT, THREADING, "threadedupdates.ForgeHooksClientMixin"),
     ThreadedUpdates_RenderBlocksMixin(Side.CLIENT, THREADING, "threadedupdates.RenderBlocksMixin"),

src/main/java/com/falsepattern/falsetweaks/modules/threadedupdates/ThreadedChunkUpdateHelper.java

@@ -264,9 +264,10 @@ public static boolean canBlockBeRenderedOffThread(Block block, int pass, int ren
     }
 
     public static boolean isMainThread() {
+        val thread = Thread.currentThread();
         if (MAIN_THREAD == null)
-            throw new AssertionError("Main thread not setup, mad.");
-        return Thread.currentThread() == MAIN_THREAD;
+            return thread.getName().equals("Client thread");
+        return thread == MAIN_THREAD;
     }
 
     private static String worldRendererToString(WorldRenderer wr) {