NEC error screen

src/main/java/net/coderbot/iris/Iris.java

@@ -71,6 +71,7 @@ public class Iris {
 	private static ShaderPack currentPack;
 	private static String currentPackName;
 	private static boolean sodiumInvalid;
+	private static boolean hasNEC;
 	private static boolean sodiumInstalled;
 	private static boolean initialized;
 
@@ -91,7 +92,7 @@ public class Iris {
 	private static UpdateChecker updateChecker;
 	private static boolean fallback;
 
-	/**
+    /**
 	 * Called very early on in Minecraft initialization. At this point we *cannot* safely access OpenGL, but we can do
 	 * some very basic setup, config loading, and environment checks.
 	 *
@@ -114,6 +115,8 @@ public void onEarlyInitialize() {
 				}
 		);
 
+		hasNEC = FabricLoader.getInstance().isModLoaded("notenoughcrashes");
+
 		ModContainer iris = FabricLoader.getInstance().getModContainer(MODID)
 				.orElseThrow(() -> new IllegalStateException("Couldn't find the mod container for Iris"));
 
@@ -720,6 +723,10 @@ public static boolean isSodiumInstalled() {
 		return sodiumInstalled;
 	}
 
+	public static boolean hasNotEnoughCrashes() {
+		return hasNEC;
+	}
+
 	public static Path getShaderpacksDirectory() {
 		if (shaderpacksDirectory == null) {
 			shaderpacksDirectory = FabricLoader.getInstance().getGameDir().resolve("shaderpacks");

src/main/java/net/coderbot/iris/mixin/MixinCrashReport.java

@@ -29,5 +29,13 @@ private void fillSystemDetails(CallbackInfo info) {
             });
             return sb.toString();
         });
+
+		getSystemDetails().setDetail("NEC status", () -> {
+			if (Iris.hasNotEnoughCrashes()) {
+				return "Has NEC: INVALID";
+			} else {
+				return "No NEC detected";
+			}
+		});
     }
 }

src/main/java/net/coderbot/iris/mixin/MixinTitleScreen.java

@@ -1,13 +1,20 @@
 package net.coderbot.iris.mixin;
 
+import com.google.common.collect.ImmutableList;
 import net.coderbot.iris.Iris;
 import net.coderbot.iris.compat.sodium.SodiumVersionCheck;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.ChatFormatting;
 import net.minecraft.Util;
+import net.minecraft.client.GraphicsStatus;
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.screens.AlertScreen;
 import net.minecraft.client.gui.screens.ConfirmScreen;
+import net.minecraft.client.gui.screens.PopupScreen;
+import net.minecraft.client.gui.screens.Screen;
 import net.minecraft.client.gui.screens.TitleScreen;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.chat.TextComponent;
 import net.minecraft.network.chat.TranslatableComponent;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
@@ -18,9 +25,13 @@
 import java.net.URISyntaxException;
 
 @Mixin(TitleScreen.class)
-public class MixinTitleScreen {
+public class MixinTitleScreen extends Screen {
 	private static boolean iris$hasFirstInit;
 
+	protected MixinTitleScreen(Component arg) {
+		super(arg);
+	}
+
 	@Inject(method = "init", at = @At("RETURN"))
 	public void iris$showSodiumIncompatScreen(CallbackInfo ci) {
 		if (iris$hasFirstInit) {
@@ -35,6 +46,20 @@ public class MixinTitleScreen {
 			reason = "iris.sodium.failure.reason.notFound";
 		} else if (Iris.isSodiumInvalid()) {
 			reason = "iris.sodium.failure.reason.incompatible";
+		} else if (true) {
+			Minecraft.getInstance().setScreen(new ConfirmScreen(
+				bool -> {
+					if (bool) {
+						Minecraft.getInstance().setScreen(this);
+					} else {
+						Minecraft.getInstance().stop();
+					}
+				},
+				new TranslatableComponent("iris.nec.failure.title", Iris.MODNAME).withStyle(ChatFormatting.BOLD, ChatFormatting.RED),
+				new TranslatableComponent("iris.nec.failure.description"),
+				new TranslatableComponent("options.graphics.warning.accept").withStyle(ChatFormatting.RED),
+				new TranslatableComponent("menu.quit").withStyle(ChatFormatting.BOLD)));
+			return;
 		} else {
 			Iris.onLoadingComplete();
 

src/main/resources/assets/iris/lang/en_us.json

@@ -16,6 +16,8 @@
   "iris.sodium.failure.download": "Download Sodium",
   "iris.sodium.failure.reason.notFound": "Iris requires Sodium for good performance, but Sodium is not installed. Please download Sodium, place it in your mods folder, and re-launch the game.",
   "iris.sodium.failure.reason.incompatible": "Iris requires Sodium for good performance, but an incompatible version was found. Please download the correct version of Sodium, place it in your mods folder, remove the incorrect version, and re-launch the game.",
+  "iris.nec.failure.title": "[%s] Not Enough Crashes detected!",
+  "iris.nec.failure.description": "Not Enough Crashes can severely break the game while handling crashes, and does not provide accurate results.\nGood alternatives are MixinTrace and Crafty Crashes, which can identify the cause of a crash more reliably and does not put the game in an invalid state.",
   "iris.unsupported.irisorpc": "Iris or your PC",
   "iris.unsupported.iris": "Iris",
   "iris.unsupported.pc": "your PC",