Better config/backend to account for multiple engines

- Rename probably too many things
 - Needs to be tested with Optifine

src/main/java/com/jozufozu/flywheel/Flywheel.java

@@ -3,10 +3,12 @@ package com.jozufozu.flywheel;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
+import com.jozufozu.flywheel.config.EngineArgument;
 import com.jozufozu.flywheel.config.FlwCommands;
 import com.jozufozu.flywheel.config.FlwConfig;
 import com.jozufozu.flywheel.config.FlwPackets;
 
+import net.minecraft.commands.synchronization.ArgumentTypes;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.common.MinecraftForge;
@@ -39,5 +41,6 @@ public class Flywheel {
 
     private void setup(final FMLCommonSetupEvent event) {
 		FlwPackets.registerPackets();
+		ArgumentTypes.register("flywheel:engine", EngineArgument.class, EngineArgument.SERIALIZER);
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/Backend.java

@@ -17,13 +17,11 @@ import com.jozufozu.flywheel.api.FlywheelWorld;
 import com.jozufozu.flywheel.api.InstanceData;
 import com.jozufozu.flywheel.api.struct.StructType;
 import com.jozufozu.flywheel.backend.gl.versioned.GlCompat;
-import com.jozufozu.flywheel.backend.instancing.InstancedRenderDispatcher;
 import com.jozufozu.flywheel.config.FlwConfig;
 import com.jozufozu.flywheel.config.FlwEngine;
 import com.jozufozu.flywheel.core.shader.spec.ProgramSpec;
 
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.multiplayer.ClientLevel;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.LevelAccessor;
@@ -32,20 +30,18 @@ public class Backend {
 	public static final Logger log = LogManager.getLogger(Backend.class);
 
 	protected static final Backend INSTANCE = new Backend();
-	private FlwEngine engine;
-
 	public static Backend getInstance() {
 		return INSTANCE;
 	}
 
-	public final Loader loader;
+	private FlwEngine engine;
 
 	public GLCapabilities capabilities;
 	public GlCompat compat;
 
-	private boolean instancedArrays;
 	private boolean enabled;
 
+	public final Loader loader;
 	private final List<ShaderContext<?>> contexts = new ArrayList<>();
 	private final Map<ResourceLocation, StructType<?>> materialRegistry = new HashMap<>();
 	private final Map<ResourceLocation, ProgramSpec> programSpecRegistry = new HashMap<>();
@@ -61,16 +57,11 @@ public class Backend {
 	 * (Meshlet, MDI, GL31 Draw Instanced are planned), this will name which one is in use.
 	 */
 	public String getBackendDescriptor() {
-		if (enabled) {
-			ClientLevel level = Minecraft.getInstance().level;
+		return engine.getProperName();
+	}
 
-			if (level == null) {
-				return "Invalid";
-			}
-			return InstancedRenderDispatcher.getEngineName(level);
-		}
-
-		return "Disabled";
+	public FlwEngine getEngine() {
+		return engine;
 	}
 
 	/**
@@ -111,41 +102,22 @@ public class Backend {
 		return programSpecRegistry.get(name);
 	}
 
-	public boolean available() {
-		return canUseVBOs();
-	}
-
-	public boolean canUseInstancing() {
-		return enabled && instancedArrays;
-	}
-
-	public boolean canUseVBOs() {
-		return enabled && gl20();
-	}
-
-	public boolean gl33() {
-		return capabilities.OpenGL33;
-	}
-
-	public boolean gl20() {
-		return capabilities.OpenGL20;
-	}
-
 	public void refresh() {
 		OptifineHandler.refresh();
+		boolean usingShaders = OptifineHandler.usingShaders();
+
 		capabilities = GL.createCapabilities();
 
 		compat = new GlCompat(capabilities);
 
-		instancedArrays = compat.instancedArraysSupported();
+		engine = FlwConfig.get()
+				.getEngine();
 
-		FlwConfig config = FlwConfig.get();
-		enabled = config.enabled() && !OptifineHandler.usingShaders();
-		engine = config.client.engine.get();
-	}
-
-	public boolean canUseInstancing(@Nullable Level world) {
-		return canUseInstancing() && isFlywheelWorld(world);
+		enabled = switch (engine) {
+			case OFF -> false;
+			case BATCHING -> true;
+			case INSTANCING -> !usingShaders && compat.instancedArraysSupported();
+		};
 	}
 
 	public Collection<StructType<?>> allMaterials() {
@@ -160,6 +132,14 @@ public class Backend {
 		return contexts;
 	}
 
+	public static boolean isOn() {
+		return getInstance().enabled;
+	}
+
+	public static boolean canUseInstancing(@Nullable Level world) {
+		return isOn() && isFlywheelWorld(world);
+	}
+
 	/**
 	 * Used to avoid calling Flywheel functions on (fake) worlds that don't specifically support it.
 	 */
@@ -184,7 +164,7 @@ public class Backend {
 	/**
 	 * INTERNAL USE ONLY
 	 */
-	public void _clearContexts() {
+	void _clearContexts() {
 		GameStateRegistry.clear();
 		programSpecRegistry.clear();
 		contexts.forEach(ShaderContext::delete);
@@ -194,8 +174,4 @@ public class Backend {
 
 	public static void init() {
 	}
-
-	public FlwEngine getEngine() {
-		return engine;
-	}
 }

src/main/java/com/jozufozu/flywheel/backend/Loader.java

@@ -64,36 +64,34 @@ public class Loader implements ResourceManagerReloadListener {
 	public void onResourceManagerReload(ResourceManager manager) {
 		backend.refresh();
 
-		if (backend.gl20()) {
-			shouldCrash = false;
-			backend._clearContexts();
+		shouldCrash = false;
+		backend._clearContexts();
 
-			Resolver.INSTANCE.invalidate();
-			ModLoader.get()
-					.postEvent(new GatherContextEvent(backend, firstLoad));
+		Resolver.INSTANCE.invalidate();
+		ModLoader.get()
+				.postEvent(new GatherContextEvent(backend, firstLoad));
 
-			ShaderSources sources = new ShaderSources(manager);
+		ShaderSources sources = new ShaderSources(manager);
 
-			loadProgramSpecs(manager);
+		loadProgramSpecs(manager);
 
-			Resolver.INSTANCE.resolve(sources);
+		Resolver.INSTANCE.resolve(sources);
 
-			for (ShaderContext<?> context : backend.allContexts()) {
-				context.load();
-			}
+		for (ShaderContext<?> context : backend.allContexts()) {
+			context.load();
+		}
 
-			if (shouldCrash) {
-				throw new ShaderLoadingException("Could not load all shaders, see log for details");
-			}
+		if (shouldCrash) {
+			throw new ShaderLoadingException("Could not load all shaders, see log for details");
+		}
 
-			Backend.log.info("Loaded all shader programs.");
+		Backend.log.info("Loaded all shader programs.");
 
-			ClientLevel world = Minecraft.getInstance().level;
-			if (Backend.isFlywheelWorld(world)) {
-				// TODO: looks like it might be good to have another event here
-				InstancedRenderDispatcher.resetInstanceWorld(world);
-				CrumblingRenderer.reset();
-			}
+		ClientLevel world = Minecraft.getInstance().level;
+		if (Backend.isFlywheelWorld(world)) {
+			// TODO: looks like it might be good to have another event here
+			InstancedRenderDispatcher.resetInstanceWorld(world);
+			CrumblingRenderer.reset();
 		}
 
 		firstLoad = false;

src/main/java/com/jozufozu/flywheel/backend/instancing/InstanceManager.java

@@ -154,8 +154,7 @@ public abstract class InstanceManager<T> implements InstancingEngine.OriginShift
 	}
 
 	public void add(T obj) {
-		if (!Backend.getInstance()
-				.canUseInstancing()) return;
+		if (!Backend.isOn()) return;
 
 		if (canInstance(obj)) {
 			addInternal(obj);
@@ -163,8 +162,7 @@ public abstract class InstanceManager<T> implements InstancingEngine.OriginShift
 	}
 
 	public void queueAdd(T obj) {
-		if (!Backend.getInstance()
-				.canUseInstancing()) return;
+		if (!Backend.isOn()) return;
 
 		synchronized (queuedAdditions) {
 			queuedAdditions.add(obj);
@@ -172,8 +170,7 @@ public abstract class InstanceManager<T> implements InstancingEngine.OriginShift
 	}
 
 	public void queueUpdate(T obj) {
-		if (!Backend.getInstance()
-				.canUseInstancing()) return;
+		if (!Backend.isOn()) return;
 		synchronized (queuedUpdates) {
 			queuedUpdates.add(obj);
 		}
@@ -191,8 +188,7 @@ public abstract class InstanceManager<T> implements InstancingEngine.OriginShift
 	 * @param obj the object to update.
 	 */
 	public void update(T obj) {
-		if (!Backend.getInstance()
-				.canUseInstancing()) return;
+		if (!Backend.isOn()) return;
 
 		if (canInstance(obj)) {
 			AbstractInstance instance = getInstance(obj);
@@ -213,8 +209,7 @@ public abstract class InstanceManager<T> implements InstancingEngine.OriginShift
 	}
 
 	public void remove(T obj) {
-		if (!Backend.getInstance()
-				.canUseInstancing()) return;
+		if (!Backend.isOn()) return;
 
 		if (canInstance(obj)) {
 			AbstractInstance instance = getInstance(obj);
@@ -231,8 +226,7 @@ public abstract class InstanceManager<T> implements InstancingEngine.OriginShift
 
 	@Nullable
 	protected <I extends T> AbstractInstance getInstance(I obj) {
-		if (!Backend.getInstance()
-				.canUseInstancing()) return null;
+		if (!Backend.isOn()) return null;
 
 		return instances.get(obj);
 	}
@@ -291,8 +285,7 @@ public abstract class InstanceManager<T> implements InstancingEngine.OriginShift
 	}
 
 	protected void addInternal(T obj) {
-		if (!Backend.getInstance()
-				.canUseInstancing()) return;
+		if (!Backend.isOn()) return;
 
 		AbstractInstance instance = instances.get(obj);
 

src/main/java/com/jozufozu/flywheel/backend/instancing/InstanceWorld.java

@@ -40,7 +40,7 @@ public class InstanceWorld {
 				.getEngine();
 
 		switch (engine) {
-		case GL33 -> {
+		case INSTANCING -> {
 			InstancingEngine<WorldProgram> manager = InstancingEngine.builder(Contexts.WORLD)
 					.build(this.taskEngine);
 

src/main/java/com/jozufozu/flywheel/backend/instancing/InstancedRenderDispatcher.java

@@ -41,10 +41,6 @@ public class InstancedRenderDispatcher {
 		getEntities(entity.level).queueUpdate(entity);
 	}
 
-	public static String getEngineName(LevelAccessor world) {
-		return instanceWorlds.get(world).engine.getName();
-	}
-
 	public static InstanceManager<BlockEntity> getTiles(LevelAccessor world) {
 		return instanceWorlds.get(world)
 				.getTileEntityInstanceManager();
@@ -81,8 +77,7 @@ public class InstancedRenderDispatcher {
 		if (event.layer == null) return;
 
 		ClientLevel world = event.getWorld();
-		if (!Backend.getInstance()
-				.canUseInstancing(world)) return;
+		if (!Backend.canUseInstancing(world)) return;
 
 		instanceWorlds.get(world).renderLayer(event);
 	}
@@ -90,8 +85,7 @@ public class InstancedRenderDispatcher {
 	@SubscribeEvent
 	public static void onReloadRenderers(ReloadRenderersEvent event) {
 		ClientLevel world = event.getWorld();
-		if (Backend.getInstance()
-				.canUseInstancing() && world != null) {
+		if (Backend.isOn() && world != null) {
 			resetInstanceWorld(world);
 		}
 	}

src/main/java/com/jozufozu/flywheel/config/BooleanConfig.java

@@ -17,7 +17,6 @@ import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 
 public enum BooleanConfig {
-	ENGINE(() -> BooleanConfig::enabled),
 	NORMAL_OVERLAY(() -> BooleanConfig::normalOverlay),
 	;
 
@@ -52,29 +51,6 @@ public enum BooleanConfig {
 			return null;
 	}
 
-	@OnlyIn(Dist.CLIENT)
-	private static void enabled(BooleanDirective state) {
-		LocalPlayer player = Minecraft.getInstance().player;
-		if (player == null || state == null) return;
-
-		if (state == BooleanDirective.DISPLAY) {
-			Component text = new TextComponent("Flywheel renderer is currently: ").append(boolToText(FlwConfig.get().enabled()));
-			player.displayClientMessage(text, false);
-			return;
-		}
-
-		boolean enabled = state.get();
-		boolean cannotUse = OptifineHandler.usingShaders() && enabled;
-
-		FlwConfig.get().client.enabled.set(enabled);
-
-		Component text = boolToText(FlwConfig.get().enabled()).append(new TextComponent(" Flywheel renderer").withStyle(ChatFormatting.WHITE));
-		Component error = new TextComponent("Flywheel renderer does not support Optifine Shaders").withStyle(ChatFormatting.RED);
-
-		player.displayClientMessage(cannotUse ? error : text, false);
-		Backend.reloadWorldRenderers();
-	}
-
 	@OnlyIn(Dist.CLIENT)
 	private static void normalOverlay(BooleanDirective state) {
 		LocalPlayer player = Minecraft.getInstance().player;

src/main/java/com/jozufozu/flywheel/config/EngineArgument.java

@@ -0,0 +1,69 @@
+package com.jozufozu.flywheel.config;
+
+import java.util.Collection;
+import java.util.concurrent.CompletableFuture;
+import java.util.stream.Stream;
+
+import com.google.gson.JsonObject;
+import com.mojang.brigadier.StringReader;
+import com.mojang.brigadier.arguments.ArgumentType;
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.exceptions.CommandSyntaxException;
+import com.mojang.brigadier.exceptions.Dynamic2CommandExceptionType;
+import com.mojang.brigadier.suggestion.Suggestions;
+import com.mojang.brigadier.suggestion.SuggestionsBuilder;
+
+import net.minecraft.commands.SharedSuggestionProvider;
+import net.minecraft.commands.synchronization.ArgumentSerializer;
+import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.chat.TranslatableComponent;
+
+public class EngineArgument implements ArgumentType<FlwEngine> {
+
+	public static final EngineArgument INSTANCE = new EngineArgument();
+	public static final Serializer SERIALIZER = new Serializer();
+
+	private static final Dynamic2CommandExceptionType INVALID = new Dynamic2CommandExceptionType((found, constants) -> {
+		return new TranslatableComponent("commands.forge.arguments.enum.invalid", constants, found);
+	});
+
+	private EngineArgument() {
+	}
+
+	@Override
+	public FlwEngine parse(StringReader reader) throws CommandSyntaxException {
+		String string = reader.readUnquotedString();
+
+		FlwEngine engine = FlwEngine.byName(string);
+
+		if (engine == null) {
+			throw INVALID.createWithContext(reader, string, FlwEngine.validNames());
+		}
+
+		return engine;
+	}
+
+	public <S> CompletableFuture<Suggestions> listSuggestions(CommandContext<S> context, SuggestionsBuilder builder) {
+		return SharedSuggestionProvider.suggest(FlwEngine.validNames(), builder);
+	}
+
+	@Override
+	public Collection<String> getExamples() {
+		return FlwEngine.validNames();
+	}
+
+	public static class Serializer implements ArgumentSerializer<EngineArgument> {
+		private Serializer() {
+		}
+
+		public void serializeToNetwork(EngineArgument argument, FriendlyByteBuf buffer) {
+		}
+
+		public EngineArgument deserializeFromNetwork(FriendlyByteBuf buffer) {
+			return INSTANCE;
+		}
+
+		public void serializeToJson(EngineArgument argument, JsonObject json) {
+		}
+	}
+}

src/main/java/com/jozufozu/flywheel/config/EngineConfigCommand.java

@@ -10,15 +10,15 @@ import net.minecraftforge.network.PacketDistributor;
 import net.minecraftforge.server.command.EnumArgument;
 
 public class EngineConfigCommand {
-	public ArgumentBuilder<CommandSourceStack, ?> register() {
-		return Commands.literal("engine")
+	public static ArgumentBuilder<CommandSourceStack, ?> register() {
+		return Commands.literal("backend")
 				.executes(context -> {
 					ServerPlayer player = context.getSource()
 							.getPlayerOrException();
 					FlwPackets.channel.send(PacketDistributor.PLAYER.with(() -> player), new SConfigureEnginePacket());
 					return Command.SINGLE_SUCCESS;
 				})
-				.then(Commands.argument("type", EnumArgument.enumArgument(FlwEngine.class))
+				.then(Commands.argument("type", EngineArgument.INSTANCE)
 						.executes(context -> {
 							FlwEngine type = context.getArgument("type", FlwEngine.class);
 

src/main/java/com/jozufozu/flywheel/config/FlwCommands.java

@@ -15,9 +15,8 @@ public class FlwCommands {
 				.getDispatcher();
 
 		dispatcher.register(Commands.literal("flywheel")
-									.then(new BooleanConfigCommand("backend", BooleanConfig.ENGINE).register())
 									.then(new BooleanConfigCommand("debugNormals", BooleanConfig.NORMAL_OVERLAY).register())
-									.then(new EngineConfigCommand().register())
+									.then(EngineConfigCommand.register())
 		);
 	}
 }

src/main/java/com/jozufozu/flywheel/config/FlwConfig.java

@@ -26,8 +26,8 @@ public class FlwConfig {
 		return INSTANCE;
 	}
 
-	public boolean enabled() {
-		return client.enabled.get();
+	public FlwEngine getEngine() {
+		return client.engine.get();
 	}
 
 	public boolean debugNormals() {
@@ -38,17 +38,13 @@ public class FlwConfig {
 	}
 
 	public static class ClientConfig {
-		public final BooleanValue enabled;
 		public final ForgeConfigSpec.EnumValue<FlwEngine> engine;
 		public final BooleanValue debugNormals;
 
 		public ClientConfig(ForgeConfigSpec.Builder builder) {
 
-			enabled = builder.comment("Enable or disable the entire engine")
-					.define("enabled", true);
-
 			engine = builder.comment("Enable or disable the entire engine")
-					.defineEnum("backend", FlwEngine.GL33);
+					.defineEnum("backend", FlwEngine.INSTANCING);
 
 			debugNormals = builder.comment("Enable or disable a debug overlay that colors pixels by their normal")
 					.define("debugNormals", false);

src/main/java/com/jozufozu/flywheel/config/FlwEngine.java

@@ -1,9 +1,12 @@
 package com.jozufozu.flywheel.config;
 
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+
 import javax.annotation.Nullable;
 
 import com.jozufozu.flywheel.backend.Backend;
-import com.jozufozu.flywheel.backend.OptifineHandler;
 
 import net.minecraft.ChatFormatting;
 import net.minecraft.client.Minecraft;
@@ -13,15 +16,50 @@ import net.minecraft.network.chat.Component;
 import net.minecraft.network.chat.TextComponent;
 
 public enum FlwEngine {
-	BATCHING(new TextComponent("Batching").withStyle(ChatFormatting.BLUE)),
-	GL33(new TextComponent("GL 3.3 Instanced Arrays").withStyle(ChatFormatting.GREEN)),
-
+	OFF("off", "Off", new TextComponent("Disabled Flywheel").withStyle(ChatFormatting.RED)),
+	BATCHING("batching", "Parallel Batching", new TextComponent("Using Batching Engine").withStyle(ChatFormatting.GREEN)),
+	INSTANCING("instancing", "GL33 Instanced Arrays", new TextComponent("Using Instancing Engine").withStyle(ChatFormatting.GREEN)),
 	;
 
-	private final Component name;
+	private static final Map<String, FlwEngine> lookup;
 
-	FlwEngine(Component name) {
-		this.name = name;
+	static {
+		lookup = new HashMap<>();
+		for (FlwEngine value : values()) {
+			lookup.put(value.shortName, value);
+		}
+	}
+
+	private final Component message;
+	private final String shortName;
+	private final String properName;
+
+	FlwEngine(String shortName, String properName, Component message) {
+		this.shortName = shortName;
+		this.properName = properName;
+		this.message = message;
+	}
+
+	public String getProperName() {
+		return properName;
+	}
+
+	public void encode(FriendlyByteBuf buffer) {
+		buffer.writeByte(this.ordinal());
+	}
+
+	public static void handle(@Nullable FlwEngine type) {
+		LocalPlayer player = Minecraft.getInstance().player;
+		if (player == null) return;
+
+		if (type != null) {
+			FlwConfig.get().client.engine.set(type);
+
+			player.displayClientMessage(type.message, false);
+			Backend.reloadWorldRenderers();
+		} else {
+			player.displayClientMessage(FlwConfig.get().getEngine().message, false);
+		}
 	}
 
 	@Nullable
@@ -33,25 +71,12 @@ public enum FlwEngine {
 		return values()[b];
 	}
 
-	public void encode(FriendlyByteBuf buffer) {
-		buffer.writeByte(this.ordinal());
+	@Nullable
+	public static FlwEngine byName(String name) {
+		return lookup.get(name);
 	}
 
-	public void switchTo() {
-		LocalPlayer player = Minecraft.getInstance().player;
-		if (player == null) return;
-
-//		if (state == BooleanDirective.DISPLAY) {
-//			Component text = new TextComponent("Flywheel renderer is currently: ").append(boolToText(FlwConfig.get().enabled()));
-//			player.displayClientMessage(text, false);
-//			return;
-//		}
-
-		FlwConfig.get().client.engine.set(this);
-
-		Component text = new TextComponent("Using ").withStyle(ChatFormatting.WHITE).append(name);
-
-		player.displayClientMessage(text, false);
-		Backend.reloadWorldRenderers();
+	public static Collection<String> validNames() {
+		return lookup.keySet();
 	}
 }

src/main/java/com/jozufozu/flywheel/config/SConfigureEnginePacket.java

@@ -29,9 +29,7 @@ public class SConfigureEnginePacket {
 	}
 
 	public void execute(Supplier<NetworkEvent.Context> ctx) {
-		if (type != null) {
-			type.switchTo();
-		}
+		FlwEngine.handle(type);
 		ctx.get()
 				.setPacketHandled(true);
 	}

src/main/java/com/jozufozu/flywheel/config/package-info.java

@@ -0,0 +1,6 @@
+@ParametersAreNonnullByDefault @MethodsReturnNonnullByDefault
+package com.jozufozu.flywheel.config;
+
+import javax.annotation.ParametersAreNonnullByDefault;
+
+import net.minecraft.MethodsReturnNonnullByDefault;

src/main/java/com/jozufozu/flywheel/core/crumbling/CrumblingRenderer.java

@@ -54,8 +54,7 @@ public class CrumblingRenderer {
 	}
 
 	public static void renderBreaking(RenderLayerEvent event) {
-		if (!Backend.getInstance()
-				.canUseInstancing(event.getWorld())) return;
+		if (!Backend.canUseInstancing(event.getWorld())) return;
 
 		Int2ObjectMap<List<BlockEntity>> activeStages = getActiveStageTiles(event.getWorld());
 
@@ -120,8 +119,7 @@ public class CrumblingRenderer {
 	@SubscribeEvent
 	public static void onReloadRenderers(ReloadRenderersEvent event) {
 		ClientLevel world = event.getWorld();
-		if (Backend.getInstance()
-				.canUseInstancing() && world != null) {
+        if (Backend.isOn() && world != null) {
 			reset();
 		}
 	}

src/main/java/com/jozufozu/flywheel/mixin/CancelEntityRenderMixin.java

@@ -23,8 +23,7 @@ public class CancelEntityRenderMixin {
 	@Redirect(method = "renderLevel", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/multiplayer/ClientLevel;entitiesForRendering()Ljava/lang/Iterable;"))
 	private Iterable<Entity> filterEntities(ClientLevel world) {
 		Iterable<Entity> entities = world.entitiesForRendering();
-		if (Backend.getInstance()
-				.canUseInstancing()) {
+		if (Backend.isOn()) {
 
 			ArrayList<Entity> filtered = Lists.newArrayList(entities);
 

src/main/java/com/jozufozu/flywheel/mixin/ChunkRebuildHooksMixin.java

@@ -23,7 +23,7 @@ public class ChunkRebuildHooksMixin {
 	@Inject(method = "handleBlockEntity", at = @At("HEAD"), cancellable = true)
 	private <E extends BlockEntity> void addAndFilterBEs(ChunkRenderDispatcher.CompiledChunk compiledChunk, Set<BlockEntity> set, E be, CallbackInfo ci) {
 
-		if (Backend.getInstance().canUseInstancing() && Backend.isFlywheelWorld(be.getLevel())) {
+		if (Backend.isOn() && Backend.isFlywheelWorld(be.getLevel())) {
 
 			InstancedRenderRegistry registry = InstancedRenderRegistry.getInstance();
 			if (registry.canInstance(be.getType()))

src/main/java/com/jozufozu/flywheel/mixin/RenderHooksMixin.java

@@ -1,6 +1,5 @@
 package com.jozufozu.flywheel.mixin;
 
-import org.lwjgl.opengl.GL20;
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
@@ -9,7 +8,6 @@ import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 import com.jozufozu.flywheel.backend.Backend;
-import com.jozufozu.flywheel.backend.OptifineHandler;
 import com.jozufozu.flywheel.backend.instancing.InstancedRenderDispatcher;
 import com.jozufozu.flywheel.core.crumbling.CrumblingRenderer;
 import com.jozufozu.flywheel.event.BeginFrameEvent;
@@ -74,8 +72,7 @@ public class RenderHooksMixin {
 	@Inject(at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/LevelRenderer;checkPoseStack(Lcom/mojang/blaze3d/vertex/PoseStack;)V", ordinal = 2 // after the game renders the breaking overlay normally
 	), method = "renderLevel")
 	private void renderBlockBreaking(PoseStack stack, float p_228426_2_, long p_228426_3_, boolean p_228426_5_, Camera info, GameRenderer gameRenderer, LightTexture lightTexture, Matrix4f p_228426_9_, CallbackInfo ci) {
-		if (!Backend.getInstance()
-				.available()) return;
+		if (!Backend.isOn()) return;
 
 		Vec3 cameraPos = info.getPosition();