Debug text

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

@@ -74,7 +74,7 @@ public class Backend {
 	});
 
 	private static Matrix4f projectionMatrix = new Matrix4f();
-	private static boolean instancingAvailable;
+	private static boolean instancedArrays;
 	private static boolean enabled;
 
 	static final Map<ResourceLocation, MaterialSpec<?>> materialRegistry = new HashMap<>();
@@ -108,6 +108,18 @@ public class Backend {
 		throw new IllegalStateException();
 	}
 
+	public static String getBackendDescriptor() {
+		if (canUseInstancing()) {
+			return "GL33 Instanced Arrays";
+		}
+
+		if (canUseVBOs()) {
+			return "VBOs";
+		}
+
+		return "Disabled";
+	}
+
 	/**
 	 * Register a shader program.
 	 */
@@ -156,7 +168,7 @@ public class Backend {
 	}
 
 	public static boolean canUseInstancing() {
-		return enabled && instancingAvailable;
+		return enabled && instancedArrays;
 	}
 
 	public static boolean canUseVBOs() {
@@ -189,7 +201,7 @@ public class Backend {
 
 		compat = new GlCompat(capabilities);
 
-		instancingAvailable = compat.vertexArrayObjectsSupported() &&
+		instancedArrays = compat.vertexArrayObjectsSupported() &&
 				compat.drawInstancedSupported() &&
 				compat.instancedArraysSupported();
 

src/main/java/com/jozufozu/flywheel/backend/model/BufferedModel.java

@@ -47,14 +47,6 @@ public class BufferedModel {
 		return vertexCount;
 	}
 
-	public void bindBuffer() {
-		vbo.bind();
-	}
-
-	public void unbindBuffer() {
-		vbo.unbind();
-	}
-
 	public boolean valid() {
 		return vertexCount > 0 && !deleted;
 	}

src/main/java/com/jozufozu/flywheel/event/ForgeEvents.java

@@ -0,0 +1,32 @@
+package com.jozufozu.flywheel.event;
+
+import java.util.ArrayList;
+
+import com.jozufozu.flywheel.backend.Backend;
+
+import net.minecraft.client.Minecraft;
+import net.minecraftforge.client.event.RenderGameOverlayEvent;
+import net.minecraftforge.eventbus.api.SubscribeEvent;
+import net.minecraftforge.fml.common.Mod;
+
+@Mod.EventBusSubscriber
+public class ForgeEvents {
+
+	@SubscribeEvent
+	public static void addToDebugScreen(RenderGameOverlayEvent.Text event) {
+
+		if (Minecraft.getInstance().gameSettings.showDebugInfo) {
+
+			ArrayList<String> right = event.getRight();
+
+			String text = "Flywheel: " + Backend.getBackendDescriptor();
+			if (right.size() < 10) {
+				right.add("");
+				right.add(text);
+			} else {
+				right.add(9, "");
+				right.add(10, text);
+			}
+		}
+	}
+}