Get started on a batching engine

- An Engine is a MaterialManager and a RenderDispatcher
 - Refactor InstanceManager's ctor to use the MaterialManager interface instead of the concrete type
 - MaterialManagerImpl -> InstancingEngine
 - Add skeleton for BatchingEngine
 - Hack in InstanceWorld to switch between the 2
 - Rename/move existing MaterialManager impl to new package

src/main/java/com/simibubi/create/content/contraptions/base/flwdata/BeltType.java

@@ -2,11 +2,14 @@ package com.simibubi.create.content.contraptions.base.flwdata;
 
 import com.jozufozu.flywheel.backend.gl.attrib.VertexFormat;
 import com.jozufozu.flywheel.backend.gl.buffer.VecBuffer;
+import com.jozufozu.flywheel.backend.struct.Batched;
+import com.jozufozu.flywheel.backend.struct.BatchingTransformer;
 import com.jozufozu.flywheel.backend.struct.StructWriter;
 import com.jozufozu.flywheel.backend.struct.Writeable;
+import com.jozufozu.flywheel.core.model.IModel;
 import com.simibubi.create.foundation.render.AllInstanceFormats;
 
-public class BeltType implements Writeable<BeltData> {
+public class BeltType implements Writeable<BeltData>, Batched<BeltData> {
 	@Override
 	public BeltData create() {
 		return new BeltData();
@@ -21,4 +24,9 @@ public class BeltType implements Writeable<BeltData> {
 	public StructWriter<BeltData> getWriter(VecBuffer backing) {
 		return new UnsafeBeltWriter(backing, this);
 	}
+
+	@Override
+	public BatchingTransformer<BeltData> getTransformer(IModel model) {
+		return null;
+	}
 }

src/main/java/com/simibubi/create/content/contraptions/base/flwdata/RotatingType.java

@@ -2,11 +2,14 @@ package com.simibubi.create.content.contraptions.base.flwdata;
 
 import com.jozufozu.flywheel.backend.gl.attrib.VertexFormat;
 import com.jozufozu.flywheel.backend.gl.buffer.VecBuffer;
+import com.jozufozu.flywheel.backend.struct.Batched;
+import com.jozufozu.flywheel.backend.struct.BatchingTransformer;
 import com.jozufozu.flywheel.backend.struct.StructWriter;
 import com.jozufozu.flywheel.backend.struct.Writeable;
+import com.jozufozu.flywheel.core.model.IModel;
 import com.simibubi.create.foundation.render.AllInstanceFormats;
 
-public class RotatingType implements Writeable<RotatingData> {
+public class RotatingType implements Writeable<RotatingData>, Batched<RotatingData> {
 	@Override
 	public RotatingData create() {
 		return new RotatingData();
@@ -21,4 +24,9 @@ public class RotatingType implements Writeable<RotatingData> {
 	public StructWriter<RotatingData> getWriter(VecBuffer backing) {
 		return new UnsafeRotatingWriter(backing, this);
 	}
+
+	@Override
+	public BatchingTransformer<RotatingData> getTransformer(IModel model) {
+		return null;
+	}
 }

src/main/java/com/simibubi/create/content/contraptions/components/actors/flwdata/ActorType.java

@@ -2,11 +2,14 @@ package com.simibubi.create.content.contraptions.components.actors.flwdata;
 
 import com.jozufozu.flywheel.backend.gl.attrib.VertexFormat;
 import com.jozufozu.flywheel.backend.gl.buffer.VecBuffer;
+import com.jozufozu.flywheel.backend.struct.Batched;
+import com.jozufozu.flywheel.backend.struct.BatchingTransformer;
 import com.jozufozu.flywheel.backend.struct.StructWriter;
 import com.jozufozu.flywheel.backend.struct.Writeable;
+import com.jozufozu.flywheel.core.model.IModel;
 import com.simibubi.create.foundation.render.AllInstanceFormats;
 
-public class ActorType implements Writeable<ActorData> {
+public class ActorType implements Writeable<ActorData>, Batched<ActorData> {
 	@Override
 	public ActorData create() {
 		return new ActorData();
@@ -21,4 +24,9 @@ public class ActorType implements Writeable<ActorData> {
 	public StructWriter<ActorData> getWriter(VecBuffer backing) {
 		return new UnsafeActorWriter(backing, this);
 	}
+
+	@Override
+	public BatchingTransformer<ActorData> getTransformer(IModel model) {
+		return null;
+	}
 }

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/ContraptionGroup.java

@@ -1,13 +1,13 @@
 package com.simibubi.create.content.contraptions.components.structureMovement.render;
 
-import com.jozufozu.flywheel.backend.material.MaterialGroupImpl;
+import com.jozufozu.flywheel.backend.material.instancing.InstancedMaterialGroup;
-import com.jozufozu.flywheel.backend.material.MaterialManagerImpl;
+import com.jozufozu.flywheel.backend.material.instancing.InstancingEngine;
 
-public class ContraptionGroup<P extends ContraptionProgram> extends MaterialGroupImpl<P> {
+public class ContraptionGroup<P extends ContraptionProgram> extends InstancedMaterialGroup<P> {
 
 	private final RenderedContraption contraption;
 
-	public ContraptionGroup(RenderedContraption contraption, MaterialManagerImpl<P> owner) {
+	public ContraptionGroup(RenderedContraption contraption, InstancingEngine<P> owner) {
 		super(owner);
 
 		this.contraption = contraption;
@@ -18,7 +18,7 @@ public class ContraptionGroup<P extends ContraptionProgram> extends MaterialGrou
 		contraption.setup(program);
 	}
 
-	public static <P extends ContraptionProgram> MaterialManagerImpl.GroupFactory<P> forContraption(RenderedContraption c) {
+	public static <P extends ContraptionProgram> InstancingEngine.GroupFactory<P> forContraption(RenderedContraption c) {
 		return (materialManager) -> new ContraptionGroup<>(c, materialManager);
 	}
 }

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/ContraptionInstanceManager.java

@@ -8,7 +8,7 @@ import javax.annotation.Nullable;
 import org.apache.commons.lang3.tuple.Pair;
 
 import com.jozufozu.flywheel.backend.instancing.tile.TileInstanceManager;
-import com.jozufozu.flywheel.backend.material.MaterialManagerImpl;
+import com.jozufozu.flywheel.backend.material.MaterialManager;
 import com.simibubi.create.AllMovementBehaviours;
 import com.simibubi.create.content.contraptions.components.structureMovement.MovementBehaviour;
 import com.simibubi.create.content.contraptions.components.structureMovement.MovementContext;
@@ -23,7 +23,7 @@ public class ContraptionInstanceManager extends TileInstanceManager {
 
     private final WeakReference<RenderedContraption> contraption;
 
-    ContraptionInstanceManager(RenderedContraption contraption, MaterialManagerImpl<?> materialManager) {
+    ContraptionInstanceManager(RenderedContraption contraption, MaterialManager materialManager) {
 		super(materialManager);
 		this.contraption = new WeakReference<>(contraption);
 	}

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/FlwContraptionManager.java

@@ -59,7 +59,7 @@ public class FlwContraptionManager extends ContraptionRenderManager<RenderedCont
 			RenderLayer renderLayer = event.getLayer();
 			if (renderLayer != null) {
 				for (RenderedContraption renderer : visible) {
-					renderer.materialManager.render(renderLayer, event.viewProjection, event.camX, event.camY, event.camZ);
+					renderer.materialManager.render(event, event.buffers.bufferSource());
 				}
 			}
 		}

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/RenderedContraption.java

@@ -8,7 +8,7 @@ import java.util.function.Supplier;
 
 import com.jozufozu.flywheel.backend.Backend;
 import com.jozufozu.flywheel.backend.instancing.InstancedRenderRegistry;
-import com.jozufozu.flywheel.backend.material.MaterialManagerImpl;
+import com.jozufozu.flywheel.backend.material.instancing.InstancingEngine;
 import com.jozufozu.flywheel.backend.model.ArrayModelRenderer;
 import com.jozufozu.flywheel.backend.model.ModelRenderer;
 import com.jozufozu.flywheel.core.model.IModel;
@@ -34,7 +34,7 @@ public class RenderedContraption extends ContraptionRenderInfo {
 
 	private final ContraptionLighter<?> lighter;
 
-	public final MaterialManagerImpl<ContraptionProgram> materialManager;
+	public final InstancingEngine<ContraptionProgram> materialManager;
 	public final ContraptionInstanceManager kinetics;
 
 	private final Map<RenderType, ModelRenderer> renderLayers = new HashMap<>();
@@ -47,11 +47,12 @@ public class RenderedContraption extends ContraptionRenderInfo {
 	public RenderedContraption(Contraption contraption, PlacementSimulationWorld renderWorld) {
 		super(contraption, renderWorld);
 		this.lighter = contraption.makeLighter();
-		this.materialManager = MaterialManagerImpl.builder(CreateContexts.CWORLD)
+		this.materialManager = InstancingEngine.builder(CreateContexts.CWORLD)
 				.setGroupFactory(ContraptionGroup.forContraption(this))
 				.setIgnoreOriginCoordinate(true)
 				.build();
 		this.kinetics = new ContraptionInstanceManager(this, materialManager);
+		this.materialManager.addListener(this.kinetics);
 
 		buildLayers();
 		if (Backend.getInstance().canUseInstancing()) {

src/main/java/com/simibubi/create/content/logistics/block/flap/FlapType.java

@@ -2,11 +2,14 @@ package com.simibubi.create.content.logistics.block.flap;
 
 import com.jozufozu.flywheel.backend.gl.attrib.VertexFormat;
 import com.jozufozu.flywheel.backend.gl.buffer.VecBuffer;
+import com.jozufozu.flywheel.backend.struct.Batched;
+import com.jozufozu.flywheel.backend.struct.BatchingTransformer;
 import com.jozufozu.flywheel.backend.struct.StructWriter;
 import com.jozufozu.flywheel.backend.struct.Writeable;
+import com.jozufozu.flywheel.core.model.IModel;
 import com.simibubi.create.foundation.render.AllInstanceFormats;
 
-public class FlapType implements Writeable<FlapData> {
+public class FlapType implements Writeable<FlapData>, Batched<FlapData> {
 	@Override
 	public FlapData create() {
 		return new FlapData();
@@ -21,4 +24,9 @@ public class FlapType implements Writeable<FlapData> {
 	public StructWriter<FlapData> getWriter(VecBuffer backing) {
 		return new UnsafeFlapWriter(backing, this);
 	}
+
+	@Override
+	public BatchingTransformer<FlapData> getTransformer(IModel model) {
+		return null;
+	}
 }