Merge remote-tracking branch 'origin/mc1.15/dev' into mc1.16/dev

# Conflicts:
#	src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/ContraptionCollider.java
#	src/main/java/com/simibubi/create/content/curiosities/TreeFertilizerItem.java

src/main/java/com/simibubi/create/AllTileEntities.java

@@ -50,10 +50,7 @@ import com.simibubi.create.content.contraptions.components.press.PressInstance;
 import com.simibubi.create.content.contraptions.components.saw.SawInstance;
 import com.simibubi.create.content.contraptions.components.saw.SawRenderer;
 import com.simibubi.create.content.contraptions.components.saw.SawTileEntity;
-import com.simibubi.create.content.contraptions.components.structureMovement.bearing.BearingRenderer;
+import com.simibubi.create.content.contraptions.components.structureMovement.bearing.*;
-import com.simibubi.create.content.contraptions.components.structureMovement.bearing.ClockworkBearingTileEntity;
-import com.simibubi.create.content.contraptions.components.structureMovement.bearing.MechanicalBearingTileEntity;
-import com.simibubi.create.content.contraptions.components.structureMovement.bearing.WindmillBearingTileEntity;
 import com.simibubi.create.content.contraptions.components.structureMovement.chassis.ChassisTileEntity;
 import com.simibubi.create.content.contraptions.components.structureMovement.chassis.StickerInstance;
 import com.simibubi.create.content.contraptions.components.structureMovement.chassis.StickerRenderer;
@@ -380,21 +377,21 @@ public class AllTileEntities {
 
 	public static final TileEntityEntry<WindmillBearingTileEntity> WINDMILL_BEARING = Create.registrate()
 		.tileEntity("windmill_bearing", WindmillBearingTileEntity::new)
-		.instance(() -> BackHalfShaftInstance::new)
+		.instance(() -> BearingInstance::new)
 		.validBlocks(AllBlocks.WINDMILL_BEARING)
 		.renderer(() -> BearingRenderer::new)
 		.register();
 
 	public static final TileEntityEntry<MechanicalBearingTileEntity> MECHANICAL_BEARING = Create.registrate()
 		.tileEntity("mechanical_bearing", MechanicalBearingTileEntity::new)
-		.instance(() -> BackHalfShaftInstance::new)
+		.instance(() -> BearingInstance::new)
 		.validBlocks(AllBlocks.MECHANICAL_BEARING)
 		.renderer(() -> BearingRenderer::new)
 		.register();
 
 	public static final TileEntityEntry<ClockworkBearingTileEntity> CLOCKWORK_BEARING = Create.registrate()
 		.tileEntity("clockwork_bearing", ClockworkBearingTileEntity::new)
-		.instance(() -> BackHalfShaftInstance::new)
+		.instance(() -> BearingInstance::new)
 		.validBlocks(AllBlocks.CLOCKWORK_BEARING)
 		.renderer(() -> BearingRenderer::new)
 		.register();

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

@@ -13,6 +13,7 @@ import org.apache.commons.lang3.mutable.MutableInt;
 import org.apache.commons.lang3.mutable.MutableObject;
 
 import com.google.common.base.Predicates;
+import com.google.common.collect.ImmutableSet;
 import com.simibubi.create.AllBlocks;
 import com.simibubi.create.AllMovementBehaviours;
 import com.simibubi.create.content.contraptions.components.actors.BlockBreakingMovementBehaviour;
@@ -221,6 +222,7 @@ public class ContraptionCollider {
 			totalResponse = VecHelper.rotate(totalResponse, yawOffset, Axis.Y);
 			collisionNormal = rotationMatrix.transform(collisionNormal);
 			collisionNormal = VecHelper.rotate(collisionNormal, yawOffset, Axis.Y);
+			collisionNormal = collisionNormal.normalize();
 			collisionLocation = rotationMatrix.transform(collisionLocation);
 			collisionLocation = VecHelper.rotate(collisionLocation, yawOffset, Axis.Y);
 			rotationMatrix.transpose();
@@ -248,16 +250,11 @@ public class ContraptionCollider {
 			boolean hasNormal = !collisionNormal.equals(Vector3d.ZERO);
 			boolean anyCollision = hardCollision || temporalCollision;
 
-			if (bounce > 0 && hasNormal && anyCollision) {
+			if (bounce > 0 && hasNormal && anyCollision && bounceEntity(entity, collisionNormal, contraptionEntity, bounce)) {
-				collisionNormal = collisionNormal.normalize();
+				entity.world.playSound(playerType == PlayerType.CLIENT ? (PlayerEntity) entity : null,
-				Vector3d newNormal = collisionNormal.crossProduct(collisionNormal.crossProduct(entityMotionNoTemporal))
+					entity.getX(), entity.getY(), entity.getZ(), SoundEvents.BLOCK_SLIME_BLOCK_FALL,
-					.normalize();
+					SoundCategory.BLOCKS, .5f, 1);
-				if (bounceEntity(entity, newNormal, contraptionEntity, bounce)) {
+				continue;
-					entity.world.playSound(playerType == PlayerType.CLIENT ? (PlayerEntity) entity : null,
-						entity.getX(), entity.getY(), entity.getZ(), SoundEvents.BLOCK_SLIME_BLOCK_FALL,
-						SoundCategory.BLOCKS, .5f, 1);
-					continue;
-				}
 			}
 
 			if (temporalCollision) {
@@ -288,7 +285,6 @@ public class ContraptionCollider {
 			}
 
 			if (bounce == 0 && slide > 0 && hasNormal && anyCollision && rotation.hasVerticalRotation()) {
-				collisionNormal = collisionNormal.normalize();
 				Vector3d motionIn = entityMotionNoTemporal.mul(0, 1, 0)
 					.add(0, -.01f, 0);
 				Vector3d slideNormal = collisionNormal.crossProduct(motionIn.crossProduct(collisionNormal))
@@ -346,35 +342,14 @@ public class ContraptionCollider {
 			return false;
 		if (entity.bypassesLandingEffects())
 			return false;
-		if (normal.equals(Vector3d.ZERO))
-			return false;
 
-		Vector3d contraptionVec = Vector3d.ZERO;
 		Vector3d contactPointMotion = contraption.getContactPointMotion(entity.getPositionVec());
-		Vector3d motion = entity.getMotion()
+		Vector3d motion = entity.getMotion().subtract(contactPointMotion);
-			.subtract(contactPointMotion);
+		Vector3d deltav = normal.scale(factor*2*motion.dotProduct(normal));
-
+		if (deltav.dotProduct(deltav) < 0.1f)
-		Vector3d v2 = motion.crossProduct(normal)
+		 	return false;
-			.normalize();
+		entity.setMotion(entity.getMotion().subtract(deltav));
-		if (v2 != Vector3d.ZERO)
+		return true;
-			contraptionVec = normal.scale(contraptionVec.dotProduct(normal))
-				.add(v2.scale(contraptionVec.dotProduct(v2)));
-		else
-			v2 = normal.crossProduct(normal.add(Math.random(), Math.random(), Math.random()))
-				.normalize();
-
-		Vector3d v3 = normal.crossProduct(v2);
-		motion = motion.subtract(contraptionVec);
-		Vector3d lr = new Vector3d(factor * motion.dotProduct(normal), -motion.dotProduct(v2), -motion.dotProduct(v3));
-
-		if (lr.dotProduct(lr) > 1 / 16f) {
-			Vector3d newMot = contactPointMotion.add(normal.x * lr.x + v2.x * lr.y + v3.x * lr.z,
-				normal.y * lr.x + v2.y * lr.y + v3.y * lr.z, normal.z * lr.x + v2.z * lr.y + v3.z * lr.z);
-			entity.setMotion(newMot);
-			return true;
-		}
-
-		return false;
 	}
 
 	public static Vector3d getWorldToLocalTranslation(Entity entity, AbstractContraptionEntity contraptionEntity) {

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

@@ -8,15 +8,6 @@ public class NonStationaryLighter<C extends Contraption> extends ContraptionLigh
         super(contraption);
     }
 
-    @Override
-    protected GridAlignedBB contraptionBoundsToVolume(GridAlignedBB bounds) {
-        bounds.grow(2); // so we have at least enough data on the edges to avoid artifacts and have smooth lighting
-        bounds.minY = Math.max(bounds.minY, 0);
-        bounds.maxY = Math.min(bounds.maxY, 255);
-
-        return bounds;
-    }
-
     @Override
     public void tick(RenderedContraption owner) {
         super.tick(owner);

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/bearing/BearingInstance.java

@@ -0,0 +1,77 @@
+package com.simibubi.create.content.contraptions.components.structureMovement.bearing;
+
+import net.minecraft.client.renderer.Quaternion;
+import net.minecraft.client.renderer.Vector3f;
+import net.minecraft.state.properties.BlockStateProperties;
+import net.minecraft.util.Direction;
+
+import com.simibubi.create.AllBlockPartials;
+import com.simibubi.create.content.contraptions.base.BackHalfShaftInstance;
+import com.simibubi.create.content.contraptions.base.KineticTileEntity;
+import com.simibubi.create.foundation.render.backend.core.OrientedData;
+import com.simibubi.create.foundation.render.backend.instancing.IDynamicInstance;
+import com.simibubi.create.foundation.render.backend.instancing.InstancedTileRenderer;
+import com.simibubi.create.foundation.utility.AngleHelper;
+import com.simibubi.create.foundation.utility.AnimationTickHolder;
+
+public class BearingInstance<B extends KineticTileEntity & IBearingTileEntity> extends BackHalfShaftInstance implements IDynamicInstance {
+	final B bearing;
+
+	final OrientedData topInstance;
+
+	final Vector3f rotationAxis;
+	final Quaternion blockOrientation;
+
+	public BearingInstance(InstancedTileRenderer<?> modelManager, B tile) {
+		super(modelManager, tile);
+		this.bearing = tile;
+
+		Direction facing = blockState.get(BlockStateProperties.FACING);
+		rotationAxis = Direction.getFacingFromAxis(Direction.AxisDirection.POSITIVE, axis).getUnitVector();
+
+		blockOrientation = getBlockStateOrientation(facing);
+
+		AllBlockPartials top =
+				bearing.isWoodenTop() ? AllBlockPartials.BEARING_TOP_WOODEN : AllBlockPartials.BEARING_TOP;
+
+		topInstance = getOrientedMaterial().getModel(top, blockState).createInstance();
+
+		topInstance.setPosition(getInstancePosition()).setRotation(blockOrientation);
+	}
+
+	@Override
+	public void beginFrame() {
+
+		float interpolatedAngle = bearing.getInterpolatedAngle(AnimationTickHolder.getPartialTicks() - 1);
+		Quaternion rot = rotationAxis.getDegreesQuaternion(interpolatedAngle);
+
+		rot.multiply(blockOrientation);
+
+		topInstance.setRotation(rot);
+	}
+
+	@Override
+	public void updateLight() {
+		super.updateLight();
+		relight(pos, topInstance);
+	}
+
+	@Override
+	public void remove() {
+		super.remove();
+		topInstance.delete();
+	}
+
+	static Quaternion getBlockStateOrientation(Direction facing) {
+		Quaternion orientation;
+
+		if (facing.getAxis().isHorizontal()) {
+			orientation = Vector3f.POSITIVE_Y.getDegreesQuaternion(AngleHelper.horizontalAngle(facing.getOpposite()));
+		} else {
+			orientation = Quaternion.IDENTITY.copy();
+		}
+
+		orientation.multiply(Vector3f.POSITIVE_X.getDegreesQuaternion(-90 - AngleHelper.verticalAngle(facing)));
+		return orientation;
+	}
+}

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/bearing/BearingRenderer.java

@@ -5,6 +5,7 @@ import com.simibubi.create.AllBlockPartials;
 import com.simibubi.create.content.contraptions.base.KineticTileEntity;
 import com.simibubi.create.content.contraptions.base.KineticTileEntityRenderer;
 import com.simibubi.create.foundation.render.SuperByteBuffer;
+import com.simibubi.create.foundation.render.backend.FastRenderDispatcher;
 import com.simibubi.create.foundation.utility.AngleHelper;
 
 import net.minecraft.client.renderer.IRenderTypeBuffer;
@@ -22,6 +23,9 @@ public class BearingRenderer extends KineticTileEntityRenderer {
 	@Override
 	protected void renderSafe(KineticTileEntity te, float partialTicks, MatrixStack ms, IRenderTypeBuffer buffer,
 		int light, int overlay) {
+
+		if (FastRenderDispatcher.available(te.getWorld())) return;
+
 		super.renderSafe(te, partialTicks, ms, buffer, light, overlay);
 
 		IBearingTileEntity bearingTe = (IBearingTileEntity) te;

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/bearing/StabilizedBearingInstance.java

@@ -0,0 +1,51 @@
+package com.simibubi.create.content.contraptions.components.structureMovement.bearing;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.client.renderer.Quaternion;
+import net.minecraft.client.renderer.Vector3f;
+import net.minecraft.state.properties.BlockStateProperties;
+import net.minecraft.util.Direction;
+
+import com.simibubi.create.AllBlockPartials;
+import com.simibubi.create.content.contraptions.components.structureMovement.MovementContext;
+import com.simibubi.create.content.contraptions.components.structureMovement.render.ActorInstance;
+import com.simibubi.create.content.contraptions.components.structureMovement.render.ContraptionKineticRenderer;
+import com.simibubi.create.foundation.render.backend.core.OrientedData;
+import com.simibubi.create.foundation.utility.AnimationTickHolder;
+
+public class StabilizedBearingInstance extends ActorInstance {
+
+	final OrientedData topInstance;
+
+	final Direction facing;
+	final Vector3f rotationAxis;
+	final Quaternion blockOrientation;
+
+	public StabilizedBearingInstance(ContraptionKineticRenderer modelManager, MovementContext context) {
+		super(modelManager, context);
+
+		BlockState blockState = context.state;
+
+		facing = blockState.get(BlockStateProperties.FACING);
+		rotationAxis = Direction.getFacingFromAxis(Direction.AxisDirection.POSITIVE, facing.getAxis()).getUnitVector();
+
+		blockOrientation = BearingInstance.getBlockStateOrientation(facing);
+
+		topInstance = modelManager.getOrientedMaterial().getModel(AllBlockPartials.BEARING_TOP, blockState).createInstance();
+
+		topInstance.setPosition(context.localPos)
+				.setRotation(blockOrientation)
+				.setBlockLight(localBlockLight());
+	}
+
+	@Override
+	public void beginFrame() {
+		float counterRotationAngle = StabilizedBearingMovementBehaviour.getCounterRotationAngle(context, facing, AnimationTickHolder.getPartialTicks());
+
+		Quaternion rotation = rotationAxis.getDegreesQuaternion(counterRotationAngle);
+
+		rotation.multiply(blockOrientation);
+
+		topInstance.setRotation(rotation);
+	}
+}

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/bearing/StabilizedBearingMovementBehaviour.java

@@ -7,12 +7,16 @@ import com.simibubi.create.content.contraptions.components.structureMovement.Con
 import com.simibubi.create.content.contraptions.components.structureMovement.MovementBehaviour;
 import com.simibubi.create.content.contraptions.components.structureMovement.MovementContext;
 import com.simibubi.create.content.contraptions.components.structureMovement.OrientedContraptionEntity;
+import com.simibubi.create.content.contraptions.components.structureMovement.render.ActorInstance;
+import com.simibubi.create.content.contraptions.components.structureMovement.render.ContraptionKineticRenderer;
 import com.simibubi.create.content.contraptions.components.structureMovement.render.ContraptionRenderDispatcher;
 import com.simibubi.create.foundation.render.SuperByteBuffer;
+import com.simibubi.create.foundation.render.backend.FastRenderDispatcher;
 import com.simibubi.create.foundation.utility.AngleHelper;
 import com.simibubi.create.foundation.utility.AnimationTickHolder;
 
 import net.minecraft.client.renderer.IRenderTypeBuffer;
+import net.minecraft.client.renderer.Quaternion;
 import net.minecraft.client.renderer.RenderType;
 import net.minecraft.state.properties.BlockStateProperties;
 import net.minecraft.util.Direction;
@@ -20,27 +24,56 @@ import net.minecraft.util.Direction.Axis;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 
+import javax.annotation.Nullable;
+
 public class StabilizedBearingMovementBehaviour extends MovementBehaviour {
 
 	@Override
 	@OnlyIn(Dist.CLIENT)
 	public void renderInContraption(MovementContext context, MatrixStack ms, MatrixStack msLocal,
 		IRenderTypeBuffer buffer) {
+		if (FastRenderDispatcher.available()) return;
+
 		Direction facing = context.state.get(BlockStateProperties.FACING);
 		AllBlockPartials top = AllBlockPartials.BEARING_TOP;
 		SuperByteBuffer superBuffer = top.renderOn(context.state);
 		float renderPartialTicks = AnimationTickHolder.getPartialTicks();
 
 		// rotate to match blockstate
-		Axis axis = facing.getAxis();
+		Quaternion orientation = BearingInstance.getBlockStateOrientation(facing);
-		if (axis.isHorizontal())
-			superBuffer.rotateCentered(Direction.UP,
-				AngleHelper.rad(AngleHelper.horizontalAngle(facing.getOpposite())));
-		superBuffer.rotateCentered(Direction.EAST, AngleHelper.rad(-90 - AngleHelper.verticalAngle(facing)));
 
 		// rotate against parent
+		float angle = getCounterRotationAngle(context, facing, renderPartialTicks) * facing.getAxisDirection().getOffset();
+
+		Quaternion rotation = facing.getUnitVector().getDegreesQuaternion(angle);
+
+		rotation.multiply(orientation);
+
+		orientation = rotation;
+
+		superBuffer.rotateCentered(orientation);
+
+		// render
+		superBuffer.light(msLocal.peek()
+			.getModel(), ContraptionRenderDispatcher.getLightOnContraption(context));
+		superBuffer.renderInto(ms, buffer.getBuffer(RenderType.getSolid()));
+	}
+
+	@Override
+	public boolean hasSpecialInstancedRendering() {
+		return true;
+	}
+
+	@Nullable
+	@Override
+	public ActorInstance createInstance(ContraptionKineticRenderer kr, MovementContext context) {
+		return new StabilizedBearingInstance(kr, context);
+	}
+
+	static float getCounterRotationAngle(MovementContext context, Direction facing, float renderPartialTicks) {
 		float offset = 0;
-		int offsetMultiplier = facing.getAxisDirection().getOffset();
+
+		Axis axis = facing.getAxis();
 
 		AbstractContraptionEntity entity = context.contraption.entity;
 		if (entity instanceof ControlledContraptionEntity) {
@@ -54,17 +87,12 @@ public class StabilizedBearingMovementBehaviour extends MovementBehaviour {
 				offset = -orientedCE.getYaw(renderPartialTicks);
 			else {
 				if (orientedCE.isInitialOrientationPresent() && orientedCE.getInitialOrientation()
-					.getAxis() == axis)
+						.getAxis() == axis)
 					offset = -orientedCE.getPitch(renderPartialTicks);
 			}
 		}
-		if (offset != 0)
+		return offset;
-			superBuffer.rotateCentered(Direction.UP, AngleHelper.rad(offset * offsetMultiplier));
-
-		// render
-		superBuffer.light(msLocal.peek()
-			.getModel(), ContraptionRenderDispatcher.getLightOnContraption(context));
-		superBuffer.renderInto(ms, buffer.getBuffer(RenderType.getSolid()));
 	}
 
+
 }

src/main/java/com/simibubi/create/content/curiosities/TreeFertilizerItem.java

@@ -31,8 +31,8 @@ public class TreeFertilizerItem extends Item {
 				return ActionResultType.SUCCESS;
 			}
 
-			TreesDreamWorld world = new TreesDreamWorld((ServerWorld) context.getWorld(), context.getPos());
 			BlockPos saplingPos = context.getPos();
+			TreesDreamWorld world = new TreesDreamWorld((ServerWorld) context.getWorld(), saplingPos);
 
 			for (BlockPos pos : BlockPos.getAllInBoxMutable(-1, 0, -1, 1, 0, 1)) {
 				if (context.getWorld()
@@ -45,8 +45,8 @@ public class TreeFertilizerItem extends Item {
 				state.with(SaplingBlock.STAGE, 1));
 
 			for (BlockPos pos : world.blocksAdded.keySet()) {
-				BlockPos actualPos = pos.add(saplingPos)
+				BlockPos actualPos = pos.add(saplingPos).down(10);
-					.down(10);
+				BlockState newState = world.blocksAdded.get(pos);
 
 				// Don't replace Bedrock
 				if (context.getWorld()
@@ -54,21 +54,15 @@ public class TreeFertilizerItem extends Item {
 					.getBlockHardness(context.getWorld(), actualPos) == -1)
 					continue;
 				// Don't replace solid blocks with leaves
-				if (!world.getBlockState(pos)
+				if (!newState.isNormalCube(world, pos)
-					.isNormalCube(world, pos)
 					&& !context.getWorld()
 						.getBlockState(actualPos)
 						.getCollisionShape(context.getWorld(), actualPos)
 						.isEmpty())
 					continue;
-				if (world.getBlockState(pos)
-					.getBlock() == Blocks.GRASS_BLOCK
-					|| world.getBlockState(pos)
-						.getBlock() == Blocks.PODZOL)
-					continue;
 
 				context.getWorld()
-					.setBlockState(actualPos, world.getBlockState(pos));
+					.setBlockState(actualPos, newState);
 			}
 
 			if (context.getPlayer() != null && !context.getPlayer()
@@ -84,21 +78,27 @@ public class TreeFertilizerItem extends Item {
 
 	private class TreesDreamWorld extends PlacementSimulationServerWorld {
 		private final BlockPos saplingPos;
+		private final BlockState soil;
 
 		protected TreesDreamWorld(ServerWorld wrapped, BlockPos saplingPos) {
 			super(wrapped);
 			this.saplingPos = saplingPos;
+			soil = wrapped.getBlockState(saplingPos.down());
 		}
 
 		@Override
 		public BlockState getBlockState(BlockPos pos) {
 			if (pos.getY() <= 9)
-				return world.getBlockState(saplingPos.down());
+				return soil;
 			return super.getBlockState(pos);
 		}
 
+		@Override
+		public boolean setBlockState(BlockPos pos, BlockState newState, int flags) {
+			if (newState.getBlock() == Blocks.PODZOL)
+				return true;
+			return super.setBlockState(pos, newState, flags);
+		}
 	}
 
-
-
 }

src/main/java/com/simibubi/create/content/logistics/block/mechanicalArm/ArmInstance.java

@@ -30,9 +30,15 @@ public class ArmInstance extends SingleRotatingInstance implements IDynamicInsta
 
 	private final ArrayList<ModelData> models;
 	private final ArmTileEntity arm;
+	private final Boolean ceiling;
 
 	private boolean firstTick = true;
 
+	private float baseAngle = Float.NaN;
+	private float lowerArmAngle = Float.NaN;
+	private float upperArmAngle = Float.NaN;
+	private float headAngle = Float.NaN;
+
 	public ArmInstance(InstancedTileRenderer<?> modelManager, ArmTileEntity tile) {
 		super(modelManager, tile);
 
@@ -51,31 +57,49 @@ public class ArmInstance extends SingleRotatingInstance implements IDynamicInsta
 		clawGrips = Lists.newArrayList(clawGrip1, clawGrip2);
 		models = Lists.newArrayList(base, lowerBody, upperBody, head, claw, clawGrip1, clawGrip2);
 		arm = tile;
+		ceiling = blockState.get(ArmBlock.CEILING);
 
 		animateArm(false);
 	}
 
 	@Override
 	public void beginFrame() {
+		if (arm.phase == ArmTileEntity.Phase.DANCING) {
+			animateArm(true);
+			return;
+		}
 
-		boolean settled = arm.baseAngle.settled() && arm.lowerArmAngle.settled() && arm.upperArmAngle.settled() && arm.headAngle.settled();
+		float pt = AnimationTickHolder.getPartialTicks();
-		boolean rave = arm.phase == ArmTileEntity.Phase.DANCING;
 
-		if (!settled || rave || firstTick)
+		float baseAngleNow = this.arm.baseAngle.get(pt);
-			animateArm(rave);
+		float lowerArmAngleNow = this.arm.lowerArmAngle.get(pt);
+		float upperArmAngleNow = this.arm.upperArmAngle.get(pt);
+		float headAngleNow = this.arm.headAngle.get(pt);
+
+		boolean settled = MathHelper.epsilonEquals(baseAngle, baseAngleNow)
+				&& MathHelper.epsilonEquals(lowerArmAngle, lowerArmAngleNow)
+				&& MathHelper.epsilonEquals(upperArmAngle, upperArmAngleNow)
+				&& MathHelper.epsilonEquals(headAngle, headAngleNow);
+
+		this.baseAngle = baseAngleNow;
+		this.lowerArmAngle = lowerArmAngleNow;
+		this.upperArmAngle = upperArmAngleNow;
+		this.headAngle = headAngleNow;
+
+		if (!settled || firstTick)
+			animateArm(false);
 
 		if (settled)
 			firstTick = false;
 	}
 
 	private void animateArm(boolean rave) {
-		float pt = AnimationTickHolder.getPartialTicks();
-		int color = 0xFFFFFF;
 
-		float baseAngle = this.arm.baseAngle.get(pt);
+		int color;
-		float lowerArmAngle = this.arm.lowerArmAngle.get(pt) - 135;
+		float baseAngle;
-		float upperArmAngle = this.arm.upperArmAngle.get(pt) - 90;
+		float lowerArmAngle;
-		float headAngle = this.arm.headAngle.get(pt);
+		float upperArmAngle;
+		float headAngle;
 
 		if (rave) {
 			float renderTick = AnimationTickHolder.getRenderTime(this.arm.getWorld()) + (tile.hashCode() % 64);
@@ -83,7 +107,15 @@ public class ArmInstance extends SingleRotatingInstance implements IDynamicInsta
 			lowerArmAngle = MathHelper.lerp((MathHelper.sin(renderTick / 4) + 1) / 2, -45, 15);
 			upperArmAngle = MathHelper.lerp((MathHelper.sin(renderTick / 8) + 1) / 4, -45, 95);
 			headAngle = -lowerArmAngle;
+
 			color = ColorHelper.rainbowColor(AnimationTickHolder.getTicks() * 100);
+		} else {
+			baseAngle = this.baseAngle;
+			lowerArmAngle = this.lowerArmAngle - 135;
+			upperArmAngle = this.upperArmAngle - 90;
+			headAngle = this.headAngle;
+
+			color = 0xFFFFFF;
 		}
 
 		MatrixStack msLocal = new MatrixStack();
@@ -91,7 +123,7 @@ public class ArmInstance extends SingleRotatingInstance implements IDynamicInsta
 		msr.translate(getInstancePosition());
 		msr.centre();
 
-		if (blockState.get(ArmBlock.CEILING))
+		if (ceiling)
 			msr.rotateX(180);
 
 		ArmRenderer.transformBase(msr, baseAngle);

src/main/java/com/simibubi/create/foundation/render/SuperByteBuffer.java

@@ -196,11 +196,21 @@ public class SuperByteBuffer extends TemplateBuffer {
 		return this;
 	}
 
+	public SuperByteBuffer rotate(Quaternion q) {
+		transforms.multiply(q);
+		return this;
+	}
+
 	public SuperByteBuffer rotateCentered(Direction axis, float radians) {
 		return translate(.5f, .5f, .5f).rotate(axis, radians)
 			.translate(-.5f, -.5f, -.5f);
 	}
 
+	public SuperByteBuffer rotateCentered(Quaternion q) {
+		return translate(.5f, .5f, .5f).rotate(q)
+			.translate(-.5f, -.5f, -.5f);
+	}
+
 	public SuperByteBuffer shiftUV(SpriteShiftEntry entry) {
 		this.spriteShiftFunc = (builder, u, v) -> {
 			float targetU = entry.getTarget().getInterpolatedU((getUnInterpolatedU(entry.getOriginal(), u)));

src/main/java/com/simibubi/create/foundation/render/backend/Backend.java

@@ -1,19 +1,17 @@
 package com.simibubi.create.foundation.render.backend;
 
-import java.nio.FloatBuffer;
 import java.util.HashMap;
 import java.util.Map;
 
 import com.simibubi.create.foundation.render.backend.gl.GlFog;
 import com.simibubi.create.foundation.render.backend.gl.shader.*;
-import com.simibubi.create.foundation.render.backend.gl.versioned.GlFeatureCompat;
+import com.simibubi.create.foundation.render.backend.gl.versioned.GlCompat;
 import com.simibubi.create.foundation.render.backend.instancing.IFlywheelWorld;
 import net.minecraft.world.World;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.lwjgl.opengl.GL;
 import org.lwjgl.opengl.GLCapabilities;
-import org.lwjgl.system.MemoryUtil;
 
 import com.simibubi.create.foundation.config.AllConfigs;
 
@@ -28,7 +26,7 @@ public class Backend {
 
 	public static final Logger log = LogManager.getLogger(Backend.class);
 	public static GLCapabilities capabilities;
-	public static GlFeatureCompat compat;
+	public static GlCompat compat;
 
 	private static boolean instancingAvailable;
 	private static boolean enabled;
@@ -97,7 +95,7 @@ public class Backend {
 	public static void refresh() {
 		capabilities = GL.createCapabilities();
 
-		compat = new GlFeatureCompat(capabilities);
+		compat = new GlCompat(capabilities);
 
 		instancingAvailable = compat.vertexArrayObjectsSupported() &&
 				compat.drawInstancedSupported() &&

src/main/java/com/simibubi/create/foundation/render/backend/ShaderLoader.java

@@ -1,17 +1,16 @@
 package com.simibubi.create.foundation.render.backend;
 
 import com.google.common.collect.Lists;
-import com.google.common.collect.Sets;
 import com.mojang.blaze3d.systems.RenderSystem;
 import com.simibubi.create.foundation.render.backend.gl.GlFogMode;
 import com.simibubi.create.foundation.render.backend.gl.shader.*;
-import com.simibubi.create.foundation.render.backend.gl.versioned.GlFeatureCompat;
+
 import net.minecraft.resources.IResource;
 import net.minecraft.resources.IResourceManager;
 import net.minecraft.util.ResourceLocation;
 import net.minecraftforge.resource.IResourceType;
 import net.minecraftforge.resource.VanillaResourceType;
-import org.lwjgl.opengl.GL;
+
 import org.lwjgl.system.MemoryUtil;
 
 import java.io.*;

src/main/java/com/simibubi/create/foundation/render/backend/gl/shader/GlShader.java

@@ -4,6 +4,7 @@ import org.lwjgl.opengl.GL20;
 
 import com.simibubi.create.foundation.render.backend.Backend;
 import com.simibubi.create.foundation.render.backend.gl.GlObject;
+import com.simibubi.create.foundation.render.backend.gl.versioned.GlCompat;
 
 import net.minecraft.util.ResourceLocation;
 
@@ -17,7 +18,7 @@ public class GlShader extends GlObject {
         this.name = name;
         int handle = GL20.glCreateShader(type.glEnum);
 
-        GL20.glShaderSource(handle, source);
+        GlCompat.safeShaderSource(handle, source);
         GL20.glCompileShader(handle);
 
         String log = GL20.glGetShaderInfoLog(handle);

src/main/java/com/simibubi/create/foundation/render/backend/gl/versioned/GlCompat.java

@@ -1,6 +1,10 @@
 package com.simibubi.create.foundation.render.backend.gl.versioned;
 
+import org.lwjgl.PointerBuffer;
+import org.lwjgl.opengl.GL20C;
 import org.lwjgl.opengl.GLCapabilities;
+import org.lwjgl.system.MemoryStack;
+import org.lwjgl.system.MemoryUtil;
 
 import java.nio.ByteBuffer;
 import java.util.Arrays;
@@ -13,7 +17,7 @@ import java.util.function.Consumer;
  * Each field stores an enum variant that provides access to the
  * most appropriate version of a feature for the current system.
  */
-public class GlFeatureCompat {
+public class GlCompat {
     public final MapBuffer mapBuffer;
 
     public final VertexArrayObject vertexArrayObject;
@@ -22,7 +26,7 @@ public class GlFeatureCompat {
 
     public final RGPixelFormat pixelFormat;
 
-    public GlFeatureCompat(GLCapabilities caps) {
+    public GlCompat(GLCapabilities caps) {
         mapBuffer = getLatest(MapBuffer.class, caps);
 
         vertexArrayObject = getLatest(VertexArrayObject.class, caps);
@@ -85,5 +89,33 @@ public class GlFeatureCompat {
 
         return Arrays.stream(constants).filter(it -> it.supported(caps)).findFirst().get();
     }
+
+    /**
+     * Copied from:
+     * <br> https://github.com/grondag/canvas/commit/820bf754092ccaf8d0c169620c2ff575722d7d96
+     *
+     * <p>Identical in function to {@link GL20C#glShaderSource(int, CharSequence)} but
+     * passes a null pointer for string length to force the driver to rely on the null
+     * terminator for string length.  This is a workaround for an apparent flaw with some
+     * AMD drivers that don't receive or interpret the length correctly, resulting in
+     * an access violation when the driver tries to read past the string memory.
+     *
+     * <p>Hat tip to fewizz for the find and the fix.
+     */
+    public static void safeShaderSource(int glId, CharSequence source) {
+        final MemoryStack stack = MemoryStack.stackGet();
+        final int stackPointer = stack.getPointer();
+
+        try {
+            final ByteBuffer sourceBuffer = MemoryUtil.memUTF8(source, true);
+            final PointerBuffer pointers = stack.mallocPointer(1);
+            pointers.put(sourceBuffer);
+
+            GL20C.nglShaderSource(glId, 1, pointers.address0(), 0);
+            org.lwjgl.system.APIUtil.apiArrayFree(pointers.address0(), 1);
+        } finally {
+            stack.setPointer(stackPointer);
+        }
+    }
 }
 

src/main/java/com/simibubi/create/foundation/render/backend/instancing/InstancedTileRenderer.java

@@ -33,6 +33,7 @@ public abstract class InstancedTileRenderer<P extends BasicProgram> {
     protected Map<MaterialType<?>, RenderMaterial<P, ?>> materials = new HashMap<>();
 
     protected int frame;
+    protected int tick;
 
     protected InstancedTileRenderer() {
         registerMaterials();
@@ -43,6 +44,8 @@ public abstract class InstancedTileRenderer<P extends BasicProgram> {
     public abstract void registerMaterials();
 
     public void tick(double cameraX, double cameraY, double cameraZ) {
+        tick++;
+
         // integer camera pos
         int cX = (int) cameraX;
         int cY = (int) cameraY;
@@ -61,7 +64,7 @@ public abstract class InstancedTileRenderer<P extends BasicProgram> {
                 int dY = pos.getY() - cY;
                 int dZ = pos.getZ() - cZ;
 
-                if ((frame % getUpdateDivisor(dX, dY, dZ)) == 0)
+                if ((tick % getUpdateDivisor(dX, dY, dZ)) == 0)
                     instance.tick();
             }
         }
@@ -198,9 +201,9 @@ public abstract class InstancedTileRenderer<P extends BasicProgram> {
         int dY = worldPos.getY() - cY;
         int dZ = worldPos.getZ() - cZ;
 
-        float dot = dX * lookX + dY * lookY + dZ * lookZ;
+        float dot = (dX + lookX * 2) * lookX + (dY + lookY * 2) * lookY + (dZ + lookZ * 2) * lookZ;
 
-        if (dot < 0) return false; // is it behind the camera?
+        if (dot < 0) return false; // is it more than 2 blocks behind the camera?
 
         return (frame % getUpdateDivisor(dX, dY, dZ)) == 0;
     }