From 68bc9c6921f13d820e3273d04eb10648960cb38d Mon Sep 17 00:00:00 2001
From: grimmauld <soeren@benjos.de>
Date: Thu, 22 Apr 2021 22:47:43 +0200
Subject: [PATCH] Fix some instanced rendering

---
 .../content/optics/mirror/MirrorBehaviour.java      | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/simibubi/create/content/optics/mirror/MirrorBehaviour.java b/src/main/java/com/simibubi/create/content/optics/mirror/MirrorBehaviour.java
index a1607a0d5..9437ec2e1 100644
--- a/src/main/java/com/simibubi/create/content/optics/mirror/MirrorBehaviour.java
+++ b/src/main/java/com/simibubi/create/content/optics/mirror/MirrorBehaviour.java
@@ -14,9 +14,11 @@ import com.simibubi.create.foundation.utility.AngleHelper;
 import com.simibubi.create.foundation.utility.AnimationTickHolder;
 import com.simibubi.create.foundation.utility.VecHelper;
 
+import net.minecraft.nbt.CompoundNBT;
 import net.minecraft.util.Direction;
 import net.minecraft.util.math.vector.Quaternion;
 import net.minecraft.util.math.vector.Vector3d;
+import net.minecraft.util.math.vector.Vector3f;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.fml.DistExecutor;
@@ -54,12 +56,21 @@ public class MirrorBehaviour extends AbstractRotatedLightRelayBehaviour<MirrorTi
 	@OnlyIn(Dist.CLIENT)
 	@Nonnull
 	public Quaternion getBufferedRotationQuaternion() {
-		if (bufferedRotationQuaternion == null)
+		if (bufferedRotationQuaternion == null) {
 			bufferedRotationQuaternion = getBeamRotationAround().getUnitVector()
 					.getDegreesQuaternion(getInterpolatedAngle(AnimationTickHolder.getPartialTicks() - 1));
+			bufferedRotationQuaternion.multiply(Vector3f.POSITIVE_Y.getDegreesQuaternion(AngleHelper.horizontalAngle(getBeamRotationAround())));
+			bufferedRotationQuaternion.multiply(Vector3f.POSITIVE_X.getDegreesQuaternion(AngleHelper.verticalAngle(getBeamRotationAround())));
+		}
 		return bufferedRotationQuaternion;
 	}
 
+	@Override
+	public void read(CompoundNBT nbt, boolean clientPacket) {
+		super.read(nbt, clientPacket);
+		bufferedRotationQuaternion = null;
+	}
+
 	@Nonnull
 	@Override
 	public Direction getBeamRotationAround() {