diff --git a/fabric-renderer-indigo/src/main/java/net/fabricmc/indigo/renderer/helper/BufferBuilderTransformHelper.java b/fabric-renderer-indigo/src/main/java/net/fabricmc/indigo/renderer/helper/BufferBuilderTransformHelper.java
deleted file mode 100644
index 7aff07785..000000000
--- a/fabric-renderer-indigo/src/main/java/net/fabricmc/indigo/renderer/helper/BufferBuilderTransformHelper.java
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Copyright (c) 2016, 2017, 2018, 2019 FabricMC
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package net.fabricmc.indigo.renderer.helper;
-
-import com.google.common.collect.Sets;
-import net.minecraft.client.render.VertexFormat;
-import net.minecraft.client.render.VertexFormats;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-
-import java.util.Map;
-import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
-
-public class BufferBuilderTransformHelper {
-	/**
-	 * Fast copying mode; used only if the vanilla format is an exact match.
-	 */
-	public static final int MODE_COPY_FAST = 0;
-
-	/**
-	 * Padded copying mode; used when the vanilla format is an exact match,
-	 * but includes additional data at the end. Will emit a warning.
-	 */
-	public static final int MODE_COPY_PADDED = 1;
-
-	/**
-	 * ShadersMod compatibility mode; as MODE_COPY_PADDED, but populates in
-	 * the correct normal values as provided by the mod.
-	 *
-	 * Assumes a format of [vertex, color, texture, lmap, normal], all in
-	 * their respective vanilla formats, plus any amount of additional data
-	 * afterwards.
-	 */
-	public static final int MODE_COPY_PADDED_SHADERSMOD = 2;
-
-	/**
-	 * Unsupported mode; an error will be emitted and no quads will be
-	 * pushed to the buffer builder.
-	 */
-	public static final int MODE_UNSUPPORTED = 3;
-
-	private static final Map<VertexFormat, Integer> vertexFormatCache = new ConcurrentHashMap<>();
-	private static final Set<VertexFormat> errorEmittedFormats = Sets.newConcurrentHashSet();
-	private static final Logger logger = LogManager.getLogger();
-
-	public static void emitUnsupportedError(VertexFormat format) {
-		// This can be slow, as it's only called on unsupported formats - which is already an error condition.
-		if (errorEmittedFormats.add(format)) {
-			logger.error("[Indigo] Unsupported vertex format! " + format);
-		}
-	}
-
-	private static int computeProcessingMode(VertexFormat f) {
-		if (
-			f.getElementCount() >= 4 && f.getVertexSizeInteger() >= 7
-				&& f.getElement(0).equals(VertexFormats.POSITION_ELEMENT)
-				&& f.getElement(1).equals(VertexFormats.COLOR_ELEMENT)
-				&& f.getElement(2).equals(VertexFormats.UV_ELEMENT)
-		) {
-			if (
-				f.getElement(3).equals(VertexFormats.LMAP_ELEMENT)
-					|| f.getElement(3).equals(VertexFormats.NORMAL_ELEMENT)
-			) {
-				if (
-					f.getElementCount() >= 5
-						&& f.getElement(3).equals(VertexFormats.LMAP_ELEMENT)
-						&& f.getElement(4).equals(VertexFormats.NORMAL_ELEMENT)
-				) {
-					logger.debug("[Indigo] Classified format as ShadersMod-compatible: " + f);
-					return MODE_COPY_PADDED_SHADERSMOD;
-				} else if (f.getElementCount() == 4) {
-					logger.debug("[Indigo] Classified format as vanilla-like: " + f);
-					return MODE_COPY_FAST;
-				} else {
-					logger.debug("[Indigo] Unsupported but likely vanilla-compliant vertex format. " + f);
-					return MODE_COPY_PADDED;
-				}
-			}
-		}
-
-		return MODE_UNSUPPORTED;
-	}
-
-	public static int getProcessingMode(VertexFormat format) {
-		// Fast passthrough for the most common vanilla block/item formats.
-		if (format == VertexFormats.POSITION_COLOR_UV_LMAP || format == VertexFormats.POSITION_COLOR_UV_NORMAL) {
-			return MODE_COPY_FAST;
-		} else {
-			Integer cached = vertexFormatCache.get(format);
-
-			if (cached == null) {
-				// VertexFormats are mutable, so we need to make an immutable copy.
-				format = new VertexFormat(format);
-				cached = computeProcessingMode(format);
-				vertexFormatCache.put(format, cached);
-			}
-
-			return cached;
-		}
-	}
-}