Fallback RenderType impl

src/main/java/net/coderbot/batchedentityrendering/mixin/MixinRenderType.java

@@ -0,0 +1,15 @@
+package net.coderbot.batchedentityrendering.mixin;
+
+import net.coderbot.batchedentityrendering.impl.BlendingStateHolder;
+import net.coderbot.batchedentityrendering.impl.TransparencyType;
+import net.minecraft.client.renderer.RenderType;
+import org.spongepowered.asm.mixin.Mixin;
+
+@Mixin(RenderType.class)
+public class MixinRenderType implements BlendingStateHolder {
+	// Fallback
+	@Override
+	public TransparencyType getTransparencyType() {
+		return TransparencyType.GENERAL_TRANSPARENT;
+	}
+}

src/main/resources/iris-batched-entity-rendering.mixins.json

@@ -9,6 +9,7 @@
     "MixinBufferBuilder",
     "MixinBufferBuilder_SegmentRendering",
     "MixinRenderBuffers",
+    "MixinRenderType",
     "MixinDebugScreenOverlay",
     "MixinFishingHookRenderer",
     "MixinBufferSource",