diff --git a/src/main/java/io/gitlab/jfronny/respackopts/Respackopts.java b/src/main/java/io/gitlab/jfronny/respackopts/Respackopts.java
index 13c5a74..45ece6a 100644
--- a/src/main/java/io/gitlab/jfronny/respackopts/Respackopts.java
+++ b/src/main/java/io/gitlab/jfronny/respackopts/Respackopts.java
@@ -4,6 +4,8 @@ import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import io.gitlab.jfronny.libjf.data.WrappedPack;
 import io.gitlab.jfronny.respackopts.data.DirRpo;
+import io.gitlab.jfronny.respackopts.data.PackCapability;
+import io.gitlab.jfronny.respackopts.data.Respackmeta;
 import io.gitlab.jfronny.respackopts.data.Rpo;
 import io.gitlab.jfronny.respackopts.data.entry.*;
 import io.gitlab.jfronny.respackopts.filters.DirFilterProvider;
@@ -36,7 +38,7 @@ import java.util.concurrent.CompletableFuture;
 
 @Environment(EnvType.CLIENT)
 public class Respackopts implements ClientModInitializer {
-    public static final Integer META_VERSION = 4;
+    public static final Integer META_VERSION = 5;
     public static final String ID = "respackopts";
     public static final Identifier CONF_ID = new Identifier(ID, "conf.json");
     public static final Logger LOGGER = LogManager.getFormatterLogger(ID);
@@ -45,6 +47,7 @@ public class Respackopts implements ClientModInitializer {
     public static Path CONF_DIR;
 
     public static final Map<String, ConfigBranch> CONFIG_BRANCH = new HashMap<>();
+    public static final Map<String, Respackmeta> PACK_METAS = new HashMap<>();
     public static final Map<String, String> DISPLAY_NAME_LOOKUP = new HashMap<>();
     public static final Map<String, String> PACK_NAME_LOOKUP = new HashMap<>();
 
@@ -82,6 +85,12 @@ public class Respackopts implements ClientModInitializer {
         return PACK_NAME_LOOKUP.get(pack.getName());
     }
 
+    public static boolean hasCapability(WrappedPack pack, PackCapability capability) {
+        String id = getId(pack);
+        if (id == null) return false;
+        return PACK_METAS.get(id).capabilities.contains(capability);
+    }
+
     @Override
     public void onInitializeClient() {
         try {
diff --git a/src/main/java/io/gitlab/jfronny/respackopts/data/PackCapability.java b/src/main/java/io/gitlab/jfronny/respackopts/data/PackCapability.java
new file mode 100644
index 0000000..8a0be9a
--- /dev/null
+++ b/src/main/java/io/gitlab/jfronny/respackopts/data/PackCapability.java
@@ -0,0 +1,5 @@
+package io.gitlab.jfronny.respackopts.data;
+
+public enum PackCapability {
+    FileFilter, DirFilter, DirFilterAdditive
+}
diff --git a/src/main/java/io/gitlab/jfronny/respackopts/data/Respackmeta.java b/src/main/java/io/gitlab/jfronny/respackopts/data/Respackmeta.java
index 0561ae4..c5f5780 100644
--- a/src/main/java/io/gitlab/jfronny/respackopts/data/Respackmeta.java
+++ b/src/main/java/io/gitlab/jfronny/respackopts/data/Respackmeta.java
@@ -2,8 +2,11 @@ package io.gitlab.jfronny.respackopts.data;
 
 import io.gitlab.jfronny.respackopts.data.entry.ConfigBranch;
 
+import java.util.Set;
+
 public class Respackmeta {
     public ConfigBranch conf;
     public String id;
     public Integer version;
+    public Set<PackCapability> capabilities = Set.of(PackCapability.FileFilter);
 }
diff --git a/src/main/java/io/gitlab/jfronny/respackopts/filters/DirFilterProvider.java b/src/main/java/io/gitlab/jfronny/respackopts/filters/DirFilterProvider.java
index 8a0d771..bccb91f 100644
--- a/src/main/java/io/gitlab/jfronny/respackopts/filters/DirFilterProvider.java
+++ b/src/main/java/io/gitlab/jfronny/respackopts/filters/DirFilterProvider.java
@@ -5,6 +5,7 @@ import io.gitlab.jfronny.libjf.data.UserResourceEvents;
 import io.gitlab.jfronny.libjf.data.WrappedPack;
 import io.gitlab.jfronny.respackopts.Respackopts;
 import io.gitlab.jfronny.respackopts.data.DirRpo;
+import io.gitlab.jfronny.respackopts.data.PackCapability;
 import io.gitlab.jfronny.respackopts.data.RpoError;
 import io.gitlab.jfronny.respackopts.filters.conditions.ConditionEvaluator;
 import net.minecraft.util.Identifier;
@@ -14,6 +15,8 @@ import java.io.*;
 public class DirFilterProvider {
     public static void init() {
         UserResourceEvents.OPEN.register((type, id, previous, pack) -> {
+            if (!Respackopts.hasCapability(pack, PackCapability.DirFilter))
+                return previous;
             String path = new ResourcePath(type, id).getName();
             DirRpo rpo = findDirRpo(pack, path);
             if (rpo != null && dirHidden(rpo, Respackopts.getId(pack))) {
@@ -27,19 +30,40 @@ public class DirFilterProvider {
         UserResourceEvents.FIND_RESOURCE.register((type, namespace, prefix, maxDepth, pathFilter, previous, pack) -> {
             // Warning: the Identifiers here DON'T CONTAIN THE TYPE!
             // Therefore, it needs to be added when calling a method that generates a ResourcePath!
+            if (!Respackopts.hasCapability(pack, PackCapability.DirFilter))
+                return previous;
+            boolean dirFilterAdditive = Respackopts.hasCapability(pack, PackCapability.DirFilterAdditive);
             //TODO support files that weren't there at the original location
             for (Identifier identifier : previous) {
                 String path = type.getDirectory() + "/" + identifier.getNamespace() + "/" + identifier.getPath();
                 DirRpo rpo = findDirRpo(pack, path);
-                if (rpo != null && dirHidden(rpo, Respackopts.getId(pack))) {
-                    path = findReplacementDir(path, rpo);
-                    if (path == null)
-                        previous.remove(identifier);
+                if (rpo != null) {
+                    if (dirHidden(rpo, Respackopts.getId(pack))) {
+                        path = findReplacementDir(path, rpo);
+                        if (path == null)
+                            previous.remove(identifier);
+                        else if (dirFilterAdditive) {
+                            String[] s = path.split("/", 3);
+                            if (s.length == 3) {
+                                ResourcePath rp = new ResourcePath(path);
+                                //TODO this implementation is stupid
+                                for (Identifier resource : pack.findResources(rp.getType(), rp.getId().getNamespace(), rp.getId().getPath(), maxDepth, (a) -> true)) {
+                                    String p = type.getDirectory() + "/" + resource.getNamespace() + "/" + resource.getPath();
+                                    p = p.replace(rpo.fallback, rpo.path + "/");
+                                    rp = new ResourcePath(p);
+                                    if (pathFilter.test(p))
+                                        previous.add(rp.getId());
+                                }
+                            }
+                        }
+                    }
                 }
             }
             return previous;
         });
         UserResourceEvents.CONTAINS.register((type, id, previous, pack) -> {
+            if (!Respackopts.hasCapability(pack, PackCapability.DirFilter))
+                return previous;
             String path = new ResourcePath(type, id).getName();
             DirRpo rpo = findDirRpo(pack, path);
             if (rpo != null && dirHidden(rpo, Respackopts.getId(pack))) {
diff --git a/src/main/java/io/gitlab/jfronny/respackopts/filters/FileFilterProvider.java b/src/main/java/io/gitlab/jfronny/respackopts/filters/FileFilterProvider.java
index b515e86..24b5d40 100644
--- a/src/main/java/io/gitlab/jfronny/respackopts/filters/FileFilterProvider.java
+++ b/src/main/java/io/gitlab/jfronny/respackopts/filters/FileFilterProvider.java
@@ -3,6 +3,8 @@ package io.gitlab.jfronny.respackopts.filters;
 import io.gitlab.jfronny.libjf.data.ResourcePath;
 import io.gitlab.jfronny.libjf.data.UserResourceEvents;
 import io.gitlab.jfronny.libjf.data.WrappedPack;
+import io.gitlab.jfronny.respackopts.Respackopts;
+import io.gitlab.jfronny.respackopts.data.PackCapability;
 import io.gitlab.jfronny.respackopts.filters.conditions.ResourcePackFilter;
 import io.gitlab.jfronny.respackopts.filters.expansion.DataExpander;
 import io.gitlab.jfronny.respackopts.filters.fallback.FallbackFilter;
@@ -61,6 +63,6 @@ public class FileFilterProvider {
     }
 
     private static boolean skip(WrappedPack pack) {
-        return !(pack.getUnderlying() instanceof AbstractFileResourcePack);
+        return !(pack.getUnderlying() instanceof AbstractFileResourcePack) || !Respackopts.hasCapability(pack, PackCapability.FileFilter);
     }
 }
diff --git a/src/main/java/io/gitlab/jfronny/respackopts/mixin/ResourcePackManagerMixin.java b/src/main/java/io/gitlab/jfronny/respackopts/mixin/ResourcePackManagerMixin.java
index 1d60044..38aa21a 100644
--- a/src/main/java/io/gitlab/jfronny/respackopts/mixin/ResourcePackManagerMixin.java
+++ b/src/main/java/io/gitlab/jfronny/respackopts/mixin/ResourcePackManagerMixin.java
@@ -4,6 +4,7 @@ import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import io.gitlab.jfronny.respackopts.Respackopts;
 import io.gitlab.jfronny.respackopts.data.MetadataLocateResult;
+import io.gitlab.jfronny.respackopts.data.PackCapability;
 import io.gitlab.jfronny.respackopts.data.Respackmeta;
 import io.gitlab.jfronny.respackopts.data.entry.SyncMode;
 import net.minecraft.resource.ResourcePack;
@@ -41,12 +42,15 @@ public class ResourcePackManagerMixin {
                         Respackopts.LOGGER.warn(s + " uses an outdated RPO format (" + conf.version + "). Although this is supported, using the latest version (" + Respackopts.META_VERSION + ") is recommended");
                     }
                     conf.conf.setVersion(conf.version);
+                    if (conf.version < 5)
+                        conf.capabilities.add(PackCapability.DirFilter);
                     if (!Respackopts.CONFIG_BRANCH.containsKey(conf.id))
                         Respackopts.CONFIG_BRANCH.put(conf.id, conf.conf);
                     else
                         Respackopts.CONFIG_BRANCH.get(conf.id).sync(conf.conf, SyncMode.RESPACK_LOAD);
                     Respackopts.DISPLAY_NAME_LOOKUP.put(v.getDisplayName().asString(), conf.id);
                     Respackopts.PACK_NAME_LOOKUP.put(v.createResourcePack().getName(), conf.id);
+                    Respackopts.PACK_METAS.put(conf.id, conf);
                     Respackopts.load(conf.id);
                 } catch (Throwable e) {
                     Respackopts.LOGGER.error("Could not initialize pack meta for " + s, e);