diff --git a/src/ossia/dataflow/data_copy.hpp b/src/ossia/dataflow/data_copy.hpp
index 8a55b5ce0f8..23a6c033d83 100644
--- a/src/ossia/dataflow/data_copy.hpp
+++ b/src/ossia/dataflow/data_copy.hpp
@@ -32,7 +32,10 @@ struct data_size
 
   std::size_t operator()(const audio_delay_line& p) const { return p.samples.size(); }
 
-  std::size_t operator()(const geometry_delay_line& p) const { return p.meshes.size(); }
+  std::size_t operator()(const geometry_delay_line& p) const
+  {
+    return p.geometries.size();
+  }
 
   std::size_t operator()(const ossia::monostate&) const { return 0; }
   std::size_t operator()() const { return 0; }
@@ -63,7 +66,7 @@ struct move_data
   {
     // OPTIMIZEME
     // if(out.flags & geometry_port::dirty_meshes)
-    in.meshes = out.meshes; //std::move(out.meshes);
+    in.geometry = out.geometry; //std::move(out.meshes);
     // if(out.flags & geometry_port::dirty_transform)
     in.transform = out.transform;
     in.flags = out.flags;
@@ -158,23 +161,23 @@ struct copy_data
   {
     // Called in init_node_visitor::copy, when copying from a node to another
     //if(out.flags & geometry_port::dirty_meshes)
-    in.meshes = out.meshes;
+    in.geometry = out.geometry;
     //if(out.flags & geometry_port::dirty_transform)
     in.transform = out.transform;
     in.flags = out.flags;
   }
 
-  void operator()(const mesh_list_ptr& out, geometry_port& in)
+  void operator()(const geometry_spec& out, geometry_port& in)
   {
     // Called in copy_data_pos below
-    in.meshes = out;
+    in.geometry = out;
   }
 
   void operator()(const geometry_port& out, geometry_delay_line& in)
   {
     // Called in env_writer, when copying from a node to a delay line
     // if(out.flags & geometry_port::dirty_meshes)
-    in.meshes.push_back(out.meshes);
+    in.geometries.push_back(out.geometry);
   }
 };
 
@@ -212,9 +215,9 @@ struct copy_data_pos
   }
   void operator()(const geometry_delay_line& out, geometry_port& in)
   {
-    if(pos < out.meshes.size())
+    if(pos < out.geometries.size())
     {
-      copy_data{}(out.meshes[pos], in);
+      copy_data{}(out.geometries[pos], in);
     }
   }
 };
diff --git a/src/ossia/dataflow/geometry_port.hpp b/src/ossia/dataflow/geometry_port.hpp
index 0117f71d4f9..1baf823bd96 100644
--- a/src/ossia/dataflow/geometry_port.hpp
+++ b/src/ossia/dataflow/geometry_port.hpp
@@ -105,6 +105,47 @@ struct transform3d
   };
 };
 
+struct geometry_filter
+{
+  int64_t node_id{}; // which node is responsible for initalizing the UBO
+  int64_t filter_id{}; // unique index for this filter instance
+  /**
+   * @brief shader
+   *
+   * ```
+   * layout(std140, binding = %next%) uniform filter_t {
+   *   float v;
+   * } filter;
+   * void process_vertex(inout vec3 position, inout vec3 normal, inout vec2 uv, inout vec3 tangent, inout vec4 color)
+   * {
+   *   position.xyz += v; 
+   * }
+   * ```
+   */
+  std::string shader;
+  int64_t dirty_index{};
+};
+
+struct geometry_filter_list
+{
+  std::vector<geometry_filter> filters;
+  int64_t dirty_index{};
+};
+using geometry_filter_list_ptr = std::shared_ptr<geometry_filter_list>;
+
+struct geometry_spec
+{
+  mesh_list_ptr meshes;
+  geometry_filter_list_ptr filters;
+
+  operator bool() const noexcept { return meshes && filters; }
+  bool operator==(const geometry_spec&) const noexcept = default;
+  bool operator<(const geometry_spec& rhs) const noexcept
+  {
+    return (meshes < rhs.meshes) || (meshes == rhs.meshes && filters < rhs.filters);
+  }
+};
+
 struct OSSIA_EXPORT geometry_port
 {
   static const constexpr int which = 4;
@@ -116,14 +157,14 @@ struct OSSIA_EXPORT geometry_port
 
   void clear();
 
-  mesh_list_ptr meshes;
+  geometry_spec geometry;
   transform3d transform;
   uint8_t flags{};
 };
 
 struct geometry_delay_line
 {
-  std::vector<mesh_list_ptr> meshes;
+  std::vector<geometry_spec> geometries;
 };
 
 }
diff --git a/src/ossia/dataflow/port.hpp b/src/ossia/dataflow/port.hpp
index 74c0e2a6685..79da473d442 100644
--- a/src/ossia/dataflow/port.hpp
+++ b/src/ossia/dataflow/port.hpp
@@ -531,7 +531,7 @@ inline T* inlet::target() noexcept
   {
     if(which() == 4)
     {
-      return static_cast<geometry_inlet*>(this)->data;
+      return &static_cast<geometry_inlet*>(this)->data;
     }
     else
     {
@@ -595,7 +595,7 @@ inline T* outlet::target() noexcept
   {
     if(which() == 4)
     {
-      return static_cast<geometry_outlet*>(this)->data;
+      return &static_cast<geometry_outlet*>(this)->data;
     }
     else
     {