Complete 2D solid workflow

src/scene/pipeline/mod.rs

@@ -312,12 +312,12 @@ pub struct Pipeline {
     /// a pick bumps only `selection_generation`, refreshing the overlay without
     /// touching the main wire buffers.
     pub cached_selection: (u64, u64),
-    /// `(wire_content_id, face3d_fill_active, show_2d_solid_fills)` the Face3D
+    /// `(wire_content_id, face3d_fill_active, show_2d_solid_fills, view_dir)` the Face3D
     /// edge/fill buffers were uploaded for. A stable content id avoids retaining
     /// the resident wire Arc:
     /// that Arc must stay uniquely owned by Scene so a small edit can splice it
     /// in place instead of rebuilding the whole drawing.
-    pub cached_face3d_key: (u64, bool, bool),
+    pub cached_face3d_key: (u64, bool, bool, [u32; 3]),
     /// Handle → indices into the resident wire set, built once per wire upload
     /// (when `cached_wire_id` changes). Lets the selection/hover xray overlay
     /// gather just the highlighted entity's wires (`O(highlighted)`) instead of
@@ -2323,7 +2323,7 @@ impl Pipeline {
             cached_epoch: (u64::MAX, u64::MAX, u64::MAX),
             cached_wire_id: u64::MAX,
             cached_selection: (u64::MAX, u64::MAX),
-            cached_face3d_key: (u64::MAX, false, false),
+            cached_face3d_key: (u64::MAX, false, false, [u32::MAX; 3]),
             wire_handle_index: std::sync::Arc::new(rustc_hash::FxHashMap::default()),
             render_sig: u64::MAX,
             skip_geometry: false,
@@ -3023,6 +3023,7 @@ impl Pipeline {
         all_wires: &[WireModel],
         wireframe_only: bool,
         show_2d_solid_fills: bool,
+        view_dir: glam::Vec3,
         depth_map: &rustc_hash::FxHashMap<u64, [f32; 2]>,
     ) {
         let perf_started = crate::perf::enabled().then(iced::time::Instant::now);
@@ -3056,6 +3057,7 @@ impl Pipeline {
                 all_wires,
                 keep_3d_mesh_fills,
                 show_2d_solid_fills,
+                view_dir,
                 depth_map,
             ));
         }