From 8f677cc0c6f589ae279d9c8a6c04dcf6e00d51d9 Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Wed, 20 Dec 2023 09:43:04 -0800
Subject: [PATCH] Assign draw order to surfaces using plane splitter

---
 crates/gpui2/src/scene.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/crates/gpui2/src/scene.rs b/crates/gpui2/src/scene.rs
index 811b2b6e30..e6b601b62f 100644
--- a/crates/gpui2/src/scene.rs
+++ b/crates/gpui2/src/scene.rs
@@ -104,6 +104,15 @@ impl SceneBuilder {
             );
         }
 
+        for (ix, surface) in self.surfaces.iter().enumerate() {
+            let z = layer_z_values[surface.order as LayerId as usize];
+            self.splitter.add(
+                surface
+                    .bounds
+                    .to_bsp_polygon(z, (PrimitiveKind::Surface, ix)),
+            );
+        }
+
         // Sort all polygons, then reassign the order field of each primitive to `draw_order`
         // We need primitives to be repr(C), hence the weird reuse of the order field for two different types.
         for (draw_order, polygon) in self