From ab88923c857d9652699980b307c4d6a25a9c6cab Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Mon, 6 Apr 2026 17:32:26 +0200
Subject: [PATCH] Add water contact patch collection and material update in
 viewport-host.ts

---
 src/viewport-three/viewport-host.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/viewport-three/viewport-host.ts b/src/viewport-three/viewport-host.ts
index 172b905a..86fabf79 100644
--- a/src/viewport-three/viewport-host.ts
+++ b/src/viewport-three/viewport-host.ts
@@ -3116,13 +3116,16 @@ export class ViewportHost {
       );
 
       const previousMaterials = renderObjects.mesh.material;
+      const contactPatches =
+        brush.volume.mode === "water" ? this.collectViewportWaterContactPatches(this.currentDocument, brush.id, brush.center, brush.rotationDegrees, brush.size) : [];
       renderObjects.mesh.material = BOX_FACE_IDS.map((faceId) =>
         this.createFaceMaterial(
           brush,
           faceId,
           this.currentDocument?.materials[brush.faces[faceId].materialId ?? ""],
           this.getFaceHighlightState(brush.id, faceId),
-          volumeRenderPaths
+          volumeRenderPaths,
+          contactPatches
         )
       );