From 05b3aeb2bd22e95adc1296bcaa46a78671bdca2b Mon Sep 17 00:00:00 2001
From: Erwan MATHIEU <erwan.mathieu@ultimaker.com>
Date: Wed, 1 Oct 2025 16:38:50 +0200
Subject: [PATCH] Pre-cache faces connectivity during prepare job

CURA-12743
This avoids a huge slowdown when starting to paint
---
 plugins/PaintTool/PrepareTextureJob.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plugins/PaintTool/PrepareTextureJob.py b/plugins/PaintTool/PrepareTextureJob.py
index 6c5e61c009..1e5cce6c51 100644
--- a/plugins/PaintTool/PrepareTextureJob.py
+++ b/plugins/PaintTool/PrepareTextureJob.py
@@ -31,3 +31,5 @@ class PrepareTextureJob(Job):
             # Force clear OpenGL buffer so that new UV coordinates will be sent
             delattr(mesh, OpenGL.VertexBufferProperty)
 
+        # Also cache the faces connection, can be quite long to compute
+        self._node.getMeshData().getFacesConnections()