From c8b178e0a0683af728444ec930ae86c23bcd6fef Mon Sep 17 00:00:00 2001
From: Tanner Collin <git@tannercollin.com>
Date: Mon, 9 Feb 2026 17:43:23 -0700
Subject: [PATCH] fix: Enable OpenGL depth test and face culling for View Cube

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>
---
 src/ViewportWidget.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ViewportWidget.cpp b/src/ViewportWidget.cpp
index b1599dd..e8e2e30 100644
--- a/src/ViewportWidget.cpp
+++ b/src/ViewportWidget.cpp
@@ -45,6 +45,9 @@ void ViewportWidget::paintGL()
     glViewport(0, 0, width(), height());
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
+    glEnable(GL_DEPTH_TEST);
+    glEnable(GL_CULL_FACE);
+
     QMatrix4x4 model;
     model.translate(panX, panY, zoom);
     model.rotate(xRot / 16.0f, 1, 0, 0);