From f829d8047a7cddb18695b1209ff34690198fb701 Mon Sep 17 00:00:00 2001
From: Silvio Traversaro <silvio.traversaro@iit.it>
Date: Tue, 23 Apr 2024 13:55:26 +0200
Subject: [PATCH] Ogre2RenderEngine: on Windows if useCurrentGLContext is
 specified, set the externalWindowsHandle ogre-next option

Signed-off-by: Silvio Traversaro <silvio.traversaro@iit.it>
---
 ogre2/src/Ogre2RenderEngine.cc | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/ogre2/src/Ogre2RenderEngine.cc b/ogre2/src/Ogre2RenderEngine.cc
index c83edd987..93ee74c41 100644
--- a/ogre2/src/Ogre2RenderEngine.cc
+++ b/ogre2/src/Ogre2RenderEngine.cc
@@ -1263,6 +1263,22 @@ std::string Ogre2RenderEngine::CreateRenderWindow(const std::string &_handle,
   {
     params["externalGLControl"] = "true";
     params["currentGLContext"] = "true";
+
+#if defined(_MSC_VER)
+    if (!this->winID.empty())
+    {
+      params["externalWindowHandle"] = this->winID;
+    }
+    else
+    {
+      gzerr << "useCurrentGLContext option specified, "
+            << "but no winID specified." << std::endl
+            << "On Windows if useCurrentGLContext is specified, "
+            << "the ogre2 rendering requires that also winID is specified."
+            << std::endl;
+      return std::string();
+    }
+#endif
   }
 
 #if !defined(__APPLE__) && !defined(_MSC_VER)