Explicitly set OpenGL as the graphics API for QtQuick (#712)

azeey · web-flow · commit 6a2c59c440ce · 2025-09-03T15:59:00.000-05:00
The default rendering backend has been changed to Direct3D 11 in Qt6 (see https://doc.qt.io/qt-6/qtquick-visualcanvas-scenegraph-renderer.html#rendering-via-the-qt-rendering-hardware-interface). Without this change, Gazebo crashes on windows as it tries to initialize an OpenGL context. Signed-off-by: Addisu Z. Taddese <addisu@openrobotics.org>
diff --git a/src/Application.cc b/src/Application.cc
@@ -168,6 +168,7 @@ Application::Application(int &_argc, char **_argv, const WindowType _type,
   }
   else
   {
+    QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGL);
     gzdbg << "Qt using OpenGL graphics interface" << std::endl;
   }
 #endif

Original file line number	Diff line number	Diff line change
`@@ -168,6 +168,7 @@ Application::Application(int &_argc, char **_argv, const WindowType _type,`
`168`	`168`	`}`
`169`	`169`	`else`
`170`	`170`	`{`
	`171`	`+ QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGL);`
`171`	`172`	`gzdbg << "Qt using OpenGL graphics interface" << std::endl;`
`172`	`173`	`}`
`173`	`174`	`#endif`