--- src/gl_manager.h.orig	2026-04-27 00:00:00.000000000 +0000
+++ src/gl_manager.h	2026-04-27 00:01:00.000000000 +0000
@@ -50,6 +50,10 @@ private:

   int m_width{-1}, m_height{-1};

+  // Track GL version and VAO availability for GL 2.x compatibility
+  bool m_use_gl2{false};
+  bool m_have_vao{false};
+
   IdWrapper<ShaderId> m_vertex, m_fragment;
   IdWrapper<ProgramId> m_program;
   IdWrapper<VertexArrayId> m_vao;