libqt4-opengl 4:4.8.7+dfsg-20ubuntu2 (armhf binary) in ubuntu focal

 Qt is a cross-platform C++ application framework. Qt's primary feature
 is its rich set of widgets that provide standard GUI functionality.
 .
 The QtOpenGL module offers classes that make it easy to use OpenGL in Qt
 applications.
 .
 OpenGL is a standard API for rendering 3D graphics. OpenGL only deals with 3D
 rendering and provides little or no support for GUI programming issues.