I asked question is on the Windows desktop Qt5.14.2, is not a mobile terminal, also does not have the Qt section, but the PC as the ask the great spirit, question is like this, I recently in learning, OpenGL use freeglut wrote a point Sprite examples of procedures, can display properly, and then I'll want to migrate to Qt program, according to the results of how to write that effect is wrong, finally I get looked at dependswalker dependent libraries, find Qt5Gui and Qt5Widgets library underlying can only rely on DirectX, does not depend on the OpenGL library, so it is Qt does not support OpenGL bottom, just put the OpenGL to perform DirectX? Isn't this a pit, first turn a layer, more certainly wasted efficiency, followed by some OpenGL features, certainly not perfect support,