diff --git a/src/main.cpp b/src/main.cpp
index 33a3bb8..d11011a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -7,9 +7,8 @@
 
 int main(int argc, char *argv[])
 {
+    // only support AA_UseDesktopOpenGL
     QApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
-    //QApplication::setAttribute(Qt::AA_UseOpenGLES);
-    //QApplication::setAttribute(Qt::AA_UseSoftwareOpenGL);
 
     QApplication a(argc, argv);