Use QGLWidget instead of QOpenGLWidget, as the latter is too slow.

[nageru] / glwidget.h

diff --git a/glwidget.h b/glwidget.h
index d2ff50cb5017ea48ba3698d5febafa8de604252e..bb62940d6d5a16830db12797b837c956fd73b7cb 100644 (file)
--- a/glwidget.h
+++ b/glwidget.h
@@ -1,13 +1,17 @@
 #ifndef GLWIDGET_H
 #define GLWIDGET_H
 
-#include <QOpenGLWidget>
+#include <QGLWidget>
 
 namespace movit {
 class ResourcePool;
 }
 
-class GLWidget : public QOpenGLWidget
+// Note: We use the older QGLWidget instead of QOpenGLWidget as it is
+// much faster (does not go through a separate offscreen rendering step).
+//
+// TODO: Consider if QOpenGLWindow could do what we want.
+class GLWidget : public QGLWidget
 {
        Q_OBJECT
 
@@ -17,6 +21,7 @@ public:
 
 protected:
        void initializeGL() override;
+       void resizeGL(int width, int height) override;
        void paintGL() override;
 
 private: