.

src/visualizations/projectmvisualization.cpp

@@ -144,7 +144,7 @@ void ProjectMVisualization::Init() {
   projectm_set_preset_duration(projectm_instance_, duration_);
   projectm_set_mesh_size(projectm_instance_, 32, 24);
   projectm_set_fps(projectm_instance_, 35);
-  projectm_set_window_size(projectm_instance_, 512, 512);
+  //projectm_set_window_size(projectm_instance_, 512, 512);
   projectm_playlist_instance_ = projectm_playlist_create(projectm_instance_);
 #else
   projectM::Settings s;
@@ -204,12 +204,26 @@ void ProjectMVisualization::RenderFrame(const int width, const int height) {
   Q_ASSERT(projectm_);
 #endif
 
+  //Resize(width, height);
+
 #ifdef HAVE_PROJECTM4
-  projectm_set_window_size(projectm_instance_, static_cast<size_t>(width * pixel_ratio_), static_cast<size_t>(height * pixel_ratio_));
   projectm_opengl_render_frame(projectm_instance_);
 #else
-  projectm_->projectM_resetGL(static_cast<int>(width * pixel_ratio_), static_cast<int>(height * pixel_ratio_));
   projectm_->renderFrame();
+#endif
+
+}
+
+void ProjectMVisualization::Resize(const int width, const int height) {
+
+#ifdef HAVE_PROJECTM4
+  if (projectm_instance_) {
+    projectm_set_window_size(projectm_instance_, static_cast<size_t>(width * pixel_ratio_), static_cast<size_t>(height * pixel_ratio_));
+  }
+#else
+  if (projectm_) {
+    projectm_->projectM_resetGL(static_cast<int>(width * pixel_ratio_), static_cast<int>(height * pixel_ratio_));
+  }
 #endif  // HAVE_PROJECTM4
 
 }
@@ -220,15 +234,7 @@ void ProjectMVisualization::SceneRectChanged(const QRectF &rect) {
   // Accessing the QScreen becomes a lot easier in Qt 5.14 with QWidget::screen().
   pixel_ratio_ = container_->devicePixelRatio();
 
-#ifdef HAVE_PROJECTM4
-  if (projectm_instance_) {
-    projectm_set_window_size(projectm_instance_, static_cast<size_t>(rect.width() * pixel_ratio_), static_cast<size_t>(rect.height() * pixel_ratio_));
-  }
-#else
-  if (projectm_) {
-    projectm_->projectM_resetGL(static_cast<int>(rect.width() * pixel_ratio_), static_cast<int>(rect.height() * pixel_ratio_));
-  }
-#endif  // HAVE_PROJECTM4
+  //Resize(rect.width(), rect.height());
 
 }
 

src/visualizations/projectmvisualization.h

@@ -66,6 +66,7 @@ class ProjectMVisualization : public QObject, public GstBufferConsumer {
 
   void Init();
   void RenderFrame(const int width, const int height);
+  void Resize(const int width, const int height);
 
   // BufferConsumer
   void ConsumeBuffer(GstBuffer *buffer, const int pipeline_id, const QString &format) override;

src/visualizations/visualizationopenglwidget.cpp

@@ -21,6 +21,7 @@
 
 #include <QPainter>
 
+#include "core/logging.h"
 #include "visualizationopenglwidget.h"
 #include "projectmvisualization.h"
 
@@ -44,4 +45,36 @@ void VisualizationOpenGLWidget::paintGL() {
   p.endNativePainting();
   update();
 
+  qLog(Debug) << __PRETTY_FUNCTION__ << glGetError();
+
+}
+
+void VisualizationOpenGLWidget::resizeGL(const int width, const int height) {
+
+  Setup(width, height);
+  projectm_visualization_->Resize(width, height);
+
+}
+
+void VisualizationOpenGLWidget::Setup(const int width, const int height) {
+
+  glShadeModel(GL_SMOOTH);
+  glClearColor(0, 0, 0, 0);
+  glViewport(0, 0, width, height);
+  glMatrixMode(GL_TEXTURE);
+  glLoadIdentity();
+  glMatrixMode(GL_PROJECTION);
+  glLoadIdentity();
+  glMatrixMode(GL_MODELVIEW);
+  glLoadIdentity();
+  glDrawBuffer(GL_BACK);
+  glReadBuffer(GL_BACK);
+  glEnable(GL_BLEND);
+
+  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+  glEnable(GL_LINE_SMOOTH);
+  glEnable(GL_POINT_SMOOTH);
+  glClearColor(0.0F, 0.0F, 0.0F, 0.0F);
+  glLineStipple(2, 0xAAAA);
+
 }

src/visualizations/visualizationopenglwidget.h

@@ -35,6 +35,10 @@ class VisualizationOpenGLWidget : public QOpenGLWidget {
  protected:
   void initializeGL() override;
   void paintGL() override;
+  void resizeGL(const int width, const int height) override;
+
+ private:
+  void Setup(const int width, const int height);
 
  private:
   ProjectMVisualization *projectm_visualization_;