Add a new OpenGL pyramid sample

This sample shows the use of modern OpenGL (3.2).

Closes #16910.

samples/opengl/pyramid/pyramid.h

@@ -0,0 +1,88 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        pyramid.h
+// Purpose:     OpenGL version >= 3.2 sample
+// Author:      Manuel Martin
+// Created:     2015/11/05
+// Copyright:   (c) 2015 Manuel Martin
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef PYRSAMLE_H
+#define PYRSAMLE_H
+
+// Define a new application
+class MyApp: public wxApp
+{
+public:
+    MyApp(){};
+    bool OnInit() wxOVERRIDE;
+};
+
+
+class MyGLCanvas;
+
+// The main frame class
+class MyFrame : public wxFrame
+{
+public:
+    MyFrame(const wxString& title);
+
+    void OnAbout(wxCommandEvent& event);
+    void OnQuit(wxCommandEvent& event);
+#if wxUSE_LOGWINDOW
+    void OnLogWindow(wxCommandEvent& event);
+#endif // wxUSE_LOGWINDOW
+    void SetOGLString(const wxString& ogls)
+        { m_OGLString = ogls; }
+    bool OGLAvailable();
+
+private:
+#if wxUSE_LOGWINDOW
+    wxLogWindow* m_LogWin;
+#endif // wxUSE_LOGWINDOW
+    wxString     m_OGLString;
+    MyGLCanvas*  m_mycanvas;
+
+    wxDECLARE_EVENT_TABLE();
+};
+
+
+// The canvas window
+class MyGLCanvas : public wxGLCanvas
+{
+public:
+    MyGLCanvas(MyFrame* parent, const wxGLAttributes& canvasAttrs);
+    ~MyGLCanvas();
+
+    //Used just to know if we must end now because OGL 3.2 isn't available
+    bool OglCtxAvailable()
+        {return m_oglContext != NULL;}
+
+    //Init the OpenGL stuff
+    bool oglInit();
+
+    void OnPaint(wxPaintEvent& event);
+    void OnSize(wxSizeEvent& event);
+    void OnMouse(wxMouseEvent& event);
+
+private:
+    // Members
+    MyFrame*      m_parent;
+    wxGLContext*  m_oglContext;
+    myOGLManager* m_oglManager;
+    int           m_winHeight; // We use this var to know if we have been sized
+
+    wxDECLARE_EVENT_TABLE();
+};
+
+
+// IDs for the controls and the menu commands
+enum
+{
+    Pyramid_Quit = wxID_EXIT,
+    Pyramid_About = wxID_ABOUT,
+    Pyramid_LogW = wxID_HIGHEST + 10
+};
+
+#endif // PYRSAMLE_H
+