6 static gboolean expose_start(GtkWidget *da, GdkEventExpose *event, gpointer user_data)
8 GdkGLContext *glcontext = gtk_widget_get_gl_context (da);
9 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (da);
11 if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext)) {
12 g_assert_not_reached ();
16 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
18 /* Plugins run stuff here */
19 static gboolean expose_end(GtkWidget *da, GdkEventExpose *event, gpointer user_data)
21 GdkGLContext *glcontext = gtk_widget_get_gl_context (da);
22 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (da);
24 if (gdk_gl_drawable_is_double_buffered (gldrawable))
25 gdk_gl_drawable_swap_buffers (gldrawable);
29 gdk_gl_drawable_gl_end (gldrawable);
33 static gboolean configure(GtkWidget *da, GdkEventConfigure *event, gpointer user_data)
35 GdkGLContext *glcontext = gtk_widget_get_gl_context (da);
36 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (da);
38 if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext))
39 g_assert_not_reached ();
42 glViewport (0, 0, da->allocation.width, da->allocation.height);
43 glOrtho (-10,10,-10,10,-20050,10000);
45 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
47 glScalef (10., 10., 10.);
49 gdk_gl_drawable_gl_end (gldrawable);
54 gboolean opengl_init(GtkDrawingArea *drawing, GtkNotebook *config)
56 /* Set up OpenGL Stuff */
57 g_signal_connect(drawing, "configure-event", G_CALLBACK(configure), NULL);
59 //g_signal_connect(drawing, "expose-event", G_CALLBACK(expose), NULL);
60 g_signal_connect (drawing, "expose-event", G_CALLBACK(expose_start), NULL);
61 g_signal_connect_after(drawing, "expose-event", G_CALLBACK(expose_end), NULL);