]> de.git.xonotic.org Git - xonotic/netradiant.git/blobdiff - libs/gtkutil/glwidget.cpp
Enable auto-redraw of the GLArea on GTK3
[xonotic/netradiant.git] / libs / gtkutil / glwidget.cpp
index 746b8f0f9202d34b92a8a0c079ff98591a0ff4e4..f463b8b30268f2617a019c62287ba1a54bee8bee 100644 (file)
 
 #include "glwidget.h"
 
-#include "debugging/debugging.h"
-
 #include "igl.h"
 
-#include <gtk/gtkdrawingarea.h>
-#include <gtk/gtkglwidget.h>
+void (*GLWidget_sharedContextCreated)() = 0;
 
-#include "pointer.h"
+void (*GLWidget_sharedContextDestroyed)() = 0;
 
-void ( *GLWidget_sharedContextCreated )() = 0;
-void ( *GLWidget_sharedContextDestroyed )() = 0;
+unsigned int g_context_count = 0;
 
+ui::GLArea g_shared{ui::null};
 
-typedef int* attribs_t;
-struct config_t
+static void _glwidget_context_created(ui::GLArea self, void *data)
 {
-       const char* name;
-       attribs_t attribs;
-};
-typedef const config_t* configs_iterator;
-
-int config_rgba32[] = {
-       GDK_GL_RGBA,
-       GDK_GL_DOUBLEBUFFER,
-       GDK_GL_BUFFER_SIZE, 24,
-       GDK_GL_ATTRIB_LIST_NONE,
-};
+    if (++g_context_count == 1) {
+        g_shared = self;
+        g_object_ref(g_shared._handle);
 
-int config_rgba[] = {
-       GDK_GL_RGBA,
-       GDK_GL_DOUBLEBUFFER,
-       GDK_GL_BUFFER_SIZE, 16,
-       GDK_GL_ATTRIB_LIST_NONE,
-};
+        glwidget_make_current(g_shared);
+        GlobalOpenGL().contextValid = true;
 
-const config_t configs[] = {
-       {
-               "colour-buffer = 32bpp, depth-buffer = none",
-               config_rgba32,
-       },
-       {
-               "colour-buffer = 16bpp, depth-buffer = none",
-               config_rgba,
-       }
-};
+        GLWidget_sharedContextCreated();
+    }
+}
 
-GdkGLConfig* glconfig_new(){
-       GdkGLConfig* glconfig = 0;
+static void _glwidget_context_destroyed(ui::GLArea self, void *data)
+{
+    if (--g_context_count == 0) {
+        GlobalOpenGL().contextValid = false;
 
-       for ( configs_iterator i = configs, end = configs + 2; i != end; ++i )
-       {
-               glconfig = gdk_gl_config_new( ( *i ).attribs );
-               if ( glconfig != 0 ) {
-                       globalOutputStream() << "OpenGL window configuration: " << ( *i ).name << "\n";
-                       return glconfig;
-               }
-       }
+        GLWidget_sharedContextDestroyed();
 
-       globalOutputStream() << "OpenGL window configuration: colour-buffer = auto, depth-buffer = none\n";
-       return gdk_gl_config_new_by_mode( (GdkGLConfigMode)( GDK_GL_MODE_RGBA | GDK_GL_MODE_DOUBLE ) );
+        g_shared.unref();
+        g_shared = ui::GLArea(ui::null);
+    }
 }
 
-int config_rgba32_depth32[] = {
-       GDK_GL_RGBA,
-       GDK_GL_DOUBLEBUFFER,
-       GDK_GL_BUFFER_SIZE, 24,
-       GDK_GL_DEPTH_SIZE, 32,
-       GDK_GL_ATTRIB_LIST_NONE,
-};
-
-int config_rgba32_depth24[] = {
-       GDK_GL_RGBA,
-       GDK_GL_DOUBLEBUFFER,
-       GDK_GL_BUFFER_SIZE, 24,
-       GDK_GL_DEPTH_SIZE, 24,
-       GDK_GL_ATTRIB_LIST_NONE,
-};
-
-int config_rgba32_depth16[] = {
-       GDK_GL_RGBA,
-       GDK_GL_DOUBLEBUFFER,
-       GDK_GL_BUFFER_SIZE, 24,
-       GDK_GL_DEPTH_SIZE, 16,
-       GDK_GL_ATTRIB_LIST_NONE,
-};
+void glwidget_destroy_context(ui::GLArea self)
+{
+}
 
-int config_rgba32_depth[] = {
-       GDK_GL_RGBA,
-       GDK_GL_DOUBLEBUFFER,
-       GDK_GL_BUFFER_SIZE, 24,
-       GDK_GL_DEPTH_SIZE, 1,
-       GDK_GL_ATTRIB_LIST_NONE,
-};
+void glwidget_create_context(ui::GLArea self)
+{
+}
 
-int config_rgba_depth16[] = {
-       GDK_GL_RGBA,
-       GDK_GL_DOUBLEBUFFER,
-       GDK_GL_BUFFER_SIZE, 16,
-       GDK_GL_DEPTH_SIZE, 16,
-       GDK_GL_ATTRIB_LIST_NONE,
-};
+#if GTK_TARGET == 3
 
-int config_rgba_depth[] = {
-       GDK_GL_RGBA,
-       GDK_GL_DOUBLEBUFFER,
-       GDK_GL_BUFFER_SIZE, 16,
-       GDK_GL_DEPTH_SIZE, 1,
-       GDK_GL_ATTRIB_LIST_NONE,
-};
+#include <gtk/gtk.h>
 
-const config_t configs_with_depth[] =
+static GdkGLContext *glwidget_context_created(ui::GLArea self)
 {
-       {
-               "colour-buffer = 32bpp, depth-buffer = 32bpp",
-               config_rgba32_depth32,
-       },
-       {
-               "colour-buffer = 32bpp, depth-buffer = 24bpp",
-               config_rgba32_depth24,
-       },
-       {
-               "colour-buffer = 32bpp, depth-buffer = 16bpp",
-               config_rgba32_depth16,
-       },
-       {
-               "colour-buffer = 32bpp, depth-buffer = auto",
-               config_rgba32_depth,
-       },
-       {
-               "colour-buffer = 16bpp, depth-buffer = 16bpp",
-               config_rgba_depth16,
-       },
-       {
-               "colour-buffer = auto, depth-buffer = auto",
-               config_rgba_depth,
-       },
-};
-
-GdkGLConfig* glconfig_new_with_depth(){
-       GdkGLConfig* glconfig = 0;
+    _glwidget_context_created(self, nullptr);
+    return gtk_gl_area_get_context(self);
+}
 
-       for ( configs_iterator i = configs_with_depth, end = configs_with_depth + 6; i != end; ++i )
-       {
-               glconfig = gdk_gl_config_new( ( *i ).attribs );
-               if ( glconfig != 0 ) {
-                       globalOutputStream() << "OpenGL window configuration: " << ( *i ).name << "\n";
-                       return glconfig;
-               }
-       }
+ui::GLArea glwidget_new(bool zbuffer)
+{
+    auto self = ui::GLArea::from(GTK_GL_AREA(gtk_gl_area_new()));
+    gtk_gl_area_set_has_depth_buffer(self, zbuffer);
+    gtk_gl_area_set_auto_render(self, true); // FIXME
 
-       globalOutputStream() << "OpenGL window configuration: colour-buffer = auto, depth-buffer = auto (fallback)\n";
-       return gdk_gl_config_new_by_mode( (GdkGLConfigMode)( GDK_GL_MODE_RGBA | GDK_GL_MODE_DOUBLE | GDK_GL_MODE_DEPTH ) );
+    self.connect("realize", G_CALLBACK(glwidget_context_created), nullptr);
+    return self;
 }
 
-unsigned int g_context_count = 0;
+bool glwidget_make_current(ui::GLArea self)
+{
+//    if (!g_context_count) {
+//        glwidget_context_created(self);
+//    }
+    gtk_gl_area_make_current(self);
+    auto valid = GlobalOpenGL().contextValid;
+    return true;
+}
 
-namespace
+void glwidget_swap_buffers(ui::GLArea self)
 {
-GtkWidget* g_shared = 0;
+    g_assert(GTK_IS_GL_AREA(self));
+    gtk_gl_area_queue_render(self);
 }
 
-gint glwidget_context_created( GtkWidget* widget, gpointer data ){
-       if ( ++g_context_count == 1 ) {
-               g_shared = widget;
-               gtk_widget_ref( g_shared );
+#endif
 
-               glwidget_make_current( g_shared );
-               GlobalOpenGL().contextValid = true;
+#if GTK_TARGET == 2
 
-               GLWidget_sharedContextCreated();
-       }
-       return FALSE;
-}
+#include <gtk/gtk.h>
+#include <gtk/gtkglwidget.h>
+
+#include "pointer.h"
+
+struct config_t {
+    const char *name;
+    int *attribs;
+};
+typedef const config_t *configs_iterator;
+
+static int config_rgba32[] = {
+        GDK_GL_RGBA,
+        GDK_GL_DOUBLEBUFFER,
+        GDK_GL_BUFFER_SIZE, 24,
+        GDK_GL_ATTRIB_LIST_NONE,
+};
 
-gint glwidget_context_destroyed( GtkWidget* widget, gpointer data ){
-       if ( --g_context_count == 0 ) {
-               GlobalOpenGL().contextValid = false;
+static int config_rgba[] = {
+        GDK_GL_RGBA,
+        GDK_GL_DOUBLEBUFFER,
+        GDK_GL_BUFFER_SIZE, 16,
+        GDK_GL_ATTRIB_LIST_NONE,
+};
 
-               GLWidget_sharedContextDestroyed();
+static const config_t configs[] = {
+        {
+                "colour-buffer = 32bpp, depth-buffer = none",
+                config_rgba32,
+        },
+        {
+                "colour-buffer = 16bpp, depth-buffer = none",
+                config_rgba,
+        }
+};
 
-               gtk_widget_unref( g_shared );
-               g_shared = 0;
-       }
-       return FALSE;
+static GdkGLConfig *glconfig_new()
+{
+    for (configs_iterator i = configs, end = configs + 2; i != end; ++i) {
+        if (auto glconfig = gdk_gl_config_new(i->attribs)) {
+            globalOutputStream() << "OpenGL window configuration: " << i->name << "\n";
+            return glconfig;
+        }
+    }
+    globalOutputStream() << "OpenGL window configuration: colour-buffer = auto, depth-buffer = none\n";
+    return gdk_gl_config_new_by_mode((GdkGLConfigMode) (GDK_GL_MODE_RGBA | GDK_GL_MODE_DOUBLE));
 }
 
-gboolean glwidget_enable_gl( GtkWidget* widget, GtkWidget* widget2, gpointer data ){
-       if ( widget2 == 0 && !gtk_widget_is_gl_capable( widget ) ) {
-               GdkGLConfig* glconfig = ( g_object_get_data( G_OBJECT( widget ), "zbuffer" ) ) ? glconfig_new_with_depth() : glconfig_new();
-               ASSERT_MESSAGE( glconfig != 0, "failed to create OpenGL config" );
+static int config_rgba32_depth32[] = {
+        GDK_GL_RGBA,
+        GDK_GL_DOUBLEBUFFER,
+        GDK_GL_BUFFER_SIZE,
+        24,
+        GDK_GL_DEPTH_SIZE,
+        32,
+        GDK_GL_ATTRIB_LIST_NONE,
+};
 
-               gtk_widget_set_gl_capability( widget, glconfig, g_shared != 0 ? gtk_widget_get_gl_context( g_shared ) : 0,  TRUE, GDK_GL_RGBA_TYPE );
+static int config_rgba32_depth24[] = {
+        GDK_GL_RGBA,
+        GDK_GL_DOUBLEBUFFER,
+        GDK_GL_BUFFER_SIZE, 24,
+        GDK_GL_DEPTH_SIZE, 24,
+        GDK_GL_ATTRIB_LIST_NONE,
+};
 
-               gtk_widget_realize( widget );
-               if ( g_shared == 0 ) {
-                       g_shared = widget;
-               }
+static int config_rgba32_depth16[] = {
+        GDK_GL_RGBA,
+        GDK_GL_DOUBLEBUFFER,
+        GDK_GL_BUFFER_SIZE, 24,
+        GDK_GL_DEPTH_SIZE, 16,
+        GDK_GL_ATTRIB_LIST_NONE,
+};
 
-               // free glconfig?
-       }
-       return FALSE;
-}
+static int config_rgba32_depth[] = {
+        GDK_GL_RGBA,
+        GDK_GL_DOUBLEBUFFER,
+        GDK_GL_BUFFER_SIZE, 24,
+        GDK_GL_DEPTH_SIZE, 1,
+        GDK_GL_ATTRIB_LIST_NONE,
+};
 
-GtkWidget* glwidget_new( gboolean zbuffer ){
-       GtkWidget* widget = gtk_drawing_area_new();
+static int config_rgba_depth16[] = {
+        GDK_GL_RGBA,
+        GDK_GL_DOUBLEBUFFER,
+        GDK_GL_BUFFER_SIZE, 16,
+        GDK_GL_DEPTH_SIZE, 16,
+        GDK_GL_ATTRIB_LIST_NONE,
+};
 
-       g_object_set_data( G_OBJECT( widget ), "zbuffer", gint_to_pointer( zbuffer ) );
+static int config_rgba_depth[] = {
+        GDK_GL_RGBA,
+        GDK_GL_DOUBLEBUFFER,
+        GDK_GL_BUFFER_SIZE, 16,
+        GDK_GL_DEPTH_SIZE, 1,
+        GDK_GL_ATTRIB_LIST_NONE,
+};
 
-       g_signal_connect( G_OBJECT( widget ), "hierarchy-changed", G_CALLBACK( glwidget_enable_gl ), 0 );
+static const config_t configs_with_depth[] =
+        {
+                {
+                        "colour-buffer = 32bpp, depth-buffer = 32bpp",
+                        config_rgba32_depth32,
+                },
+                {
+                        "colour-buffer = 32bpp, depth-buffer = 24bpp",
+                        config_rgba32_depth24,
+                },
+                {
+                        "colour-buffer = 32bpp, depth-buffer = 16bpp",
+                        config_rgba32_depth16,
+                },
+                {
+                        "colour-buffer = 32bpp, depth-buffer = auto",
+                        config_rgba32_depth,
+                },
+                {
+                        "colour-buffer = 16bpp, depth-buffer = 16bpp",
+                        config_rgba_depth16,
+                },
+                {
+                        "colour-buffer = auto, depth-buffer = auto",
+                        config_rgba_depth,
+                },
+        };
+
+static GdkGLConfig *glconfig_new_with_depth()
+{
+    for (configs_iterator i = configs_with_depth, end = configs_with_depth + 6; i != end; ++i) {
+        if (auto glconfig = gdk_gl_config_new(i->attribs)) {
+            globalOutputStream() << "OpenGL window configuration: " << i->name << "\n";
+            return glconfig;
+        }
+    }
+    globalOutputStream() << "OpenGL window configuration: colour-buffer = auto, depth-buffer = auto (fallback)\n";
+    return gdk_gl_config_new_by_mode((GdkGLConfigMode) (GDK_GL_MODE_RGBA | GDK_GL_MODE_DOUBLE | GDK_GL_MODE_DEPTH));
+}
 
-       g_signal_connect( G_OBJECT( widget ), "realize", G_CALLBACK( glwidget_context_created ), 0 );
-       g_signal_connect( G_OBJECT( widget ), "unrealize", G_CALLBACK( glwidget_context_destroyed ), 0 );
+static int glwidget_context_created(ui::GLArea self, void *data)
+{
+    _glwidget_context_created(self, data);
+    return false;
+}
 
-       return widget;
+int glwidget_context_destroyed(ui::GLArea self, void *data)
+{
+    _glwidget_context_destroyed(self, data);
+    return false;
 }
 
-void glwidget_destroy_context( GtkWidget *widget ){
+static bool glwidget_enable_gl(ui::GLArea self, ui::Widget root, gpointer data)
+{
+    if (!root && !gtk_widget_is_gl_capable(self)) {
+        const auto zbuffer = g_object_get_data(G_OBJECT(self), "zbuffer");
+        GdkGLConfig *glconfig = zbuffer ? glconfig_new_with_depth() : glconfig_new();
+        ASSERT_MESSAGE(glconfig, "failed to create OpenGL config");
+
+        const auto share_list = g_shared ? gtk_widget_get_gl_context(g_shared) : nullptr;
+        gtk_widget_set_gl_capability(self, glconfig, share_list, true, GDK_GL_RGBA_TYPE);
+
+        gtk_widget_realize(self);
+        if (!g_shared) {
+            g_shared = self;
+        }
+        // free glconfig?
+    }
+    return false;
 }
 
-void glwidget_create_context( GtkWidget *widget ){
+ui::GLArea glwidget_new(bool zbuffer)
+{
+    auto self = ui::GLArea::from(gtk_drawing_area_new());
+
+    g_object_set_data(G_OBJECT(self), "zbuffer", gint_to_pointer(zbuffer));
+
+    self.connect("hierarchy-changed", G_CALLBACK(glwidget_enable_gl), 0);
+
+    self.connect("realize", G_CALLBACK(glwidget_context_created), 0);
+    self.connect("unrealize", G_CALLBACK(glwidget_context_destroyed), 0);
+
+    return self;
 }
 
-void glwidget_swap_buffers( GtkWidget *widget ){
-       GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable( widget );
-       gdk_gl_drawable_swap_buffers( gldrawable );
+void glwidget_swap_buffers(ui::GLArea self)
+{
+    GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(self);
+    gdk_gl_drawable_swap_buffers(gldrawable);
 }
 
-gboolean glwidget_make_current( GtkWidget *widget ){
-       GdkGLContext *glcontext = gtk_widget_get_gl_context( widget );
-       GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable( widget );
-       return gdk_gl_drawable_gl_begin( gldrawable, glcontext );
+bool glwidget_make_current(ui::GLArea self)
+{
+    GdkGLContext *glcontext = gtk_widget_get_gl_context(self);
+    GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(self);
+    return gdk_gl_drawable_gl_begin(gldrawable, glcontext);
 }
+
+#endif