+++ /dev/null
-/*
-Copyright (C) 2001-2006, William Joseph.
-All Rights Reserved.
-
-This file is part of GtkRadiant.
-
-GtkRadiant is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-GtkRadiant is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GtkRadiant; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-*/
-
-// OpenGL widget based on GtkGLExt
-
-#include "glwidget.h"
-
-#include "debugging/debugging.h"
-
-#include "igl.h"
-
-#include <gtk/gtkdrawingarea.h>
-#include <gtk/gtkglwidget.h>
-
-#include "pointer.h"
-
-void (*GLWidget_sharedContextCreated)() = 0;
-void (*GLWidget_sharedContextDestroyed)() = 0;
-
-
-typedef int* attribs_t;
-struct config_t
-{
- 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,
-};
-
-int config_rgba[] = {
- GDK_GL_RGBA,
- GDK_GL_DOUBLEBUFFER,
- GDK_GL_BUFFER_SIZE, 16,
- GDK_GL_ATTRIB_LIST_NONE,
-};
-
-const config_t configs[] = {
- {
- "colour-buffer = 32bpp, depth-buffer = none",
- config_rgba32,
- },
- {
- "colour-buffer = 16bpp, depth-buffer = none",
- config_rgba,
- }
-};
-
-GdkGLConfig* glconfig_new()
-{
- GdkGLConfig* glconfig = 0;
-
- 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;
- }
- }
-
- 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));
-}
-
-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,
-};
-
-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,
-};
-
-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,
-};
-
-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,
-};
-
-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,
- },
-};
-
-GdkGLConfig* glconfig_new_with_depth()
-{
- GdkGLConfig* glconfig = 0;
-
- 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;
- }
- }
-
- 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));
-}
-
-unsigned int g_context_count = 0;
-
-namespace
-{
- GtkWidget* g_shared = 0;
-}
-
-gint glwidget_context_created(GtkWidget* widget, gpointer data)
-{
- if(++g_context_count == 1)
- {
- g_shared = widget;
- gtk_widget_ref(g_shared);
-
- glwidget_make_current(g_shared);
- GlobalOpenGL().contextValid = true;
-
- GLWidget_sharedContextCreated();
- }
- return FALSE;
-}
-
-gint glwidget_context_destroyed(GtkWidget* widget, gpointer data)
-{
- if(--g_context_count == 0)
- {
- GlobalOpenGL().contextValid = false;
-
- GLWidget_sharedContextDestroyed();
-
- gtk_widget_unref(g_shared);
- g_shared = 0;
- }
- return FALSE;
-}
-
-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");
-
- gtk_widget_set_gl_capability(widget, glconfig, g_shared != 0 ? gtk_widget_get_gl_context(g_shared) : 0, TRUE, GDK_GL_RGBA_TYPE);
-
- gtk_widget_realize(widget);
- if(g_shared == 0)
- {
- g_shared = widget;
- }
-
- // free glconfig?
- }
- return FALSE;
-}
-
-GtkWidget* glwidget_new(gboolean zbuffer)
-{
- GtkWidget* widget = gtk_drawing_area_new();
-
- g_object_set_data(G_OBJECT(widget), "zbuffer", gint_to_pointer(zbuffer));
-
- g_signal_connect(G_OBJECT(widget), "hierarchy-changed", G_CALLBACK(glwidget_enable_gl), 0);
-
- 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);
-
- return widget;
-}
-
-void glwidget_destroy_context (GtkWidget *widget)
-{
-}
-
-void glwidget_create_context (GtkWidget *widget)
-{
-}
-
-void glwidget_swap_buffers (GtkWidget *widget)
-{
- GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (widget);
- 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);
-}
-
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