304 lines
8 KiB
C++
304 lines
8 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// OpenGL widget based on GtkGLExt
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#include "glwidget.h"
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#include "igl.h"
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void (*GLWidget_sharedContextCreated)() = 0;
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void (*GLWidget_sharedContextDestroyed)() = 0;
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unsigned int g_context_count = 0;
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ui::GLArea g_shared{ui::null};
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void _glwidget_context_created(ui::GLArea self, void *data)
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{
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if (++g_context_count == 1) {
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g_shared = self;
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g_object_ref(g_shared._handle);
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glwidget_make_current(g_shared);
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GlobalOpenGL().contextValid = true;
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GLWidget_sharedContextCreated();
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}
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}
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void _glwidget_context_destroyed(ui::GLArea self, void *data)
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{
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if (--g_context_count == 0) {
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GlobalOpenGL().contextValid = false;
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GLWidget_sharedContextDestroyed();
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g_shared.unref();
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g_shared = ui::GLArea(ui::null);
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}
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}
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void glwidget_destroy_context(ui::GLArea self)
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{
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}
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void glwidget_create_context(ui::GLArea self)
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{
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}
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#if GTK_TARGET == 3
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#include <gtk/gtk.h>
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GdkGLContext *glwidget_context_created(ui::GLArea self)
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{
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_glwidget_context_created(self, nullptr);
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return gtk_gl_area_get_context(self);
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}
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ui::GLArea glwidget_new(bool zbuffer)
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{
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auto self = ui::GLArea(GTK_GL_AREA(gtk_gl_area_new()));
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gtk_gl_area_set_has_depth_buffer(self, zbuffer);
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gtk_gl_area_set_auto_render(self, false);
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self.connect("realize", G_CALLBACK(glwidget_context_created), nullptr);
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return self;
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}
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bool glwidget_make_current(ui::GLArea self)
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{
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// if (!g_context_count) {
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// glwidget_context_created(self);
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// }
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gtk_gl_area_make_current(self);
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auto valid = GlobalOpenGL().contextValid;
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return true;
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}
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void glwidget_swap_buffers(ui::GLArea self)
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{
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gtk_gl_area_queue_render(self);
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}
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#endif
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#if GTK_TARGET == 2
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#include <gtk/gtk.h>
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#include <gtk/gtkglwidget.h>
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#include "pointer.h"
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struct config_t {
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const char *name;
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int *attribs;
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};
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typedef const config_t *configs_iterator;
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int config_rgba32[] = {
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GDK_GL_RGBA,
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GDK_GL_DOUBLEBUFFER,
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GDK_GL_BUFFER_SIZE, 24,
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GDK_GL_ATTRIB_LIST_NONE,
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};
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int config_rgba[] = {
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GDK_GL_RGBA,
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GDK_GL_DOUBLEBUFFER,
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GDK_GL_BUFFER_SIZE, 16,
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GDK_GL_ATTRIB_LIST_NONE,
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};
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const config_t configs[] = {
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{
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"colour-buffer = 32bpp, depth-buffer = none",
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config_rgba32,
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},
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{
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"colour-buffer = 16bpp, depth-buffer = none",
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config_rgba,
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}
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};
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GdkGLConfig *glconfig_new()
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{
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for (configs_iterator i = configs, end = configs + 2; i != end; ++i) {
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if (auto glconfig = gdk_gl_config_new(i->attribs)) {
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globalOutputStream() << "OpenGL window configuration: " << i->name << "\n";
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return glconfig;
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}
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}
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globalOutputStream() << "OpenGL window configuration: colour-buffer = auto, depth-buffer = none\n";
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return gdk_gl_config_new_by_mode((GdkGLConfigMode) (GDK_GL_MODE_RGBA | GDK_GL_MODE_DOUBLE));
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}
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int config_rgba32_depth32[] = {
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GDK_GL_RGBA,
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GDK_GL_DOUBLEBUFFER,
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GDK_GL_BUFFER_SIZE,
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24,
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GDK_GL_DEPTH_SIZE,
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32,
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GDK_GL_ATTRIB_LIST_NONE,
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};
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int config_rgba32_depth24[] = {
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GDK_GL_RGBA,
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GDK_GL_DOUBLEBUFFER,
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GDK_GL_BUFFER_SIZE, 24,
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GDK_GL_DEPTH_SIZE, 24,
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GDK_GL_ATTRIB_LIST_NONE,
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};
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int config_rgba32_depth16[] = {
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GDK_GL_RGBA,
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GDK_GL_DOUBLEBUFFER,
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GDK_GL_BUFFER_SIZE, 24,
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GDK_GL_DEPTH_SIZE, 16,
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GDK_GL_ATTRIB_LIST_NONE,
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};
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int config_rgba32_depth[] = {
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GDK_GL_RGBA,
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GDK_GL_DOUBLEBUFFER,
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GDK_GL_BUFFER_SIZE, 24,
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GDK_GL_DEPTH_SIZE, 1,
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GDK_GL_ATTRIB_LIST_NONE,
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};
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int config_rgba_depth16[] = {
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GDK_GL_RGBA,
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GDK_GL_DOUBLEBUFFER,
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GDK_GL_BUFFER_SIZE, 16,
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GDK_GL_DEPTH_SIZE, 16,
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GDK_GL_ATTRIB_LIST_NONE,
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};
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int config_rgba_depth[] = {
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GDK_GL_RGBA,
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GDK_GL_DOUBLEBUFFER,
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GDK_GL_BUFFER_SIZE, 16,
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GDK_GL_DEPTH_SIZE, 1,
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GDK_GL_ATTRIB_LIST_NONE,
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};
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const config_t configs_with_depth[] =
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{
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{
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"colour-buffer = 32bpp, depth-buffer = 32bpp",
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config_rgba32_depth32,
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},
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{
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"colour-buffer = 32bpp, depth-buffer = 24bpp",
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config_rgba32_depth24,
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},
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{
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"colour-buffer = 32bpp, depth-buffer = 16bpp",
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config_rgba32_depth16,
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},
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{
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"colour-buffer = 32bpp, depth-buffer = auto",
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config_rgba32_depth,
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},
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{
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"colour-buffer = 16bpp, depth-buffer = 16bpp",
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config_rgba_depth16,
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},
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{
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"colour-buffer = auto, depth-buffer = auto",
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config_rgba_depth,
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},
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};
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GdkGLConfig *glconfig_new_with_depth()
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{
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for (configs_iterator i = configs_with_depth, end = configs_with_depth + 6; i != end; ++i) {
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if (auto glconfig = gdk_gl_config_new(i->attribs)) {
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globalOutputStream() << "OpenGL window configuration: " << i->name << "\n";
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return glconfig;
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}
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}
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globalOutputStream() << "OpenGL window configuration: colour-buffer = auto, depth-buffer = auto (fallback)\n";
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return gdk_gl_config_new_by_mode((GdkGLConfigMode) (GDK_GL_MODE_RGBA | GDK_GL_MODE_DOUBLE | GDK_GL_MODE_DEPTH));
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}
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int glwidget_context_created(ui::GLArea self, void *data)
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{
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_glwidget_context_created(self, data);
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return false;
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}
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int glwidget_context_destroyed(ui::GLArea self, void *data)
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{
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_glwidget_context_destroyed(self, data);
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return false;
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}
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bool glwidget_enable_gl(ui::GLArea self, ui::Widget root, gpointer data)
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{
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if (!root && !gtk_widget_is_gl_capable(self)) {
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const auto zbuffer = g_object_get_data(G_OBJECT(self), "zbuffer");
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GdkGLConfig *glconfig = zbuffer ? glconfig_new_with_depth() : glconfig_new();
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ASSERT_MESSAGE(glconfig, "failed to create OpenGL config");
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const auto share_list = g_shared ? gtk_widget_get_gl_context(g_shared) : nullptr;
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gtk_widget_set_gl_capability(self, glconfig, share_list, true, GDK_GL_RGBA_TYPE);
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gtk_widget_realize(self);
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if (!g_shared) {
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g_shared = self;
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}
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// free glconfig?
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}
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return false;
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}
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ui::GLArea glwidget_new(bool zbuffer)
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{
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auto self = ui::GLArea::from(gtk_drawing_area_new());
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g_object_set_data(G_OBJECT(self), "zbuffer", gint_to_pointer(zbuffer));
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self.connect("hierarchy-changed", G_CALLBACK(glwidget_enable_gl), 0);
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self.connect("realize", G_CALLBACK(glwidget_context_created), 0);
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self.connect("unrealize", G_CALLBACK(glwidget_context_destroyed), 0);
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return self;
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}
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void glwidget_swap_buffers(ui::GLArea self)
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{
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GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(self);
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gdk_gl_drawable_swap_buffers(gldrawable);
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}
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bool glwidget_make_current(ui::GLArea self)
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{
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GdkGLContext *glcontext = gtk_widget_get_gl_context(self);
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GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(self);
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return gdk_gl_drawable_gl_begin(gldrawable, glcontext);
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}
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#endif
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