The gtkGLext based 3D emulation.
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masscat
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/* $Id: gdk_3Demu.c,v 1.1 2007-04-17 16:49:33 masscat Exp $
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*/
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/*
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Copyright (C) 2006-2007 Ben Jaques
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This file is part of DeSmuME
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DeSmuME 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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DeSmuME 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 DeSmuME; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifdef GTKGLEXT_AVAILABLE
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#include <gdk/gdkgl.h>
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#include "../types.h"
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#include "../render3D.h"
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#include "../opengl_collector_3Demu.h"
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#include "gdk_3Demu.h"
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/*
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* The GDK 3D emulation.
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* This uses the OpenGL Collector plugin, using gdkGLext for the platform
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* specific helper functions.
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*/
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static GdkPixmap *target_pixmap;
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static GdkGLContext *glcontext = NULL;
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static GdkGLDrawable *gldrawable;
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static void
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print_gl_config_attrib (GdkGLConfig *glconfig,
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const gchar *attrib_str,
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int attrib,
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gboolean is_boolean)
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{
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int value;
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g_print ("%s = ", attrib_str);
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if (gdk_gl_config_get_attrib (glconfig, attrib, &value))
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{
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if (is_boolean)
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g_print ("%s\n", value == TRUE ? "TRUE" : "FALSE");
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else
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g_print ("%d\n", value);
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}
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else
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g_print ("*** Cannot get %s attribute value\n", attrib_str);
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}
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static void
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examine_gl_config_attrib (GdkGLConfig *glconfig)
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{
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g_print ("\nOpenGL visual configurations :\n\n");
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g_print ("gdk_gl_config_is_rgba (glconfig) = %s\n",
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gdk_gl_config_is_rgba (glconfig) ? "TRUE" : "FALSE");
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g_print ("gdk_gl_config_is_double_buffered (glconfig) = %s\n",
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gdk_gl_config_is_double_buffered (glconfig) ? "TRUE" : "FALSE");
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g_print ("gdk_gl_config_is_stereo (glconfig) = %s\n",
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gdk_gl_config_is_stereo (glconfig) ? "TRUE" : "FALSE");
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g_print ("gdk_gl_config_has_alpha (glconfig) = %s\n",
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gdk_gl_config_has_alpha (glconfig) ? "TRUE" : "FALSE");
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g_print ("gdk_gl_config_has_depth_buffer (glconfig) = %s\n",
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gdk_gl_config_has_depth_buffer (glconfig) ? "TRUE" : "FALSE");
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g_print ("gdk_gl_config_has_stencil_buffer (glconfig) = %s\n",
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gdk_gl_config_has_stencil_buffer (glconfig) ? "TRUE" : "FALSE");
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g_print ("gdk_gl_config_has_accum_buffer (glconfig) = %s\n",
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gdk_gl_config_has_accum_buffer (glconfig) ? "TRUE" : "FALSE");
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g_print ("\n");
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print_gl_config_attrib (glconfig, "GDK_GL_USE_GL",
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GDK_GL_USE_GL, TRUE);
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print_gl_config_attrib (glconfig, "GDK_GL_BUFFER_SIZE",
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GDK_GL_BUFFER_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_LEVEL",
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GDK_GL_LEVEL, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_RGBA",
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GDK_GL_RGBA, TRUE);
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print_gl_config_attrib (glconfig, "GDK_GL_DOUBLEBUFFER",
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GDK_GL_DOUBLEBUFFER, TRUE);
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print_gl_config_attrib (glconfig, "GDK_GL_STEREO",
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GDK_GL_STEREO, TRUE);
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print_gl_config_attrib (glconfig, "GDK_GL_AUX_BUFFERS",
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GDK_GL_AUX_BUFFERS, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_RED_SIZE",
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GDK_GL_RED_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_GREEN_SIZE",
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GDK_GL_GREEN_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_BLUE_SIZE",
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GDK_GL_BLUE_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_ALPHA_SIZE",
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GDK_GL_ALPHA_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_DEPTH_SIZE",
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GDK_GL_DEPTH_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_STENCIL_SIZE",
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GDK_GL_STENCIL_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_ACCUM_RED_SIZE",
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GDK_GL_ACCUM_RED_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_ACCUM_GREEN_SIZE",
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GDK_GL_ACCUM_GREEN_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_ACCUM_BLUE_SIZE",
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GDK_GL_ACCUM_BLUE_SIZE, FALSE);
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print_gl_config_attrib (glconfig, "GDK_GL_ACCUM_ALPHA_SIZE",
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GDK_GL_ACCUM_ALPHA_SIZE, FALSE);
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g_print ("\n");
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}
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static int
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begin_opengl_region_gdk_3d( void) {
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if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext)) {
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return 0;
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}
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return 1;
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}
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static void
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end_opengl_region_gdk_3d( void) {
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gdk_gl_drawable_gl_end (gldrawable);
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}
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static int
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initialise_gdk_3d( void) {
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/* this does nothing */
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return 1;
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}
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int
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init_opengl_gdk_3Demu( void) {
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GdkGLConfig *glconfig;
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/* create the off screen pixmap */
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target_pixmap = gdk_pixmap_new ( NULL, 256, 192, 24);
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if ( target_pixmap == NULL) {
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g_print ("*** Failed to create pixmap.\n");
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return 0;
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}
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glconfig = gdk_gl_config_new_by_mode (GDK_GL_MODE_RGBA |
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GDK_GL_MODE_ALPHA |
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GDK_GL_MODE_DEPTH |
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GDK_GL_MODE_SINGLE);
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if (glconfig == NULL)
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{
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g_print ("*** No appropriate OpenGL-capable visual found.\n");
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return 0;
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}
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/*
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* Set OpenGL-capability to the pixmap
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*/
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gldrawable = GDK_GL_DRAWABLE (gdk_pixmap_set_gl_capability (target_pixmap,
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glconfig,
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NULL));
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if ( gldrawable == NULL) {
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g_print ("Failed to create the GdkGLPixmap\n");
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return 0;
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}
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glcontext = gdk_gl_context_new (gldrawable,
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NULL,
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FALSE,
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GDK_GL_RGBA_TYPE);
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if (glcontext == NULL)
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{
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g_print ("Connot create the OpenGL rendering context\n");
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return 0;
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}
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begin_opengl_ogl_collector_platform = begin_opengl_region_gdk_3d;
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end_opengl_ogl_collector_platform = end_opengl_region_gdk_3d;
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initialise_ogl_collector_platform = initialise_gdk_3d;
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return 1;
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}
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#endif
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@ -0,0 +1,32 @@
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/* $Id: gdk_3Demu.h,v 1.1 2007-04-17 16:49:33 masscat Exp $
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*/
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/*
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Copyright (C) 2006-2007 Ben Jaques
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This file is part of DeSmuME
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DeSmuME 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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DeSmuME 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 DeSmuME; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifdef GTKGLEXT_AVAILABLE
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/*
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* The GDK 3D emulation.
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* This uses the OpenGL Collector plugin, using gdkGLext for the platform
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* specific helper functions.
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*/
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int
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init_opengl_gdk_3Demu( void);
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#endif
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