/* GdkGLExt - OpenGL Extension to GDK
 * Copyright (C) 2002-2004  Naofumi Yasufuku
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA.
 */

#include "gdkglprivate.h"
#include "gdkgldrawable.h"
#include "gdkglconfig.h"
#include "gdkglcontext.h"

gboolean _gdk_gl_context_force_indirect = FALSE;

static void gdk_gl_context_class_init (GdkGLContextClass *klass);
static void gdk_gl_context_finalize   (GObject           *object);

static gpointer parent_class = NULL;

GType
gdk_gl_context_get_type (void)
{
  static GType type = 0;

  if (!type)
    {
      static const GTypeInfo type_info = {
        sizeof (GdkGLContextClass),
        (GBaseInitFunc) NULL,
        (GBaseFinalizeFunc) NULL,
        (GClassInitFunc) gdk_gl_context_class_init,
        (GClassFinalizeFunc) NULL,
        NULL,                   /* class_data */
        sizeof (GdkGLContext),
        0,                      /* n_preallocs */
        (GInstanceInitFunc) NULL
      };

      type = g_type_register_static (G_TYPE_OBJECT,
                                     "GdkGLContext",
                                     &type_info, 0);
    }

  return type;
}

static void
gdk_gl_context_class_init (GdkGLContextClass *klass)
{
  GObjectClass *object_class = G_OBJECT_CLASS (klass);

  GDK_GL_NOTE_FUNC_PRIVATE ();

  parent_class = g_type_class_peek_parent (klass);

  object_class->finalize = gdk_gl_context_finalize;
}

static void
gdk_gl_context_finalize (GObject *object)
{
  GDK_GL_NOTE_FUNC_PRIVATE ();

  G_OBJECT_CLASS (parent_class)->finalize (object);
}

/**
 * gdk_gl_context_new:
 * @gldrawable: a #GdkGLDrawable.
 * @share_list: the #GdkGLContext with which to share display lists and texture
 *              objects. NULL indicates that no sharing is to take place.
 * @direct: whether rendering is to be done with a direct connection to
 *          the graphics system.
 * @render_type: GDK_GL_RGBA_TYPE or GDK_GL_COLOR_INDEX_TYPE (currently not
 *               used).
 *
 * Creates a new OpenGL rendering context.
 *
 * Return value: the new #GdkGLContext.
 **/
GdkGLContext *
gdk_gl_context_new (GdkGLDrawable *gldrawable,
                    GdkGLContext  *share_list,
                    gboolean       direct,
                    int            render_type)
{
  g_return_val_if_fail (GDK_IS_GL_DRAWABLE (gldrawable), NULL);

  return GDK_GL_DRAWABLE_GET_CLASS (gldrawable)->create_new_context (gldrawable,
                                                                     share_list,
                                                                     direct,
                                                                     render_type);
}

/**
 * gdk_gl_context_destroy:
 * @glcontext: a #GdkGLContext.
 *
 * Destroys the OpenGL resources associated with @glcontext and
 * decrements @glcontext's reference count.
 **/
void
gdk_gl_context_destroy (GdkGLContext *glcontext)
{
  g_return_if_fail (GDK_IS_GL_CONTEXT (glcontext));

  _gdk_gl_context_destroy (glcontext);
  g_object_unref (G_OBJECT (glcontext));
}