mutter/cogl/winsys/cogl-winsys.c

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
*
* 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 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, see
* <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-context-private.h"
#include <gmodule.h>
GQuark
_cogl_winsys_error_quark (void)
{
return g_quark_from_static_string ("cogl-winsys-error-quark");
}
/* FIXME: we should distinguish renderer and context features */
gboolean
_cogl_winsys_has_feature (CoglWinsysFeature feature)
{
_COGL_GET_CONTEXT (ctx, FALSE);
return COGL_FLAGS_GET (ctx->winsys_features, feature);
}
/* XXX: we would call this _cogl_winsys_get_proc_address but that
* currently collides with the per winsys implementation names we use.
* */
CoglFuncPtr
_cogl_get_proc_address (const CoglWinsysVtable *winsys,
const char *name)
{
void *address = winsys->get_proc_address (name);
static GModule *module = NULL;
if (address)
return address;
/* this should find the right function if the program is linked against a
* library providing it */
if (G_UNLIKELY (module == NULL))
module = g_module_open (NULL, 0);
if (module)
{
gpointer symbol;
if (g_module_symbol (module, name, &symbol))
return symbol;
}
return NULL;
}