115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
/*
|
|
* Clutter.
|
|
*
|
|
* An OpenGL based 'interactive canvas' library.
|
|
*
|
|
* Authored By Matthew Allum <mallum@openedhand.com>
|
|
*
|
|
* Copyright (C) 2006 OpenedHand
|
|
*
|
|
* 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, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/**
|
|
* SECTION:clutter-feature
|
|
* @short_description: Query GL features at runtime
|
|
*
|
|
* Functions to query available GL features ay runtime
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "clutter-feature.h"
|
|
#include "clutter-main.h"
|
|
#include "clutter-private.h"
|
|
#include "clutter-debug.h"
|
|
|
|
#include "cogl.h"
|
|
|
|
typedef struct ClutterFeatures
|
|
{
|
|
ClutterFeatureFlags flags;
|
|
guint features_set : 1;
|
|
} ClutterFeatures;
|
|
|
|
static ClutterFeatures* __features = NULL;
|
|
|
|
void
|
|
_clutter_feature_init (void)
|
|
{
|
|
ClutterMainContext *context;
|
|
|
|
CLUTTER_NOTE (MISC, "checking features");
|
|
|
|
if (!__features)
|
|
{
|
|
CLUTTER_NOTE (MISC, "allocating features data");
|
|
__features = g_new0 (ClutterFeatures, 1);
|
|
__features->features_set = FALSE; /* don't rely on zero-ing */
|
|
}
|
|
|
|
if (__features->features_set)
|
|
return;
|
|
|
|
context = clutter_context_get_default ();
|
|
|
|
__features->flags = cogl_get_features()
|
|
|_clutter_backend_get_features (context->backend);
|
|
|
|
__features->features_set = TRUE;
|
|
|
|
CLUTTER_NOTE (MISC, "features checked");
|
|
}
|
|
|
|
/**
|
|
* clutter_feature_available:
|
|
* @feature: a #ClutterFeatureFlags
|
|
*
|
|
* Checks whether @feature is available. @feature can be a logical
|
|
* OR of #ClutterFeatureFlags.
|
|
*
|
|
* Return value: %TRUE if a feature is available
|
|
*
|
|
* Since: 0.1.1
|
|
*/
|
|
gboolean
|
|
clutter_feature_available (ClutterFeatureFlags feature)
|
|
{
|
|
if (G_UNLIKELY (!__features))
|
|
return FALSE;
|
|
|
|
return (__features->flags & feature);
|
|
}
|
|
|
|
/**
|
|
* clutter_feature_get_all:
|
|
*
|
|
* Returns all the supported features.
|
|
*
|
|
* Return value: a logical OR of all the supported features.
|
|
*
|
|
* Since: 0.1.1
|
|
*/
|
|
ClutterFeatureFlags
|
|
clutter_feature_get_all (void)
|
|
{
|
|
return __features->flags;
|
|
}
|
|
|