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authorOch Noe <och_noe@forksworld.de>2018-11-26 20:22:48 +0100
committerOch Noe <och_noe@forksworld.de>2018-11-26 20:22:48 +0100
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/*
Copyright (C) 2015 Aaron Suen <warr1024@gmail.com>

This program 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 program 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 program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "guiscalingfilter.h"
#include "imagefilters.h"
#include "settings.h"
#include "util/numeric.h"
#include <stdio.h>

/* Maintain a static cache to store the images that correspond to textures
 * in a format that's manipulable by code.  Some platforms exhibit issues
 * converting textures back into images repeatedly, and some don't even
 * allow it at all.
 */
std::map<io::path, video::IImage *> g_imgCache;

/* Maintain a static cache of all pre-scaled textures.  These need to be
 * cleared as well when the cached images.
 */
std::map<io::path, video::ITexture *> g_txrCache;

/* Manually insert an image into the cache, useful to avoid texture-to-image
 * conversion whenever we can intercept it.
 */
void guiScalingCache(io::path key, video::IVideoDriver *driver, video::IImage *value)
{
	if (!g_settings->getBool("gui_scaling_filter"))
		return;
	video::IImage *copied = driver->createImage(value->getColorFormat(),
			value->getDimension());
	value->copyTo(copied);
	g_imgCache[key] = copied;
}