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909c4c9ffc
The original version used unsigned long as storage type, which wasted memory on 64-bit machines.
46 lines
1.0 KiB
C++
46 lines
1.0 KiB
C++
/*
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* \brief Template specializations for the RGB888 pixel format
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* \author Norman Feske
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* \date 2014-08-14
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*/
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/*
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* Copyright (C) 2014 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _INCLUDE__OS__PIXEL_RGB888_H_
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#define _INCLUDE__OS__PIXEL_RGB888_H_
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#include <os/pixel_rgba.h>
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namespace Genode {
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typedef Pixel_rgba<uint32_t, Surface_base::RGB888,
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0xff0000, 16, 0xff00, 8, 0xff, 0, 0, 0>
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Pixel_rgb888;
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template <>
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inline Pixel_rgb888 Pixel_rgb888::blend(Pixel_rgb888 src, int alpha)
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{
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Pixel_rgb888 res;
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res.pixel = (alpha * ((src.pixel & 0xff00) >> 8) & 0xff00)
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| (((alpha * (src.pixel & 0xff00ff)) >> 8) & 0xff00ff);
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return res;
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}
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template <>
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inline Pixel_rgb888 Pixel_rgb888::mix(Pixel_rgb888 p1, Pixel_rgb888 p2, int alpha)
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{
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Pixel_rgb888 res;
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res.pixel = blend(p1, 255 - alpha).pixel + blend(p2, alpha).pixel;
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return res;
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}
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}
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#endif /* _INCLUDE__OS__PIXEL_RGB888_H_ */
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