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* Copyright (c) 2006 Boudewijn Rempt <boud@valdyas.org>
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* This program is free software const; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation const; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY const; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program const; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#ifndef RGBCOMPOSITEOPBUMPMAP_H
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#define RGBCOMPOSITEOPBUMPMAP_H
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#include "KoColorSpaceMaths.h"
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#include <KoCompositeOpAlphaBase.h>
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template<class _CSTraits>
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class RgbCompositeOpBumpmap : public KoCompositeOpAlphaBase<_CSTraits, RgbCompositeOpBumpmap<_CSTraits>, true >
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typedef typename _CSTraits::channels_type channels_type;
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typedef typename KoColorSpaceMathsTraits<typename _CSTraits::channels_type>::compositetype compositetype;
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RgbCompositeOpBumpmap(KoColorSpace * cs)
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: KoCompositeOpAlphaBase<_CSTraits, RgbCompositeOpBumpmap<_CSTraits>, true >(cs, COMPOSITE_BUMPMAP, i18n("Bumpmap"), KoCompositeOp::categoryMisc()) {
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inline static channels_type selectAlpha(channels_type srcAlpha, channels_type dstAlpha) {
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return qMin(srcAlpha, dstAlpha);
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inline static void composeColorChannels(channels_type srcBlend,
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const channels_type* src,
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const QBitArray & channelFlags) {
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// And I'm not sure whether this is correct, either.
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intensity = ((qreal)306.0 * src[_CSTraits::red_pos] +
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(qreal)601.0 * src[_CSTraits::green_pos] +
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(qreal)117.0 * src[_CSTraits::blue_pos]) / 1024.0;
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for (uint i = 0; i < _CSTraits::channels_nb; i++) {
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if ((int)i != _CSTraits::alpha_pos && (allChannelFlags || channelFlags.testBit(i))) {
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channels_type srcChannel = (channels_type)(((qreal)
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intensity * dst[i]) / NATIVE_OPACITY_OPAQUE + 0.5);
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channels_type dstChannel = dst[i];
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dst[i] = KoColorSpaceMaths<channels_type>::blend(srcChannel, dstChannel, srcBlend);