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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "graphics/blit/blit-alpha.h"
#include "graphics/pixelformat.h"
namespace Graphics {
class BlendBlitImpl_Default : public BlendBlitImpl_Base {
friend class BlendBlit;
public:
template<template <bool RGBMOD, bool ALPHAMOD> class PixelFunc, bool doscale, bool rgbmod, bool alphamod>
static inline void blitInnerLoop(BlendBlit::Args &args) {
const byte *in;
byte *out;
const PixelFunc<rgbmod, alphamod> pixelFunc(args.color);
int scaleXCtr, scaleYCtr = args.scaleYoff;
const byte *inBase;
for (uint32 i = 0; i < args.height; i++) {
if (doscale) {
inBase = args.ino + scaleYCtr / BlendBlit::SCALE_THRESHOLD * args.inoStep;
scaleXCtr = args.scaleXoff;
} else {
in = args.ino;
}
out = args.outo;
for (uint32 j = 0; j < args.width; j++) {
if (doscale) {
in = inBase + scaleXCtr / BlendBlit::SCALE_THRESHOLD * args.inStep;
}
pixelFunc.normal(in, out);
if (doscale)
scaleXCtr += args.scaleX;
else
in += args.inStep;
out += 4;
}
if (doscale)
scaleYCtr += args.scaleY;
else
args.ino += args.inoStep;
args.outo += args.dstPitch;
}
}
}; // end of class BlendBlitImpl_Default
void BlendBlit::blitGeneric(Args &args, const TSpriteBlendMode &blendMode, const AlphaType &alphaType) {
blitT<BlendBlitImpl_Default>(args, blendMode, alphaType);
}
} // End of namespace Graphics
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