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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "graphics/blit/blit-alpha.h"
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#include "graphics/pixelformat.h"
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namespace Graphics {
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class BlendBlitImpl_Default : public BlendBlitImpl_Base {
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friend class BlendBlit;
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public:
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template<template <bool RGBMOD, bool ALPHAMOD> class PixelFunc, bool doscale, bool rgbmod, bool alphamod>
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static inline void blitInnerLoop(BlendBlit::Args &args) {
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const byte *in;
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byte *out;
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const PixelFunc<rgbmod, alphamod> pixelFunc(args.color);
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int scaleXCtr, scaleYCtr = args.scaleYoff;
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const byte *inBase;
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for (uint32 i = 0; i < args.height; i++) {
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if (doscale) {
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inBase = args.ino + scaleYCtr / BlendBlit::SCALE_THRESHOLD * args.inoStep;
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scaleXCtr = args.scaleXoff;
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} else {
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in = args.ino;
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}
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out = args.outo;
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for (uint32 j = 0; j < args.width; j++) {
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if (doscale) {
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in = inBase + scaleXCtr / BlendBlit::SCALE_THRESHOLD * args.inStep;
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}
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pixelFunc.normal(in, out);
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if (doscale)
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scaleXCtr += args.scaleX;
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else
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in += args.inStep;
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out += 4;
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}
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if (doscale)
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scaleYCtr += args.scaleY;
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else
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args.ino += args.inoStep;
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args.outo += args.dstPitch;
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}
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}
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}; // end of class BlendBlitImpl_Default
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void BlendBlit::blitGeneric(Args &args, const TSpriteBlendMode &blendMode, const AlphaType &alphaType) {
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blitT<BlendBlitImpl_Default>(args, blendMode, alphaType);
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}
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} // End of namespace Graphics
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