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graphics/blit/blit-generic.cpp

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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;
+	}
+}
+
+template<template <bool RGBMOD, bool ALPHAMOD> class PixelFunc, bool rgbmod, bool alphamod>
+static inline void fillInnerLoop(BlendBlit::Args &args) {
+	byte *out;
+
+	const PixelFunc<rgbmod, alphamod> pixelFunc(args.color);
+
+	for (uint32 i = 0; i < args.height; i++) {
+		out = args.outo;
+
+		for (uint32 j = 0; j < args.width; j++) {
+			pixelFunc.fill(out);
+
+			out += 4;
+		}
+		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);
+}
+
+void BlendBlit::fillGeneric(Args &args, const TSpriteBlendMode &blendMode) {
+	fillT<BlendBlitImpl_Default>(args, blendMode);
+}
+
+} // End of namespace Graphics