cpp/openttd-patchpack/source Files · src/blitter/32bpp_ssse3.hpp

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r24755:9b2ef076754d 1.7 KiB text/x-c++hdr Show Annotation Show as Raw Download as Raw

Michael Lutz

Codechange: Don't use cpp_offsetof in the save/load code.

Many of the member variables that are used in save/load are inside types
that are not standard layout types. Using pointer arithmetics to determine
addresses of members inside types that are not standard layout is generally
undefined behaviour. If we'd use C++17, it is conditionally supported, which means
each compiler may or may not support it. And even then using it for individual
array elements is syntactically not supported the the standard offsetof function.

Unfortunately, the trickery employed for saving linkgraph settings causes quite some
clutter in the settings ini files.

/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file 32bpp_ssse3.hpp SSSE3 32 bpp blitter. */

#ifndef BLITTER_32BPP_SSSE3_HPP
#define BLITTER_32BPP_SSSE3_HPP

#ifdef WITH_SSE

#ifndef SSE_VERSION
#define SSE_VERSION 3
#endif

#ifndef FULL_ANIMATION
#define FULL_ANIMATION 0
#endif

#include "32bpp_sse2.hpp"

/** The SSSE3 32 bpp blitter (without palette animation). */
class Blitter_32bppSSSE3 : public Blitter_32bppSSE2 {
public:
	void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override;
	template <BlitterMode mode, Blitter_32bppSSE_Base::ReadMode read_mode, Blitter_32bppSSE_Base::BlockType bt_last, bool translucent>
	void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
	const char *GetName() override { return "32bpp-ssse3"; }
};

/** Factory for the SSSE3 32 bpp blitter (without palette animation). */
class FBlitter_32bppSSSE3: public BlitterFactory {
public:
	FBlitter_32bppSSSE3() : BlitterFactory("32bpp-ssse3", "32bpp SSSE3 Blitter (no palette animation)", HasCPUIDFlag(1, 2, 9)) {}
	Blitter *CreateInstance() override { return new Blitter_32bppSSSE3(); }
};

#endif /* WITH_SSE */
#endif /* BLITTER_32BPP_SSSE3_HPP */