dolphin/Source/Core/VideoCommon/Src/LookUpTables.h

// Copyright (C) 2003 Dolphin Project.

// 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, version 2.0.

// 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 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/

#ifndef _LOOKUPTABLES_H
#define _LOOKUPTABLES_H

#include "Common.h"

inline u8 Convert3To8(u8 v)
{
	// Swizzle bits: 00000123 -> 12312312
	return (v << 5) | (v << 2) | (v >> 1);
}

inline u8 Convert4To8(u8 v)
{
	// Swizzle bits: 00001234 -> 12341234
	return (v << 4) | v;
}

inline u8 Convert5To8(u8 v)
{
	// Swizzle bits: 00012345 -> 12345123
	return (v << 3) | (v >> 2);
}

inline u8 Convert6To8(u8 v)
{
	// Swizzle bits: 00123456 -> 12345612
	return (v << 2) | (v >> 4);
}

#endif // _LOOKUPTABLES_H