view src/video/SDL_blit_N.c @ 968:4675910b0b7b

Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) From: Hannu Savolainen Subject: Re: SDL uses obsolete OSS features I did some work on getting OSS to work better with SDL. There have been some problems with select which should be fixed now. I'm having some problems in understanding what is the purpose of the DSP_WaitAudio() routine. I added a return to the very beginning of this routine and commendted out the define for USE_BLOCKING_WRITES. At least lbreakout2 seems to work as well as earlier. The latencies are the same. An ordinary blocking write does exactly the same thing than DSP_WaitAudio does. So I would recommend using the USE_BLOCKING_WRITES approach and removing everything from the DSP_WaitAudio routine. Also enabling USE_BLOCKING_WRITES makes it possible to simplify DSP_PlayAudio() because you don't need to handle the partial writes (the do-while loop). Attached is a patch against SDL-1.2.7. After these changes SDL will use OSS as it's designed to be used (make it as simple as possible). This code should work with all OSS implementations because it uses only the very fundamental features that have been there since the jurassic times.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 12 Nov 2004 21:39:04 +0000
parents b8d311d90021
children ffaaf7ecf685
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

#include <stdio.h>

#include "SDL_types.h"
#include "SDL_video.h"
#include "SDL_blit.h"
#include "SDL_byteorder.h"
#include "SDL_cpuinfo.h"

/* Functions to blit from N-bit surfaces to other surfaces */

#ifdef USE_ASMBLIT

/* Heheheh, we coerce Hermes into using SDL blit information */
#define X86_ASSEMBLER
#define HermesConverterInterface	SDL_BlitInfo
#define HermesClearInterface		void
#define STACKCALL

#include "HeadMMX.h"
#include "HeadX86.h"

#else

/* This is now endian dependent */
#if ( SDL_BYTEORDER == SDL_LIL_ENDIAN )
#define HI	1
#define LO	0
#else /* ( SDL_BYTEORDER == SDL_BIG_ENDIAN ) */
#define HI	0
#define LO	1
#endif

/* Special optimized blit for RGB 8-8-8 --> RGB 3-3-2 */
#define RGB888_RGB332(dst, src) { \
	dst = (((src)&0x00E00000)>>16)| \
	      (((src)&0x0000E000)>>11)| \
	      (((src)&0x000000C0)>>6); \
}
static void Blit_RGB888_index8(SDL_BlitInfo *info)
{
#ifndef USE_DUFFS_LOOP
	int c;
#endif
	int width, height;
	Uint32 *src;
	const Uint8 *map;
	Uint8 *dst;
	int srcskip, dstskip;

	/* Set up some basic variables */
	width = info->d_width;
	height = info->d_height;
	src = (Uint32 *)info->s_pixels;
	srcskip = info->s_skip/4;
	dst = info->d_pixels;
	dstskip = info->d_skip;
	map = info->table;

	if ( map == NULL ) {
		while ( height-- ) {
#ifdef USE_DUFFS_LOOP
			DUFFS_LOOP(
				RGB888_RGB332(*dst++, *src);
			, width);
#else
			for ( c=width/4; c; --c ) {
				/* Pack RGB into 8bit pixel */
				++src;
				RGB888_RGB332(*dst++, *src);
				++src;
				RGB888_RGB332(*dst++, *src);
				++src;
				RGB888_RGB332(*dst++, *src);
				++src;
			}
			switch ( width & 3 ) {
				case 3:
					RGB888_RGB332(*dst++, *src);
					++src;
				case 2:
					RGB888_RGB332(*dst++, *src);
					++src;
				case 1:
					RGB888_RGB332(*dst++, *src);
					++src;
			}
#endif /* USE_DUFFS_LOOP */
			src += srcskip;
			dst += dstskip;
		}
	} else {
		int pixel;

		while ( height-- ) {
#ifdef USE_DUFFS_LOOP
			DUFFS_LOOP(
				RGB888_RGB332(pixel, *src);
				*dst++ = map[pixel];
				++src;
			, width);
#else
			for ( c=width/4; c; --c ) {
				/* Pack RGB into 8bit pixel */
				RGB888_RGB332(pixel, *src);
				*dst++ = map[pixel];
				++src;
				RGB888_RGB332(pixel, *src);
				*dst++ = map[pixel];
				++src;
				RGB888_RGB332(pixel, *src);
				*dst++ = map[pixel];
				++src;
				RGB888_RGB332(pixel, *src);
				*dst++ = map[pixel];
				++src;
			}
			switch ( width & 3 ) {
				case 3:
					RGB888_RGB332(pixel, *src);
					*dst++ = map[pixel];
					++src;
				case 2:
					RGB888_RGB332(pixel, *src);
					*dst++ = map[pixel];
					++src;
				case 1:
					RGB888_RGB332(pixel, *src);
					*dst++ = map[pixel];
					++src;
			}
#endif /* USE_DUFFS_LOOP */
			src += srcskip;
			dst += dstskip;
		}
	}
}
/* Special optimized blit for RGB 8-8-8 --> RGB 5-5-5 */
#define RGB888_RGB555(dst, src) { \
	*(Uint16 *)(dst) = (((*src)&0x00F80000)>>9)| \
	                   (((*src)&0x0000F800)>>6)| \
	                   (((*src)&0x000000F8)>>3); \
}
#define RGB888_RGB555_TWO(dst, src) { \
	*(Uint32 *)(dst) = (((((src[HI])&0x00F80000)>>9)| \
	                     (((src[HI])&0x0000F800)>>6)| \
	                     (((src[HI])&0x000000F8)>>3))<<16)| \
	                     (((src[LO])&0x00F80000)>>9)| \
	                     (((src[LO])&0x0000F800)>>6)| \
	                     (((src[LO])&0x000000F8)>>3); \
}
static void Blit_RGB888_RGB555(SDL_BlitInfo *info)
{
#ifndef USE_DUFFS_LOOP
	int c;
#endif
	int width, height;
	Uint32 *src;
	Uint16 *dst;
	int srcskip, dstskip;

	/* Set up some basic variables */
	width = info->d_width;
	height = info->d_height;
	src = (Uint32 *)info->s_pixels;
	srcskip = info->s_skip/4;
	dst = (Uint16 *)info->d_pixels;
	dstskip = info->d_skip/2;

#ifdef USE_DUFFS_LOOP
	while ( height-- ) {
		DUFFS_LOOP(
			RGB888_RGB555(dst, src);
			++src;
			++dst;
		, width);
		src += srcskip;
		dst += dstskip;
	}
#else
	/* Memory align at 4-byte boundary, if necessary */
	if ( (long)dst & 0x03 ) {
		/* Don't do anything if width is 0 */
		if ( width == 0 ) {
			return;
		}
		--width;

		while ( height-- ) {
			/* Perform copy alignment */
			RGB888_RGB555(dst, src);
			++src;
			++dst;

			/* Copy in 4 pixel chunks */
			for ( c=width/4; c; --c ) {
				RGB888_RGB555_TWO(dst, src);
				src += 2;
				dst += 2;
				RGB888_RGB555_TWO(dst, src);
				src += 2;
				dst += 2;
			}
			/* Get any leftovers */
			switch (width & 3) {
				case 3:
					RGB888_RGB555(dst, src);
					++src;
					++dst;
				case 2:
					RGB888_RGB555_TWO(dst, src);
					src += 2;
					dst += 2;
					break;
				case 1:
					RGB888_RGB555(dst, src);
					++src;
					++dst;
					break;
			}
			src += srcskip;
			dst += dstskip;
		}
	} else { 
		while ( height-- ) {
			/* Copy in 4 pixel chunks */
			for ( c=width/4; c; --c ) {
				RGB888_RGB555_TWO(dst, src);
				src += 2;
				dst += 2;
				RGB888_RGB555_TWO(dst, src);
				src += 2;
				dst += 2;
			}
			/* Get any leftovers */
			switch (width & 3) {
				case 3:
					RGB888_RGB555(dst, src);
					++src;
					++dst;
				case 2:
					RGB888_RGB555_TWO(dst, src);
					src += 2;
					dst += 2;
					break;
				case 1:
					RGB888_RGB555(dst, src);
					++src;
					++dst;
					break;
			}
			src += srcskip;
			dst += dstskip;
		}
	}
#endif /* USE_DUFFS_LOOP */
}
/* Special optimized blit for RGB 8-8-8 --> RGB 5-6-5 */
#define RGB888_RGB565(dst, src) { \
	*(Uint16 *)(dst) = (((*src)&0x00F80000)>>8)| \
	                   (((*src)&0x0000FC00)>>5)| \
	                   (((*src)&0x000000F8)>>3); \
}
#define RGB888_RGB565_TWO(dst, src) { \
	*(Uint32 *)(dst) = (((((src[HI])&0x00F80000)>>8)| \
	                     (((src[HI])&0x0000FC00)>>5)| \
	                     (((src[HI])&0x000000F8)>>3))<<16)| \
	                     (((src[LO])&0x00F80000)>>8)| \
	                     (((src[LO])&0x0000FC00)>>5)| \
	                     (((src[LO])&0x000000F8)>>3); \
}
static void Blit_RGB888_RGB565(SDL_BlitInfo *info)
{
#ifndef USE_DUFFS_LOOP
	int c;
#endif
	int width, height;
	Uint32 *src;
	Uint16 *dst;
	int srcskip, dstskip;

	/* Set up some basic variables */
	width = info->d_width;
	height = info->d_height;
	src = (Uint32 *)info->s_pixels;
	srcskip = info->s_skip/4;
	dst = (Uint16 *)info->d_pixels;
	dstskip = info->d_skip/2;

#ifdef USE_DUFFS_LOOP
	while ( height-- ) {
		DUFFS_LOOP(
			RGB888_RGB565(dst, src);
			++src;
			++dst;
		, width);
		src += srcskip;
		dst += dstskip;
	}
#else
	/* Memory align at 4-byte boundary, if necessary */
	if ( (long)dst & 0x03 ) {
		/* Don't do anything if width is 0 */
		if ( width == 0 ) {
			return;
		}
		--width;

		while ( height-- ) {
			/* Perform copy alignment */
			RGB888_RGB565(dst, src);
			++src;
			++dst;

			/* Copy in 4 pixel chunks */
			for ( c=width/4; c; --c ) {
				RGB888_RGB565_TWO(dst, src);
				src += 2;
				dst += 2;
				RGB888_RGB565_TWO(dst, src);
				src += 2;
				dst += 2;
			}
			/* Get any leftovers */
			switch (width & 3) {
				case 3:
					RGB888_RGB565(dst, src);
					++src;
					++dst;
				case 2:
					RGB888_RGB565_TWO(dst, src);
					src += 2;
					dst += 2;
					break;
				case 1:
					RGB888_RGB565(dst, src);
					++src;
					++dst;
					break;
			}
			src += srcskip;
			dst += dstskip;
		}
	} else { 
		while ( height-- ) {
			/* Copy in 4 pixel chunks */
			for ( c=width/4; c; --c ) {
				RGB888_RGB565_TWO(dst, src);
				src += 2;
				dst += 2;
				RGB888_RGB565_TWO(dst, src);
				src += 2;
				dst += 2;
			}
			/* Get any leftovers */
			switch (width & 3) {
				case 3:
					RGB888_RGB565(dst, src);
					++src;
					++dst;
				case 2:
					RGB888_RGB565_TWO(dst, src);
					src += 2;
					dst += 2;
					break;
				case 1:
					RGB888_RGB565(dst, src);
					++src;
					++dst;
					break;
			}
			src += srcskip;
			dst += dstskip;
		}
	}
#endif /* USE_DUFFS_LOOP */
}

#endif /* USE_ASMBLIT */


/* Special optimized blit for RGB 5-6-5 --> 32-bit RGB surfaces */
#if ( SDL_BYTEORDER == SDL_LIL_ENDIAN )
#define RGB565_32(dst, src, map) (map[src[0]*2] + map[src[1]*2+1])
#else /* ( SDL_BYTEORDER == SDL_BIG_ENDIAN ) */
#define RGB565_32(dst, src, map) (map[src[1]*2] + map[src[0]*2+1])
#endif
static void Blit_RGB565_32(SDL_BlitInfo *info, const Uint32 *map)
{
#ifndef USE_DUFFS_LOOP
	int c;
#endif
	int width, height;
	Uint8 *src;
	Uint32 *dst;
	int srcskip, dstskip;

	/* Set up some basic variables */
	width = info->d_width;
	height = info->d_height;
	src = (Uint8 *)info->s_pixels;
	srcskip = info->s_skip;
	dst = (Uint32 *)info->d_pixels;
	dstskip = info->d_skip/4;

#ifdef USE_DUFFS_LOOP
	while ( height-- ) {
		DUFFS_LOOP(
		{
			*dst++ = RGB565_32(dst, src, map);
			src += 2;
		},
		width);
		src += srcskip;
		dst += dstskip;
	}
#else
	while ( height-- ) {
		/* Copy in 4 pixel chunks */
		for ( c=width/4; c; --c ) {
			*dst++ = RGB565_32(dst, src, map);
			src += 2;
			*dst++ = RGB565_32(dst, src, map);
			src += 2;
			*dst++ = RGB565_32(dst, src, map);
			src += 2;
			*dst++ = RGB565_32(dst, src, map);
			src += 2;
		}
		/* Get any leftovers */
		switch (width & 3) {
			case 3:
				*dst++ = RGB565_32(dst, src, map);
				src += 2;
			case 2:
				*dst++ = RGB565_32(dst, src, map);
				src += 2;
			case 1:
				*dst++ = RGB565_32(dst, src, map);
				src += 2;
				break;
		}
		src += srcskip;
		dst += dstskip;
	}
#endif /* USE_DUFFS_LOOP */
}

/* Special optimized blit for RGB 5-6-5 --> ARGB 8-8-8-8 */
static const Uint32 RGB565_ARGB8888_LUT[512] = {
		0x00000000, 0xff000000, 0x00000008, 0xff002000,
		0x00000010, 0xff004000, 0x00000018, 0xff006100,
		0x00000020, 0xff008100, 0x00000029, 0xff00a100,
		0x00000031, 0xff00c200, 0x00000039, 0xff00e200,
		0x00000041, 0xff080000, 0x0000004a, 0xff082000,
		0x00000052, 0xff084000, 0x0000005a, 0xff086100,
		0x00000062, 0xff088100, 0x0000006a, 0xff08a100,
		0x00000073, 0xff08c200, 0x0000007b, 0xff08e200,
		0x00000083, 0xff100000, 0x0000008b, 0xff102000,
		0x00000094, 0xff104000, 0x0000009c, 0xff106100,
		0x000000a4, 0xff108100, 0x000000ac, 0xff10a100,
		0x000000b4, 0xff10c200, 0x000000bd, 0xff10e200,
		0x000000c5, 0xff180000, 0x000000cd, 0xff182000,
		0x000000d5, 0xff184000, 0x000000de, 0xff186100,
		0x000000e6, 0xff188100, 0x000000ee, 0xff18a100,
		0x000000f6, 0xff18c200, 0x000000ff, 0xff18e200,
		0x00000400, 0xff200000, 0x00000408, 0xff202000,
		0x00000410, 0xff204000, 0x00000418, 0xff206100,
		0x00000420, 0xff208100, 0x00000429, 0xff20a100,
		0x00000431, 0xff20c200, 0x00000439, 0xff20e200,
		0x00000441, 0xff290000, 0x0000044a, 0xff292000,
		0x00000452, 0xff294000, 0x0000045a, 0xff296100,
		0x00000462, 0xff298100, 0x0000046a, 0xff29a100,
		0x00000473, 0xff29c200, 0x0000047b, 0xff29e200,
		0x00000483, 0xff310000, 0x0000048b, 0xff312000,
		0x00000494, 0xff314000, 0x0000049c, 0xff316100,
		0x000004a4, 0xff318100, 0x000004ac, 0xff31a100,
		0x000004b4, 0xff31c200, 0x000004bd, 0xff31e200,
		0x000004c5, 0xff390000, 0x000004cd, 0xff392000,
		0x000004d5, 0xff394000, 0x000004de, 0xff396100,
		0x000004e6, 0xff398100, 0x000004ee, 0xff39a100,
		0x000004f6, 0xff39c200, 0x000004ff, 0xff39e200,
		0x00000800, 0xff410000, 0x00000808, 0xff412000,
		0x00000810, 0xff414000, 0x00000818, 0xff416100,
		0x00000820, 0xff418100, 0x00000829, 0xff41a100,
		0x00000831, 0xff41c200, 0x00000839, 0xff41e200,
		0x00000841, 0xff4a0000, 0x0000084a, 0xff4a2000,
		0x00000852, 0xff4a4000, 0x0000085a, 0xff4a6100,
		0x00000862, 0xff4a8100, 0x0000086a, 0xff4aa100,
		0x00000873, 0xff4ac200, 0x0000087b, 0xff4ae200,
		0x00000883, 0xff520000, 0x0000088b, 0xff522000,
		0x00000894, 0xff524000, 0x0000089c, 0xff526100,
		0x000008a4, 0xff528100, 0x000008ac, 0xff52a100,
		0x000008b4, 0xff52c200, 0x000008bd, 0xff52e200,
		0x000008c5, 0xff5a0000, 0x000008cd, 0xff5a2000,
		0x000008d5, 0xff5a4000, 0x000008de, 0xff5a6100,
		0x000008e6, 0xff5a8100, 0x000008ee, 0xff5aa100,
		0x000008f6, 0xff5ac200, 0x000008ff, 0xff5ae200,
		0x00000c00, 0xff620000, 0x00000c08, 0xff622000,
		0x00000c10, 0xff624000, 0x00000c18, 0xff626100,
		0x00000c20, 0xff628100, 0x00000c29, 0xff62a100,
		0x00000c31, 0xff62c200, 0x00000c39, 0xff62e200,
		0x00000c41, 0xff6a0000, 0x00000c4a, 0xff6a2000,
		0x00000c52, 0xff6a4000, 0x00000c5a, 0xff6a6100,
		0x00000c62, 0xff6a8100, 0x00000c6a, 0xff6aa100,
		0x00000c73, 0xff6ac200, 0x00000c7b, 0xff6ae200,
		0x00000c83, 0xff730000, 0x00000c8b, 0xff732000,
		0x00000c94, 0xff734000, 0x00000c9c, 0xff736100,
		0x00000ca4, 0xff738100, 0x00000cac, 0xff73a100,
		0x00000cb4, 0xff73c200, 0x00000cbd, 0xff73e200,
		0x00000cc5, 0xff7b0000, 0x00000ccd, 0xff7b2000,
		0x00000cd5, 0xff7b4000, 0x00000cde, 0xff7b6100,
		0x00000ce6, 0xff7b8100, 0x00000cee, 0xff7ba100,
		0x00000cf6, 0xff7bc200, 0x00000cff, 0xff7be200,
		0x00001000, 0xff830000, 0x00001008, 0xff832000,
		0x00001010, 0xff834000, 0x00001018, 0xff836100,
		0x00001020, 0xff838100, 0x00001029, 0xff83a100,
		0x00001031, 0xff83c200, 0x00001039, 0xff83e200,
		0x00001041, 0xff8b0000, 0x0000104a, 0xff8b2000,
		0x00001052, 0xff8b4000, 0x0000105a, 0xff8b6100,
		0x00001062, 0xff8b8100, 0x0000106a, 0xff8ba100,
		0x00001073, 0xff8bc200, 0x0000107b, 0xff8be200,
		0x00001083, 0xff940000, 0x0000108b, 0xff942000,
		0x00001094, 0xff944000, 0x0000109c, 0xff946100,
		0x000010a4, 0xff948100, 0x000010ac, 0xff94a100,
		0x000010b4, 0xff94c200, 0x000010bd, 0xff94e200,
		0x000010c5, 0xff9c0000, 0x000010cd, 0xff9c2000,
		0x000010d5, 0xff9c4000, 0x000010de, 0xff9c6100,
		0x000010e6, 0xff9c8100, 0x000010ee, 0xff9ca100,
		0x000010f6, 0xff9cc200, 0x000010ff, 0xff9ce200,
		0x00001400, 0xffa40000, 0x00001408, 0xffa42000,
		0x00001410, 0xffa44000, 0x00001418, 0xffa46100,
		0x00001420, 0xffa48100, 0x00001429, 0xffa4a100,
		0x00001431, 0xffa4c200, 0x00001439, 0xffa4e200,
		0x00001441, 0xffac0000, 0x0000144a, 0xffac2000,
		0x00001452, 0xffac4000, 0x0000145a, 0xffac6100,
		0x00001462, 0xffac8100, 0x0000146a, 0xffaca100,
		0x00001473, 0xffacc200, 0x0000147b, 0xfface200,
		0x00001483, 0xffb40000, 0x0000148b, 0xffb42000,
		0x00001494, 0xffb44000, 0x0000149c, 0xffb46100,
		0x000014a4, 0xffb48100, 0x000014ac, 0xffb4a100,
		0x000014b4, 0xffb4c200, 0x000014bd, 0xffb4e200,
		0x000014c5, 0xffbd0000, 0x000014cd, 0xffbd2000,
		0x000014d5, 0xffbd4000, 0x000014de, 0xffbd6100,
		0x000014e6, 0xffbd8100, 0x000014ee, 0xffbda100,
		0x000014f6, 0xffbdc200, 0x000014ff, 0xffbde200,
		0x00001800, 0xffc50000, 0x00001808, 0xffc52000,
		0x00001810, 0xffc54000, 0x00001818, 0xffc56100,
		0x00001820, 0xffc58100, 0x00001829, 0xffc5a100,
		0x00001831, 0xffc5c200, 0x00001839, 0xffc5e200,
		0x00001841, 0xffcd0000, 0x0000184a, 0xffcd2000,
		0x00001852, 0xffcd4000, 0x0000185a, 0xffcd6100,
		0x00001862, 0xffcd8100, 0x0000186a, 0xffcda100,
		0x00001873, 0xffcdc200, 0x0000187b, 0xffcde200,
		0x00001883, 0xffd50000, 0x0000188b, 0xffd52000,
		0x00001894, 0xffd54000, 0x0000189c, 0xffd56100,
		0x000018a4, 0xffd58100, 0x000018ac, 0xffd5a100,
		0x000018b4, 0xffd5c200, 0x000018bd, 0xffd5e200,
		0x000018c5, 0xffde0000, 0x000018cd, 0xffde2000,
		0x000018d5, 0xffde4000, 0x000018de, 0xffde6100,
		0x000018e6, 0xffde8100, 0x000018ee, 0xffdea100,
		0x000018f6, 0xffdec200, 0x000018ff, 0xffdee200,
		0x00001c00, 0xffe60000, 0x00001c08, 0xffe62000,
		0x00001c10, 0xffe64000, 0x00001c18, 0xffe66100,
		0x00001c20, 0xffe68100, 0x00001c29, 0xffe6a100,
		0x00001c31, 0xffe6c200, 0x00001c39, 0xffe6e200,
		0x00001c41, 0xffee0000, 0x00001c4a, 0xffee2000,
		0x00001c52, 0xffee4000, 0x00001c5a, 0xffee6100,
		0x00001c62, 0xffee8100, 0x00001c6a, 0xffeea100,
		0x00001c73, 0xffeec200, 0x00001c7b, 0xffeee200,
		0x00001c83, 0xfff60000, 0x00001c8b, 0xfff62000,
		0x00001c94, 0xfff64000, 0x00001c9c, 0xfff66100,
		0x00001ca4, 0xfff68100, 0x00001cac, 0xfff6a100,
		0x00001cb4, 0xfff6c200, 0x00001cbd, 0xfff6e200,
		0x00001cc5, 0xffff0000, 0x00001ccd, 0xffff2000,
		0x00001cd5, 0xffff4000, 0x00001cde, 0xffff6100,
		0x00001ce6, 0xffff8100, 0x00001cee, 0xffffa100,
		0x00001cf6, 0xffffc200, 0x00001cff, 0xffffe200
};
static void Blit_RGB565_ARGB8888(SDL_BlitInfo *info)
{
    Blit_RGB565_32(info, RGB565_ARGB8888_LUT);
}

/* Special optimized blit for RGB 5-6-5 --> ABGR 8-8-8-8 */
static const Uint32 RGB565_ABGR8888_LUT[512] = {
		0xff000000, 0x00000000, 0xff080000, 0x00002000,
		0xff100000, 0x00004000, 0xff180000, 0x00006100,
		0xff200000, 0x00008100, 0xff290000, 0x0000a100,
		0xff310000, 0x0000c200, 0xff390000, 0x0000e200,
		0xff410000, 0x00000008, 0xff4a0000, 0x00002008,
		0xff520000, 0x00004008, 0xff5a0000, 0x00006108,
		0xff620000, 0x00008108, 0xff6a0000, 0x0000a108,
		0xff730000, 0x0000c208, 0xff7b0000, 0x0000e208,
		0xff830000, 0x00000010, 0xff8b0000, 0x00002010,
		0xff940000, 0x00004010, 0xff9c0000, 0x00006110,
		0xffa40000, 0x00008110, 0xffac0000, 0x0000a110,
		0xffb40000, 0x0000c210, 0xffbd0000, 0x0000e210,
		0xffc50000, 0x00000018, 0xffcd0000, 0x00002018,
		0xffd50000, 0x00004018, 0xffde0000, 0x00006118,
		0xffe60000, 0x00008118, 0xffee0000, 0x0000a118,
		0xfff60000, 0x0000c218, 0xffff0000, 0x0000e218,
		0xff000400, 0x00000020, 0xff080400, 0x00002020,
		0xff100400, 0x00004020, 0xff180400, 0x00006120,
		0xff200400, 0x00008120, 0xff290400, 0x0000a120,
		0xff310400, 0x0000c220, 0xff390400, 0x0000e220,
		0xff410400, 0x00000029, 0xff4a0400, 0x00002029,
		0xff520400, 0x00004029, 0xff5a0400, 0x00006129,
		0xff620400, 0x00008129, 0xff6a0400, 0x0000a129,
		0xff730400, 0x0000c229, 0xff7b0400, 0x0000e229,
		0xff830400, 0x00000031, 0xff8b0400, 0x00002031,
		0xff940400, 0x00004031, 0xff9c0400, 0x00006131,
		0xffa40400, 0x00008131, 0xffac0400, 0x0000a131,
		0xffb40400, 0x0000c231, 0xffbd0400, 0x0000e231,
		0xffc50400, 0x00000039, 0xffcd0400, 0x00002039,
		0xffd50400, 0x00004039, 0xffde0400, 0x00006139,
		0xffe60400, 0x00008139, 0xffee0400, 0x0000a139,
		0xfff60400, 0x0000c239, 0xffff0400, 0x0000e239,
		0xff000800, 0x00000041, 0xff080800, 0x00002041,
		0xff100800, 0x00004041, 0xff180800, 0x00006141,
		0xff200800, 0x00008141, 0xff290800, 0x0000a141,
		0xff310800, 0x0000c241, 0xff390800, 0x0000e241,
		0xff410800, 0x0000004a, 0xff4a0800, 0x0000204a,
		0xff520800, 0x0000404a, 0xff5a0800, 0x0000614a,
		0xff620800, 0x0000814a, 0xff6a0800, 0x0000a14a,
		0xff730800, 0x0000c24a, 0xff7b0800, 0x0000e24a,
		0xff830800, 0x00000052, 0xff8b0800, 0x00002052,
		0xff940800, 0x00004052, 0xff9c0800, 0x00006152,
		0xffa40800, 0x00008152, 0xffac0800, 0x0000a152,
		0xffb40800, 0x0000c252, 0xffbd0800, 0x0000e252,
		0xffc50800, 0x0000005a, 0xffcd0800, 0x0000205a,
		0xffd50800, 0x0000405a, 0xffde0800, 0x0000615a,
		0xffe60800, 0x0000815a, 0xffee0800, 0x0000a15a,
		0xfff60800, 0x0000c25a, 0xffff0800, 0x0000e25a,
		0xff000c00, 0x00000062, 0xff080c00, 0x00002062,
		0xff100c00, 0x00004062, 0xff180c00, 0x00006162,
		0xff200c00, 0x00008162, 0xff290c00, 0x0000a162,
		0xff310c00, 0x0000c262, 0xff390c00, 0x0000e262,
		0xff410c00, 0x0000006a, 0xff4a0c00, 0x0000206a,
		0xff520c00, 0x0000406a, 0xff5a0c00, 0x0000616a,
		0xff620c00, 0x0000816a, 0xff6a0c00, 0x0000a16a,
		0xff730c00, 0x0000c26a, 0xff7b0c00, 0x0000e26a,
		0xff830c00, 0x00000073, 0xff8b0c00, 0x00002073,
		0xff940c00, 0x00004073, 0xff9c0c00, 0x00006173,
		0xffa40c00, 0x00008173, 0xffac0c00, 0x0000a173,
		0xffb40c00, 0x0000c273, 0xffbd0c00, 0x0000e273,
		0xffc50c00, 0x0000007b, 0xffcd0c00, 0x0000207b,
		0xffd50c00, 0x0000407b, 0xffde0c00, 0x0000617b,
		0xffe60c00, 0x0000817b, 0xffee0c00, 0x0000a17b,
		0xfff60c00, 0x0000c27b, 0xffff0c00, 0x0000e27b,
		0xff001000, 0x00000083, 0xff081000, 0x00002083,
		0xff101000, 0x00004083, 0xff181000, 0x00006183,
		0xff201000, 0x00008183, 0xff291000, 0x0000a183,
		0xff311000, 0x0000c283, 0xff391000, 0x0000e283,
		0xff411000, 0x0000008b, 0xff4a1000, 0x0000208b,
		0xff521000, 0x0000408b, 0xff5a1000, 0x0000618b,
		0xff621000, 0x0000818b, 0xff6a1000, 0x0000a18b,
		0xff731000, 0x0000c28b, 0xff7b1000, 0x0000e28b,
		0xff831000, 0x00000094, 0xff8b1000, 0x00002094,
		0xff941000, 0x00004094, 0xff9c1000, 0x00006194,
		0xffa41000, 0x00008194, 0xffac1000, 0x0000a194,
		0xffb41000, 0x0000c294, 0xffbd1000, 0x0000e294,
		0xffc51000, 0x0000009c, 0xffcd1000, 0x0000209c,
		0xffd51000, 0x0000409c, 0xffde1000, 0x0000619c,
		0xffe61000, 0x0000819c, 0xffee1000, 0x0000a19c,
		0xfff61000, 0x0000c29c, 0xffff1000, 0x0000e29c,
		0xff001400, 0x000000a4, 0xff081400, 0x000020a4,
		0xff101400, 0x000040a4, 0xff181400, 0x000061a4,
		0xff201400, 0x000081a4, 0xff291400, 0x0000a1a4,
		0xff311400, 0x0000c2a4, 0xff391400, 0x0000e2a4,
		0xff411400, 0x000000ac, 0xff4a1400, 0x000020ac,
		0xff521400, 0x000040ac, 0xff5a1400, 0x000061ac,
		0xff621400, 0x000081ac, 0xff6a1400, 0x0000a1ac,
		0xff731400, 0x0000c2ac, 0xff7b1400, 0x0000e2ac,
		0xff831400, 0x000000b4, 0xff8b1400, 0x000020b4,
		0xff941400, 0x000040b4, 0xff9c1400, 0x000061b4,
		0xffa41400, 0x000081b4, 0xffac1400, 0x0000a1b4,
		0xffb41400, 0x0000c2b4, 0xffbd1400, 0x0000e2b4,
		0xffc51400, 0x000000bd, 0xffcd1400, 0x000020bd,
		0xffd51400, 0x000040bd, 0xffde1400, 0x000061bd,
		0xffe61400, 0x000081bd, 0xffee1400, 0x0000a1bd,
		0xfff61400, 0x0000c2bd, 0xffff1400, 0x0000e2bd,
		0xff001800, 0x000000c5, 0xff081800, 0x000020c5,
		0xff101800, 0x000040c5, 0xff181800, 0x000061c5,
		0xff201800, 0x000081c5, 0xff291800, 0x0000a1c5,
		0xff311800, 0x0000c2c5, 0xff391800, 0x0000e2c5,
		0xff411800, 0x000000cd, 0xff4a1800, 0x000020cd,
		0xff521800, 0x000040cd, 0xff5a1800, 0x000061cd,
		0xff621800, 0x000081cd, 0xff6a1800, 0x0000a1cd,
		0xff731800, 0x0000c2cd, 0xff7b1800, 0x0000e2cd,
		0xff831800, 0x000000d5, 0xff8b1800, 0x000020d5,
		0xff941800, 0x000040d5, 0xff9c1800, 0x000061d5,
		0xffa41800, 0x000081d5, 0xffac1800, 0x0000a1d5,
		0xffb41800, 0x0000c2d5, 0xffbd1800, 0x0000e2d5,
		0xffc51800, 0x000000de, 0xffcd1800, 0x000020de,
		0xffd51800, 0x000040de, 0xffde1800, 0x000061de,
		0xffe61800, 0x000081de, 0xffee1800, 0x0000a1de,
		0xfff61800, 0x0000c2de, 0xffff1800, 0x0000e2de,
		0xff001c00, 0x000000e6, 0xff081c00, 0x000020e6,
		0xff101c00, 0x000040e6, 0xff181c00, 0x000061e6,
		0xff201c00, 0x000081e6, 0xff291c00, 0x0000a1e6,
		0xff311c00, 0x0000c2e6, 0xff391c00, 0x0000e2e6,
		0xff411c00, 0x000000ee, 0xff4a1c00, 0x000020ee,
		0xff521c00, 0x000040ee, 0xff5a1c00, 0x000061ee,
		0xff621c00, 0x000081ee, 0xff6a1c00, 0x0000a1ee,
		0xff731c00, 0x0000c2ee, 0xff7b1c00, 0x0000e2ee,
		0xff831c00, 0x000000f6, 0xff8b1c00, 0x000020f6,
		0xff941c00, 0x000040f6, 0xff9c1c00, 0x000061f6,
		0xffa41c00, 0x000081f6, 0xffac1c00, 0x0000a1f6,
		0xffb41c00, 0x0000c2f6, 0xffbd1c00, 0x0000e2f6,
		0xffc51c00, 0x000000ff, 0xffcd1c00, 0x000020ff,
		0xffd51c00, 0x000040ff, 0xffde1c00, 0x000061ff,
		0xffe61c00, 0x000081ff, 0xffee1c00, 0x0000a1ff,
		0xfff61c00, 0x0000c2ff, 0xffff1c00, 0x0000e2ff
};
static void Blit_RGB565_ABGR8888(SDL_BlitInfo *info)
{
    Blit_RGB565_32(info, RGB565_ABGR8888_LUT);
}

/* Special optimized blit for RGB 5-6-5 --> RGBA 8-8-8-8 */
static const Uint32 RGB565_RGBA8888_LUT[512] = {
		0x000000ff, 0x00000000, 0x000008ff, 0x00200000,
		0x000010ff, 0x00400000, 0x000018ff, 0x00610000,
		0x000020ff, 0x00810000, 0x000029ff, 0x00a10000,
		0x000031ff, 0x00c20000, 0x000039ff, 0x00e20000,
		0x000041ff, 0x08000000, 0x00004aff, 0x08200000,
		0x000052ff, 0x08400000, 0x00005aff, 0x08610000,
		0x000062ff, 0x08810000, 0x00006aff, 0x08a10000,
		0x000073ff, 0x08c20000, 0x00007bff, 0x08e20000,
		0x000083ff, 0x10000000, 0x00008bff, 0x10200000,
		0x000094ff, 0x10400000, 0x00009cff, 0x10610000,
		0x0000a4ff, 0x10810000, 0x0000acff, 0x10a10000,
		0x0000b4ff, 0x10c20000, 0x0000bdff, 0x10e20000,
		0x0000c5ff, 0x18000000, 0x0000cdff, 0x18200000,
		0x0000d5ff, 0x18400000, 0x0000deff, 0x18610000,
		0x0000e6ff, 0x18810000, 0x0000eeff, 0x18a10000,
		0x0000f6ff, 0x18c20000, 0x0000ffff, 0x18e20000,
		0x000400ff, 0x20000000, 0x000408ff, 0x20200000,
		0x000410ff, 0x20400000, 0x000418ff, 0x20610000,
		0x000420ff, 0x20810000, 0x000429ff, 0x20a10000,
		0x000431ff, 0x20c20000, 0x000439ff, 0x20e20000,
		0x000441ff, 0x29000000, 0x00044aff, 0x29200000,
		0x000452ff, 0x29400000, 0x00045aff, 0x29610000,
		0x000462ff, 0x29810000, 0x00046aff, 0x29a10000,
		0x000473ff, 0x29c20000, 0x00047bff, 0x29e20000,
		0x000483ff, 0x31000000, 0x00048bff, 0x31200000,
		0x000494ff, 0x31400000, 0x00049cff, 0x31610000,
		0x0004a4ff, 0x31810000, 0x0004acff, 0x31a10000,
		0x0004b4ff, 0x31c20000, 0x0004bdff, 0x31e20000,
		0x0004c5ff, 0x39000000, 0x0004cdff, 0x39200000,
		0x0004d5ff, 0x39400000, 0x0004deff, 0x39610000,
		0x0004e6ff, 0x39810000, 0x0004eeff, 0x39a10000,
		0x0004f6ff, 0x39c20000, 0x0004ffff, 0x39e20000,
		0x000800ff, 0x41000000, 0x000808ff, 0x41200000,
		0x000810ff, 0x41400000, 0x000818ff, 0x41610000,
		0x000820ff, 0x41810000, 0x000829ff, 0x41a10000,
		0x000831ff, 0x41c20000, 0x000839ff, 0x41e20000,
		0x000841ff, 0x4a000000, 0x00084aff, 0x4a200000,
		0x000852ff, 0x4a400000, 0x00085aff, 0x4a610000,
		0x000862ff, 0x4a810000, 0x00086aff, 0x4aa10000,
		0x000873ff, 0x4ac20000, 0x00087bff, 0x4ae20000,
		0x000883ff, 0x52000000, 0x00088bff, 0x52200000,
		0x000894ff, 0x52400000, 0x00089cff, 0x52610000,
		0x0008a4ff, 0x52810000, 0x0008acff, 0x52a10000,
		0x0008b4ff, 0x52c20000, 0x0008bdff, 0x52e20000,
		0x0008c5ff, 0x5a000000, 0x0008cdff, 0x5a200000,
		0x0008d5ff, 0x5a400000, 0x0008deff, 0x5a610000,
		0x0008e6ff, 0x5a810000, 0x0008eeff, 0x5aa10000,
		0x0008f6ff, 0x5ac20000, 0x0008ffff, 0x5ae20000,
		0x000c00ff, 0x62000000, 0x000c08ff, 0x62200000,
		0x000c10ff, 0x62400000, 0x000c18ff, 0x62610000,
		0x000c20ff, 0x62810000, 0x000c29ff, 0x62a10000,
		0x000c31ff, 0x62c20000, 0x000c39ff, 0x62e20000,
		0x000c41ff, 0x6a000000, 0x000c4aff, 0x6a200000,
		0x000c52ff, 0x6a400000, 0x000c5aff, 0x6a610000,
		0x000c62ff, 0x6a810000, 0x000c6aff, 0x6aa10000,
		0x000c73ff, 0x6ac20000, 0x000c7bff, 0x6ae20000,
		0x000c83ff, 0x73000000, 0x000c8bff, 0x73200000,
		0x000c94ff, 0x73400000, 0x000c9cff, 0x73610000,
		0x000ca4ff, 0x73810000, 0x000cacff, 0x73a10000,
		0x000cb4ff, 0x73c20000, 0x000cbdff, 0x73e20000,
		0x000cc5ff, 0x7b000000, 0x000ccdff, 0x7b200000,
		0x000cd5ff, 0x7b400000, 0x000cdeff, 0x7b610000,
		0x000ce6ff, 0x7b810000, 0x000ceeff, 0x7ba10000,
		0x000cf6ff, 0x7bc20000, 0x000cffff, 0x7be20000,
		0x001000ff, 0x83000000, 0x001008ff, 0x83200000,
		0x001010ff, 0x83400000, 0x001018ff, 0x83610000,
		0x001020ff, 0x83810000, 0x001029ff, 0x83a10000,
		0x001031ff, 0x83c20000, 0x001039ff, 0x83e20000,
		0x001041ff, 0x8b000000, 0x00104aff, 0x8b200000,
		0x001052ff, 0x8b400000, 0x00105aff, 0x8b610000,
		0x001062ff, 0x8b810000, 0x00106aff, 0x8ba10000,
		0x001073ff, 0x8bc20000, 0x00107bff, 0x8be20000,
		0x001083ff, 0x94000000, 0x00108bff, 0x94200000,
		0x001094ff, 0x94400000, 0x00109cff, 0x94610000,
		0x0010a4ff, 0x94810000, 0x0010acff, 0x94a10000,
		0x0010b4ff, 0x94c20000, 0x0010bdff, 0x94e20000,
		0x0010c5ff, 0x9c000000, 0x0010cdff, 0x9c200000,
		0x0010d5ff, 0x9c400000, 0x0010deff, 0x9c610000,
		0x0010e6ff, 0x9c810000, 0x0010eeff, 0x9ca10000,
		0x0010f6ff, 0x9cc20000, 0x0010ffff, 0x9ce20000,
		0x001400ff, 0xa4000000, 0x001408ff, 0xa4200000,
		0x001410ff, 0xa4400000, 0x001418ff, 0xa4610000,
		0x001420ff, 0xa4810000, 0x001429ff, 0xa4a10000,
		0x001431ff, 0xa4c20000, 0x001439ff, 0xa4e20000,
		0x001441ff, 0xac000000, 0x00144aff, 0xac200000,
		0x001452ff, 0xac400000, 0x00145aff, 0xac610000,
		0x001462ff, 0xac810000, 0x00146aff, 0xaca10000,
		0x001473ff, 0xacc20000, 0x00147bff, 0xace20000,
		0x001483ff, 0xb4000000, 0x00148bff, 0xb4200000,
		0x001494ff, 0xb4400000, 0x00149cff, 0xb4610000,
		0x0014a4ff, 0xb4810000, 0x0014acff, 0xb4a10000,
		0x0014b4ff, 0xb4c20000, 0x0014bdff, 0xb4e20000,
		0x0014c5ff, 0xbd000000, 0x0014cdff, 0xbd200000,
		0x0014d5ff, 0xbd400000, 0x0014deff, 0xbd610000,
		0x0014e6ff, 0xbd810000, 0x0014eeff, 0xbda10000,
		0x0014f6ff, 0xbdc20000, 0x0014ffff, 0xbde20000,
		0x001800ff, 0xc5000000, 0x001808ff, 0xc5200000,
		0x001810ff, 0xc5400000, 0x001818ff, 0xc5610000,
		0x001820ff, 0xc5810000, 0x001829ff, 0xc5a10000,
		0x001831ff, 0xc5c20000, 0x001839ff, 0xc5e20000,
		0x001841ff, 0xcd000000, 0x00184aff, 0xcd200000,
		0x001852ff, 0xcd400000, 0x00185aff, 0xcd610000,
		0x001862ff, 0xcd810000, 0x00186aff, 0xcda10000,
		0x001873ff, 0xcdc20000, 0x00187bff, 0xcde20000,
		0x001883ff, 0xd5000000, 0x00188bff, 0xd5200000,
		0x001894ff, 0xd5400000, 0x00189cff, 0xd5610000,
		0x0018a4ff, 0xd5810000, 0x0018acff, 0xd5a10000,
		0x0018b4ff, 0xd5c20000, 0x0018bdff, 0xd5e20000,
		0x0018c5ff, 0xde000000, 0x0018cdff, 0xde200000,
		0x0018d5ff, 0xde400000, 0x0018deff, 0xde610000,
		0x0018e6ff, 0xde810000, 0x0018eeff, 0xdea10000,
		0x0018f6ff, 0xdec20000, 0x0018ffff, 0xdee20000,
		0x001c00ff, 0xe6000000, 0x001c08ff, 0xe6200000,
		0x001c10ff, 0xe6400000, 0x001c18ff, 0xe6610000,
		0x001c20ff, 0xe6810000, 0x001c29ff, 0xe6a10000,
		0x001c31ff, 0xe6c20000, 0x001c39ff, 0xe6e20000,
		0x001c41ff, 0xee000000, 0x001c4aff, 0xee200000,
		0x001c52ff, 0xee400000, 0x001c5aff, 0xee610000,
		0x001c62ff, 0xee810000, 0x001c6aff, 0xeea10000,
		0x001c73ff, 0xeec20000, 0x001c7bff, 0xeee20000,
		0x001c83ff, 0xf6000000, 0x001c8bff, 0xf6200000,
		0x001c94ff, 0xf6400000, 0x001c9cff, 0xf6610000,
		0x001ca4ff, 0xf6810000, 0x001cacff, 0xf6a10000,
		0x001cb4ff, 0xf6c20000, 0x001cbdff, 0xf6e20000,
		0x001cc5ff, 0xff000000, 0x001ccdff, 0xff200000,
		0x001cd5ff, 0xff400000, 0x001cdeff, 0xff610000,
		0x001ce6ff, 0xff810000, 0x001ceeff, 0xffa10000,
		0x001cf6ff, 0xffc20000, 0x001cffff, 0xffe20000,
};
static void Blit_RGB565_RGBA8888(SDL_BlitInfo *info)
{
    Blit_RGB565_32(info, RGB565_RGBA8888_LUT);
}

/* Special optimized blit for RGB 5-6-5 --> BGRA 8-8-8-8 */
static const Uint32 RGB565_BGRA8888_LUT[512] = {
		0x00000000, 0x000000ff, 0x08000000, 0x002000ff,
		0x10000000, 0x004000ff, 0x18000000, 0x006100ff,
		0x20000000, 0x008100ff, 0x29000000, 0x00a100ff,
		0x31000000, 0x00c200ff, 0x39000000, 0x00e200ff,
		0x41000000, 0x000008ff, 0x4a000000, 0x002008ff,
		0x52000000, 0x004008ff, 0x5a000000, 0x006108ff,
		0x62000000, 0x008108ff, 0x6a000000, 0x00a108ff,
		0x73000000, 0x00c208ff, 0x7b000000, 0x00e208ff,
		0x83000000, 0x000010ff, 0x8b000000, 0x002010ff,
		0x94000000, 0x004010ff, 0x9c000000, 0x006110ff,
		0xa4000000, 0x008110ff, 0xac000000, 0x00a110ff,
		0xb4000000, 0x00c210ff, 0xbd000000, 0x00e210ff,
		0xc5000000, 0x000018ff, 0xcd000000, 0x002018ff,
		0xd5000000, 0x004018ff, 0xde000000, 0x006118ff,
		0xe6000000, 0x008118ff, 0xee000000, 0x00a118ff,
		0xf6000000, 0x00c218ff, 0xff000000, 0x00e218ff,
		0x00040000, 0x000020ff, 0x08040000, 0x002020ff,
		0x10040000, 0x004020ff, 0x18040000, 0x006120ff,
		0x20040000, 0x008120ff, 0x29040000, 0x00a120ff,
		0x31040000, 0x00c220ff, 0x39040000, 0x00e220ff,
		0x41040000, 0x000029ff, 0x4a040000, 0x002029ff,
		0x52040000, 0x004029ff, 0x5a040000, 0x006129ff,
		0x62040000, 0x008129ff, 0x6a040000, 0x00a129ff,
		0x73040000, 0x00c229ff, 0x7b040000, 0x00e229ff,
		0x83040000, 0x000031ff, 0x8b040000, 0x002031ff,
		0x94040000, 0x004031ff, 0x9c040000, 0x006131ff,
		0xa4040000, 0x008131ff, 0xac040000, 0x00a131ff,
		0xb4040000, 0x00c231ff, 0xbd040000, 0x00e231ff,
		0xc5040000, 0x000039ff, 0xcd040000, 0x002039ff,
		0xd5040000, 0x004039ff, 0xde040000, 0x006139ff,
		0xe6040000, 0x008139ff, 0xee040000, 0x00a139ff,
		0xf6040000, 0x00c239ff, 0xff040000, 0x00e239ff,
		0x00080000, 0x000041ff, 0x08080000, 0x002041ff,
		0x10080000, 0x004041ff, 0x18080000, 0x006141ff,
		0x20080000, 0x008141ff, 0x29080000, 0x00a141ff,
		0x31080000, 0x00c241ff, 0x39080000, 0x00e241ff,
		0x41080000, 0x00004aff, 0x4a080000, 0x00204aff,
		0x52080000, 0x00404aff, 0x5a080000, 0x00614aff,
		0x62080000, 0x00814aff, 0x6a080000, 0x00a14aff,
		0x73080000, 0x00c24aff, 0x7b080000, 0x00e24aff,
		0x83080000, 0x000052ff, 0x8b080000, 0x002052ff,
		0x94080000, 0x004052ff, 0x9c080000, 0x006152ff,
		0xa4080000, 0x008152ff, 0xac080000, 0x00a152ff,
		0xb4080000, 0x00c252ff, 0xbd080000, 0x00e252ff,
		0xc5080000, 0x00005aff, 0xcd080000, 0x00205aff,
		0xd5080000, 0x00405aff, 0xde080000, 0x00615aff,
		0xe6080000, 0x00815aff, 0xee080000, 0x00a15aff,
		0xf6080000, 0x00c25aff, 0xff080000, 0x00e25aff,
		0x000c0000, 0x000062ff, 0x080c0000, 0x002062ff,
		0x100c0000, 0x004062ff, 0x180c0000, 0x006162ff,
		0x200c0000, 0x008162ff, 0x290c0000, 0x00a162ff,
		0x310c0000, 0x00c262ff, 0x390c0000, 0x00e262ff,
		0x410c0000, 0x00006aff, 0x4a0c0000, 0x00206aff,
		0x520c0000, 0x00406aff, 0x5a0c0000, 0x00616aff,
		0x620c0000, 0x00816aff, 0x6a0c0000, 0x00a16aff,
		0x730c0000, 0x00c26aff, 0x7b0c0000, 0x00e26aff,
		0x830c0000, 0x000073ff, 0x8b0c0000, 0x002073ff,
		0x940c0000, 0x004073ff, 0x9c0c0000, 0x006173ff,
		0xa40c0000, 0x008173ff, 0xac0c0000, 0x00a173ff,
		0xb40c0000, 0x00c273ff, 0xbd0c0000, 0x00e273ff,
		0xc50c0000, 0x00007bff, 0xcd0c0000, 0x00207bff,
		0xd50c0000, 0x00407bff, 0xde0c0000, 0x00617bff,
		0xe60c0000, 0x00817bff, 0xee0c0000, 0x00a17bff,
		0xf60c0000, 0x00c27bff, 0xff0c0000, 0x00e27bff,
		0x00100000, 0x000083ff, 0x08100000, 0x002083ff,
		0x10100000, 0x004083ff, 0x18100000, 0x006183ff,
		0x20100000, 0x008183ff, 0x29100000, 0x00a183ff,
		0x31100000, 0x00c283ff, 0x39100000, 0x00e283ff,
		0x41100000, 0x00008bff, 0x4a100000, 0x00208bff,
		0x52100000, 0x00408bff, 0x5a100000, 0x00618bff,
		0x62100000, 0x00818bff, 0x6a100000, 0x00a18bff,
		0x73100000, 0x00c28bff, 0x7b100000, 0x00e28bff,
		0x83100000, 0x000094ff, 0x8b100000, 0x002094ff,
		0x94100000, 0x004094ff, 0x9c100000, 0x006194ff,
		0xa4100000, 0x008194ff, 0xac100000, 0x00a194ff,
		0xb4100000, 0x00c294ff, 0xbd100000, 0x00e294ff,
		0xc5100000, 0x00009cff, 0xcd100000, 0x00209cff,
		0xd5100000, 0x00409cff, 0xde100000, 0x00619cff,
		0xe6100000, 0x00819cff, 0xee100000, 0x00a19cff,
		0xf6100000, 0x00c29cff, 0xff100000, 0x00e29cff,
		0x00140000, 0x0000a4ff, 0x08140000, 0x0020a4ff,
		0x10140000, 0x0040a4ff, 0x18140000, 0x0061a4ff,
		0x20140000, 0x0081a4ff, 0x29140000, 0x00a1a4ff,
		0x31140000, 0x00c2a4ff, 0x39140000, 0x00e2a4ff,
		0x41140000, 0x0000acff, 0x4a140000, 0x0020acff,
		0x52140000, 0x0040acff, 0x5a140000, 0x0061acff,
		0x62140000, 0x0081acff, 0x6a140000, 0x00a1acff,
		0x73140000, 0x00c2acff, 0x7b140000, 0x00e2acff,
		0x83140000, 0x0000b4ff, 0x8b140000, 0x0020b4ff,
		0x94140000, 0x0040b4ff, 0x9c140000, 0x0061b4ff,
		0xa4140000, 0x0081b4ff, 0xac140000, 0x00a1b4ff,
		0xb4140000, 0x00c2b4ff, 0xbd140000, 0x00e2b4ff,
		0xc5140000, 0x0000bdff, 0xcd140000, 0x0020bdff,
		0xd5140000, 0x0040bdff, 0xde140000, 0x0061bdff,
		0xe6140000, 0x0081bdff, 0xee140000, 0x00a1bdff,
		0xf6140000, 0x00c2bdff, 0xff140000, 0x00e2bdff,
		0x00180000, 0x0000c5ff, 0x08180000, 0x0020c5ff,
		0x10180000, 0x0040c5ff, 0x18180000, 0x0061c5ff,
		0x20180000, 0x0081c5ff, 0x29180000, 0x00a1c5ff,
		0x31180000, 0x00c2c5ff, 0x39180000, 0x00e2c5ff,
		0x41180000, 0x0000cdff, 0x4a180000, 0x0020cdff,
		0x52180000, 0x0040cdff, 0x5a180000, 0x0061cdff,
		0x62180000, 0x0081cdff, 0x6a180000, 0x00a1cdff,
		0x73180000, 0x00c2cdff, 0x7b180000, 0x00e2cdff,
		0x83180000, 0x0000d5ff, 0x8b180000, 0x0020d5ff,
		0x94180000, 0x0040d5ff, 0x9c180000, 0x0061d5ff,
		0xa4180000, 0x0081d5ff, 0xac180000, 0x00a1d5ff,
		0xb4180000, 0x00c2d5ff, 0xbd180000, 0x00e2d5ff,
		0xc5180000, 0x0000deff, 0xcd180000, 0x0020deff,
		0xd5180000, 0x0040deff, 0xde180000, 0x0061deff,
		0xe6180000, 0x0081deff, 0xee180000, 0x00a1deff,
		0xf6180000, 0x00c2deff, 0xff180000, 0x00e2deff,
		0x001c0000, 0x0000e6ff, 0x081c0000, 0x0020e6ff,
		0x101c0000, 0x0040e6ff, 0x181c0000, 0x0061e6ff,
		0x201c0000, 0x0081e6ff, 0x291c0000, 0x00a1e6ff,
		0x311c0000, 0x00c2e6ff, 0x391c0000, 0x00e2e6ff,
		0x411c0000, 0x0000eeff, 0x4a1c0000, 0x0020eeff,
		0x521c0000, 0x0040eeff, 0x5a1c0000, 0x0061eeff,
		0x621c0000, 0x0081eeff, 0x6a1c0000, 0x00a1eeff,
		0x731c0000, 0x00c2eeff, 0x7b1c0000, 0x00e2eeff,
		0x831c0000, 0x0000f6ff, 0x8b1c0000, 0x0020f6ff,
		0x941c0000, 0x0040f6ff, 0x9c1c0000, 0x0061f6ff,
		0xa41c0000, 0x0081f6ff, 0xac1c0000, 0x00a1f6ff,
		0xb41c0000, 0x00c2f6ff, 0xbd1c0000, 0x00e2f6ff,
		0xc51c0000, 0x0000ffff, 0xcd1c0000, 0x0020ffff,
		0xd51c0000, 0x0040ffff, 0xde1c0000, 0x0061ffff,
		0xe61c0000, 0x0081ffff, 0xee1c0000, 0x00a1ffff,
		0xf61c0000, 0x00c2ffff, 0xff1c0000, 0x00e2ffff
};
static void Blit_RGB565_BGRA8888(SDL_BlitInfo *info)
{
    Blit_RGB565_32(info, RGB565_BGRA8888_LUT);
}

/* Special optimized blit for RGB 8-8-8 --> RGB 3-3-2 */
#ifndef RGB888_RGB332
#define RGB888_RGB332(dst, src) { \
	dst = (((src)&0x00E00000)>>16)| \
	      (((src)&0x0000E000)>>11)| \
	      (((src)&0x000000C0)>>6); \
}
#endif
static void Blit_RGB888_index8_map(SDL_BlitInfo *info)
{
#ifndef USE_DUFFS_LOOP
	int c;
#endif
	int pixel;
	int width, height;
	Uint32 *src;
	const Uint8 *map;
	Uint8 *dst;
	int srcskip, dstskip;

	/* Set up some basic variables */
	width = info->d_width;
	height = info->d_height;
	src = (Uint32 *)info->s_pixels;
	srcskip = info->s_skip/4;
	dst = info->d_pixels;
	dstskip = info->d_skip;
	map = info->table;

#ifdef USE_DUFFS_LOOP
	while ( height-- ) {
		DUFFS_LOOP(
			RGB888_RGB332(pixel, *src);
			*dst++ = map[pixel];
			++src;
		, width);
		src += srcskip;
		dst += dstskip;
	}
#else
	while ( height-- ) {
		for ( c=width/4; c; --c ) {
			/* Pack RGB into 8bit pixel */
			RGB888_RGB332(pixel, *src);
			*dst++ = map[pixel];
			++src;
			RGB888_RGB332(pixel, *src);
			*dst++ = map[pixel];
			++src;
			RGB888_RGB332(pixel, *src);
			*dst++ = map[pixel];
			++src;
			RGB888_RGB332(pixel, *src);
			*dst++ = map[pixel];
			++src;
		}
		switch ( width & 3 ) {
			case 3:
				RGB888_RGB332(pixel, *src);
				*dst++ = map[pixel];
				++src;
			case 2:
				RGB888_RGB332(pixel, *src);
				*dst++ = map[pixel];
				++src;
			case 1:
				RGB888_RGB332(pixel, *src);
				*dst++ = map[pixel];
				++src;
		}
		src += srcskip;
		dst += dstskip;
	}
#endif /* USE_DUFFS_LOOP */
}
static void BlitNto1(SDL_BlitInfo *info)
{
#ifndef USE_DUFFS_LOOP
	int c;
#endif
	int width, height;
	Uint8 *src;
	const Uint8 *map;
	Uint8 *dst;
	int srcskip, dstskip;
	int srcbpp;
	Uint32 pixel;
	int  sR, sG, sB;
	SDL_PixelFormat *srcfmt;

	/* Set up some basic variables */
	width = info->d_width;
	height = info->d_height;
	src = info->s_pixels;
	srcskip = info->s_skip;
	dst = info->d_pixels;
	dstskip = info->d_skip;
	map = info->table;
	srcfmt = info->src;
	srcbpp = srcfmt->BytesPerPixel;

	if ( map == NULL ) {
		while ( height-- ) {
#ifdef USE_DUFFS_LOOP
			DUFFS_LOOP(
				DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
								sR, sG, sB);
				if ( 1 ) {
				  	/* Pack RGB into 8bit pixel */
				  	*dst = ((sR>>5)<<(3+2))|
					        ((sG>>5)<<(2)) |
					        ((sB>>6)<<(0)) ;
				}
				dst++;
				src += srcbpp;
			, width);
#else
			for ( c=width; c; --c ) {
				DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
								sR, sG, sB);
				if ( 1 ) {
				  	/* Pack RGB into 8bit pixel */
				  	*dst = ((sR>>5)<<(3+2))|
					        ((sG>>5)<<(2)) |
					        ((sB>>6)<<(0)) ;
				}
				dst++;
				src += srcbpp;
			}
#endif
			src += srcskip;
			dst += dstskip;
		}
	} else {
		while ( height-- ) {
#ifdef USE_DUFFS_LOOP
			DUFFS_LOOP(
				DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
								sR, sG, sB);
				if ( 1 ) {
				  	/* Pack RGB into 8bit pixel */
				  	*dst = map[((sR>>5)<<(3+2))|
						   ((sG>>5)<<(2))  |
						   ((sB>>6)<<(0))  ];
				}
				dst++;
				src += srcbpp;
			, width);
#else
			for ( c=width; c; --c ) {
				DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
								sR, sG, sB);
				if ( 1 ) {
				  	/* Pack RGB into 8bit pixel */
				  	*dst = map[((sR>>5)<<(3+2))|
						   ((sG>>5)<<(2))  |
						   ((sB>>6)<<(0))  ];
				}
				dst++;
				src += srcbpp;
			}
#endif /* USE_DUFFS_LOOP */
			src += srcskip;
			dst += dstskip;
		}
	}
}
static void BlitNtoN(SDL_BlitInfo *info)
{
	int width = info->d_width;
	int height = info->d_height;
	Uint8 *src = info->s_pixels;
	int srcskip = info->s_skip;
	Uint8 *dst = info->d_pixels;
	int dstskip = info->d_skip;
	SDL_PixelFormat *srcfmt = info->src;
	int srcbpp = srcfmt->BytesPerPixel;
	SDL_PixelFormat *dstfmt = info->dst;
	int dstbpp = dstfmt->BytesPerPixel;
	unsigned alpha = dstfmt->Amask ? srcfmt->alpha : 0;

	while ( height-- ) {
		DUFFS_LOOP(
		{
		        Uint32 pixel;
			unsigned sR;
			unsigned sG;
			unsigned sB;
			DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB);
			ASSEMBLE_RGBA(dst, dstbpp, dstfmt, sR, sG, sB, alpha);
			dst += dstbpp;
			src += srcbpp;
		},
		width);
		src += srcskip;
		dst += dstskip;
	}
}

static void BlitNtoNCopyAlpha(SDL_BlitInfo *info)
{
	int width = info->d_width;
	int height = info->d_height;
	Uint8 *src = info->s_pixels;
	int srcskip = info->s_skip;
	Uint8 *dst = info->d_pixels;
	int dstskip = info->d_skip;
	SDL_PixelFormat *srcfmt = info->src;
	int srcbpp = srcfmt->BytesPerPixel;
	SDL_PixelFormat *dstfmt = info->dst;
	int dstbpp = dstfmt->BytesPerPixel;
	int c;

	/* FIXME: should map alpha to [0..255] correctly! */
	while ( height-- ) {
		for ( c=width; c; --c ) {
		        Uint32 pixel;
			unsigned sR, sG, sB, sA;
			DISEMBLE_RGBA(src, srcbpp, srcfmt, pixel,
				      sR, sG, sB, sA);
			ASSEMBLE_RGBA(dst, dstbpp, dstfmt,
				      sR, sG, sB, sA);
			dst += dstbpp;
			src += srcbpp;
		}
		src += srcskip;
		dst += dstskip;
	}
}

static void BlitNto1Key(SDL_BlitInfo *info)
{
	int width = info->d_width;
	int height = info->d_height;
	Uint8 *src = info->s_pixels;
	int srcskip = info->s_skip;
	Uint8 *dst = info->d_pixels;
	int dstskip = info->d_skip;
	SDL_PixelFormat *srcfmt = info->src;
	const Uint8 *palmap = info->table;
	Uint32 ckey = srcfmt->colorkey;
	Uint32 rgbmask = ~srcfmt->Amask;
	int srcbpp;
	Uint32 pixel;
	Uint8  sR, sG, sB;

	/* Set up some basic variables */
	srcbpp = srcfmt->BytesPerPixel;
	ckey &= rgbmask;

	if ( palmap == NULL ) {
		while ( height-- ) {
			DUFFS_LOOP(
			{
				DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
								sR, sG, sB);
				if ( (pixel & rgbmask) != ckey ) {
				  	/* Pack RGB into 8bit pixel */
				  	*dst = ((sR>>5)<<(3+2))|
						((sG>>5)<<(2)) |
						((sB>>6)<<(0)) ;
				}
				dst++;
				src += srcbpp;
			},
			width);
			src += srcskip;
			dst += dstskip;
		}
	} else {
		while ( height-- ) {
			DUFFS_LOOP(
			{
				DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
								sR, sG, sB);
				if ( (pixel & rgbmask) != ckey ) {
				  	/* Pack RGB into 8bit pixel */
				  	*dst = palmap[((sR>>5)<<(3+2))|
							((sG>>5)<<(2))  |
							((sB>>6)<<(0))  ];
				}
				dst++;
				src += srcbpp;
			},
			width);
			src += srcskip;
			dst += dstskip;
		}
	}
}

static void Blit2to2Key(SDL_BlitInfo *info)
{
	int width = info->d_width;
	int height = info->d_height;
	Uint16 *srcp = (Uint16 *)info->s_pixels;
	int srcskip = info->s_skip;
	Uint16 *dstp = (Uint16 *)info->d_pixels;
	int dstskip = info->d_skip;
	Uint32 ckey = info->src->colorkey;
	Uint32 rgbmask = ~info->src->Amask;

	/* Set up some basic variables */
        srcskip /= 2;
        dstskip /= 2;
	ckey &= rgbmask;

	while ( height-- ) {
		DUFFS_LOOP(
		{
			if ( (*srcp & rgbmask) != ckey ) {
				*dstp = *srcp;
			}
			dstp++;
			srcp++;
		},
		width);
		srcp += srcskip;
		dstp += dstskip;
	}
}

static void BlitNtoNKey(SDL_BlitInfo *info)
{
	int width = info->d_width;
	int height = info->d_height;
	Uint8 *src = info->s_pixels;
	int srcskip = info->s_skip;
	Uint8 *dst = info->d_pixels;
	int dstskip = info->d_skip;
	Uint32 ckey = info->src->colorkey;
	SDL_PixelFormat *srcfmt = info->src;
	SDL_PixelFormat *dstfmt = info->dst;
	int srcbpp = srcfmt->BytesPerPixel;
	int dstbpp = dstfmt->BytesPerPixel;
	unsigned alpha = dstfmt->Amask ? srcfmt->alpha : 0;

	while ( height-- ) {
		DUFFS_LOOP(
		{
		        Uint32 pixel;
			unsigned sR;
			unsigned sG;
			unsigned sB;
			RETRIEVE_RGB_PIXEL(src, srcbpp, pixel);
			if ( pixel != ckey ) {
			        RGB_FROM_PIXEL(pixel, srcfmt, sR, sG, sB);
				ASSEMBLE_RGBA(dst, dstbpp, dstfmt,
					      sR, sG, sB, alpha);
			}
			dst += dstbpp;
			src += srcbpp;
		},
		width);
		src += srcskip;
		dst += dstskip;
	}
}

static void BlitNtoNKeyCopyAlpha(SDL_BlitInfo *info)
{
	int width = info->d_width;
	int height = info->d_height;
	Uint8 *src = info->s_pixels;
	int srcskip = info->s_skip;
	Uint8 *dst = info->d_pixels;
	int dstskip = info->d_skip;
	Uint32 ckey = info->src->colorkey;
	SDL_PixelFormat *srcfmt = info->src;
	SDL_PixelFormat *dstfmt = info->dst;
	Uint32 rgbmask = ~srcfmt->Amask;

	Uint8 srcbpp;
	Uint8 dstbpp;
	Uint32 pixel;
	Uint8  sR, sG, sB, sA;

	/* Set up some basic variables */
	srcbpp = srcfmt->BytesPerPixel;
	dstbpp = dstfmt->BytesPerPixel;
	ckey &= rgbmask;

	/* FIXME: should map alpha to [0..255] correctly! */
	while ( height-- ) {
		DUFFS_LOOP(
		{
			DISEMBLE_RGBA(src, srcbpp, srcfmt, pixel,
				      sR, sG, sB, sA);
			if ( (pixel & rgbmask) != ckey ) {
				  ASSEMBLE_RGBA(dst, dstbpp, dstfmt,
						sR, sG, sB, sA);
			}
			dst += dstbpp;
			src += srcbpp;
		},
		width);
		src += srcskip;
		dst += dstskip;
	}
}

/* Normal N to N optimized blitters */
struct blit_table {
	Uint32 srcR, srcG, srcB;
	int dstbpp;
	Uint32 dstR, dstG, dstB;
	SDL_bool cpu_mmx;
	void *aux_data;
	SDL_loblit blitfunc;
        enum { NO_ALPHA, SET_ALPHA, COPY_ALPHA } alpha;
};
static const struct blit_table normal_blit_1[] = {
	/* Default for 8-bit RGB source, an invalid combination */
	{ 0,0,0, 0, 0,0,0, 0, NULL, NULL },
};
static const struct blit_table normal_blit_2[] = {
#ifdef USE_ASMBLIT
    { 0x0000F800,0x000007E0,0x0000001F, 2, 0x0000001F,0x000007E0,0x0000F800,
      0, ConvertX86p16_16BGR565, ConvertX86, NO_ALPHA },
    { 0x0000F800,0x000007E0,0x0000001F, 2, 0x00007C00,0x000003E0,0x0000001F,
      0, ConvertX86p16_16RGB555, ConvertX86, NO_ALPHA },
    { 0x0000F800,0x000007E0,0x0000001F, 2, 0x0000001F,0x000003E0,0x00007C00,
      0, ConvertX86p16_16BGR555, ConvertX86, NO_ALPHA },
#endif
    { 0x0000F800,0x000007E0,0x0000001F, 4, 0x00FF0000,0x0000FF00,0x000000FF,
      0, NULL, Blit_RGB565_ARGB8888, SET_ALPHA },
    { 0x0000F800,0x000007E0,0x0000001F, 4, 0x000000FF,0x0000FF00,0x00FF0000,
      0, NULL, Blit_RGB565_ABGR8888, SET_ALPHA },
    { 0x0000F800,0x000007E0,0x0000001F, 4, 0xFF000000,0x00FF0000,0x0000FF00,
      0, NULL, Blit_RGB565_RGBA8888, SET_ALPHA },
    { 0x0000F800,0x000007E0,0x0000001F, 4, 0x0000FF00,0x00FF0000,0xFF000000,
      0, NULL, Blit_RGB565_BGRA8888, SET_ALPHA },

    /* Default for 16-bit RGB source, used if no other blitter matches */
    { 0,0,0, 0, 0,0,0, 0, NULL, BlitNtoN, 0 }
};
static const struct blit_table normal_blit_3[] = {
	/* Default for 24-bit RGB source, never optimized */
    { 0,0,0, 0, 0,0,0, 0, NULL, BlitNtoN, 0 }
};
static const struct blit_table normal_blit_4[] = {
#ifdef USE_ASMBLIT
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000F800,0x000007E0,0x0000001F,
      1, ConvertMMXpII32_16RGB565, ConvertMMX, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000F800,0x000007E0,0x0000001F,
      0, ConvertX86p32_16RGB565, ConvertX86, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000001F,0x000007E0,0x0000F800,
      1, ConvertMMXpII32_16BGR565, ConvertMMX, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000001F,0x000007E0,0x0000F800,
      0, ConvertX86p32_16BGR565, ConvertX86, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x00007C00,0x000003E0,0x0000001F,
      1, ConvertMMXpII32_16RGB555, ConvertMMX, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x00007C00,0x000003E0,0x0000001F,
      0, ConvertX86p32_16RGB555, ConvertX86, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000001F,0x000003E0,0x00007C00,
      1, ConvertMMXpII32_16BGR555, ConvertMMX, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000001F,0x000003E0,0x00007C00,
      0, ConvertX86p32_16BGR555, ConvertX86, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 3, 0x00FF0000,0x0000FF00,0x000000FF,
      0, ConvertX86p32_24RGB888, ConvertX86, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 3, 0x000000FF,0x0000FF00,0x00FF0000,
      0, ConvertX86p32_24BGR888, ConvertX86, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 4, 0x000000FF,0x0000FF00,0x00FF0000,
      0, ConvertX86p32_32BGR888, ConvertX86, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 4, 0xFF000000,0x00FF0000,0x0000FF00,
      0, ConvertX86p32_32RGBA888, ConvertX86, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 4, 0x0000FF00,0x00FF0000,0xFF000000,
      0, ConvertX86p32_32BGRA888, ConvertX86, NO_ALPHA },
#else
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000F800,0x000007E0,0x0000001F,
      0, NULL, Blit_RGB888_RGB565, NO_ALPHA },
    { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x00007C00,0x000003E0,0x0000001F,
      0, NULL, Blit_RGB888_RGB555, NO_ALPHA },
#endif
	/* Default for 32-bit RGB source, used if no other blitter matches */
	{ 0,0,0, 0, 0,0,0, 0, NULL, BlitNtoN, 0 }
};
static const struct blit_table *normal_blit[] = {
	normal_blit_1, normal_blit_2, normal_blit_3, normal_blit_4
};

SDL_loblit SDL_CalculateBlitN(SDL_Surface *surface, int blit_index)
{
	struct private_swaccel *sdata;
	SDL_PixelFormat *srcfmt;
	SDL_PixelFormat *dstfmt;
	const struct blit_table *table;
	int which;
	SDL_loblit blitfun;

	/* Set up data for choosing the blit */
	sdata = surface->map->sw_data;
	srcfmt = surface->format;
	dstfmt = surface->map->dst->format;

	if ( blit_index & 2 ) {
	        /* alpha or alpha+colorkey */
	        return SDL_CalculateAlphaBlit(surface, blit_index);
	}

	/* We don't support destinations less than 8-bits */
	if ( dstfmt->BitsPerPixel < 8 ) {
		return(NULL);
	}
	
	if(blit_index == 1) {
	    /* colorkey blit: Here we don't have too many options, mostly
	       because RLE is the preferred fast way to deal with this.
	       If a particular case turns out to be useful we'll add it. */

	    if(srcfmt->BytesPerPixel == 2
	       && surface->map->identity)
		return Blit2to2Key;
	    else if(dstfmt->BytesPerPixel == 1)
		return BlitNto1Key;
	    else {
		if(srcfmt->Amask && dstfmt->Amask)
		    return BlitNtoNKeyCopyAlpha;
		else
		    return BlitNtoNKey;
	    }
	}

	blitfun = NULL;
	if ( dstfmt->BitsPerPixel == 8 ) {
		/* We assume 8-bit destinations are palettized */
		if ( (srcfmt->BytesPerPixel == 4) &&
		     (srcfmt->Rmask == 0x00FF0000) &&
		     (srcfmt->Gmask == 0x0000FF00) &&
		     (srcfmt->Bmask == 0x000000FF) ) {
			if ( surface->map->table ) {
				blitfun = Blit_RGB888_index8_map;
			} else {
#ifdef USE_ASMBLIT
				sdata->aux_data = ConvertX86p32_8RGB332;
				blitfun = ConvertX86;
#else
				blitfun = Blit_RGB888_index8;
#endif
			}
		} else {
			blitfun = BlitNto1;
		}
	} else {
		/* Now the meat, choose the blitter we want */
	        int a_need = 0;
		if(dstfmt->Amask)
		    a_need = srcfmt->Amask ? COPY_ALPHA : SET_ALPHA;
		table = normal_blit[srcfmt->BytesPerPixel-1];
		for ( which=0; table[which].srcR; ++which ) {
			if ( srcfmt->Rmask == table[which].srcR &&
			     srcfmt->Gmask == table[which].srcG &&
			     srcfmt->Bmask == table[which].srcB &&
			     dstfmt->BytesPerPixel == table[which].dstbpp &&
			     dstfmt->Rmask == table[which].dstR &&
			     dstfmt->Gmask == table[which].dstG &&
			     dstfmt->Bmask == table[which].dstB &&
			     (a_need & table[which].alpha) == a_need &&
			     (table[which].cpu_mmx == SDL_HasMMX())) 
				break;
		}
		sdata->aux_data = table[which].aux_data;
		blitfun = table[which].blitfunc;
		if(a_need == COPY_ALPHA && blitfun == BlitNtoN)
		    blitfun = BlitNtoNCopyAlpha;
	}

#ifdef DEBUG_ASM
#ifdef USE_ASMBLIT
	if ( blitfun == ConvertMMX )
		fprintf(stderr, "Using mmx blit\n");
	else
	if ( blitfun == ConvertX86 )
		fprintf(stderr, "Using asm blit\n");
	else
#endif
	if ( (blitfun == SDL_BlitNtoN) || (blitfun == SDL_BlitNto1) )
		fprintf(stderr, "Using C blit\n");
	else
		fprintf(stderr, "Using optimized C blit\n");
#endif /* DEBUG_ASM */

	return(blitfun);
}