view src/video/SDL_blit_N.c @ 5275:7aba0406c273

Frank Zago to sdl The following patch fixes some of the bitrot for the Nintendo DS port. The support is still basic at the moment, but it allows to run the "general" test under the current head of tree (parent: 5269:11bd1585efb5 tip). Most of the patch is mine, but I integrated a couple changes that John Magnotti posted on Feb 1st.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 12 Feb 2011 11:36:56 -0800
parents b530ef003506
children
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2011 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#include "SDL_video.h"
#include "SDL_endian.h"
#include "SDL_cpuinfo.h"
#include "SDL_blit.h"

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

/* Feature 1 is has-MMX */
#define GetBlitFeatures() ((Uint32)(SDL_HasMMX() ? 1 : 0))

/* 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 = (Uint8)((((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->dst_w;
    height = info->dst_h;
    src = (Uint32 *) info->src;
    srcskip = info->src_skip / 4;
    dst = info->dst;
    dstskip = info->dst_skip;
    map = info->table;

    if (map == NULL) {
        while (height--) {
#ifdef USE_DUFFS_LOOP
			/* *INDENT-OFF* */
			DUFFS_LOOP(
				RGB888_RGB332(*dst++, *src);
			, width);
			/* *INDENT-ON* */
#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
			/* *INDENT-OFF* */
			DUFFS_LOOP(
				RGB888_RGB332(Pixel, *src);
				*dst++ = map[Pixel];
				++src;
			, width);
			/* *INDENT-ON* */
#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) = (Uint16)((((*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->dst_w;
    height = info->dst_h;
    src = (Uint32 *) info->src;
    srcskip = info->src_skip / 4;
    dst = (Uint16 *) info->dst;
    dstskip = info->dst_skip / 2;

#ifdef USE_DUFFS_LOOP
    while (height--) {
		/* *INDENT-OFF* */
		DUFFS_LOOP(
			RGB888_RGB555(dst, src);
			++src;
			++dst;
		, width);
		/* *INDENT-ON* */
        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) = (Uint16)((((*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->dst_w;
    height = info->dst_h;
    src = (Uint32 *) info->src;
    srcskip = info->src_skip / 4;
    dst = (Uint16 *) info->dst;
    dstskip = info->dst_skip / 2;

#ifdef USE_DUFFS_LOOP
    while (height--) {
		/* *INDENT-OFF* */
		DUFFS_LOOP(
			RGB888_RGB565(dst, src);
			++src;
			++dst;
		, width);
		/* *INDENT-ON* */
        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 */
}


/* Special optimized blit for RGB 5-6-5 --> 32-bit RGB surfaces */
#define RGB565_32(dst, src, map) (map[src[LO]*2] + map[src[HI]*2+1])
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->dst_w;
    height = info->dst_h;
    src = (Uint8 *) info->src;
    srcskip = info->src_skip;
    dst = (Uint32 *) info->dst;
    dstskip = info->dst_skip / 4;

#ifdef USE_DUFFS_LOOP
    while (height--) {
		/* *INDENT-OFF* */
		DUFFS_LOOP(
		{
			*dst++ = RGB565_32(dst, src, map);
			src += 2;
		},
		width);
		/* *INDENT-ON* */
        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->dst_w;
    height = info->dst_h;
    src = (Uint32 *) info->src;
    srcskip = info->src_skip / 4;
    dst = info->dst;
    dstskip = info->dst_skip;
    map = info->table;

#ifdef USE_DUFFS_LOOP
    while (height--) {
		/* *INDENT-OFF* */
		DUFFS_LOOP(
			RGB888_RGB332(Pixel, *src);
			*dst++ = map[Pixel];
			++src;
		, width);
		/* *INDENT-ON* */
        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->dst_w;
    height = info->dst_h;
    src = info->src;
    srcskip = info->src_skip;
    dst = info->dst;
    dstskip = info->dst_skip;
    map = info->table;
    srcfmt = info->src_fmt;
    srcbpp = srcfmt->BytesPerPixel;

    if (map == NULL) {
        while (height--) {
#ifdef USE_DUFFS_LOOP
			/* *INDENT-OFF* */
			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);
			/* *INDENT-ON* */
#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
			/* *INDENT-OFF* */
			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);
			/* *INDENT-ON* */
#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;
        }
    }
}

/* blits 32 bit RGB<->RGBA with both surfaces having the same R,G,B fields */
static void
Blit4to4MaskAlpha(SDL_BlitInfo * info)
{
    int width = info->dst_w;
    int height = info->dst_h;
    Uint32 *src = (Uint32 *) info->src;
    int srcskip = info->src_skip;
    Uint32 *dst = (Uint32 *) info->dst;
    int dstskip = info->dst_skip;
    SDL_PixelFormat *srcfmt = info->src_fmt;
    SDL_PixelFormat *dstfmt = info->dst_fmt;

    if (dstfmt->Amask) {
        /* RGB->RGBA, SET_ALPHA */
        Uint32 mask = (info->a >> dstfmt->Aloss) << dstfmt->Ashift;

        while (height--) {
			/* *INDENT-OFF* */
			DUFFS_LOOP(
			{
				*dst = *src | mask;
				++dst;
				++src;
			},
			width);
			/* *INDENT-ON* */
            src = (Uint32 *) ((Uint8 *) src + srcskip);
            dst = (Uint32 *) ((Uint8 *) dst + dstskip);
        }
    } else {
        /* RGBA->RGB, NO_ALPHA */
        Uint32 mask = srcfmt->Rmask | srcfmt->Gmask | srcfmt->Bmask;

        while (height--) {
			/* *INDENT-OFF* */
			DUFFS_LOOP(
			{
				*dst = *src & mask;
				++dst;
				++src;
			},
			width);
			/* *INDENT-ON* */
            src = (Uint32 *) ((Uint8 *) src + srcskip);
            dst = (Uint32 *) ((Uint8 *) dst + dstskip);
        }
    }
}

static void
BlitNtoN(SDL_BlitInfo * info)
{
    int width = info->dst_w;
    int height = info->dst_h;
    Uint8 *src = info->src;
    int srcskip = info->src_skip;
    Uint8 *dst = info->dst;
    int dstskip = info->dst_skip;
    SDL_PixelFormat *srcfmt = info->src_fmt;
    int srcbpp = srcfmt->BytesPerPixel;
    SDL_PixelFormat *dstfmt = info->dst_fmt;
    int dstbpp = dstfmt->BytesPerPixel;
    unsigned alpha = dstfmt->Amask ? info->a : 0;

    while (height--) {
		/* *INDENT-OFF* */
		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);
		/* *INDENT-ON* */
        src += srcskip;
        dst += dstskip;
    }
}

static void
BlitNtoNCopyAlpha(SDL_BlitInfo * info)
{
    int width = info->dst_w;
    int height = info->dst_h;
    Uint8 *src = info->src;
    int srcskip = info->src_skip;
    Uint8 *dst = info->dst;
    int dstskip = info->dst_skip;
    SDL_PixelFormat *srcfmt = info->src_fmt;
    int srcbpp = srcfmt->BytesPerPixel;
    SDL_PixelFormat *dstfmt = info->dst_fmt;
    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->dst_w;
    int height = info->dst_h;
    Uint8 *src = info->src;
    int srcskip = info->src_skip;
    Uint8 *dst = info->dst;
    int dstskip = info->dst_skip;
    SDL_PixelFormat *srcfmt = info->src_fmt;
    const Uint8 *palmap = info->table;
    Uint32 ckey = info->colorkey;
    Uint32 rgbmask = ~srcfmt->Amask;
    int srcbpp;
    Uint32 Pixel;
    unsigned sR, sG, sB;

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

    if (palmap == NULL) {
        while (height--) {
			/* *INDENT-OFF* */
			DUFFS_LOOP(
			{
				DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel,
								sR, sG, sB);
				if ( (Pixel & rgbmask) != ckey ) {
				  	/* Pack RGB into 8bit pixel */
				  	*dst = (Uint8)(((sR>>5)<<(3+2))|
						           ((sG>>5)<<(2)) |
						           ((sB>>6)<<(0)));
				}
				dst++;
				src += srcbpp;
			},
			width);
			/* *INDENT-ON* */
            src += srcskip;
            dst += dstskip;
        }
    } else {
        while (height--) {
			/* *INDENT-OFF* */
			DUFFS_LOOP(
			{
				DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel,
								sR, sG, sB);
				if ( (Pixel & rgbmask) != ckey ) {
				  	/* Pack RGB into 8bit pixel */
				  	*dst = (Uint8)palmap[((sR>>5)<<(3+2))|
							             ((sG>>5)<<(2))  |
							             ((sB>>6)<<(0))  ];
				}
				dst++;
				src += srcbpp;
			},
			width);
			/* *INDENT-ON* */
            src += srcskip;
            dst += dstskip;
        }
    }
}

static void
Blit2to2Key(SDL_BlitInfo * info)
{
    int width = info->dst_w;
    int height = info->dst_h;
    Uint16 *srcp = (Uint16 *) info->src;
    int srcskip = info->src_skip;
    Uint16 *dstp = (Uint16 *) info->dst;
    int dstskip = info->dst_skip;
    Uint32 ckey = info->colorkey;
    Uint32 rgbmask = ~info->src_fmt->Amask;

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

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

static void
BlitNtoNKey(SDL_BlitInfo * info)
{
    int width = info->dst_w;
    int height = info->dst_h;
    Uint8 *src = info->src;
    int srcskip = info->src_skip;
    Uint8 *dst = info->dst;
    int dstskip = info->dst_skip;
    Uint32 ckey = info->colorkey;
    SDL_PixelFormat *srcfmt = info->src_fmt;
    SDL_PixelFormat *dstfmt = info->dst_fmt;
    int srcbpp = srcfmt->BytesPerPixel;
    int dstbpp = dstfmt->BytesPerPixel;
    unsigned alpha = dstfmt->Amask ? info->a : 0;
    Uint32 rgbmask = ~srcfmt->Amask;

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

    while (height--) {
		/* *INDENT-OFF* */
		DUFFS_LOOP(
		{
            Uint32 Pixel;
			unsigned sR;
			unsigned sG;
			unsigned sB;
			RETRIEVE_RGB_PIXEL(src, srcbpp, Pixel);
			if ( (Pixel & rgbmask) != ckey ) {
                RGB_FROM_PIXEL(Pixel, srcfmt, sR, sG, sB);
				ASSEMBLE_RGBA(dst, dstbpp, dstfmt, sR, sG, sB, alpha);
			}
			dst += dstbpp;
			src += srcbpp;
		},
		width);
		/* *INDENT-ON* */
        src += srcskip;
        dst += dstskip;
    }
}

static void
BlitNtoNKeyCopyAlpha(SDL_BlitInfo * info)
{
    int width = info->dst_w;
    int height = info->dst_h;
    Uint8 *src = info->src;
    int srcskip = info->src_skip;
    Uint8 *dst = info->dst;
    int dstskip = info->dst_skip;
    Uint32 ckey = info->colorkey;
    SDL_PixelFormat *srcfmt = info->src_fmt;
    SDL_PixelFormat *dstfmt = info->dst_fmt;
    Uint32 rgbmask = ~srcfmt->Amask;

    Uint8 srcbpp;
    Uint8 dstbpp;
    Uint32 Pixel;
    unsigned 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--) {
		/* *INDENT-OFF* */
		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);
		/* *INDENT-ON* */
        src += srcskip;
        dst += dstskip;
    }
}

/* Normal N to N optimized blitters */
struct blit_table
{
    Uint32 srcR, srcG, srcB;
    int dstbpp;
    Uint32 dstR, dstG, dstB;
    Uint32 blit_features;
    SDL_BlitFunc blitfunc;
    enum
    { NO_ALPHA = 1, SET_ALPHA = 2, COPY_ALPHA = 4 } 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},
};

static const struct blit_table normal_blit_2[] = {
    {0x0000F800, 0x000007E0, 0x0000001F, 4, 0x00FF0000, 0x0000FF00,
     0x000000FF,
     0, Blit_RGB565_ARGB8888, SET_ALPHA},
    {0x0000F800, 0x000007E0, 0x0000001F, 4, 0x000000FF, 0x0000FF00,
     0x00FF0000,
     0, Blit_RGB565_ABGR8888, SET_ALPHA},
    {0x0000F800, 0x000007E0, 0x0000001F, 4, 0xFF000000, 0x00FF0000,
     0x0000FF00,
     0, Blit_RGB565_RGBA8888, SET_ALPHA},
    {0x0000F800, 0x000007E0, 0x0000001F, 4, 0x0000FF00, 0x00FF0000,
     0xFF000000,
     0, 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, 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, BlitNtoN, 0}
};

static const struct blit_table normal_blit_4[] = {
    {0x00FF0000, 0x0000FF00, 0x000000FF, 2, 0x0000F800, 0x000007E0,
     0x0000001F,
     0, Blit_RGB888_RGB565, NO_ALPHA},
    {0x00FF0000, 0x0000FF00, 0x000000FF, 2, 0x00007C00, 0x000003E0,
     0x0000001F,
     0, Blit_RGB888_RGB555, NO_ALPHA},
    /* Default for 32-bit RGB source, used if no other blitter matches */
    {0, 0, 0, 0, 0, 0, 0, 0, BlitNtoN, 0}
};

static const struct blit_table *const normal_blit[] = {
    normal_blit_1, normal_blit_2, normal_blit_3, normal_blit_4
};

/* Mask matches table, or table entry is zero */
#define MASKOK(x, y) (((x) == (y)) || ((y) == 0x00000000))

SDL_BlitFunc
SDL_CalculateBlitN(SDL_Surface * surface)
{
    SDL_PixelFormat *srcfmt;
    SDL_PixelFormat *dstfmt;
    const struct blit_table *table;
    int which;
    SDL_BlitFunc blitfun;

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

    /* We don't support destinations less than 8-bits */
    if (dstfmt->BitsPerPixel < 8) {
        return (NULL);
    }

    switch (surface->map->info.flags & ~SDL_COPY_RLE_MASK) {
    case 0:
        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->info.table) {
                    blitfun = Blit_RGB888_index8_map;
                } else {
                    blitfun = Blit_RGB888_index8;
                }
            } else {
                blitfun = BlitNto1;
            }
        } else {
            /* Now the meat, choose the blitter we want */
            int a_need = NO_ALPHA;
            if (dstfmt->Amask)
                a_need = srcfmt->Amask ? COPY_ALPHA : SET_ALPHA;
            table = normal_blit[srcfmt->BytesPerPixel - 1];
            for (which = 0; table[which].dstbpp; ++which) {
                if (MASKOK(srcfmt->Rmask, table[which].srcR) &&
                    MASKOK(srcfmt->Gmask, table[which].srcG) &&
                    MASKOK(srcfmt->Bmask, table[which].srcB) &&
                    MASKOK(dstfmt->Rmask, table[which].dstR) &&
                    MASKOK(dstfmt->Gmask, table[which].dstG) &&
                    MASKOK(dstfmt->Bmask, table[which].dstB) &&
                    dstfmt->BytesPerPixel == table[which].dstbpp &&
                    (a_need & table[which].alpha) == a_need &&
                    ((table[which].blit_features & GetBlitFeatures()) ==
                     table[which].blit_features))
                    break;
            }
            blitfun = table[which].blitfunc;

            if (blitfun == BlitNtoN) {  /* default C fallback catch-all. Slow! */
                /* Fastpath C fallback: 32bit RGB<->RGBA blit with matching RGB */
                if (srcfmt->BytesPerPixel == 4 && dstfmt->BytesPerPixel == 4
                    && srcfmt->Rmask == dstfmt->Rmask
                    && srcfmt->Gmask == dstfmt->Gmask
                    && srcfmt->Bmask == dstfmt->Bmask) {
                    blitfun = Blit4to4MaskAlpha;
                } else if (a_need == COPY_ALPHA) {
                    blitfun = BlitNtoNCopyAlpha;
                }
            }
        }
        return (blitfun);

    case SDL_COPY_COLORKEY:
        /* 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;
            }
        }
    }

    return NULL;
}

/* vi: set ts=4 sw=4 expandtab: */