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C/C++ Source or Header  |  2001-04-29  |  52KB  |  1,608 lines
  1. /*
  2.     SDL - Simple DirectMedia Layer
  3.     Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
  4.  
  5.     This library is free software; you can redistribute it and/or
  6.     modify it under the terms of the GNU Library General Public
  7.     License as published by the Free Software Foundation; either
  8.     version 2 of the License, or (at your option) any later version.
  9.  
  10.     This library is distributed in the hope that it will be useful,
  11.     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13.     Library General Public License for more details.
  14.  
  15.     You should have received a copy of the GNU Library General Public
  16.     License along with this library; if not, write to the Free
  17.     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18.  
  19.     Sam Lantinga
  20.     slouken@devolution.com
  21. */
  22.  
  23. #ifdef SAVE_RCSID
  24. static char rcsid =
  25.  "@(#) $Id: SDL_blit_N.c,v 1.4.2.9 2001/02/10 07:20:05 hercules Exp $";
  26. #endif
  27.  
  28. #include <stdio.h>
  29.  
  30. #include "SDL_types.h"
  31. #include "SDL_video.h"
  32. #include "SDL_blit.h"
  33. #include "SDL_byteorder.h"
  34.  
  35. /* Function to check the CPU flags */
  36. #define MMX_CPU        0x800000
  37. #ifdef USE_ASMBLIT
  38. #define CPU_Flags()    Hermes_X86_CPU()
  39. #else
  40. #define CPU_Flags()    0L
  41. #endif
  42.  
  43. /* Functions to blit from N-bit surfaces to other surfaces */
  44.  
  45. #ifdef USE_ASMBLIT
  46.  
  47. /* Heheheh, we coerce Hermes into using SDL blit information */
  48. #define X86_ASSEMBLER
  49. #define HermesConverterInterface    SDL_BlitInfo
  50. #define HermesClearInterface        void
  51. #define STACKCALL
  52. typedef Uint32 int32;
  53.  
  54. #include "HeadMMX.h"
  55. #include "HeadX86.h"
  56.  
  57. #else
  58.  
  59. /* This is now endian dependent */
  60. #if ( SDL_BYTEORDER == SDL_LIL_ENDIAN )
  61. #define HI    1
  62. #define LO    0
  63. #else /* ( SDL_BYTEORDER == SDL_BIG_ENDIAN ) */
  64. #define HI    0
  65. #define LO    1
  66. #endif
  67.  
  68. /* Special optimized blit for RGB 8-8-8 --> RGB 3-3-2 */
  69. #define RGB888_RGB332(dst, src) { \
  70.     dst = (((src)&0x00E00000)>>16)| \
  71.           (((src)&0x0000E000)>>11)| \
  72.           (((src)&0x000000C0)>>6); \
  73. }
  74. static void Blit_RGB888_index8(SDL_BlitInfo *info)
  75. {
  76. #ifndef USE_DUFFS_LOOP
  77.     int c;
  78. #endif
  79.     int width, height;
  80.     Uint32 *src;
  81.     Uint8 *map, *dst;
  82.     int srcskip, dstskip;
  83.  
  84.     /* Set up some basic variables */
  85.     width = info->d_width;
  86.     height = info->d_height;
  87.     src = (Uint32 *)info->s_pixels;
  88.     srcskip = info->s_skip/4;
  89.     dst = info->d_pixels;
  90.     dstskip = info->d_skip;
  91.     map = info->table;
  92.  
  93.     if ( map == NULL ) {
  94.         while ( height-- ) {
  95. #ifdef USE_DUFFS_LOOP
  96.             DUFFS_LOOP(
  97.                 RGB888_RGB332(*dst++, *src);
  98.             , width);
  99. #else
  100.             for ( c=width/4; c; --c ) {
  101.                 /* Pack RGB into 8bit pixel */
  102.                 ++src;
  103.                 RGB888_RGB332(*dst++, *src);
  104.                 ++src;
  105.                 RGB888_RGB332(*dst++, *src);
  106.                 ++src;
  107.                 RGB888_RGB332(*dst++, *src);
  108.                 ++src;
  109.             }
  110.             switch ( width % 4 ) {
  111.                 case 3:
  112.                     RGB888_RGB332(*dst++, *src);
  113.                     ++src;
  114.                 case 2:
  115.                     RGB888_RGB332(*dst++, *src);
  116.                     ++src;
  117.                 case 1:
  118.                     RGB888_RGB332(*dst++, *src);
  119.                     ++src;
  120.             }
  121. #endif /* USE_DUFFS_LOOP */
  122.             src += srcskip;
  123.             dst += dstskip;
  124.         }
  125.     } else {
  126.         int pixel;
  127.  
  128.         while ( height-- ) {
  129. #ifdef USE_DUFFS_LOOP
  130.             DUFFS_LOOP(
  131.                 RGB888_RGB332(pixel, *src);
  132.                 *dst++ = map[pixel];
  133.                 ++src;
  134.             , width);
  135. #else
  136.             for ( c=width/4; c; --c ) {
  137.                 /* Pack RGB into 8bit pixel */
  138.                 RGB888_RGB332(pixel, *src);
  139.                 *dst++ = map[pixel];
  140.                 ++src;
  141.                 RGB888_RGB332(pixel, *src);
  142.                 *dst++ = map[pixel];
  143.                 ++src;
  144.                 RGB888_RGB332(pixel, *src);
  145.                 *dst++ = map[pixel];
  146.                 ++src;
  147.                 RGB888_RGB332(pixel, *src);
  148.                 *dst++ = map[pixel];
  149.                 ++src;
  150.             }
  151.             switch ( width % 4 ) {
  152.                 case 3:
  153.                     RGB888_RGB332(pixel, *src);
  154.                     *dst++ = map[pixel];
  155.                     ++src;
  156.                 case 2:
  157.                     RGB888_RGB332(pixel, *src);
  158.                     *dst++ = map[pixel];
  159.                     ++src;
  160.                 case 1:
  161.                     RGB888_RGB332(pixel, *src);
  162.                     *dst++ = map[pixel];
  163.                     ++src;
  164.             }
  165. #endif /* USE_DUFFS_LOOP */
  166.             src += srcskip;
  167.             dst += dstskip;
  168.         }
  169.     }
  170. }
  171. /* Special optimized blit for RGB 8-8-8 --> RGB 5-5-5 */
  172. #define RGB888_RGB555(dst, src) { \
  173.     *(Uint16 *)(dst) = (((*src)&0x00F80000)>>9)| \
  174.                        (((*src)&0x0000F800)>>6)| \
  175.                        (((*src)&0x000000F8)>>3); \
  176. }
  177. #define RGB888_RGB555_TWO(dst, src) { \
  178.     *(Uint32 *)(dst) = (((((src[HI])&0x00F80000)>>9)| \
  179.                          (((src[HI])&0x0000F800)>>6)| \
  180.                          (((src[HI])&0x000000F8)>>3))<<16)| \
  181.                          (((src[LO])&0x00F80000)>>9)| \
  182.                          (((src[LO])&0x0000F800)>>6)| \
  183.                          (((src[LO])&0x000000F8)>>3); \
  184. }
  185. static void Blit_RGB888_RGB555(SDL_BlitInfo *info)
  186. {
  187. #ifndef USE_DUFFS_LOOP
  188.     int c;
  189. #endif
  190.     int width, height;
  191.     Uint32 *src;
  192.     Uint16 *dst;
  193.     int srcskip, dstskip;
  194.  
  195.     /* Set up some basic variables */
  196.     width = info->d_width;
  197.     height = info->d_height;
  198.     src = (Uint32 *)info->s_pixels;
  199.     srcskip = info->s_skip/4;
  200.     dst = (Uint16 *)info->d_pixels;
  201.     dstskip = info->d_skip/2;
  202.  
  203. #ifdef USE_DUFFS_LOOP
  204.     while ( height-- ) {
  205.         DUFFS_LOOP(
  206.             RGB888_RGB555(dst, src);
  207.             ++src;
  208.             ++dst;
  209.         , width);
  210.         src += srcskip;
  211.         dst += dstskip;
  212.     }
  213. #else
  214.     /* Memory align at 4-byte boundary, if necessary */
  215.     if ( (long)dst & 0x03 ) {
  216.         /* Don't do anything if width is 0 */
  217.         if ( width == 0 ) {
  218.             return;
  219.         }
  220.         --width;
  221.  
  222.         while ( height-- ) {
  223.             /* Perform copy alignment */
  224.             RGB888_RGB555(dst, src);
  225.             ++src;
  226.             ++dst;
  227.  
  228.             /* Copy in 4 pixel chunks */
  229.             for ( c=width/4; c; --c ) {
  230.                 RGB888_RGB555_TWO(dst, src);
  231.                 src += 2;
  232.                 dst += 2;
  233.                 RGB888_RGB555_TWO(dst, src);
  234.                 src += 2;
  235.                 dst += 2;
  236.             }
  237.             /* Get any leftovers */
  238.             switch (width % 4) {
  239.                 case 3:
  240.                     RGB888_RGB555(dst, src);
  241.                     ++src;
  242.                     ++dst;
  243.                 case 2:
  244.                     RGB888_RGB555_TWO(dst, src);
  245.                     src += 2;
  246.                     dst += 2;
  247.                     break;
  248.                 case 1:
  249.                     RGB888_RGB555(dst, src);
  250.                     ++src;
  251.                     ++dst;
  252.                     break;
  253.             }
  254.             src += srcskip;
  255.             dst += dstskip;
  256.         }
  257.     } else { 
  258.         while ( height-- ) {
  259.             /* Copy in 4 pixel chunks */
  260.             for ( c=width/4; c; --c ) {
  261.                 RGB888_RGB555_TWO(dst, src);
  262.                 src += 2;
  263.                 dst += 2;
  264.                 RGB888_RGB555_TWO(dst, src);
  265.                 src += 2;
  266.                 dst += 2;
  267.             }
  268.             /* Get any leftovers */
  269.             switch (width % 4) {
  270.                 case 3:
  271.                     RGB888_RGB555(dst, src);
  272.                     ++src;
  273.                     ++dst;
  274.                 case 2:
  275.                     RGB888_RGB555_TWO(dst, src);
  276.                     src += 2;
  277.                     dst += 2;
  278.                     break;
  279.                 case 1:
  280.                     RGB888_RGB555(dst, src);
  281.                     ++src;
  282.                     ++dst;
  283.                     break;
  284.             }
  285.             src += srcskip;
  286.             dst += dstskip;
  287.         }
  288.     }
  289. #endif /* USE_DUFFS_LOOP */
  290. }
  291. /* Special optimized blit for RGB 8-8-8 --> RGB 5-6-5 */
  292. #define RGB888_RGB565(dst, src) { \
  293.     *(Uint16 *)(dst) = (((*src)&0x00F80000)>>8)| \
  294.                        (((*src)&0x0000FC00)>>5)| \
  295.                        (((*src)&0x000000F8)>>3); \
  296. }
  297. #define RGB888_RGB565_TWO(dst, src) { \
  298.     *(Uint32 *)(dst) = (((((src[HI])&0x00F80000)>>8)| \
  299.                          (((src[HI])&0x0000FC00)>>5)| \
  300.                          (((src[HI])&0x000000F8)>>3))<<16)| \
  301.                          (((src[LO])&0x00F80000)>>8)| \
  302.                          (((src[LO])&0x0000FC00)>>5)| \
  303.                          (((src[LO])&0x000000F8)>>3); \
  304. }
  305. static void Blit_RGB888_RGB565(SDL_BlitInfo *info)
  306. {
  307. #ifndef USE_DUFFS_LOOP
  308.     int c;
  309. #endif
  310.     int width, height;
  311.     Uint32 *src;
  312.     Uint16 *dst;
  313.     int srcskip, dstskip;
  314.  
  315.     /* Set up some basic variables */
  316.     width = info->d_width;
  317.     height = info->d_height;
  318.     src = (Uint32 *)info->s_pixels;
  319.     srcskip = info->s_skip/4;
  320.     dst = (Uint16 *)info->d_pixels;
  321.     dstskip = info->d_skip/2;
  322.  
  323. #ifdef USE_DUFFS_LOOP
  324.     while ( height-- ) {
  325.         DUFFS_LOOP(
  326.             RGB888_RGB565(dst, src);
  327.             ++src;
  328.             ++dst;
  329.         , width);
  330.         src += srcskip;
  331.         dst += dstskip;
  332.     }
  333. #else
  334.     /* Memory align at 4-byte boundary, if necessary */
  335.     if ( (long)dst & 0x03 ) {
  336.         /* Don't do anything if width is 0 */
  337.         if ( width == 0 ) {
  338.             return;
  339.         }
  340.         --width;
  341.  
  342.         while ( height-- ) {
  343.             /* Perform copy alignment */
  344.             RGB888_RGB565(dst, src);
  345.             ++src;
  346.             ++dst;
  347.  
  348.             /* Copy in 4 pixel chunks */
  349.             for ( c=width/4; c; --c ) {
  350.                 RGB888_RGB565_TWO(dst, src);
  351.                 src += 2;
  352.                 dst += 2;
  353.                 RGB888_RGB565_TWO(dst, src);
  354.                 src += 2;
  355.                 dst += 2;
  356.             }
  357.             /* Get any leftovers */
  358.             switch (width % 4) {
  359.                 case 3:
  360.                     RGB888_RGB565(dst, src);
  361.                     ++src;
  362.                     ++dst;
  363.                 case 2:
  364.                     RGB888_RGB565_TWO(dst, src);
  365.                     src += 2;
  366.                     dst += 2;
  367.                     break;
  368.                 case 1:
  369.                     RGB888_RGB565(dst, src);
  370.                     ++src;
  371.                     ++dst;
  372.                     break;
  373.             }
  374.             src += srcskip;
  375.             dst += dstskip;
  376.         }
  377.     } else { 
  378.         while ( height-- ) {
  379.             /* Copy in 4 pixel chunks */
  380.             for ( c=width/4; c; --c ) {
  381.                 RGB888_RGB565_TWO(dst, src);
  382.                 src += 2;
  383.                 dst += 2;
  384.                 RGB888_RGB565_TWO(dst, src);
  385.                 src += 2;
  386.                 dst += 2;
  387.             }
  388.             /* Get any leftovers */
  389.             switch (width % 4) {
  390.                 case 3:
  391.                     RGB888_RGB565(dst, src);
  392.                     ++src;
  393.                     ++dst;
  394.                 case 2:
  395.                     RGB888_RGB565_TWO(dst, src);
  396.                     src += 2;
  397.                     dst += 2;
  398.                     break;
  399.                 case 1:
  400.                     RGB888_RGB565(dst, src);
  401.                     ++src;
  402.                     ++dst;
  403.                     break;
  404.             }
  405.             src += srcskip;
  406.             dst += dstskip;
  407.         }
  408.     }
  409. #endif /* USE_DUFFS_LOOP */
  410. }
  411.  
  412. #endif /* USE_ASMBLIT */
  413.  
  414.  
  415. /* Special optimized blit for RGB 5-6-5 --> 32-bit RGB surfaces */
  416. #if ( SDL_BYTEORDER == SDL_LIL_ENDIAN )
  417. #define RGB565_32(dst, src, map) (map[src[0]*2] + map[src[1]*2+1])
  418. #else /* ( SDL_BYTEORDER == SDL_BIG_ENDIAN ) */
  419. #define RGB565_32(dst, src, map) (map[src[1]*2] + map[src[0]*2+1])
  420. #endif
  421. static void Blit_RGB565_32(SDL_BlitInfo *info, Uint32 *map)
  422. {
  423. #ifndef USE_DUFFS_LOOP
  424.     int c;
  425. #endif
  426.     int width, height;
  427.     Uint8 *src;
  428.     Uint32 *dst;
  429.     int srcskip, dstskip;
  430.  
  431.     /* Set up some basic variables */
  432.     width = info->d_width;
  433.     height = info->d_height;
  434.     src = (Uint8 *)info->s_pixels;
  435.     srcskip = info->s_skip;
  436.     dst = (Uint32 *)info->d_pixels;
  437.     dstskip = info->d_skip/4;
  438.  
  439. #ifdef USE_DUFFS_LOOP
  440.     while ( height-- ) {
  441.         DUFFS_LOOP(
  442.         {
  443.             *dst++ = RGB565_32(dst, src, map);
  444.             src += 2;
  445.         },
  446.         width);
  447.         src += srcskip;
  448.         dst += dstskip;
  449.     }
  450. #else
  451.     while ( height-- ) {
  452.         /* Copy in 4 pixel chunks */
  453.         for ( c=width/4; c; --c ) {
  454.             *dst++ = RGB565_32(dst, src, map);
  455.             src += 2;
  456.             *dst++ = RGB565_32(dst, src, map);
  457.             src += 2;
  458.             *dst++ = RGB565_32(dst, src, map);
  459.             src += 2;
  460.             *dst++ = RGB565_32(dst, src, map);
  461.             src += 2;
  462.         }
  463.         /* Get any leftovers */
  464.         switch (width % 4) {
  465.             case 3:
  466.                 *dst++ = RGB565_32(dst, src, map);
  467.                 src += 2;
  468.             case 2:
  469.                 *dst++ = RGB565_32(dst, src, map);
  470.                 src += 2;
  471.             case 1:
  472.                 *dst++ = RGB565_32(dst, src, map);
  473.                 src += 2;
  474.                 break;
  475.         }
  476.         src += srcskip;
  477.         dst += dstskip;
  478.     }
  479. #endif /* USE_DUFFS_LOOP */
  480. }
  481.  
  482. /* Special optimized blit for RGB 5-6-5 --> ARGB 8-8-8-8 */
  483. static Uint32 RGB565_ARGB8888_LUT[512] = {
  484.         0x00000000, 0xff000000, 0x00000008, 0xff002000,
  485.         0x00000010, 0xff004000, 0x00000018, 0xff006100,
  486.         0x00000020, 0xff008100, 0x00000029, 0xff00a100,
  487.         0x00000031, 0xff00c200, 0x00000039, 0xff00e200,
  488.         0x00000041, 0xff080000, 0x0000004a, 0xff082000,
  489.         0x00000052, 0xff084000, 0x0000005a, 0xff086100,
  490.         0x00000062, 0xff088100, 0x0000006a, 0xff08a100,
  491.         0x00000073, 0xff08c200, 0x0000007b, 0xff08e200,
  492.         0x00000083, 0xff100000, 0x0000008b, 0xff102000,
  493.         0x00000094, 0xff104000, 0x0000009c, 0xff106100,
  494.         0x000000a4, 0xff108100, 0x000000ac, 0xff10a100,
  495.         0x000000b4, 0xff10c200, 0x000000bd, 0xff10e200,
  496.         0x000000c5, 0xff180000, 0x000000cd, 0xff182000,
  497.         0x000000d5, 0xff184000, 0x000000de, 0xff186100,
  498.         0x000000e6, 0xff188100, 0x000000ee, 0xff18a100,
  499.         0x000000f6, 0xff18c200, 0x000000ff, 0xff18e200,
  500.         0x00000400, 0xff200000, 0x00000408, 0xff202000,
  501.         0x00000410, 0xff204000, 0x00000418, 0xff206100,
  502.         0x00000420, 0xff208100, 0x00000429, 0xff20a100,
  503.         0x00000431, 0xff20c200, 0x00000439, 0xff20e200,
  504.         0x00000441, 0xff290000, 0x0000044a, 0xff292000,
  505.         0x00000452, 0xff294000, 0x0000045a, 0xff296100,
  506.         0x00000462, 0xff298100, 0x0000046a, 0xff29a100,
  507.         0x00000473, 0xff29c200, 0x0000047b, 0xff29e200,
  508.         0x00000483, 0xff310000, 0x0000048b, 0xff312000,
  509.         0x00000494, 0xff314000, 0x0000049c, 0xff316100,
  510.         0x000004a4, 0xff318100, 0x000004ac, 0xff31a100,
  511.         0x000004b4, 0xff31c200, 0x000004bd, 0xff31e200,
  512.         0x000004c5, 0xff390000, 0x000004cd, 0xff392000,
  513.         0x000004d5, 0xff394000, 0x000004de, 0xff396100,
  514.         0x000004e6, 0xff398100, 0x000004ee, 0xff39a100,
  515.         0x000004f6, 0xff39c200, 0x000004ff, 0xff39e200,
  516.         0x00000800, 0xff410000, 0x00000808, 0xff412000,
  517.         0x00000810, 0xff414000, 0x00000818, 0xff416100,
  518.         0x00000820, 0xff418100, 0x00000829, 0xff41a100,
  519.         0x00000831, 0xff41c200, 0x00000839, 0xff41e200,
  520.         0x00000841, 0xff4a0000, 0x0000084a, 0xff4a2000,
  521.         0x00000852, 0xff4a4000, 0x0000085a, 0xff4a6100,
  522.         0x00000862, 0xff4a8100, 0x0000086a, 0xff4aa100,
  523.         0x00000873, 0xff4ac200, 0x0000087b, 0xff4ae200,
  524.         0x00000883, 0xff520000, 0x0000088b, 0xff522000,
  525.         0x00000894, 0xff524000, 0x0000089c, 0xff526100,
  526.         0x000008a4, 0xff528100, 0x000008ac, 0xff52a100,
  527.         0x000008b4, 0xff52c200, 0x000008bd, 0xff52e200,
  528.         0x000008c5, 0xff5a0000, 0x000008cd, 0xff5a2000,
  529.         0x000008d5, 0xff5a4000, 0x000008de, 0xff5a6100,
  530.         0x000008e6, 0xff5a8100, 0x000008ee, 0xff5aa100,
  531.         0x000008f6, 0xff5ac200, 0x000008ff, 0xff5ae200,
  532.         0x00000c00, 0xff620000, 0x00000c08, 0xff622000,
  533.         0x00000c10, 0xff624000, 0x00000c18, 0xff626100,
  534.         0x00000c20, 0xff628100, 0x00000c29, 0xff62a100,
  535.         0x00000c31, 0xff62c200, 0x00000c39, 0xff62e200,
  536.         0x00000c41, 0xff6a0000, 0x00000c4a, 0xff6a2000,
  537.         0x00000c52, 0xff6a4000, 0x00000c5a, 0xff6a6100,
  538.         0x00000c62, 0xff6a8100, 0x00000c6a, 0xff6aa100,
  539.         0x00000c73, 0xff6ac200, 0x00000c7b, 0xff6ae200,
  540.         0x00000c83, 0xff730000, 0x00000c8b, 0xff732000,
  541.         0x00000c94, 0xff734000, 0x00000c9c, 0xff736100,
  542.         0x00000ca4, 0xff738100, 0x00000cac, 0xff73a100,
  543.         0x00000cb4, 0xff73c200, 0x00000cbd, 0xff73e200,
  544.         0x00000cc5, 0xff7b0000, 0x00000ccd, 0xff7b2000,
  545.         0x00000cd5, 0xff7b4000, 0x00000cde, 0xff7b6100,
  546.         0x00000ce6, 0xff7b8100, 0x00000cee, 0xff7ba100,
  547.         0x00000cf6, 0xff7bc200, 0x00000cff, 0xff7be200,
  548.         0x00001000, 0xff830000, 0x00001008, 0xff832000,
  549.         0x00001010, 0xff834000, 0x00001018, 0xff836100,
  550.         0x00001020, 0xff838100, 0x00001029, 0xff83a100,
  551.         0x00001031, 0xff83c200, 0x00001039, 0xff83e200,
  552.         0x00001041, 0xff8b0000, 0x0000104a, 0xff8b2000,
  553.         0x00001052, 0xff8b4000, 0x0000105a, 0xff8b6100,
  554.         0x00001062, 0xff8b8100, 0x0000106a, 0xff8ba100,
  555.         0x00001073, 0xff8bc200, 0x0000107b, 0xff8be200,
  556.         0x00001083, 0xff940000, 0x0000108b, 0xff942000,
  557.         0x00001094, 0xff944000, 0x0000109c, 0xff946100,
  558.         0x000010a4, 0xff948100, 0x000010ac, 0xff94a100,
  559.         0x000010b4, 0xff94c200, 0x000010bd, 0xff94e200,
  560.         0x000010c5, 0xff9c0000, 0x000010cd, 0xff9c2000,
  561.         0x000010d5, 0xff9c4000, 0x000010de, 0xff9c6100,
  562.         0x000010e6, 0xff9c8100, 0x000010ee, 0xff9ca100,
  563.         0x000010f6, 0xff9cc200, 0x000010ff, 0xff9ce200,
  564.         0x00001400, 0xffa40000, 0x00001408, 0xffa42000,
  565.         0x00001410, 0xffa44000, 0x00001418, 0xffa46100,
  566.         0x00001420, 0xffa48100, 0x00001429, 0xffa4a100,
  567.         0x00001431, 0xffa4c200, 0x00001439, 0xffa4e200,
  568.         0x00001441, 0xffac0000, 0x0000144a, 0xffac2000,
  569.         0x00001452, 0xffac4000, 0x0000145a, 0xffac6100,
  570.         0x00001462, 0xffac8100, 0x0000146a, 0xffaca100,
  571.         0x00001473, 0xffacc200, 0x0000147b, 0xfface200,
  572.         0x00001483, 0xffb40000, 0x0000148b, 0xffb42000,
  573.         0x00001494, 0xffb44000, 0x0000149c, 0xffb46100,
  574.         0x000014a4, 0xffb48100, 0x000014ac, 0xffb4a100,
  575.         0x000014b4, 0xffb4c200, 0x000014bd, 0xffb4e200,
  576.         0x000014c5, 0xffbd0000, 0x000014cd, 0xffbd2000,
  577.         0x000014d5, 0xffbd4000, 0x000014de, 0xffbd6100,
  578.         0x000014e6, 0xffbd8100, 0x000014ee, 0xffbda100,
  579.         0x000014f6, 0xffbdc200, 0x000014ff, 0xffbde200,
  580.         0x00001800, 0xffc50000, 0x00001808, 0xffc52000,
  581.         0x00001810, 0xffc54000, 0x00001818, 0xffc56100,
  582.         0x00001820, 0xffc58100, 0x00001829, 0xffc5a100,
  583.         0x00001831, 0xffc5c200, 0x00001839, 0xffc5e200,
  584.         0x00001841, 0xffcd0000, 0x0000184a, 0xffcd2000,
  585.         0x00001852, 0xffcd4000, 0x0000185a, 0xffcd6100,
  586.         0x00001862, 0xffcd8100, 0x0000186a, 0xffcda100,
  587.         0x00001873, 0xffcdc200, 0x0000187b, 0xffcde200,
  588.         0x00001883, 0xffd50000, 0x0000188b, 0xffd52000,
  589.         0x00001894, 0xffd54000, 0x0000189c, 0xffd56100,
  590.         0x000018a4, 0xffd58100, 0x000018ac, 0xffd5a100,
  591.         0x000018b4, 0xffd5c200, 0x000018bd, 0xffd5e200,
  592.         0x000018c5, 0xffde0000, 0x000018cd, 0xffde2000,
  593.         0x000018d5, 0xffde4000, 0x000018de, 0xffde6100,
  594.         0x000018e6, 0xffde8100, 0x000018ee, 0xffdea100,
  595.         0x000018f6, 0xffdec200, 0x000018ff, 0xffdee200,
  596.         0x00001c00, 0xffe60000, 0x00001c08, 0xffe62000,
  597.         0x00001c10, 0xffe64000, 0x00001c18, 0xffe66100,
  598.         0x00001c20, 0xffe68100, 0x00001c29, 0xffe6a100,
  599.         0x00001c31, 0xffe6c200, 0x00001c39, 0xffe6e200,
  600.         0x00001c41, 0xffee0000, 0x00001c4a, 0xffee2000,
  601.         0x00001c52, 0xffee4000, 0x00001c5a, 0xffee6100,
  602.         0x00001c62, 0xffee8100, 0x00001c6a, 0xffeea100,
  603.         0x00001c73, 0xffeec200, 0x00001c7b, 0xffeee200,
  604.         0x00001c83, 0xfff60000, 0x00001c8b, 0xfff62000,
  605.         0x00001c94, 0xfff64000, 0x00001c9c, 0xfff66100,
  606.         0x00001ca4, 0xfff68100, 0x00001cac, 0xfff6a100,
  607.         0x00001cb4, 0xfff6c200, 0x00001cbd, 0xfff6e200,
  608.         0x00001cc5, 0xffff0000, 0x00001ccd, 0xffff2000,
  609.         0x00001cd5, 0xffff4000, 0x00001cde, 0xffff6100,
  610.         0x00001ce6, 0xffff8100, 0x00001cee, 0xffffa100,
  611.         0x00001cf6, 0xffffc200, 0x00001cff, 0xffffe200
  612. };
  613. static void Blit_RGB565_ARGB8888(SDL_BlitInfo *info)
  614. {
  615.     Blit_RGB565_32(info, RGB565_ARGB8888_LUT);
  616. }
  617.  
  618. /* Special optimized blit for RGB 5-6-5 --> ABGR 8-8-8-8 */
  619. static Uint32 RGB565_ABGR8888_LUT[512] = {
  620.         0xff000000, 0x00000000, 0xff080000, 0x00002000,
  621.         0xff100000, 0x00004000, 0xff180000, 0x00006100,
  622.         0xff200000, 0x00008100, 0xff290000, 0x0000a100,
  623.         0xff310000, 0x0000c200, 0xff390000, 0x0000e200,
  624.         0xff410000, 0x00000008, 0xff4a0000, 0x00002008,
  625.         0xff520000, 0x00004008, 0xff5a0000, 0x00006108,
  626.         0xff620000, 0x00008108, 0xff6a0000, 0x0000a108,
  627.         0xff730000, 0x0000c208, 0xff7b0000, 0x0000e208,
  628.         0xff830000, 0x00000010, 0xff8b0000, 0x00002010,
  629.         0xff940000, 0x00004010, 0xff9c0000, 0x00006110,
  630.         0xffa40000, 0x00008110, 0xffac0000, 0x0000a110,
  631.         0xffb40000, 0x0000c210, 0xffbd0000, 0x0000e210,
  632.         0xffc50000, 0x00000018, 0xffcd0000, 0x00002018,
  633.         0xffd50000, 0x00004018, 0xffde0000, 0x00006118,
  634.         0xffe60000, 0x00008118, 0xffee0000, 0x0000a118,
  635.         0xfff60000, 0x0000c218, 0xffff0000, 0x0000e218,
  636.         0xff000400, 0x00000020, 0xff080400, 0x00002020,
  637.         0xff100400, 0x00004020, 0xff180400, 0x00006120,
  638.         0xff200400, 0x00008120, 0xff290400, 0x0000a120,
  639.         0xff310400, 0x0000c220, 0xff390400, 0x0000e220,
  640.         0xff410400, 0x00000029, 0xff4a0400, 0x00002029,
  641.         0xff520400, 0x00004029, 0xff5a0400, 0x00006129,
  642.         0xff620400, 0x00008129, 0xff6a0400, 0x0000a129,
  643.         0xff730400, 0x0000c229, 0xff7b0400, 0x0000e229,
  644.         0xff830400, 0x00000031, 0xff8b0400, 0x00002031,
  645.         0xff940400, 0x00004031, 0xff9c0400, 0x00006131,
  646.         0xffa40400, 0x00008131, 0xffac0400, 0x0000a131,
  647.         0xffb40400, 0x0000c231, 0xffbd0400, 0x0000e231,
  648.         0xffc50400, 0x00000039, 0xffcd0400, 0x00002039,
  649.         0xffd50400, 0x00004039, 0xffde0400, 0x00006139,
  650.         0xffe60400, 0x00008139, 0xffee0400, 0x0000a139,
  651.         0xfff60400, 0x0000c239, 0xffff0400, 0x0000e239,
  652.         0xff000800, 0x00000041, 0xff080800, 0x00002041,
  653.         0xff100800, 0x00004041, 0xff180800, 0x00006141,
  654.         0xff200800, 0x00008141, 0xff290800, 0x0000a141,
  655.         0xff310800, 0x0000c241, 0xff390800, 0x0000e241,
  656.         0xff410800, 0x0000004a, 0xff4a0800, 0x0000204a,
  657.         0xff520800, 0x0000404a, 0xff5a0800, 0x0000614a,
  658.         0xff620800, 0x0000814a, 0xff6a0800, 0x0000a14a,
  659.         0xff730800, 0x0000c24a, 0xff7b0800, 0x0000e24a,
  660.         0xff830800, 0x00000052, 0xff8b0800, 0x00002052,
  661.         0xff940800, 0x00004052, 0xff9c0800, 0x00006152,
  662.         0xffa40800, 0x00008152, 0xffac0800, 0x0000a152,
  663.         0xffb40800, 0x0000c252, 0xffbd0800, 0x0000e252,
  664.         0xffc50800, 0x0000005a, 0xffcd0800, 0x0000205a,
  665.         0xffd50800, 0x0000405a, 0xffde0800, 0x0000615a,
  666.         0xffe60800, 0x0000815a, 0xffee0800, 0x0000a15a,
  667.         0xfff60800, 0x0000c25a, 0xffff0800, 0x0000e25a,
  668.         0xff000c00, 0x00000062, 0xff080c00, 0x00002062,
  669.         0xff100c00, 0x00004062, 0xff180c00, 0x00006162,
  670.         0xff200c00, 0x00008162, 0xff290c00, 0x0000a162,
  671.         0xff310c00, 0x0000c262, 0xff390c00, 0x0000e262,
  672.         0xff410c00, 0x0000006a, 0xff4a0c00, 0x0000206a,
  673.         0xff520c00, 0x0000406a, 0xff5a0c00, 0x0000616a,
  674.         0xff620c00, 0x0000816a, 0xff6a0c00, 0x0000a16a,
  675.         0xff730c00, 0x0000c26a, 0xff7b0c00, 0x0000e26a,
  676.         0xff830c00, 0x00000073, 0xff8b0c00, 0x00002073,
  677.         0xff940c00, 0x00004073, 0xff9c0c00, 0x00006173,
  678.         0xffa40c00, 0x00008173, 0xffac0c00, 0x0000a173,
  679.         0xffb40c00, 0x0000c273, 0xffbd0c00, 0x0000e273,
  680.         0xffc50c00, 0x0000007b, 0xffcd0c00, 0x0000207b,
  681.         0xffd50c00, 0x0000407b, 0xffde0c00, 0x0000617b,
  682.         0xffe60c00, 0x0000817b, 0xffee0c00, 0x0000a17b,
  683.         0xfff60c00, 0x0000c27b, 0xffff0c00, 0x0000e27b,
  684.         0xff001000, 0x00000083, 0xff081000, 0x00002083,
  685.         0xff101000, 0x00004083, 0xff181000, 0x00006183,
  686.         0xff201000, 0x00008183, 0xff291000, 0x0000a183,
  687.         0xff311000, 0x0000c283, 0xff391000, 0x0000e283,
  688.         0xff411000, 0x0000008b, 0xff4a1000, 0x0000208b,
  689.         0xff521000, 0x0000408b, 0xff5a1000, 0x0000618b,
  690.         0xff621000, 0x0000818b, 0xff6a1000, 0x0000a18b,
  691.         0xff731000, 0x0000c28b, 0xff7b1000, 0x0000e28b,
  692.         0xff831000, 0x00000094, 0xff8b1000, 0x00002094,
  693.         0xff941000, 0x00004094, 0xff9c1000, 0x00006194,
  694.         0xffa41000, 0x00008194, 0xffac1000, 0x0000a194,
  695.         0xffb41000, 0x0000c294, 0xffbd1000, 0x0000e294,
  696.         0xffc51000, 0x0000009c, 0xffcd1000, 0x0000209c,
  697.         0xffd51000, 0x0000409c, 0xffde1000, 0x0000619c,
  698.         0xffe61000, 0x0000819c, 0xffee1000, 0x0000a19c,
  699.         0xfff61000, 0x0000c29c, 0xffff1000, 0x0000e29c,
  700.         0xff001400, 0x000000a4, 0xff081400, 0x000020a4,
  701.         0xff101400, 0x000040a4, 0xff181400, 0x000061a4,
  702.         0xff201400, 0x000081a4, 0xff291400, 0x0000a1a4,
  703.         0xff311400, 0x0000c2a4, 0xff391400, 0x0000e2a4,
  704.         0xff411400, 0x000000ac, 0xff4a1400, 0x000020ac,
  705.         0xff521400, 0x000040ac, 0xff5a1400, 0x000061ac,
  706.         0xff621400, 0x000081ac, 0xff6a1400, 0x0000a1ac,
  707.         0xff731400, 0x0000c2ac, 0xff7b1400, 0x0000e2ac,
  708.         0xff831400, 0x000000b4, 0xff8b1400, 0x000020b4,
  709.         0xff941400, 0x000040b4, 0xff9c1400, 0x000061b4,
  710.         0xffa41400, 0x000081b4, 0xffac1400, 0x0000a1b4,
  711.         0xffb41400, 0x0000c2b4, 0xffbd1400, 0x0000e2b4,
  712.         0xffc51400, 0x000000bd, 0xffcd1400, 0x000020bd,
  713.         0xffd51400, 0x000040bd, 0xffde1400, 0x000061bd,
  714.         0xffe61400, 0x000081bd, 0xffee1400, 0x0000a1bd,
  715.         0xfff61400, 0x0000c2bd, 0xffff1400, 0x0000e2bd,
  716.         0xff001800, 0x000000c5, 0xff081800, 0x000020c5,
  717.         0xff101800, 0x000040c5, 0xff181800, 0x000061c5,
  718.         0xff201800, 0x000081c5, 0xff291800, 0x0000a1c5,
  719.         0xff311800, 0x0000c2c5, 0xff391800, 0x0000e2c5,
  720.         0xff411800, 0x000000cd, 0xff4a1800, 0x000020cd,
  721.         0xff521800, 0x000040cd, 0xff5a1800, 0x000061cd,
  722.         0xff621800, 0x000081cd, 0xff6a1800, 0x0000a1cd,
  723.         0xff731800, 0x0000c2cd, 0xff7b1800, 0x0000e2cd,
  724.         0xff831800, 0x000000d5, 0xff8b1800, 0x000020d5,
  725.         0xff941800, 0x000040d5, 0xff9c1800, 0x000061d5,
  726.         0xffa41800, 0x000081d5, 0xffac1800, 0x0000a1d5,
  727.         0xffb41800, 0x0000c2d5, 0xffbd1800, 0x0000e2d5,
  728.         0xffc51800, 0x000000de, 0xffcd1800, 0x000020de,
  729.         0xffd51800, 0x000040de, 0xffde1800, 0x000061de,
  730.         0xffe61800, 0x000081de, 0xffee1800, 0x0000a1de,
  731.         0xfff61800, 0x0000c2de, 0xffff1800, 0x0000e2de,
  732.         0xff001c00, 0x000000e6, 0xff081c00, 0x000020e6,
  733.         0xff101c00, 0x000040e6, 0xff181c00, 0x000061e6,
  734.         0xff201c00, 0x000081e6, 0xff291c00, 0x0000a1e6,
  735.         0xff311c00, 0x0000c2e6, 0xff391c00, 0x0000e2e6,
  736.         0xff411c00, 0x000000ee, 0xff4a1c00, 0x000020ee,
  737.         0xff521c00, 0x000040ee, 0xff5a1c00, 0x000061ee,
  738.         0xff621c00, 0x000081ee, 0xff6a1c00, 0x0000a1ee,
  739.         0xff731c00, 0x0000c2ee, 0xff7b1c00, 0x0000e2ee,
  740.         0xff831c00, 0x000000f6, 0xff8b1c00, 0x000020f6,
  741.         0xff941c00, 0x000040f6, 0xff9c1c00, 0x000061f6,
  742.         0xffa41c00, 0x000081f6, 0xffac1c00, 0x0000a1f6,
  743.         0xffb41c00, 0x0000c2f6, 0xffbd1c00, 0x0000e2f6,
  744.         0xffc51c00, 0x000000ff, 0xffcd1c00, 0x000020ff,
  745.         0xffd51c00, 0x000040ff, 0xffde1c00, 0x000061ff,
  746.         0xffe61c00, 0x000081ff, 0xffee1c00, 0x0000a1ff,
  747.         0xfff61c00, 0x0000c2ff, 0xffff1c00, 0x0000e2ff
  748. };
  749. static void Blit_RGB565_ABGR8888(SDL_BlitInfo *info)
  750. {
  751.     Blit_RGB565_32(info, RGB565_ABGR8888_LUT);
  752. }
  753.  
  754. /* Special optimized blit for RGB 5-6-5 --> RGBA 8-8-8-8 */
  755. static Uint32 RGB565_RGBA8888_LUT[512] = {
  756.         0x000000ff, 0x00000000, 0x000008ff, 0x00200000,
  757.         0x000010ff, 0x00400000, 0x000018ff, 0x00610000,
  758.         0x000020ff, 0x00810000, 0x000029ff, 0x00a10000,
  759.         0x000031ff, 0x00c20000, 0x000039ff, 0x00e20000,
  760.         0x000041ff, 0x08000000, 0x00004aff, 0x08200000,
  761.         0x000052ff, 0x08400000, 0x00005aff, 0x08610000,
  762.         0x000062ff, 0x08810000, 0x00006aff, 0x08a10000,
  763.         0x000073ff, 0x08c20000, 0x00007bff, 0x08e20000,
  764.         0x000083ff, 0x10000000, 0x00008bff, 0x10200000,
  765.         0x000094ff, 0x10400000, 0x00009cff, 0x10610000,
  766.         0x0000a4ff, 0x10810000, 0x0000acff, 0x10a10000,
  767.         0x0000b4ff, 0x10c20000, 0x0000bdff, 0x10e20000,
  768.         0x0000c5ff, 0x18000000, 0x0000cdff, 0x18200000,
  769.         0x0000d5ff, 0x18400000, 0x0000deff, 0x18610000,
  770.         0x0000e6ff, 0x18810000, 0x0000eeff, 0x18a10000,
  771.         0x0000f6ff, 0x18c20000, 0x0000ffff, 0x18e20000,
  772.         0x000400ff, 0x20000000, 0x000408ff, 0x20200000,
  773.         0x000410ff, 0x20400000, 0x000418ff, 0x20610000,
  774.         0x000420ff, 0x20810000, 0x000429ff, 0x20a10000,
  775.         0x000431ff, 0x20c20000, 0x000439ff, 0x20e20000,
  776.         0x000441ff, 0x29000000, 0x00044aff, 0x29200000,
  777.         0x000452ff, 0x29400000, 0x00045aff, 0x29610000,
  778.         0x000462ff, 0x29810000, 0x00046aff, 0x29a10000,
  779.         0x000473ff, 0x29c20000, 0x00047bff, 0x29e20000,
  780.         0x000483ff, 0x31000000, 0x00048bff, 0x31200000,
  781.         0x000494ff, 0x31400000, 0x00049cff, 0x31610000,
  782.         0x0004a4ff, 0x31810000, 0x0004acff, 0x31a10000,
  783.         0x0004b4ff, 0x31c20000, 0x0004bdff, 0x31e20000,
  784.         0x0004c5ff, 0x39000000, 0x0004cdff, 0x39200000,
  785.         0x0004d5ff, 0x39400000, 0x0004deff, 0x39610000,
  786.         0x0004e6ff, 0x39810000, 0x0004eeff, 0x39a10000,
  787.         0x0004f6ff, 0x39c20000, 0x0004ffff, 0x39e20000,
  788.         0x000800ff, 0x41000000, 0x000808ff, 0x41200000,
  789.         0x000810ff, 0x41400000, 0x000818ff, 0x41610000,
  790.         0x000820ff, 0x41810000, 0x000829ff, 0x41a10000,
  791.         0x000831ff, 0x41c20000, 0x000839ff, 0x41e20000,
  792.         0x000841ff, 0x4a000000, 0x00084aff, 0x4a200000,
  793.         0x000852ff, 0x4a400000, 0x00085aff, 0x4a610000,
  794.         0x000862ff, 0x4a810000, 0x00086aff, 0x4aa10000,
  795.         0x000873ff, 0x4ac20000, 0x00087bff, 0x4ae20000,
  796.         0x000883ff, 0x52000000, 0x00088bff, 0x52200000,
  797.         0x000894ff, 0x52400000, 0x00089cff, 0x52610000,
  798.         0x0008a4ff, 0x52810000, 0x0008acff, 0x52a10000,
  799.         0x0008b4ff, 0x52c20000, 0x0008bdff, 0x52e20000,
  800.         0x0008c5ff, 0x5a000000, 0x0008cdff, 0x5a200000,
  801.         0x0008d5ff, 0x5a400000, 0x0008deff, 0x5a610000,
  802.         0x0008e6ff, 0x5a810000, 0x0008eeff, 0x5aa10000,
  803.         0x0008f6ff, 0x5ac20000, 0x0008ffff, 0x5ae20000,
  804.         0x000c00ff, 0x62000000, 0x000c08ff, 0x62200000,
  805.         0x000c10ff, 0x62400000, 0x000c18ff, 0x62610000,
  806.         0x000c20ff, 0x62810000, 0x000c29ff, 0x62a10000,
  807.         0x000c31ff, 0x62c20000, 0x000c39ff, 0x62e20000,
  808.         0x000c41ff, 0x6a000000, 0x000c4aff, 0x6a200000,
  809.         0x000c52ff, 0x6a400000, 0x000c5aff, 0x6a610000,
  810.         0x000c62ff, 0x6a810000, 0x000c6aff, 0x6aa10000,
  811.         0x000c73ff, 0x6ac20000, 0x000c7bff, 0x6ae20000,
  812.         0x000c83ff, 0x73000000, 0x000c8bff, 0x73200000,
  813.         0x000c94ff, 0x73400000, 0x000c9cff, 0x73610000,
  814.         0x000ca4ff, 0x73810000, 0x000cacff, 0x73a10000,
  815.         0x000cb4ff, 0x73c20000, 0x000cbdff, 0x73e20000,
  816.         0x000cc5ff, 0x7b000000, 0x000ccdff, 0x7b200000,
  817.         0x000cd5ff, 0x7b400000, 0x000cdeff, 0x7b610000,
  818.         0x000ce6ff, 0x7b810000, 0x000ceeff, 0x7ba10000,
  819.         0x000cf6ff, 0x7bc20000, 0x000cffff, 0x7be20000,
  820.         0x001000ff, 0x83000000, 0x001008ff, 0x83200000,
  821.         0x001010ff, 0x83400000, 0x001018ff, 0x83610000,
  822.         0x001020ff, 0x83810000, 0x001029ff, 0x83a10000,
  823.         0x001031ff, 0x83c20000, 0x001039ff, 0x83e20000,
  824.         0x001041ff, 0x8b000000, 0x00104aff, 0x8b200000,
  825.         0x001052ff, 0x8b400000, 0x00105aff, 0x8b610000,
  826.         0x001062ff, 0x8b810000, 0x00106aff, 0x8ba10000,
  827.         0x001073ff, 0x8bc20000, 0x00107bff, 0x8be20000,
  828.         0x001083ff, 0x94000000, 0x00108bff, 0x94200000,
  829.         0x001094ff, 0x94400000, 0x00109cff, 0x94610000,
  830.         0x0010a4ff, 0x94810000, 0x0010acff, 0x94a10000,
  831.         0x0010b4ff, 0x94c20000, 0x0010bdff, 0x94e20000,
  832.         0x0010c5ff, 0x9c000000, 0x0010cdff, 0x9c200000,
  833.         0x0010d5ff, 0x9c400000, 0x0010deff, 0x9c610000,
  834.         0x0010e6ff, 0x9c810000, 0x0010eeff, 0x9ca10000,
  835.         0x0010f6ff, 0x9cc20000, 0x0010ffff, 0x9ce20000,
  836.         0x001400ff, 0xa4000000, 0x001408ff, 0xa4200000,
  837.         0x001410ff, 0xa4400000, 0x001418ff, 0xa4610000,
  838.         0x001420ff, 0xa4810000, 0x001429ff, 0xa4a10000,
  839.         0x001431ff, 0xa4c20000, 0x001439ff, 0xa4e20000,
  840.         0x001441ff, 0xac000000, 0x00144aff, 0xac200000,
  841.         0x001452ff, 0xac400000, 0x00145aff, 0xac610000,
  842.         0x001462ff, 0xac810000, 0x00146aff, 0xaca10000,
  843.         0x001473ff, 0xacc20000, 0x00147bff, 0xace20000,
  844.         0x001483ff, 0xb4000000, 0x00148bff, 0xb4200000,
  845.         0x001494ff, 0xb4400000, 0x00149cff, 0xb4610000,
  846.         0x0014a4ff, 0xb4810000, 0x0014acff, 0xb4a10000,
  847.         0x0014b4ff, 0xb4c20000, 0x0014bdff, 0xb4e20000,
  848.         0x0014c5ff, 0xbd000000, 0x0014cdff, 0xbd200000,
  849.         0x0014d5ff, 0xbd400000, 0x0014deff, 0xbd610000,
  850.         0x0014e6ff, 0xbd810000, 0x0014eeff, 0xbda10000,
  851.         0x0014f6ff, 0xbdc20000, 0x0014ffff, 0xbde20000,
  852.         0x001800ff, 0xc5000000, 0x001808ff, 0xc5200000,
  853.         0x001810ff, 0xc5400000, 0x001818ff, 0xc5610000,
  854.         0x001820ff, 0xc5810000, 0x001829ff, 0xc5a10000,
  855.         0x001831ff, 0xc5c20000, 0x001839ff, 0xc5e20000,
  856.         0x001841ff, 0xcd000000, 0x00184aff, 0xcd200000,
  857.         0x001852ff, 0xcd400000, 0x00185aff, 0xcd610000,
  858.         0x001862ff, 0xcd810000, 0x00186aff, 0xcda10000,
  859.         0x001873ff, 0xcdc20000, 0x00187bff, 0xcde20000,
  860.         0x001883ff, 0xd5000000, 0x00188bff, 0xd5200000,
  861.         0x001894ff, 0xd5400000, 0x00189cff, 0xd5610000,
  862.         0x0018a4ff, 0xd5810000, 0x0018acff, 0xd5a10000,
  863.         0x0018b4ff, 0xd5c20000, 0x0018bdff, 0xd5e20000,
  864.         0x0018c5ff, 0xde000000, 0x0018cdff, 0xde200000,
  865.         0x0018d5ff, 0xde400000, 0x0018deff, 0xde610000,
  866.         0x0018e6ff, 0xde810000, 0x0018eeff, 0xdea10000,
  867.         0x0018f6ff, 0xdec20000, 0x0018ffff, 0xdee20000,
  868.         0x001c00ff, 0xe6000000, 0x001c08ff, 0xe6200000,
  869.         0x001c10ff, 0xe6400000, 0x001c18ff, 0xe6610000,
  870.         0x001c20ff, 0xe6810000, 0x001c29ff, 0xe6a10000,
  871.         0x001c31ff, 0xe6c20000, 0x001c39ff, 0xe6e20000,
  872.         0x001c41ff, 0xee000000, 0x001c4aff, 0xee200000,
  873.         0x001c52ff, 0xee400000, 0x001c5aff, 0xee610000,
  874.         0x001c62ff, 0xee810000, 0x001c6aff, 0xeea10000,
  875.         0x001c73ff, 0xeec20000, 0x001c7bff, 0xeee20000,
  876.         0x001c83ff, 0xf6000000, 0x001c8bff, 0xf6200000,
  877.         0x001c94ff, 0xf6400000, 0x001c9cff, 0xf6610000,
  878.         0x001ca4ff, 0xf6810000, 0x001cacff, 0xf6a10000,
  879.         0x001cb4ff, 0xf6c20000, 0x001cbdff, 0xf6e20000,
  880.         0x001cc5ff, 0xff000000, 0x001ccdff, 0xff200000,
  881.         0x001cd5ff, 0xff400000, 0x001cdeff, 0xff610000,
  882.         0x001ce6ff, 0xff810000, 0x001ceeff, 0xffa10000,
  883.         0x001cf6ff, 0xffc20000, 0x001cffff, 0xffe20000,
  884. };
  885. static void Blit_RGB565_RGBA8888(SDL_BlitInfo *info)
  886. {
  887.     Blit_RGB565_32(info, RGB565_RGBA8888_LUT);
  888. }
  889.  
  890. /* Special optimized blit for RGB 5-6-5 --> BGRA 8-8-8-8 */
  891. static Uint32 RGB565_BGRA8888_LUT[512] = {
  892.         0x00000000, 0x000000ff, 0x08000000, 0x002000ff,
  893.         0x10000000, 0x004000ff, 0x18000000, 0x006100ff,
  894.         0x20000000, 0x008100ff, 0x29000000, 0x00a100ff,
  895.         0x31000000, 0x00c200ff, 0x39000000, 0x00e200ff,
  896.         0x41000000, 0x000008ff, 0x4a000000, 0x002008ff,
  897.         0x52000000, 0x004008ff, 0x5a000000, 0x006108ff,
  898.         0x62000000, 0x008108ff, 0x6a000000, 0x00a108ff,
  899.         0x73000000, 0x00c208ff, 0x7b000000, 0x00e208ff,
  900.         0x83000000, 0x000010ff, 0x8b000000, 0x002010ff,
  901.         0x94000000, 0x004010ff, 0x9c000000, 0x006110ff,
  902.         0xa4000000, 0x008110ff, 0xac000000, 0x00a110ff,
  903.         0xb4000000, 0x00c210ff, 0xbd000000, 0x00e210ff,
  904.         0xc5000000, 0x000018ff, 0xcd000000, 0x002018ff,
  905.         0xd5000000, 0x004018ff, 0xde000000, 0x006118ff,
  906.         0xe6000000, 0x008118ff, 0xee000000, 0x00a118ff,
  907.         0xf6000000, 0x00c218ff, 0xff000000, 0x00e218ff,
  908.         0x00040000, 0x000020ff, 0x08040000, 0x002020ff,
  909.         0x10040000, 0x004020ff, 0x18040000, 0x006120ff,
  910.         0x20040000, 0x008120ff, 0x29040000, 0x00a120ff,
  911.         0x31040000, 0x00c220ff, 0x39040000, 0x00e220ff,
  912.         0x41040000, 0x000029ff, 0x4a040000, 0x002029ff,
  913.         0x52040000, 0x004029ff, 0x5a040000, 0x006129ff,
  914.         0x62040000, 0x008129ff, 0x6a040000, 0x00a129ff,
  915.         0x73040000, 0x00c229ff, 0x7b040000, 0x00e229ff,
  916.         0x83040000, 0x000031ff, 0x8b040000, 0x002031ff,
  917.         0x94040000, 0x004031ff, 0x9c040000, 0x006131ff,
  918.         0xa4040000, 0x008131ff, 0xac040000, 0x00a131ff,
  919.         0xb4040000, 0x00c231ff, 0xbd040000, 0x00e231ff,
  920.         0xc5040000, 0x000039ff, 0xcd040000, 0x002039ff,
  921.         0xd5040000, 0x004039ff, 0xde040000, 0x006139ff,
  922.         0xe6040000, 0x008139ff, 0xee040000, 0x00a139ff,
  923.         0xf6040000, 0x00c239ff, 0xff040000, 0x00e239ff,
  924.         0x00080000, 0x000041ff, 0x08080000, 0x002041ff,
  925.         0x10080000, 0x004041ff, 0x18080000, 0x006141ff,
  926.         0x20080000, 0x008141ff, 0x29080000, 0x00a141ff,
  927.         0x31080000, 0x00c241ff, 0x39080000, 0x00e241ff,
  928.         0x41080000, 0x00004aff, 0x4a080000, 0x00204aff,
  929.         0x52080000, 0x00404aff, 0x5a080000, 0x00614aff,
  930.         0x62080000, 0x00814aff, 0x6a080000, 0x00a14aff,
  931.         0x73080000, 0x00c24aff, 0x7b080000, 0x00e24aff,
  932.         0x83080000, 0x000052ff, 0x8b080000, 0x002052ff,
  933.         0x94080000, 0x004052ff, 0x9c080000, 0x006152ff,
  934.         0xa4080000, 0x008152ff, 0xac080000, 0x00a152ff,
  935.         0xb4080000, 0x00c252ff, 0xbd080000, 0x00e252ff,
  936.         0xc5080000, 0x00005aff, 0xcd080000, 0x00205aff,
  937.         0xd5080000, 0x00405aff, 0xde080000, 0x00615aff,
  938.         0xe6080000, 0x00815aff, 0xee080000, 0x00a15aff,
  939.         0xf6080000, 0x00c25aff, 0xff080000, 0x00e25aff,
  940.         0x000c0000, 0x000062ff, 0x080c0000, 0x002062ff,
  941.         0x100c0000, 0x004062ff, 0x180c0000, 0x006162ff,
  942.         0x200c0000, 0x008162ff, 0x290c0000, 0x00a162ff,
  943.         0x310c0000, 0x00c262ff, 0x390c0000, 0x00e262ff,
  944.         0x410c0000, 0x00006aff, 0x4a0c0000, 0x00206aff,
  945.         0x520c0000, 0x00406aff, 0x5a0c0000, 0x00616aff,
  946.         0x620c0000, 0x00816aff, 0x6a0c0000, 0x00a16aff,
  947.         0x730c0000, 0x00c26aff, 0x7b0c0000, 0x00e26aff,
  948.         0x830c0000, 0x000073ff, 0x8b0c0000, 0x002073ff,
  949.         0x940c0000, 0x004073ff, 0x9c0c0000, 0x006173ff,
  950.         0xa40c0000, 0x008173ff, 0xac0c0000, 0x00a173ff,
  951.         0xb40c0000, 0x00c273ff, 0xbd0c0000, 0x00e273ff,
  952.         0xc50c0000, 0x00007bff, 0xcd0c0000, 0x00207bff,
  953.         0xd50c0000, 0x00407bff, 0xde0c0000, 0x00617bff,
  954.         0xe60c0000, 0x00817bff, 0xee0c0000, 0x00a17bff,
  955.         0xf60c0000, 0x00c27bff, 0xff0c0000, 0x00e27bff,
  956.         0x00100000, 0x000083ff, 0x08100000, 0x002083ff,
  957.         0x10100000, 0x004083ff, 0x18100000, 0x006183ff,
  958.         0x20100000, 0x008183ff, 0x29100000, 0x00a183ff,
  959.         0x31100000, 0x00c283ff, 0x39100000, 0x00e283ff,
  960.         0x41100000, 0x00008bff, 0x4a100000, 0x00208bff,
  961.         0x52100000, 0x00408bff, 0x5a100000, 0x00618bff,
  962.         0x62100000, 0x00818bff, 0x6a100000, 0x00a18bff,
  963.         0x73100000, 0x00c28bff, 0x7b100000, 0x00e28bff,
  964.         0x83100000, 0x000094ff, 0x8b100000, 0x002094ff,
  965.         0x94100000, 0x004094ff, 0x9c100000, 0x006194ff,
  966.         0xa4100000, 0x008194ff, 0xac100000, 0x00a194ff,
  967.         0xb4100000, 0x00c294ff, 0xbd100000, 0x00e294ff,
  968.         0xc5100000, 0x00009cff, 0xcd100000, 0x00209cff,
  969.         0xd5100000, 0x00409cff, 0xde100000, 0x00619cff,
  970.         0xe6100000, 0x00819cff, 0xee100000, 0x00a19cff,
  971.         0xf6100000, 0x00c29cff, 0xff100000, 0x00e29cff,
  972.         0x00140000, 0x0000a4ff, 0x08140000, 0x0020a4ff,
  973.         0x10140000, 0x0040a4ff, 0x18140000, 0x0061a4ff,
  974.         0x20140000, 0x0081a4ff, 0x29140000, 0x00a1a4ff,
  975.         0x31140000, 0x00c2a4ff, 0x39140000, 0x00e2a4ff,
  976.         0x41140000, 0x0000acff, 0x4a140000, 0x0020acff,
  977.         0x52140000, 0x0040acff, 0x5a140000, 0x0061acff,
  978.         0x62140000, 0x0081acff, 0x6a140000, 0x00a1acff,
  979.         0x73140000, 0x00c2acff, 0x7b140000, 0x00e2acff,
  980.         0x83140000, 0x0000b4ff, 0x8b140000, 0x0020b4ff,
  981.         0x94140000, 0x0040b4ff, 0x9c140000, 0x0061b4ff,
  982.         0xa4140000, 0x0081b4ff, 0xac140000, 0x00a1b4ff,
  983.         0xb4140000, 0x00c2b4ff, 0xbd140000, 0x00e2b4ff,
  984.         0xc5140000, 0x0000bdff, 0xcd140000, 0x0020bdff,
  985.         0xd5140000, 0x0040bdff, 0xde140000, 0x0061bdff,
  986.         0xe6140000, 0x0081bdff, 0xee140000, 0x00a1bdff,
  987.         0xf6140000, 0x00c2bdff, 0xff140000, 0x00e2bdff,
  988.         0x00180000, 0x0000c5ff, 0x08180000, 0x0020c5ff,
  989.         0x10180000, 0x0040c5ff, 0x18180000, 0x0061c5ff,
  990.         0x20180000, 0x0081c5ff, 0x29180000, 0x00a1c5ff,
  991.         0x31180000, 0x00c2c5ff, 0x39180000, 0x00e2c5ff,
  992.         0x41180000, 0x0000cdff, 0x4a180000, 0x0020cdff,
  993.         0x52180000, 0x0040cdff, 0x5a180000, 0x0061cdff,
  994.         0x62180000, 0x0081cdff, 0x6a180000, 0x00a1cdff,
  995.         0x73180000, 0x00c2cdff, 0x7b180000, 0x00e2cdff,
  996.         0x83180000, 0x0000d5ff, 0x8b180000, 0x0020d5ff,
  997.         0x94180000, 0x0040d5ff, 0x9c180000, 0x0061d5ff,
  998.         0xa4180000, 0x0081d5ff, 0xac180000, 0x00a1d5ff,
  999.         0xb4180000, 0x00c2d5ff, 0xbd180000, 0x00e2d5ff,
  1000.         0xc5180000, 0x0000deff, 0xcd180000, 0x0020deff,
  1001.         0xd5180000, 0x0040deff, 0xde180000, 0x0061deff,
  1002.         0xe6180000, 0x0081deff, 0xee180000, 0x00a1deff,
  1003.         0xf6180000, 0x00c2deff, 0xff180000, 0x00e2deff,
  1004.         0x001c0000, 0x0000e6ff, 0x081c0000, 0x0020e6ff,
  1005.         0x101c0000, 0x0040e6ff, 0x181c0000, 0x0061e6ff,
  1006.         0x201c0000, 0x0081e6ff, 0x291c0000, 0x00a1e6ff,
  1007.         0x311c0000, 0x00c2e6ff, 0x391c0000, 0x00e2e6ff,
  1008.         0x411c0000, 0x0000eeff, 0x4a1c0000, 0x0020eeff,
  1009.         0x521c0000, 0x0040eeff, 0x5a1c0000, 0x0061eeff,
  1010.         0x621c0000, 0x0081eeff, 0x6a1c0000, 0x00a1eeff,
  1011.         0x731c0000, 0x00c2eeff, 0x7b1c0000, 0x00e2eeff,
  1012.         0x831c0000, 0x0000f6ff, 0x8b1c0000, 0x0020f6ff,
  1013.         0x941c0000, 0x0040f6ff, 0x9c1c0000, 0x0061f6ff,
  1014.         0xa41c0000, 0x0081f6ff, 0xac1c0000, 0x00a1f6ff,
  1015.         0xb41c0000, 0x00c2f6ff, 0xbd1c0000, 0x00e2f6ff,
  1016.         0xc51c0000, 0x0000ffff, 0xcd1c0000, 0x0020ffff,
  1017.         0xd51c0000, 0x0040ffff, 0xde1c0000, 0x0061ffff,
  1018.         0xe61c0000, 0x0081ffff, 0xee1c0000, 0x00a1ffff,
  1019.         0xf61c0000, 0x00c2ffff, 0xff1c0000, 0x00e2ffff
  1020. };
  1021. static void Blit_RGB565_BGRA8888(SDL_BlitInfo *info)
  1022. {
  1023.     Blit_RGB565_32(info, RGB565_BGRA8888_LUT);
  1024. }
  1025.  
  1026. /* Special optimized blit for RGB 8-8-8 --> RGB 3-3-2 */
  1027. #ifndef RGB888_RGB332
  1028. #define RGB888_RGB332(dst, src) { \
  1029.     dst = (((src)&0x00E00000)>>16)| \
  1030.           (((src)&0x0000E000)>>11)| \
  1031.           (((src)&0x000000C0)>>6); \
  1032. }
  1033. #endif
  1034. static void Blit_RGB888_index8_map(SDL_BlitInfo *info)
  1035. {
  1036. #ifndef USE_DUFFS_LOOP
  1037.     int c;
  1038. #endif
  1039.     int pixel;
  1040.     int width, height;
  1041.     Uint32 *src;
  1042.     Uint8 *map, *dst;
  1043.     int srcskip, dstskip;
  1044.  
  1045.     /* Set up some basic variables */
  1046.     width = info->d_width;
  1047.     height = info->d_height;
  1048.     src = (Uint32 *)info->s_pixels;
  1049.     srcskip = info->s_skip/4;
  1050.     dst = info->d_pixels;
  1051.     dstskip = info->d_skip;
  1052.     map = info->table;
  1053.  
  1054. #ifdef USE_DUFFS_LOOP
  1055.     while ( height-- ) {
  1056.         DUFFS_LOOP(
  1057.             RGB888_RGB332(pixel, *src);
  1058.             *dst++ = map[pixel];
  1059.             ++src;
  1060.         , width);
  1061.         src += srcskip;
  1062.         dst += dstskip;
  1063.     }
  1064. #else
  1065.     while ( height-- ) {
  1066.         for ( c=width/4; c; --c ) {
  1067.             /* Pack RGB into 8bit pixel */
  1068.             RGB888_RGB332(pixel, *src);
  1069.             *dst++ = map[pixel];
  1070.             ++src;
  1071.             RGB888_RGB332(pixel, *src);
  1072.             *dst++ = map[pixel];
  1073.             ++src;
  1074.             RGB888_RGB332(pixel, *src);
  1075.             *dst++ = map[pixel];
  1076.             ++src;
  1077.             RGB888_RGB332(pixel, *src);
  1078.             *dst++ = map[pixel];
  1079.             ++src;
  1080.         }
  1081.         switch ( width % 4 ) {
  1082.             case 3:
  1083.                 RGB888_RGB332(pixel, *src);
  1084.                 *dst++ = map[pixel];
  1085.                 ++src;
  1086.             case 2:
  1087.                 RGB888_RGB332(pixel, *src);
  1088.                 *dst++ = map[pixel];
  1089.                 ++src;
  1090.             case 1:
  1091.                 RGB888_RGB332(pixel, *src);
  1092.                 *dst++ = map[pixel];
  1093.                 ++src;
  1094.         }
  1095.         src += srcskip;
  1096.         dst += dstskip;
  1097.     }
  1098. #endif /* USE_DUFFS_LOOP */
  1099. }
  1100. static void BlitNto1(SDL_BlitInfo *info)
  1101. {
  1102. #ifndef USE_DUFFS_LOOP
  1103.     int c;
  1104. #endif
  1105.     int width, height;
  1106.     Uint8 *src, *map, *dst;
  1107.     int srcskip, dstskip;
  1108.     int srcbpp;
  1109.     Uint32 pixel;
  1110.     int  sR, sG, sB;
  1111.     SDL_PixelFormat *srcfmt;
  1112.  
  1113.     /* Set up some basic variables */
  1114.     width = info->d_width;
  1115.     height = info->d_height;
  1116.     src = info->s_pixels;
  1117.     srcskip = info->s_skip;
  1118.     dst = info->d_pixels;
  1119.     dstskip = info->d_skip;
  1120.     map = info->table;
  1121.     srcfmt = info->src;
  1122.     srcbpp = srcfmt->BytesPerPixel;
  1123.  
  1124.     if ( map == NULL ) {
  1125.         while ( height-- ) {
  1126. #ifdef USE_DUFFS_LOOP
  1127.             DUFFS_LOOP(
  1128.                 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
  1129.                                 sR, sG, sB);
  1130.                 if ( 1 ) {
  1131.                       /* Pack RGB into 8bit pixel */
  1132.                       *dst = ((sR>>5)<<(3+2))|
  1133.                             ((sG>>5)<<(2)) |
  1134.                             ((sB>>6)<<(0)) ;
  1135.                 }
  1136.                 dst++;
  1137.                 src += srcbpp;
  1138.             , width);
  1139. #else
  1140.             for ( c=width; c; --c ) {
  1141.                 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
  1142.                                 sR, sG, sB);
  1143.                 if ( 1 ) {
  1144.                       /* Pack RGB into 8bit pixel */
  1145.                       *dst = ((sR>>5)<<(3+2))|
  1146.                             ((sG>>5)<<(2)) |
  1147.                             ((sB>>6)<<(0)) ;
  1148.                 }
  1149.                 dst++;
  1150.                 src += srcbpp;
  1151.             }
  1152. #endif
  1153.             src += srcskip;
  1154.             dst += dstskip;
  1155.         }
  1156.     } else {
  1157.         while ( height-- ) {
  1158. #ifdef USE_DUFFS_LOOP
  1159.             DUFFS_LOOP(
  1160.                 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
  1161.                                 sR, sG, sB);
  1162.                 if ( 1 ) {
  1163.                       /* Pack RGB into 8bit pixel */
  1164.                       *dst = map[((sR>>5)<<(3+2))|
  1165.                            ((sG>>5)<<(2))  |
  1166.                            ((sB>>6)<<(0))  ];
  1167.                 }
  1168.                 dst++;
  1169.                 src += srcbpp;
  1170.             , width);
  1171. #else
  1172.             for ( c=width; c; --c ) {
  1173.                 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
  1174.                                 sR, sG, sB);
  1175.                 if ( 1 ) {
  1176.                       /* Pack RGB into 8bit pixel */
  1177.                       *dst = map[((sR>>5)<<(3+2))|
  1178.                            ((sG>>5)<<(2))  |
  1179.                            ((sB>>6)<<(0))  ];
  1180.                 }
  1181.                 dst++;
  1182.                 src += srcbpp;
  1183.             }
  1184. #endif /* USE_DUFFS_LOOP */
  1185.             src += srcskip;
  1186.             dst += dstskip;
  1187.         }
  1188.     }
  1189. }
  1190. static void BlitNtoN(SDL_BlitInfo *info)
  1191. {
  1192.     int width = info->d_width;
  1193.     int height = info->d_height;
  1194.     Uint8 *src = info->s_pixels;
  1195.     int srcskip = info->s_skip;
  1196.     Uint8 *dst = info->d_pixels;
  1197.     int dstskip = info->d_skip;
  1198.     SDL_PixelFormat *srcfmt = info->src;
  1199.     int srcbpp = srcfmt->BytesPerPixel;
  1200.     SDL_PixelFormat *dstfmt = info->dst;
  1201.     int dstbpp = dstfmt->BytesPerPixel;
  1202.     unsigned alpha = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0;
  1203.  
  1204.     while ( height-- ) {
  1205.         DUFFS_LOOP(
  1206.         {
  1207.                 Uint32 pixel;
  1208.             unsigned sR;
  1209.             unsigned sG;
  1210.             unsigned sB;
  1211.             DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB);
  1212.             ASSEMBLE_RGBA(dst, dstbpp, dstfmt, sR, sG, sB, alpha);
  1213.             dst += dstbpp;
  1214.             src += srcbpp;
  1215.         },
  1216.         width);
  1217.         src += srcskip;
  1218.         dst += dstskip;
  1219.     }
  1220. }
  1221.  
  1222. static void BlitNtoNCopyAlpha(SDL_BlitInfo *info)
  1223. {
  1224.     int width = info->d_width;
  1225.     int height = info->d_height;
  1226.     Uint8 *src = info->s_pixels;
  1227.     int srcskip = info->s_skip;
  1228.     Uint8 *dst = info->d_pixels;
  1229.     int dstskip = info->d_skip;
  1230.     SDL_PixelFormat *srcfmt = info->src;
  1231.     int srcbpp = srcfmt->BytesPerPixel;
  1232.     SDL_PixelFormat *dstfmt = info->dst;
  1233.     int dstbpp = dstfmt->BytesPerPixel;
  1234.     int c;
  1235.  
  1236.     /* FIXME: should map alpha to [0..255] correctly! */
  1237.     while ( height-- ) {
  1238.         for ( c=width; c; --c ) {
  1239.                 Uint32 pixel;
  1240.             unsigned sR, sG, sB, sA;
  1241.             DISEMBLE_RGBA(src, srcbpp, srcfmt, pixel,
  1242.                       sR, sG, sB, sA);
  1243.             ASSEMBLE_RGBA(dst, dstbpp, dstfmt,
  1244.                       sR, sG, sB, sA);
  1245.             dst += dstbpp;
  1246.             src += srcbpp;
  1247.         }
  1248.         src += srcskip;
  1249.         dst += dstskip;
  1250.     }
  1251. }
  1252.  
  1253. static void BlitNto1Key(SDL_BlitInfo *info)
  1254. {
  1255.     int width = info->d_width;
  1256.     int height = info->d_height;
  1257.     Uint8 *src = info->s_pixels;
  1258.     int srcskip = info->s_skip;
  1259.     Uint8 *dst = info->d_pixels;
  1260.     int dstskip = info->d_skip;
  1261.     SDL_PixelFormat *srcfmt = info->src;
  1262.     Uint8 *palmap = info->table;
  1263.     Uint32 ckey = srcfmt->colorkey;
  1264.     Uint32 rgbmask = ~srcfmt->Amask;
  1265.     int srcbpp;
  1266.     Uint32 pixel;
  1267.     Uint8  sR, sG, sB;
  1268.  
  1269.     /* Set up some basic variables */
  1270.     srcbpp = srcfmt->BytesPerPixel;
  1271.     ckey &= rgbmask;
  1272.  
  1273.     if ( palmap == NULL ) {
  1274.         while ( height-- ) {
  1275.             DUFFS_LOOP(
  1276.             {
  1277.                 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
  1278.                                 sR, sG, sB);
  1279.                 if ( (pixel & rgbmask) != ckey ) {
  1280.                       /* Pack RGB into 8bit pixel */
  1281.                       *dst = ((sR>>5)<<(3+2))|
  1282.                         ((sG>>5)<<(2)) |
  1283.                         ((sB>>6)<<(0)) ;
  1284.                 }
  1285.                 dst++;
  1286.                 src += srcbpp;
  1287.             },
  1288.             width);
  1289.             src += srcskip;
  1290.             dst += dstskip;
  1291.         }
  1292.     } else {
  1293.         while ( height-- ) {
  1294.             DUFFS_LOOP(
  1295.             {
  1296.                 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel,
  1297.                                 sR, sG, sB);
  1298.                 if ( (pixel & rgbmask) != ckey ) {
  1299.                       /* Pack RGB into 8bit pixel */
  1300.                       *dst = palmap[((sR>>5)<<(3+2))|
  1301.                             ((sG>>5)<<(2))  |
  1302.                             ((sB>>6)<<(0))  ];
  1303.                 }
  1304.                 dst++;
  1305.                 src += srcbpp;
  1306.             },
  1307.             width);
  1308.             src += srcskip;
  1309.             dst += dstskip;
  1310.         }
  1311.     }
  1312. }
  1313.  
  1314. static void Blit2to2Key(SDL_BlitInfo *info)
  1315. {
  1316.     int width = info->d_width;
  1317.     int height = info->d_height;
  1318.     Uint16 *srcp = (Uint16 *)info->s_pixels;
  1319.     int srcskip = info->s_skip;
  1320.     Uint16 *dstp = (Uint16 *)info->d_pixels;
  1321.     int dstskip = info->d_skip;
  1322.     Uint32 ckey = info->src->colorkey;
  1323.     Uint32 rgbmask = ~info->src->Amask;
  1324.  
  1325.     /* Set up some basic variables */
  1326.         srcskip /= 2;
  1327.         dstskip /= 2;
  1328.     ckey &= rgbmask;
  1329.  
  1330.     while ( height-- ) {
  1331.         DUFFS_LOOP(
  1332.         {
  1333.             if ( (*srcp & rgbmask) != ckey ) {
  1334.                 *dstp = *srcp;
  1335.             }
  1336.             dstp++;
  1337.             srcp++;
  1338.         },
  1339.         width);
  1340.         srcp += srcskip;
  1341.         dstp += dstskip;
  1342.     }
  1343. }
  1344.  
  1345. static void BlitNtoNKey(SDL_BlitInfo *info)
  1346. {
  1347.     int width = info->d_width;
  1348.     int height = info->d_height;
  1349.     Uint8 *src = info->s_pixels;
  1350.     int srcskip = info->s_skip;
  1351.     Uint8 *dst = info->d_pixels;
  1352.     int dstskip = info->d_skip;
  1353.     Uint32 ckey = info->src->colorkey;
  1354.     SDL_PixelFormat *srcfmt = info->src;
  1355.     SDL_PixelFormat *dstfmt = info->dst;
  1356.     int srcbpp = srcfmt->BytesPerPixel;
  1357.     int dstbpp = dstfmt->BytesPerPixel;
  1358.     unsigned alpha = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0;
  1359.  
  1360.     while ( height-- ) {
  1361.         DUFFS_LOOP(
  1362.         {
  1363.                 Uint32 pixel;
  1364.             unsigned sR;
  1365.             unsigned sG;
  1366.             unsigned sB;
  1367.             RETRIEVE_RGB_PIXEL(src, srcbpp, pixel);
  1368.             if ( pixel != ckey ) {
  1369.                     RGB_FROM_PIXEL(pixel, srcfmt, sR, sG, sB);
  1370.                 ASSEMBLE_RGBA(dst, dstbpp, dstfmt,
  1371.                           sR, sG, sB, alpha);
  1372.             }
  1373.             dst += dstbpp;
  1374.             src += srcbpp;
  1375.         },
  1376.         width);
  1377.         src += srcskip;
  1378.         dst += dstskip;
  1379.     }
  1380. }
  1381.  
  1382. static void BlitNtoNKeyCopyAlpha(SDL_BlitInfo *info)
  1383. {
  1384.     int width = info->d_width;
  1385.     int height = info->d_height;
  1386.     Uint8 *src = info->s_pixels;
  1387.     int srcskip = info->s_skip;
  1388.     Uint8 *dst = info->d_pixels;
  1389.     int dstskip = info->d_skip;
  1390.     Uint32 ckey = info->src->colorkey;
  1391.     SDL_PixelFormat *srcfmt = info->src;
  1392.     SDL_PixelFormat *dstfmt = info->dst;
  1393.     Uint32 rgbmask = ~srcfmt->Amask;
  1394.  
  1395.     Uint8 srcbpp;
  1396.     Uint8 dstbpp;
  1397.     Uint32 pixel;
  1398.     Uint8  sR, sG, sB, sA;
  1399.  
  1400.     /* Set up some basic variables */
  1401.     srcbpp = srcfmt->BytesPerPixel;
  1402.     dstbpp = dstfmt->BytesPerPixel;
  1403.     ckey &= rgbmask;
  1404.  
  1405.     /* FIXME: should map alpha to [0..255] correctly! */
  1406.     while ( height-- ) {
  1407.         DUFFS_LOOP(
  1408.         {
  1409.             DISEMBLE_RGBA(src, srcbpp, srcfmt, pixel,
  1410.                       sR, sG, sB, sA);
  1411.             if ( (pixel & rgbmask) != ckey ) {
  1412.                   ASSEMBLE_RGBA(dst, dstbpp, dstfmt,
  1413.                         sR, sG, sB, sA);
  1414.             }
  1415.             dst += dstbpp;
  1416.             src += srcbpp;
  1417.         },
  1418.         width);
  1419.         src += srcskip;
  1420.         dst += dstskip;
  1421.     }
  1422. }
  1423.  
  1424. /* Normal N to N optimized blitters */
  1425. struct blit_table {
  1426.     Uint32 srcR, srcG, srcB;
  1427.     int dstbpp;
  1428.     Uint32 dstR, dstG, dstB;
  1429.     Uint32 cpu_flags;
  1430.     void *aux_data;
  1431.     SDL_loblit blitfunc;
  1432.         enum { NO_ALPHA, SET_ALPHA, COPY_ALPHA } alpha;
  1433. };
  1434. static struct blit_table normal_blit_1[] = {
  1435.     /* Default for 8-bit RGB source, an invalid combination */
  1436.     { 0,0,0, 0, 0,0,0, 0, NULL, NULL },
  1437. };
  1438. static struct blit_table normal_blit_2[] = {
  1439. #ifdef USE_ASMBLIT
  1440.     { 0x0000F800,0x000007E0,0x0000001F, 2, 0x0000001F,0x000007E0,0x0000F800,
  1441.       0, ConvertX86p16_16BGR565, ConvertX86, NO_ALPHA },
  1442.     { 0x0000F800,0x000007E0,0x0000001F, 2, 0x00007C00,0x000003E0,0x0000001F,
  1443.       0, ConvertX86p16_16RGB555, ConvertX86, NO_ALPHA },
  1444.     { 0x0000F800,0x000007E0,0x0000001F, 2, 0x0000001F,0x000003E0,0x00007C00,
  1445.       0, ConvertX86p16_16BGR555, ConvertX86, NO_ALPHA },
  1446. #endif
  1447.     { 0x0000F800,0x000007E0,0x0000001F, 4, 0x00FF0000,0x0000FF00,0x000000FF,
  1448.       0, NULL, Blit_RGB565_ARGB8888, SET_ALPHA },
  1449.     { 0x0000F800,0x000007E0,0x0000001F, 4, 0x000000FF,0x0000FF00,0x00FF0000,
  1450.       0, NULL, Blit_RGB565_ABGR8888, SET_ALPHA },
  1451.     { 0x0000F800,0x000007E0,0x0000001F, 4, 0xFF000000,0x00FF0000,0x0000FF00,
  1452.       0, NULL, Blit_RGB565_RGBA8888, SET_ALPHA },
  1453.     { 0x0000F800,0x000007E0,0x0000001F, 4, 0x0000FF00,0x00FF0000,0xFF000000,
  1454.       0, NULL, Blit_RGB565_BGRA8888, SET_ALPHA },
  1455.  
  1456.     /* Default for 16-bit RGB source, used if no other blitter matches */
  1457.     { 0,0,0, 0, 0,0,0, 0, NULL, BlitNtoN, 0 }
  1458. };
  1459. static struct blit_table normal_blit_3[] = {
  1460.     /* Default for 24-bit RGB source, never optimized */
  1461.     { 0,0,0, 0, 0,0,0, 0, NULL, BlitNtoN, 0 }
  1462. };
  1463. static struct blit_table normal_blit_4[] = {
  1464. #ifdef USE_ASMBLIT
  1465.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000F800,0x000007E0,0x0000001F,
  1466.       MMX_CPU, ConvertMMXpII32_16RGB565, ConvertMMX, NO_ALPHA },
  1467.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000F800,0x000007E0,0x0000001F,
  1468.       0, ConvertX86p32_16RGB565, ConvertX86, NO_ALPHA },
  1469.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000001F,0x000007E0,0x0000F800,
  1470.       MMX_CPU, ConvertMMXpII32_16BGR565, ConvertMMX, NO_ALPHA },
  1471.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000001F,0x000007E0,0x0000F800,
  1472.       0, ConvertX86p32_16BGR565, ConvertX86, NO_ALPHA },
  1473.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x00007C00,0x000003E0,0x0000001F,
  1474.       MMX_CPU, ConvertMMXpII32_16RGB555, ConvertMMX, NO_ALPHA },
  1475.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x00007C00,0x000003E0,0x0000001F,
  1476.       0, ConvertX86p32_16RGB555, ConvertX86, NO_ALPHA },
  1477.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000001F,0x000003E0,0x00007C00,
  1478.       MMX_CPU, ConvertMMXpII32_16BGR555, ConvertMMX, NO_ALPHA },
  1479.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000001F,0x000003E0,0x00007C00,
  1480.       0, ConvertX86p32_16BGR555, ConvertX86, NO_ALPHA },
  1481.     { 0x00FF0000,0x0000FF00,0x000000FF, 3, 0x00FF0000,0x0000FF00,0x000000FF,
  1482.       0, ConvertX86p32_24RGB888, ConvertX86, NO_ALPHA },
  1483.     { 0x00FF0000,0x0000FF00,0x000000FF, 3, 0x000000FF,0x0000FF00,0x00FF0000,
  1484.       0, ConvertX86p32_24BGR888, ConvertX86, NO_ALPHA },
  1485.     { 0x00FF0000,0x0000FF00,0x000000FF, 4, 0x000000FF,0x0000FF00,0x00FF0000,
  1486.       0, ConvertX86p32_32BGR888, ConvertX86, NO_ALPHA },
  1487.     { 0x00FF0000,0x0000FF00,0x000000FF, 4, 0xFF000000,0x00FF0000,0x0000FF00,
  1488.       0, ConvertX86p32_32RGBA888, ConvertX86, NO_ALPHA },
  1489.     { 0x00FF0000,0x0000FF00,0x000000FF, 4, 0x0000FF00,0x00FF0000,0xFF000000,
  1490.       0, ConvertX86p32_32BGRA888, ConvertX86, NO_ALPHA },
  1491. #else
  1492.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x0000F800,0x000007E0,0x0000001F,
  1493.       0, NULL, Blit_RGB888_RGB565, NO_ALPHA },
  1494.     { 0x00FF0000,0x0000FF00,0x000000FF, 2, 0x00007C00,0x000003E0,0x0000001F,
  1495.       0, NULL, Blit_RGB888_RGB555, NO_ALPHA },
  1496. #endif
  1497.     /* Default for 32-bit RGB source, used if no other blitter matches */
  1498.     { 0,0,0, 0, 0,0,0, 0, NULL, BlitNtoN, 0 }
  1499. };
  1500. static struct blit_table *normal_blit[] = {
  1501.     normal_blit_1, normal_blit_2, normal_blit_3, normal_blit_4
  1502. };
  1503.  
  1504. SDL_loblit SDL_CalculateBlitN(SDL_Surface *surface, int blit_index)
  1505. {
  1506.     struct private_swaccel *sdata;
  1507.     SDL_PixelFormat *srcfmt;
  1508.     SDL_PixelFormat *dstfmt;
  1509.     struct blit_table *table;
  1510.     int which;
  1511.     SDL_loblit blitfun;
  1512.  
  1513.     /* Set up data for choosing the blit */
  1514.     sdata = surface->map->sw_data;
  1515.     srcfmt = surface->format;
  1516.     dstfmt = surface->map->dst->format;
  1517.  
  1518.     if ( blit_index & 2 ) {
  1519.             /* alpha or alpha+colorkey */
  1520.             return SDL_CalculateAlphaBlit(surface, blit_index);
  1521.     }
  1522.  
  1523.     /* We don't support destinations less than 8-bits */
  1524.     if ( dstfmt->BitsPerPixel < 8 ) {
  1525.         return(NULL);
  1526.     }
  1527.     
  1528.     if(blit_index == 1) {
  1529.         /* colorkey blit: Here we don't have too many options, mostly
  1530.            because RLE is the preferred fast way to deal with this.
  1531.            If a particular case turns out to be useful we'll add it. */
  1532.  
  1533.         if(srcfmt->BytesPerPixel == 2
  1534.            && surface->map->identity)
  1535.         return Blit2to2Key;
  1536.         else if(dstfmt->BytesPerPixel == 1)
  1537.         return BlitNto1Key;
  1538.         else {
  1539.         if(srcfmt->Amask && dstfmt->Amask)
  1540.             return BlitNtoNKeyCopyAlpha;
  1541.         else
  1542.             return BlitNtoNKey;
  1543.         }
  1544.     }
  1545.  
  1546.     blitfun = NULL;
  1547.     if ( dstfmt->BitsPerPixel == 8 ) {
  1548.         /* We assume 8-bit destinations are palettized */
  1549.         if ( (srcfmt->BytesPerPixel == 4) &&
  1550.              (srcfmt->Rmask == 0x00FF0000) &&
  1551.              (srcfmt->Gmask == 0x0000FF00) &&
  1552.              (srcfmt->Bmask == 0x000000FF) ) {
  1553.             if ( surface->map->table ) {
  1554.                 blitfun = Blit_RGB888_index8_map;
  1555.             } else {
  1556. #ifdef USE_ASMBLIT
  1557.                 sdata->aux_data = ConvertX86p32_8RGB332;
  1558.                 blitfun = ConvertX86;
  1559. #else
  1560.                 blitfun = Blit_RGB888_index8;
  1561. #endif
  1562.             }
  1563.         } else {
  1564.             blitfun = BlitNto1;
  1565.         }
  1566.     } else {
  1567.         /* Now the meat, choose the blitter we want */
  1568.             int a_need = 0;
  1569.         if(dstfmt->Amask)
  1570.             a_need = srcfmt->Amask ? COPY_ALPHA : SET_ALPHA;
  1571.         table = normal_blit[srcfmt->BytesPerPixel-1];
  1572.         for ( which=0; table[which].srcR; ++which ) {
  1573.             if ( srcfmt->Rmask == table[which].srcR &&
  1574.                  srcfmt->Gmask == table[which].srcG &&
  1575.                  srcfmt->Bmask == table[which].srcB &&
  1576.                  dstfmt->BytesPerPixel == table[which].dstbpp &&
  1577.                  dstfmt->Rmask == table[which].dstR &&
  1578.                  dstfmt->Gmask == table[which].dstG &&
  1579.                  dstfmt->Bmask == table[which].dstB &&
  1580.                  (a_need & table[which].alpha) == a_need &&
  1581.                  (CPU_Flags()&table[which].cpu_flags) ==
  1582.                  table[which].cpu_flags )
  1583.                 break;
  1584.         }
  1585.         sdata->aux_data = table[which].aux_data;
  1586.         blitfun = table[which].blitfunc;
  1587.         if(a_need == COPY_ALPHA && blitfun == BlitNtoN)
  1588.             blitfun = BlitNtoNCopyAlpha;
  1589.     }
  1590.  
  1591. #ifdef DEBUG_ASM
  1592. #ifdef USE_ASMBLIT
  1593.     if ( blitfun == ConvertMMX )
  1594.         fprintf(stderr, "Using mmx blit\n");
  1595.     else
  1596.     if ( blitfun == ConvertX86 )
  1597.         fprintf(stderr, "Using asm blit\n");
  1598.     else
  1599. #endif
  1600.     if ( (blitfun == SDL_BlitNtoN) || (blitfun == SDL_BlitNto1) )
  1601.         fprintf(stderr, "Using C blit\n");
  1602.     else
  1603.         fprintf(stderr, "Using optimized C blit\n");
  1604. #endif /* DEBUG_ASM */
  1605.  
  1606.     return(blitfun);
  1607. }
  1608.