/project/jni/sdl-1.3/src/video/SDL_blit_N.c

https://github.com/aichunyu/FFPlayer · C · 2514 lines · 2155 code · 165 blank · 194 comment · 208 complexity · d4b695a71205fc371eeb8f9b6ca443d1 MD5 · raw file

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  1. /*
    2. 

  2.   Simple DirectMedia Layer
    3. 

  3.   Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
    4. 

    5. 

  5.   This software is provided 'as-is', without any express or implied
    6. 

  6.   warranty.  In no event will the authors be held liable for any damages
    7. 

  7.   arising from the use of this software.
    8. 

    9. 

  9.   Permission is granted to anyone to use this software for any purpose,
    10. 

  10.   including commercial applications, and to alter it and redistribute it
    11. 

  11.   freely, subject to the following restrictions:
    12. 

    13. 

  13.   1. The origin of this software must not be misrepresented; you must not
    14. 

  14.      claim that you wrote the original software. If you use this software
    15. 

  15.      in a product, an acknowledgment in the product documentation would be
    16. 

  16.      appreciated but is not required.
    17. 

  17.   2. Altered source versions must be plainly marked as such, and must not be
    18. 

  18.      misrepresented as being the original software.
    19. 

  19.   3. This notice may not be removed or altered from any source distribution.
    20. 

  20. */
    21. 

  21. #include "SDL_config.h"
    22. 

  22. 

  23. #include "SDL_video.h"
    24. 

  24. #include "SDL_endian.h"
    25. 

  25. #include "SDL_cpuinfo.h"
    26. 

  26. #include "SDL_blit.h"
    27. 

  27. 

  28. #include "SDL_assert.h"
    29. 

  29. 

  30. /* Functions to blit from N-bit surfaces to other surfaces */
    31. 

  31. 

  32. #if SDL_ALTIVEC_BLITTERS
    33. 

  33. #ifdef HAVE_ALTIVEC_H
    34. 

  34. #include <altivec.h>
    35. 

  35. #endif
    36. 

  36. #ifdef __MACOSX__
    37. 

  37. #include <sys/sysctl.h>
    38. 

  38. static size_t
    39. 

  39. GetL3CacheSize(void)
    40. 

  40. {
    41. 

  41.     const char key[] = "hw.l3cachesize";
    42. 

  42.     u_int64_t result = 0;
    43. 

  43.     size_t typeSize = sizeof(result);
    44. 

  44. 

  45. 

  46.     int err = sysctlbyname(key, &result, &typeSize, NULL, 0);
    47. 

  47.     if (0 != err)
    48. 

  48.         return 0;
    49. 

  49. 

  50.     return result;
    51. 

  51. }
    52. 

  52. #else
    53. 

  53. static size_t
    54. 

  54. GetL3CacheSize(void)
    55. 

  55. {
    56. 

  56.     /* XXX: Just guess G4 */
    57. 

  57.     return 2097152;
    58. 

  58. }
    59. 

  59. #endif /* __MACOSX__ */
    60. 

  60. 

  61. #if (defined(__MACOSX__) && (__GNUC__ < 4))
    62. 

  62. #define VECUINT8_LITERAL(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \
    63. 

  63.         (vector unsigned char) ( a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p )
    64. 

  64. #define VECUINT16_LITERAL(a,b,c,d,e,f,g,h) \
    65. 

  65.         (vector unsigned short) ( a,b,c,d,e,f,g,h )
    66. 

  66. #else
    67. 

  67. #define VECUINT8_LITERAL(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \
    68. 

  68.         (vector unsigned char) { a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p }
    69. 

  69. #define VECUINT16_LITERAL(a,b,c,d,e,f,g,h) \
    70. 

  70.         (vector unsigned short) { a,b,c,d,e,f,g,h }
    71. 

  71. #endif
    72. 

  72. 

  73. #define UNALIGNED_PTR(x) (((size_t) x) & 0x0000000F)
    74. 

  74. #define VSWIZZLE32(a,b,c,d) (vector unsigned char) \
    75. 

  75.                                ( 0x00+a, 0x00+b, 0x00+c, 0x00+d, \
    76. 

  76.                                  0x04+a, 0x04+b, 0x04+c, 0x04+d, \
    77. 

  77.                                  0x08+a, 0x08+b, 0x08+c, 0x08+d, \
    78. 

  78.                                  0x0C+a, 0x0C+b, 0x0C+c, 0x0C+d )
    79. 

  79. 

  80. #define MAKE8888(dstfmt, r, g, b, a)  \
    81. 

  81.     ( ((r<<dstfmt->Rshift)&dstfmt->Rmask) | \
    82. 

  82.       ((g<<dstfmt->Gshift)&dstfmt->Gmask) | \
    83. 

  83.       ((b<<dstfmt->Bshift)&dstfmt->Bmask) | \
    84. 

  84.       ((a<<dstfmt->Ashift)&dstfmt->Amask) )
    85. 

  85. 

  86. /*
    87. 

  87.  * Data Stream Touch...Altivec cache prefetching.
    88. 

  88.  *
    89. 

  89.  *  Don't use this on a G5...however, the speed boost is very significant
    90. 

  90.  *   on a G4.
    91. 

  91.  */
    92. 

  92. #define DST_CHAN_SRC 1
    93. 

  93. #define DST_CHAN_DEST 2
    94. 

  94. 

  95. /* macro to set DST control word value... */
    96. 

  96. #define DST_CTRL(size, count, stride) \
    97. 

  97.     (((size) << 24) | ((count) << 16) | (stride))
    98. 

  98. 

  99. #define VEC_ALIGNER(src) ((UNALIGNED_PTR(src)) \
    100. 

  100.     ? vec_lvsl(0, src) \
    101. 

  101.     : vec_add(vec_lvsl(8, src), vec_splat_u8(8)))
    102. 

  102. 

  103. /* Calculate the permute vector used for 32->32 swizzling */
    104. 

  104. static vector unsigned char
    105. 

  105. calc_swizzle32(const SDL_PixelFormat * srcfmt, const SDL_PixelFormat * dstfmt)
    106. 

  106. {
    107. 

  107.     /*
    108. 

  108.      * We have to assume that the bits that aren't used by other
    109. 

  109.      *  colors is alpha, and it's one complete byte, since some formats
    110. 

  110.      *  leave alpha with a zero mask, but we should still swizzle the bits.
    111. 

  111.      */
    112. 

  112.     /* ARGB */
    113. 

  113.     const static const struct SDL_PixelFormat default_pixel_format = {
    114. 

  114.         0, NULL, 0, 0,
    115. 

  115.         {0, 0},
    116. 

  116.         0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000,
    117. 

  117.         0, 0, 0, 0,
    118. 

  118.         16, 8, 0, 24,
    119. 

  119.         0, NULL
    120. 

  120.     };
    121. 

  121.     if (!srcfmt) {
    122. 

  122.         srcfmt = &default_pixel_format;
    123. 

  123.     }
    124. 

  124.     if (!dstfmt) {
    125. 

  125.         dstfmt = &default_pixel_format;
    126. 

  126.     }
    127. 

  127.     const vector unsigned char plus = VECUINT8_LITERAL(0x00, 0x00, 0x00, 0x00,
    128. 

  128.                                                        0x04, 0x04, 0x04, 0x04,
    129. 

  129.                                                        0x08, 0x08, 0x08, 0x08,
    130. 

  130.                                                        0x0C, 0x0C, 0x0C,
    131. 

  131.                                                        0x0C);
    132. 

  132.     vector unsigned char vswiz;
    133. 

  133.     vector unsigned int srcvec;
    134. 

  134. #define RESHIFT(X) (3 - ((X) >> 3))
    135. 

  135.     Uint32 rmask = RESHIFT(srcfmt->Rshift) << (dstfmt->Rshift);
    136. 

  136.     Uint32 gmask = RESHIFT(srcfmt->Gshift) << (dstfmt->Gshift);
    137. 

  137.     Uint32 bmask = RESHIFT(srcfmt->Bshift) << (dstfmt->Bshift);
    138. 

  138.     Uint32 amask;
    139. 

  139.     /* Use zero for alpha if either surface doesn't have alpha */
    140. 

  140.     if (dstfmt->Amask) {
    141. 

  141.         amask =
    142. 

  142.             ((srcfmt->Amask) ? RESHIFT(srcfmt->
    143. 

  143.                                        Ashift) : 0x10) << (dstfmt->Ashift);
    144. 

  144.     } else {
    145. 

  145.         amask =
    146. 

  146.             0x10101010 & ((dstfmt->Rmask | dstfmt->Gmask | dstfmt->Bmask) ^
    147. 

  147.                           0xFFFFFFFF);
    148. 

  148.     }
    149. 

  149. #undef RESHIFT
    150. 

  150.     ((unsigned int *) (char *) &srcvec)[0] = (rmask | gmask | bmask | amask);
    151. 

  151.     vswiz = vec_add(plus, (vector unsigned char) vec_splat(srcvec, 0));
    152. 

  152.     return (vswiz);
    153. 

  153. }
    154. 

  154. 

  155. static void Blit_RGB888_RGB565(SDL_BlitInfo * info);
    156. 

  156. static void
    157. 

  157. Blit_RGB888_RGB565Altivec(SDL_BlitInfo * info)
    158. 

  158. {
    159. 

  159.     int height = info->dst_h;
    160. 

  160.     Uint8 *src = (Uint8 *) info->src;
    161. 

  161.     int srcskip = info->src_skip;
    162. 

  162.     Uint8 *dst = (Uint8 *) info->dst;
    163. 

  163.     int dstskip = info->dst_skip;
    164. 

  164.     SDL_PixelFormat *srcfmt = info->src_fmt;
    165. 

  165.     vector unsigned char valpha = vec_splat_u8(0);
    166. 

  166.     vector unsigned char vpermute = calc_swizzle32(srcfmt, NULL);
    167. 

  167.     vector unsigned char vgmerge = VECUINT8_LITERAL(0x00, 0x02, 0x00, 0x06,
    168. 

  168.                                                     0x00, 0x0a, 0x00, 0x0e,
    169. 

  169.                                                     0x00, 0x12, 0x00, 0x16,
    170. 

  170.                                                     0x00, 0x1a, 0x00, 0x1e);
    171. 

  171.     vector unsigned short v1 = vec_splat_u16(1);
    172. 

  172.     vector unsigned short v3 = vec_splat_u16(3);
    173. 

  173.     vector unsigned short v3f =
    174. 

  174.         VECUINT16_LITERAL(0x003f, 0x003f, 0x003f, 0x003f,
    175. 

  175.                           0x003f, 0x003f, 0x003f, 0x003f);
    176. 

  176.     vector unsigned short vfc =
    177. 

  177.         VECUINT16_LITERAL(0x00fc, 0x00fc, 0x00fc, 0x00fc,
    178. 

  178.                           0x00fc, 0x00fc, 0x00fc, 0x00fc);
    179. 

  179.     vector unsigned short vf800 = (vector unsigned short) vec_splat_u8(-7);
    180. 

  180.     vf800 = vec_sl(vf800, vec_splat_u16(8));
    181. 

  181. 

  182.     while (height--) {
    183. 

  183.         vector unsigned char valigner;
    184. 

  184.         vector unsigned char voverflow;
    185. 

  185.         vector unsigned char vsrc;
    186. 

  186. 

  187.         int width = info->dst_w;
    188. 

  188.         int extrawidth;
    189. 

  189. 

  190.         /* do scalar until we can align... */
    191. 

  191. #define ONE_PIXEL_BLEND(condition, widthvar) \
    192. 

  192.         while (condition) { \
    193. 

  193.             Uint32 Pixel; \
    194. 

  194.             unsigned sR, sG, sB, sA; \
    195. 

  195.             DISEMBLE_RGBA((Uint8 *)src, 4, srcfmt, Pixel, \
    196. 

  196.                           sR, sG, sB, sA); \
    197. 

  197.             *(Uint16 *)(dst) = (((sR << 8) & 0x0000F800) | \
    198. 

  198.                                 ((sG << 3) & 0x000007E0) | \
    199. 

  199.                                 ((sB >> 3) & 0x0000001F)); \
    200. 

  200.             dst += 2; \
    201. 

  201.             src += 4; \
    202. 

  202.             widthvar--; \
    203. 

  203.         }
    204. 

  204. 

  205.         ONE_PIXEL_BLEND(((UNALIGNED_PTR(dst)) && (width)), width);
    206. 

  206. 

  207.         /* After all that work, here's the vector part! */
    208. 

  208.         extrawidth = (width % 8);       /* trailing unaligned stores */
    209. 

  209.         width -= extrawidth;
    210. 

  210.         vsrc = vec_ld(0, src);
    211. 

  211.         valigner = VEC_ALIGNER(src);
    212. 

  212. 

  213.         while (width) {
    214. 

  214.             vector unsigned short vpixel, vrpixel, vgpixel, vbpixel;
    215. 

  215.             vector unsigned int vsrc1, vsrc2;
    216. 

  216.             vector unsigned char vdst;
    217. 

  217. 

  218.             voverflow = vec_ld(15, src);
    219. 

  219.             vsrc = vec_perm(vsrc, voverflow, valigner);
    220. 

  220.             vsrc1 = (vector unsigned int) vec_perm(vsrc, valpha, vpermute);
    221. 

  221.             src += 16;
    222. 

  222.             vsrc = voverflow;
    223. 

  223.             voverflow = vec_ld(15, src);
    224. 

  224.             vsrc = vec_perm(vsrc, voverflow, valigner);
    225. 

  225.             vsrc2 = (vector unsigned int) vec_perm(vsrc, valpha, vpermute);
    226. 

  226.             /* 1555 */
    227. 

  227.             vpixel = (vector unsigned short) vec_packpx(vsrc1, vsrc2);
    228. 

  228.             vgpixel = (vector unsigned short) vec_perm(vsrc1, vsrc2, vgmerge);
    229. 

  229.             vgpixel = vec_and(vgpixel, vfc);
    230. 

  230.             vgpixel = vec_sl(vgpixel, v3);
    231. 

  231.             vrpixel = vec_sl(vpixel, v1);
    232. 

  232.             vrpixel = vec_and(vrpixel, vf800);
    233. 

  233.             vbpixel = vec_and(vpixel, v3f);
    234. 

  234.             vdst =
    235. 

  235.                 vec_or((vector unsigned char) vrpixel,
    236. 

  236.                        (vector unsigned char) vgpixel);
    237. 

  237.             /* 565 */
    238. 

  238.             vdst = vec_or(vdst, (vector unsigned char) vbpixel);
    239. 

  239.             vec_st(vdst, 0, dst);
    240. 

  240. 

  241.             width -= 8;
    242. 

  242.             src += 16;
    243. 

  243.             dst += 16;
    244. 

  244.             vsrc = voverflow;
    245. 

  245.         }
    246. 

  246. 

  247.         SDL_assert(width == 0);
    248. 

  248. 

  249.         /* do scalar until we can align... */
    250. 

  250.         ONE_PIXEL_BLEND((extrawidth), extrawidth);
    251. 

  251. #undef ONE_PIXEL_BLEND
    252. 

  252. 

  253.         src += srcskip;         /* move to next row, accounting for pitch. */
    254. 

  254.         dst += dstskip;
    255. 

  255.     }
    256. 

  256. 

  257. 

  258. }
    259. 

  259. 

  260. static void
    261. 

  261. Blit_RGB565_32Altivec(SDL_BlitInfo * info)
    262. 

  262. {
    263. 

  263.     int height = info->dst_h;
    264. 

  264.     Uint8 *src = (Uint8 *) info->src;
    265. 

  265.     int srcskip = info->src_skip;
    266. 

  266.     Uint8 *dst = (Uint8 *) info->dst;
    267. 

  267.     int dstskip = info->dst_skip;
    268. 

  268.     SDL_PixelFormat *srcfmt = info->src_fmt;
    269. 

  269.     SDL_PixelFormat *dstfmt = info->dst_fmt;
    270. 

  270.     unsigned alpha;
    271. 

  271.     vector unsigned char valpha;
    272. 

  272.     vector unsigned char vpermute;
    273. 

  273.     vector unsigned short vf800;
    274. 

  274.     vector unsigned int v8 = vec_splat_u32(8);
    275. 

  275.     vector unsigned int v16 = vec_add(v8, v8);
    276. 

  276.     vector unsigned short v2 = vec_splat_u16(2);
    277. 

  277.     vector unsigned short v3 = vec_splat_u16(3);
    278. 

  278.     /* 
    279. 

  279.        0x10 - 0x1f is the alpha
    280. 

  280.        0x00 - 0x0e evens are the red
    281. 

  281.        0x01 - 0x0f odds are zero
    282. 

  282.      */
    283. 

  283.     vector unsigned char vredalpha1 = VECUINT8_LITERAL(0x10, 0x00, 0x01, 0x01,
    284. 

  284.                                                        0x10, 0x02, 0x01, 0x01,
    285. 

  285.                                                        0x10, 0x04, 0x01, 0x01,
    286. 

  286.                                                        0x10, 0x06, 0x01,
    287. 

  287.                                                        0x01);
    288. 

  288.     vector unsigned char vredalpha2 =
    289. 

  289.         (vector unsigned
    290. 

  290.          char) (vec_add((vector unsigned int) vredalpha1, vec_sl(v8, v16))
    291. 

  291.         );
    292. 

  292.     /*
    293. 

  293.        0x00 - 0x0f is ARxx ARxx ARxx ARxx
    294. 

  294.        0x11 - 0x0f odds are blue
    295. 

  295.      */
    296. 

  296.     vector unsigned char vblue1 = VECUINT8_LITERAL(0x00, 0x01, 0x02, 0x11,
    297. 

  297.                                                    0x04, 0x05, 0x06, 0x13,
    298. 

  298.                                                    0x08, 0x09, 0x0a, 0x15,
    299. 

  299.                                                    0x0c, 0x0d, 0x0e, 0x17);
    300. 

  300.     vector unsigned char vblue2 =
    301. 

  301.         (vector unsigned char) (vec_add((vector unsigned int) vblue1, v8)
    302. 

  302.         );
    303. 

  303.     /*
    304. 

  304.        0x00 - 0x0f is ARxB ARxB ARxB ARxB
    305. 

  305.        0x10 - 0x0e evens are green
    306. 

  306.      */
    307. 

  307.     vector unsigned char vgreen1 = VECUINT8_LITERAL(0x00, 0x01, 0x10, 0x03,
    308. 

  308.                                                     0x04, 0x05, 0x12, 0x07,
    309. 

  309.                                                     0x08, 0x09, 0x14, 0x0b,
    310. 

  310.                                                     0x0c, 0x0d, 0x16, 0x0f);
    311. 

  311.     vector unsigned char vgreen2 =
    312. 

  312.         (vector unsigned
    313. 

  313.          char) (vec_add((vector unsigned int) vgreen1, vec_sl(v8, v8))
    314. 

  314.         );
    315. 

  315. 

  316.     SDL_assert(srcfmt->BytesPerPixel == 2);
    317. 

  317.     SDL_assert(dstfmt->BytesPerPixel == 4);
    318. 

  318. 

  319.     vf800 = (vector unsigned short) vec_splat_u8(-7);
    320. 

  320.     vf800 = vec_sl(vf800, vec_splat_u16(8));
    321. 

  321. 

  322.     if (dstfmt->Amask && info->a) {
    323. 

  323.         ((unsigned char *) &valpha)[0] = alpha = info->a;
    324. 

  324.         valpha = vec_splat(valpha, 0);
    325. 

  325.     } else {
    326. 

  326.         alpha = 0;
    327. 

  327.         valpha = vec_splat_u8(0);
    328. 

  328.     }
    329. 

  329. 

  330.     vpermute = calc_swizzle32(NULL, dstfmt);
    331. 

  331.     while (height--) {
    332. 

  332.         vector unsigned char valigner;
    333. 

  333.         vector unsigned char voverflow;
    334. 

  334.         vector unsigned char vsrc;
    335. 

  335. 

  336.         int width = info->dst_w;
    337. 

  337.         int extrawidth;
    338. 

  338. 

  339.         /* do scalar until we can align... */
    340. 

  340. #define ONE_PIXEL_BLEND(condition, widthvar) \
    341. 

  341.         while (condition) { \
    342. 

  342.             unsigned sR, sG, sB; \
    343. 

  343.             unsigned short Pixel = *((unsigned short *)src); \
    344. 

  344.             sR = (Pixel >> 8) & 0xf8; \
    345. 

  345.             sG = (Pixel >> 3) & 0xfc; \
    346. 

  346.             sB = (Pixel << 3) & 0xf8; \
    347. 

  347.             ASSEMBLE_RGBA(dst, 4, dstfmt, sR, sG, sB, alpha); \
    348. 

  348.             src += 2; \
    349. 

  349.             dst += 4; \
    350. 

  350.             widthvar--; \
    351. 

  351.         }
    352. 

  352.         ONE_PIXEL_BLEND(((UNALIGNED_PTR(dst)) && (width)), width);
    353. 

  353. 

  354.         /* After all that work, here's the vector part! */
    355. 

  355.         extrawidth = (width % 8);       /* trailing unaligned stores */
    356. 

  356.         width -= extrawidth;
    357. 

  357.         vsrc = vec_ld(0, src);
    358. 

  358.         valigner = VEC_ALIGNER(src);
    359. 

  359. 

  360.         while (width) {
    361. 

  361.             vector unsigned short vR, vG, vB;
    362. 

  362.             vector unsigned char vdst1, vdst2;
    363. 

  363. 

  364.             voverflow = vec_ld(15, src);
    365. 

  365.             vsrc = vec_perm(vsrc, voverflow, valigner);
    366. 

  366. 

  367.             vR = vec_and((vector unsigned short) vsrc, vf800);
    368. 

  368.             vB = vec_sl((vector unsigned short) vsrc, v3);
    369. 

  369.             vG = vec_sl(vB, v2);
    370. 

  370. 

  371.             vdst1 =
    372. 

  372.                 (vector unsigned char) vec_perm((vector unsigned char) vR,
    373. 

  373.                                                 valpha, vredalpha1);
    374. 

  374.             vdst1 = vec_perm(vdst1, (vector unsigned char) vB, vblue1);
    375. 

  375.             vdst1 = vec_perm(vdst1, (vector unsigned char) vG, vgreen1);
    376. 

  376.             vdst1 = vec_perm(vdst1, valpha, vpermute);
    377. 

  377.             vec_st(vdst1, 0, dst);
    378. 

  378. 

  379.             vdst2 =
    380. 

  380.                 (vector unsigned char) vec_perm((vector unsigned char) vR,
    381. 

  381.                                                 valpha, vredalpha2);
    382. 

  382.             vdst2 = vec_perm(vdst2, (vector unsigned char) vB, vblue2);
    383. 

  383.             vdst2 = vec_perm(vdst2, (vector unsigned char) vG, vgreen2);
    384. 

  384.             vdst2 = vec_perm(vdst2, valpha, vpermute);
    385. 

  385.             vec_st(vdst2, 16, dst);
    386. 

  386. 

  387.             width -= 8;
    388. 

  388.             dst += 32;
    389. 

  389.             src += 16;
    390. 

  390.             vsrc = voverflow;
    391. 

  391.         }
    392. 

  392. 

  393.         SDL_assert(width == 0);
    394. 

  394. 

  395. 

  396.         /* do scalar until we can align... */
    397. 

  397.         ONE_PIXEL_BLEND((extrawidth), extrawidth);
    398. 

  398. #undef ONE_PIXEL_BLEND
    399. 

  399. 

  400.         src += srcskip;         /* move to next row, accounting for pitch. */
    401. 

  401.         dst += dstskip;
    402. 

  402.     }
    403. 

  403. 

  404. }
    405. 

  405. 

  406. 

  407. static void
    408. 

  408. Blit_RGB555_32Altivec(SDL_BlitInfo * info)
    409. 

  409. {
    410. 

  410.     int height = info->dst_h;
    411. 

  411.     Uint8 *src = (Uint8 *) info->src;
    412. 

  412.     int srcskip = info->src_skip;
    413. 

  413.     Uint8 *dst = (Uint8 *) info->dst;
    414. 

  414.     int dstskip = info->dst_skip;
    415. 

  415.     SDL_PixelFormat *srcfmt = info->src_fmt;
    416. 

  416.     SDL_PixelFormat *dstfmt = info->dst_fmt;
    417. 

  417.     unsigned alpha;
    418. 

  418.     vector unsigned char valpha;
    419. 

  419.     vector unsigned char vpermute;
    420. 

  420.     vector unsigned short vf800;
    421. 

  421.     vector unsigned int v8 = vec_splat_u32(8);
    422. 

  422.     vector unsigned int v16 = vec_add(v8, v8);
    423. 

  423.     vector unsigned short v1 = vec_splat_u16(1);
    424. 

  424.     vector unsigned short v3 = vec_splat_u16(3);
    425. 

  425.     /* 
    426. 

  426.        0x10 - 0x1f is the alpha
    427. 

  427.        0x00 - 0x0e evens are the red
    428. 

  428.        0x01 - 0x0f odds are zero
    429. 

  429.      */
    430. 

  430.     vector unsigned char vredalpha1 = VECUINT8_LITERAL(0x10, 0x00, 0x01, 0x01,
    431. 

  431.                                                        0x10, 0x02, 0x01, 0x01,
    432. 

  432.                                                        0x10, 0x04, 0x01, 0x01,
    433. 

  433.                                                        0x10, 0x06, 0x01,
    434. 

  434.                                                        0x01);
    435. 

  435.     vector unsigned char vredalpha2 =
    436. 

  436.         (vector unsigned
    437. 

  437.          char) (vec_add((vector unsigned int) vredalpha1, vec_sl(v8, v16))
    438. 

  438.         );
    439. 

  439.     /*
    440. 

  440.        0x00 - 0x0f is ARxx ARxx ARxx ARxx
    441. 

  441.        0x11 - 0x0f odds are blue
    442. 

  442.      */
    443. 

  443.     vector unsigned char vblue1 = VECUINT8_LITERAL(0x00, 0x01, 0x02, 0x11,
    444. 

  444.                                                    0x04, 0x05, 0x06, 0x13,
    445. 

  445.                                                    0x08, 0x09, 0x0a, 0x15,
    446. 

  446.                                                    0x0c, 0x0d, 0x0e, 0x17);
    447. 

  447.     vector unsigned char vblue2 =
    448. 

  448.         (vector unsigned char) (vec_add((vector unsigned int) vblue1, v8)
    449. 

  449.         );
    450. 

  450.     /*
    451. 

  451.        0x00 - 0x0f is ARxB ARxB ARxB ARxB
    452. 

  452.        0x10 - 0x0e evens are green
    453. 

  453.      */
    454. 

  454.     vector unsigned char vgreen1 = VECUINT8_LITERAL(0x00, 0x01, 0x10, 0x03,
    455. 

  455.                                                     0x04, 0x05, 0x12, 0x07,
    456. 

  456.                                                     0x08, 0x09, 0x14, 0x0b,
    457. 

  457.                                                     0x0c, 0x0d, 0x16, 0x0f);
    458. 

  458.     vector unsigned char vgreen2 =
    459. 

  459.         (vector unsigned
    460. 

  460.          char) (vec_add((vector unsigned int) vgreen1, vec_sl(v8, v8))
    461. 

  461.         );
    462. 

  462. 

  463.     SDL_assert(srcfmt->BytesPerPixel == 2);
    464. 

  464.     SDL_assert(dstfmt->BytesPerPixel == 4);
    465. 

  465. 

  466.     vf800 = (vector unsigned short) vec_splat_u8(-7);
    467. 

  467.     vf800 = vec_sl(vf800, vec_splat_u16(8));
    468. 

  468. 

  469.     if (dstfmt->Amask && info->a) {
    470. 

  470.         ((unsigned char *) &valpha)[0] = alpha = info->a;
    471. 

  471.         valpha = vec_splat(valpha, 0);
    472. 

  472.     } else {
    473. 

  473.         alpha = 0;
    474. 

  474.         valpha = vec_splat_u8(0);
    475. 

  475.     }
    476. 

  476. 

  477.     vpermute = calc_swizzle32(NULL, dstfmt);
    478. 

  478.     while (height--) {
    479. 

  479.         vector unsigned char valigner;
    480. 

  480.         vector unsigned char voverflow;
    481. 

  481.         vector unsigned char vsrc;
    482. 

  482. 

  483.         int width = info->dst_w;
    484. 

  484.         int extrawidth;
    485. 

  485. 

  486.         /* do scalar until we can align... */
    487. 

  487. #define ONE_PIXEL_BLEND(condition, widthvar) \
    488. 

  488.         while (condition) { \
    489. 

  489.             unsigned sR, sG, sB; \
    490. 

  490.             unsigned short Pixel = *((unsigned short *)src); \
    491. 

  491.             sR = (Pixel >> 7) & 0xf8; \
    492. 

  492.             sG = (Pixel >> 2) & 0xf8; \
    493. 

  493.             sB = (Pixel << 3) & 0xf8; \
    494. 

  494.             ASSEMBLE_RGBA(dst, 4, dstfmt, sR, sG, sB, alpha); \
    495. 

  495.             src += 2; \
    496. 

  496.             dst += 4; \
    497. 

  497.             widthvar--; \
    498. 

  498.         }
    499. 

  499.         ONE_PIXEL_BLEND(((UNALIGNED_PTR(dst)) && (width)), width);
    500. 

  500. 

  501.         /* After all that work, here's the vector part! */
    502. 

  502.         extrawidth = (width % 8);       /* trailing unaligned stores */
    503. 

  503.         width -= extrawidth;
    504. 

  504.         vsrc = vec_ld(0, src);
    505. 

  505.         valigner = VEC_ALIGNER(src);
    506. 

  506. 

  507.         while (width) {
    508. 

  508.             vector unsigned short vR, vG, vB;
    509. 

  509.             vector unsigned char vdst1, vdst2;
    510. 

  510. 

  511.             voverflow = vec_ld(15, src);
    512. 

  512.             vsrc = vec_perm(vsrc, voverflow, valigner);
    513. 

  513. 

  514.             vR = vec_and(vec_sl((vector unsigned short) vsrc, v1), vf800);
    515. 

  515.             vB = vec_sl((vector unsigned short) vsrc, v3);
    516. 

  516.             vG = vec_sl(vB, v3);
    517. 

  517. 

  518.             vdst1 =
    519. 

  519.                 (vector unsigned char) vec_perm((vector unsigned char) vR,
    520. 

  520.                                                 valpha, vredalpha1);
    521. 

  521.             vdst1 = vec_perm(vdst1, (vector unsigned char) vB, vblue1);
    522. 

  522.             vdst1 = vec_perm(vdst1, (vector unsigned char) vG, vgreen1);
    523. 

  523.             vdst1 = vec_perm(vdst1, valpha, vpermute);
    524. 

  524.             vec_st(vdst1, 0, dst);
    525. 

  525. 

  526.             vdst2 =
    527. 

  527.                 (vector unsigned char) vec_perm((vector unsigned char) vR,
    528. 

  528.                                                 valpha, vredalpha2);
    529. 

  529.             vdst2 = vec_perm(vdst2, (vector unsigned char) vB, vblue2);
    530. 

  530.             vdst2 = vec_perm(vdst2, (vector unsigned char) vG, vgreen2);
    531. 

  531.             vdst2 = vec_perm(vdst2, valpha, vpermute);
    532. 

  532.             vec_st(vdst2, 16, dst);
    533. 

  533. 

  534.             width -= 8;
    535. 

  535.             dst += 32;
    536. 

  536.             src += 16;
    537. 

  537.             vsrc = voverflow;
    538. 

  538.         }
    539. 

  539. 

  540.         SDL_assert(width == 0);
    541. 

  541. 

  542. 

  543.         /* do scalar until we can align... */
    544. 

  544.         ONE_PIXEL_BLEND((extrawidth), extrawidth);
    545. 

  545. #undef ONE_PIXEL_BLEND
    546. 

  546. 

  547.         src += srcskip;         /* move to next row, accounting for pitch. */
    548. 

  548.         dst += dstskip;
    549. 

  549.     }
    550. 

  550. 

  551. }
    552. 

  552. 

  553. static void BlitNtoNKey(SDL_BlitInfo * info);
    554. 

  554. static void BlitNtoNKeyCopyAlpha(SDL_BlitInfo * info);
    555. 

  555. static void
    556. 

  556. Blit32to32KeyAltivec(SDL_BlitInfo * info)
    557. 

  557. {
    558. 

  558.     int height = info->dst_h;
    559. 

  559.     Uint32 *srcp = (Uint32 *) info->src;
    560. 

  560.     int srcskip = info->src_skip / 4;
    561. 

  561.     Uint32 *dstp = (Uint32 *) info->dst;
    562. 

  562.     int dstskip = info->dst_skip / 4;
    563. 

  563.     SDL_PixelFormat *srcfmt = info->src_fmt;
    564. 

  564.     int srcbpp = srcfmt->BytesPerPixel;
    565. 

  565.     SDL_PixelFormat *dstfmt = info->dst_fmt;
    566. 

  566.     int dstbpp = dstfmt->BytesPerPixel;
    567. 

  567.     int copy_alpha = (srcfmt->Amask && dstfmt->Amask);
    568. 

  568.     unsigned alpha = dstfmt->Amask ? info->a : 0;
    569. 

  569.     Uint32 rgbmask = srcfmt->Rmask | srcfmt->Gmask | srcfmt->Bmask;
    570. 

  570.     Uint32 ckey = info->colorkey;
    571. 

  571.     vector unsigned int valpha;
    572. 

  572.     vector unsigned char vpermute;
    573. 

  573.     vector unsigned char vzero;
    574. 

  574.     vector unsigned int vckey;
    575. 

  575.     vector unsigned int vrgbmask;
    576. 

  576.     vpermute = calc_swizzle32(srcfmt, dstfmt);
    577. 

  577.     if (info->dst_w < 16) {
    578. 

  578.         if (copy_alpha) {
    579. 

  579.             BlitNtoNKeyCopyAlpha(info);
    580. 

  580.         } else {
    581. 

  581.             BlitNtoNKey(info);
    582. 

  582.         }
    583. 

  583.         return;
    584. 

  584.     }
    585. 

  585.     vzero = vec_splat_u8(0);
    586. 

  586.     if (alpha) {
    587. 

  587.         ((unsigned char *) &valpha)[0] = (unsigned char) alpha;
    588. 

  588.         valpha =
    589. 

  589.             (vector unsigned int) vec_splat((vector unsigned char) valpha, 0);
    590. 

  590.     } else {
    591. 

  591.         valpha = (vector unsigned int) vzero;
    592. 

  592.     }
    593. 

  593.     ckey &= rgbmask;
    594. 

  594.     ((unsigned int *) (char *) &vckey)[0] = ckey;
    595. 

  595.     vckey = vec_splat(vckey, 0);
    596. 

  596.     ((unsigned int *) (char *) &vrgbmask)[0] = rgbmask;
    597. 

  597.     vrgbmask = vec_splat(vrgbmask, 0);
    598. 

  598. 

  599.     while (height--) {
    600. 

  600. #define ONE_PIXEL_BLEND(condition, widthvar) \
    601. 

  601.         if (copy_alpha) { \
    602. 

  602.             while (condition) { \
    603. 

  603.                 Uint32 Pixel; \
    604. 

  604.                 unsigned sR, sG, sB, sA; \
    605. 

  605.                 DISEMBLE_RGBA((Uint8 *)srcp, srcbpp, srcfmt, Pixel, \
    606. 

  606.                           sR, sG, sB, sA); \
    607. 

  607.                 if ( (Pixel & rgbmask) != ckey ) { \
    608. 

  608.                       ASSEMBLE_RGBA((Uint8 *)dstp, dstbpp, dstfmt, \
    609. 

  609.                             sR, sG, sB, sA); \
    610. 

  610.                 } \
    611. 

  611.                 dstp = (Uint32 *) (((Uint8 *) dstp) + dstbpp); \
    612. 

  612.                 srcp = (Uint32 *) (((Uint8 *) srcp) + srcbpp); \
    613. 

  613.                 widthvar--; \
    614. 

  614.             } \
    615. 

  615.         } else { \
    616. 

  616.             while (condition) { \
    617. 

  617.                 Uint32 Pixel; \
    618. 

  618.                 unsigned sR, sG, sB; \
    619. 

  619.                 RETRIEVE_RGB_PIXEL((Uint8 *)srcp, srcbpp, Pixel); \
    620. 

  620.                 if ( Pixel != ckey ) { \
    621. 

  621.                     RGB_FROM_PIXEL(Pixel, srcfmt, sR, sG, sB); \
    622. 

  622.                     ASSEMBLE_RGBA((Uint8 *)dstp, dstbpp, dstfmt, \
    623. 

  623.                               sR, sG, sB, alpha); \
    624. 

  624.                 } \
    625. 

  625.                 dstp = (Uint32 *) (((Uint8 *)dstp) + dstbpp); \
    626. 

  626.                 srcp = (Uint32 *) (((Uint8 *)srcp) + srcbpp); \
    627. 

  627.                 widthvar--; \
    628. 

  628.             } \
    629. 

  629.         }
    630. 

  630.         int width = info->dst_w;
    631. 

  631.         ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width);
    632. 

  632.         SDL_assert(width > 0);
    633. 

  633.         if (width > 0) {
    634. 

  634.             int extrawidth = (width % 4);
    635. 

  635.             vector unsigned char valigner = VEC_ALIGNER(srcp);
    636. 

  636.             vector unsigned int vs = vec_ld(0, srcp);
    637. 

  637.             width -= extrawidth;
    638. 

  638.             SDL_assert(width >= 4);
    639. 

  639.             while (width) {
    640. 

  640.                 vector unsigned char vsel;
    641. 

  641.                 vector unsigned int vd;
    642. 

  642.                 vector unsigned int voverflow = vec_ld(15, srcp);
    643. 

  643.                 /* load the source vec */
    644. 

  644.                 vs = vec_perm(vs, voverflow, valigner);
    645. 

  645.                 /* vsel is set for items that match the key */
    646. 

  646.                 vsel = (vector unsigned char) vec_and(vs, vrgbmask);
    647. 

  647.                 vsel = (vector unsigned char) vec_cmpeq(vs, vckey);
    648. 

  648.                 /* permute the src vec to the dest format */
    649. 

  649.                 vs = vec_perm(vs, valpha, vpermute);
    650. 

  650.                 /* load the destination vec */
    651. 

  651.                 vd = vec_ld(0, dstp);
    652. 

  652.                 /* select the source and dest into vs */
    653. 

  653.                 vd = (vector unsigned int) vec_sel((vector unsigned char) vs,
    654. 

  654.                                                    (vector unsigned char) vd,
    655. 

  655.                                                    vsel);
    656. 

  656. 

  657.                 vec_st(vd, 0, dstp);
    658. 

  658.                 srcp += 4;
    659. 

  659.                 width -= 4;
    660. 

  660.                 dstp += 4;
    661. 

  661.                 vs = voverflow;
    662. 

  662.             }
    663. 

  663.             ONE_PIXEL_BLEND((extrawidth), extrawidth);
    664. 

  664. #undef ONE_PIXEL_BLEND
    665. 

  665.             srcp += srcskip;
    666. 

  666.             dstp += dstskip;
    667. 

  667.         }
    668. 

  668.     }
    669. 

  669. }
    670. 

  670. 

  671. /* Altivec code to swizzle one 32-bit surface to a different 32-bit format. */
    672. 

  672. /* Use this on a G5 */
    673. 

  673. static void
    674. 

  674. ConvertAltivec32to32_noprefetch(SDL_BlitInfo * info)
    675. 

  675. {
    676. 

  676.     int height = info->dst_h;
    677. 

  677.     Uint32 *src = (Uint32 *) info->src;
    678. 

  678.     int srcskip = info->src_skip / 4;
    679. 

  679.     Uint32 *dst = (Uint32 *) info->dst;
    680. 

  680.     int dstskip = info->dst_skip / 4;
    681. 

  681.     SDL_PixelFormat *srcfmt = info->src_fmt;
    682. 

  682.     SDL_PixelFormat *dstfmt = info->dst_fmt;
    683. 

  683.     vector unsigned int vzero = vec_splat_u32(0);
    684. 

  684.     vector unsigned char vpermute = calc_swizzle32(srcfmt, dstfmt);
    685. 

  685.     if (dstfmt->Amask && !srcfmt->Amask) {
    686. 

  686.         if (info->a) {
    687. 

  687.             vector unsigned char valpha;
    688. 

  688.             ((unsigned char *) &valpha)[0] = info->a;
    689. 

  689.             vzero = (vector unsigned int) vec_splat(valpha, 0);
    690. 

  690.         }
    691. 

  691.     }
    692. 

  692. 

  693.     SDL_assert(srcfmt->BytesPerPixel == 4);
    694. 

  694.     SDL_assert(dstfmt->BytesPerPixel == 4);
    695. 

  695. 

  696.     while (height--) {
    697. 

  697.         vector unsigned char valigner;
    698. 

  698.         vector unsigned int vbits;
    699. 

  699.         vector unsigned int voverflow;
    700. 

  700.         Uint32 bits;
    701. 

  701.         Uint8 r, g, b, a;
    702. 

  702. 

  703.         int width = info->dst_w;
    704. 

  704.         int extrawidth;
    705. 

  705. 

  706.         /* do scalar until we can align... */
    707. 

  707.         while ((UNALIGNED_PTR(dst)) && (width)) {
    708. 

  708.             bits = *(src++);
    709. 

  709.             RGBA_FROM_8888(bits, srcfmt, r, g, b, a);
    710. 

  710.             if(!srcfmt->Amask)
    711. 

  711.               a = info->a;
    712. 

  712.             *(dst++) = MAKE8888(dstfmt, r, g, b, a);
    713. 

  713.             width--;
    714. 

  714.         }
    715. 

  715. 

  716.         /* After all that work, here's the vector part! */
    717. 

  717.         extrawidth = (width % 4);
    718. 

  718.         width -= extrawidth;
    719. 

  719.         valigner = VEC_ALIGNER(src);
    720. 

  720.         vbits = vec_ld(0, src);
    721. 

  721. 

  722.         while (width) {
    723. 

  723.             voverflow = vec_ld(15, src);
    724. 

  724.             src += 4;
    725. 

  725.             width -= 4;
    726. 

  726.             vbits = vec_perm(vbits, voverflow, valigner);       /* src is ready. */
    727. 

  727.             vbits = vec_perm(vbits, vzero, vpermute);   /* swizzle it. */
    728. 

  728.             vec_st(vbits, 0, dst);      /* store it back out. */
    729. 

  729.             dst += 4;
    730. 

  730.             vbits = voverflow;
    731. 

  731.         }
    732. 

  732. 

  733.         SDL_assert(width == 0);
    734. 

  734. 

  735.         /* cover pixels at the end of the row that didn't fit in 16 bytes. */
    736. 

  736.         while (extrawidth) {
    737. 

  737.             bits = *(src++);    /* max 7 pixels, don't bother with prefetch. */
    738. 

  738.             RGBA_FROM_8888(bits, srcfmt, r, g, b, a);
    739. 

  739.             if(!srcfmt->Amask)
    740. 

  740.               a = info->a;
    741. 

  741.             *(dst++) = MAKE8888(dstfmt, r, g, b, a);
    742. 

  742.             extrawidth--;
    743. 

  743.         }
    744. 

  744. 

  745.         src += srcskip;
    746. 

  746.         dst += dstskip;
    747. 

  747.     }
    748. 

  748. 

  749. }
    750. 

  750. 

  751. /* Altivec code to swizzle one 32-bit surface to a different 32-bit format. */
    752. 

  752. /* Use this on a G4 */
    753. 

  753. static void
    754. 

  754. ConvertAltivec32to32_prefetch(SDL_BlitInfo * info)
    755. 

  755. {
    756. 

  756.     const int scalar_dst_lead = sizeof(Uint32) * 4;
    757. 

  757.     const int vector_dst_lead = sizeof(Uint32) * 16;
    758. 

  758. 

  759.     int height = info->dst_h;
    760. 

  760.     Uint32 *src = (Uint32 *) info->src;
    761. 

  761.     int srcskip = info->src_skip / 4;
    762. 

  762.     Uint32 *dst = (Uint32 *) info->dst;
    763. 

  763.     int dstskip = info->dst_skip / 4;
    764. 

  764.     SDL_PixelFormat *srcfmt = info->src_fmt;
    765. 

  765.     SDL_PixelFormat *dstfmt = info->dst_fmt;
    766. 

  766.     vector unsigned int vzero = vec_splat_u32(0);
    767. 

  767.     vector unsigned char vpermute = calc_swizzle32(srcfmt, dstfmt);
    768. 

  768.     if (dstfmt->Amask && !srcfmt->Amask) {
    769. 

  769.         if (info->a) {
    770. 

  770.             vector unsigned char valpha;
    771. 

  771.             ((unsigned char *) &valpha)[0] = info->a;
    772. 

  772.             vzero = (vector unsigned int) vec_splat(valpha, 0);
    773. 

  773.         }
    774. 

  774.     }
    775. 

  775. 

  776.     SDL_assert(srcfmt->BytesPerPixel == 4);
    777. 

  777.     SDL_assert(dstfmt->BytesPerPixel == 4);
    778. 

  778. 

  779.     while (height--) {
    780. 

  780.         vector unsigned char valigner;
    781. 

  781.         vector unsigned int vbits;
    782. 

  782.         vector unsigned int voverflow;
    783. 

  783.         Uint32 bits;
    784. 

  784.         Uint8 r, g, b, a;
    785. 

  785. 

  786.         int width = info->dst_w;
    787. 

  787.         int extrawidth;
    788. 

  788. 

  789.         /* do scalar until we can align... */
    790. 

  790.         while ((UNALIGNED_PTR(dst)) && (width)) {
    791. 

  791.             vec_dstt(src + scalar_dst_lead, DST_CTRL(2, 32, 1024),
    792. 

  792.                      DST_CHAN_SRC);
    793. 

  793.             vec_dstst(dst + scalar_dst_lead, DST_CTRL(2, 32, 1024),
    794. 

  794.                       DST_CHAN_DEST);
    795. 

  795.             bits = *(src++);
    796. 

  796.             RGBA_FROM_8888(bits, srcfmt, r, g, b, a);
    797. 

  797.             if(!srcfmt->Amask)
    798. 

  798.               a = info->a;
    799. 

  799.             *(dst++) = MAKE8888(dstfmt, r, g, b, a);
    800. 

  800.             width--;
    801. 

  801.         }
    802. 

  802. 

  803.         /* After all that work, here's the vector part! */
    804. 

  804.         extrawidth = (width % 4);
    805. 

  805.         width -= extrawidth;
    806. 

  806.         valigner = VEC_ALIGNER(src);
    807. 

  807.         vbits = vec_ld(0, src);
    808. 

  808. 

  809.         while (width) {
    810. 

  810.             vec_dstt(src + vector_dst_lead, DST_CTRL(2, 32, 1024),
    811. 

  811.                      DST_CHAN_SRC);
    812. 

  812.             vec_dstst(dst + vector_dst_lead, DST_CTRL(2, 32, 1024),
    813. 

  813.                       DST_CHAN_DEST);
    814. 

  814.             voverflow = vec_ld(15, src);
    815. 

  815.             src += 4;
    816. 

  816.             width -= 4;
    817. 

  817.             vbits = vec_perm(vbits, voverflow, valigner);       /* src is ready. */
    818. 

  818.             vbits = vec_perm(vbits, vzero, vpermute);   /* swizzle it. */
    819. 

  819.             vec_st(vbits, 0, dst);      /* store it back out. */
    820. 

  820.             dst += 4;
    821. 

  821.             vbits = voverflow;
    822. 

  822.         }
    823. 

  823. 

  824.         SDL_assert(width == 0);
    825. 

  825. 

  826.         /* cover pixels at the end of the row that didn't fit in 16 bytes. */
    827. 

  827.         while (extrawidth) {
    828. 

  828.             bits = *(src++);    /* max 7 pixels, don't bother with prefetch. */
    829. 

  829.             RGBA_FROM_8888(bits, srcfmt, r, g, b, a);
    830. 

  830.             if(!srcfmt->Amask)
    831. 

  831.               a = info->a;
    832. 

  832.             *(dst++) = MAKE8888(dstfmt, r, g, b, a);
    833. 

  833.             extrawidth--;
    834. 

  834.         }
    835. 

  835. 

  836.         src += srcskip;
    837. 

  837.         dst += dstskip;
    838. 

  838.     }
    839. 

  839. 

  840.     vec_dss(DST_CHAN_SRC);
    841. 

  841.     vec_dss(DST_CHAN_DEST);
    842. 

  842. }
    843. 

  843. 

  844. static Uint32
    845. 

  845. GetBlitFeatures(void)
    846. 

  846. {
    847. 

  847.     static Uint32 features = 0xffffffff;
    848. 

  848.     if (features == 0xffffffff) {
    849. 

  849.         /* Provide an override for testing .. */
    850. 

  850.         char *override = SDL_getenv("SDL_ALTIVEC_BLIT_FEATURES");
    851. 

  851.         if (override) {
    852. 

  852.             features = 0;
    853. 

  853.             SDL_sscanf(override, "%u", &features);
    854. 

  854.         } else {
    855. 

  855.             features = (0
    856. 

  856.                         /* Feature 1 is has-MMX */
    857. 

  857.                         | ((SDL_HasMMX())? 1 : 0)
    858. 

  858.                         /* Feature 2 is has-AltiVec */
    859. 

  859.                         | ((SDL_HasAltiVec())? 2 : 0)
    860. 

  860.                         /* Feature 4 is dont-use-prefetch */
    861. 

  861.                         /* !!!! FIXME: Check for G5 or later, not the cache size! Always prefetch on a G4. */
    862. 

  862.                         | ((GetL3CacheSize() == 0) ? 4 : 0)
    863. 

  863.                 );
    864. 

  864.         }
    865. 

  865.     }
    866. 

  866.     return features;
    867. 

  867. }
    868. 

  868. 

  869. #if __MWERKS__
    870. 

  870. #pragma altivec_model off
    871. 

  871. #endif
    872. 

  872. #else
    873. 

  873. /* Feature 1 is has-MMX */
    874. 

  874. #define GetBlitFeatures() ((Uint32)(SDL_HasMMX() ? 1 : 0))
    875. 

  875. #endif
    876. 

  876. 

  877. /* This is now endian dependent */
    878. 

  878. #if SDL_BYTEORDER == SDL_LIL_ENDIAN
    879. 

  879. #define HI	1
    880. 

  880. #define LO	0
    881. 

  881. #else /* SDL_BYTEORDER == SDL_BIG_ENDIAN */
    882. 

  882. #define HI	0
    883. 

  883. #define LO	1
    884. 

  884. #endif
    885. 

  885. 

  886. /* Special optimized blit for RGB 8-8-8 --> RGB 3-3-2 */
    887. 

  887. #define RGB888_RGB332(dst, src) { \
    888. 

  888. 	dst = (Uint8)((((src)&0x00E00000)>>16)| \
    889. 

  889. 	              (((src)&0x0000E000)>>11)| \
    890. 

  890. 	              (((src)&0x000000C0)>>6)); \
    891. 

  891. }
    892. 

  892. static void
    893. 

  893. Blit_RGB888_index8(SDL_BlitInfo * info)
    894. 

  894. {
    895. 

  895. #ifndef USE_DUFFS_LOOP
    896. 

  896.     int c;
    897. 

  897. #endif
    898. 

  898.     int width, height;
    899. 

  899.     Uint32 *src;
    900. 

  900.     const Uint8 *map;
    901. 

  901.     Uint8 *dst;
    902. 

  902.     int srcskip, dstskip;
    903. 

  903. 

  904.     /* Set up some basic variables */
    905. 

  905.     width = info->dst_w;
    906. 

  906.     height = info->dst_h;
    907. 

  907.     src = (Uint32 *) info->src;
    908. 

  908.     srcskip = info->src_skip / 4;
    909. 

  909.     dst = info->dst;
    910. 

  910.     dstskip = info->dst_skip;
    911. 

  911.     map = info->table;
    912. 

  912. 

  913.     if (map == NULL) {
    914. 

  914.         while (height--) {
    915. 

  915. #ifdef USE_DUFFS_LOOP
    916. 

  916. 			/* *INDENT-OFF* */
    917. 

  917. 			DUFFS_LOOP(
    918. 

  918. 				RGB888_RGB332(*dst++, *src);
    919. 

  919. 			, width);
    920. 

  920. 			/* *INDENT-ON* */
    921. 

  921. #else
    922. 

  922.             for (c = width / 4; c; --c) {
    923. 

  923.                 /* Pack RGB into 8bit pixel */
    924. 

  924.                 ++src;
    925. 

  925.                 RGB888_RGB332(*dst++, *src);
    926. 

  926.                 ++src;
    927. 

  927.                 RGB888_RGB332(*dst++, *src);
    928. 

  928.                 ++src;
    929. 

  929.                 RGB888_RGB332(*dst++, *src);
    930. 

  930.                 ++src;
    931. 

  931.             }
    932. 

  932.             switch (width & 3) {
    933. 

  933.             case 3:
    934. 

  934.                 RGB888_RGB332(*dst++, *src);
    935. 

  935.                 ++src;
    936. 

  936.             case 2:
    937. 

  937.                 RGB888_RGB332(*dst++, *src);
    938. 

  938.                 ++src;
    939. 

  939.             case 1:
    940. 

  940.                 RGB888_RGB332(*dst++, *src);
    941. 

  941.                 ++src;
    942. 

  942.             }
    943. 

  943. #endif /* USE_DUFFS_LOOP */
    944. 

  944.             src += srcskip;
    945. 

  945.             dst += dstskip;
    946. 

  946.         }
    947. 

  947.     } else {
    948. 

  948.         int Pixel;
    949. 

  949. 

  950.         while (height--) {
    951. 

  951. #ifdef USE_DUFFS_LOOP
    952. 

  952. 			/* *INDENT-OFF* */
    953. 

  953. 			DUFFS_LOOP(
    954. 

  954. 				RGB888_RGB332(Pixel, *src);
    955. 

  955. 				*dst++ = map[Pixel];
    956. 

  956. 				++src;
    957. 

  957. 			, width);
    958. 

  958. 			/* *INDENT-ON* */
    959. 

  959. #else
    960. 

  960.             for (c = width / 4; c; --c) {
    961. 

  961.                 /* Pack RGB into 8bit pixel */
    962. 

  962.                 RGB888_RGB332(Pixel, *src);
    963. 

  963.                 *dst++ = map[Pixel];
    964. 

  964.                 ++src;
    965. 

  965.                 RGB888_RGB332(Pixel, *src);
    966. 

  966.                 *dst++ = map[Pixel];
    967. 

  967.                 ++src;
    968. 

  968.                 RGB888_RGB332(Pixel, *src);
    969. 

  969.                 *dst++ = map[Pixel];
    970. 

  970.                 ++src;
    971. 

  971.                 RGB888_RGB332(Pixel, *src);
    972. 

  972.                 *dst++ = map[Pixel];
    973. 

  973.                 ++src;
    974. 

  974.             }
    975. 

  975.             switch (width & 3) {
    976. 

  976.             case 3:
    977. 

  977.                 RGB888_RGB332(Pixel, *src);
    978. 

  978.                 *dst++ = map[Pixel];
    979. 

  979.                 ++src;
    980. 

  980.             case 2:
    981. 

  981.                 RGB888_RGB332(Pixel, *src);
    982. 

  982.                 *dst++ = map[Pixel];
    983. 

  983.                 ++src;
    984. 

  984.             case 1:
    985. 

  985.                 RGB888_RGB332(Pixel, *src);
    986. 

  986.                 *dst++ = map[Pixel];
    987. 

  987.                 ++src;
    988. 

  988.             }
    989. 

  989. #endif /* USE_DUFFS_LOOP */
    990. 

  990.             src += srcskip;
    991. 

  991.             dst += dstskip;
    992. 

  992.         }
    993. 

  993.     }
    994. 

  994. }
    995. 

  995. 

  996. /* Special optimized blit for RGB 8-8-8 --> RGB 5-5-5 */
    997. 

  997. #define RGB888_RGB555(dst, src) { \
    998. 

  998. 	*(Uint16 *)(dst) = (Uint16)((((*src)&0x00F80000)>>9)| \
    999. 

  999. 	                            (((*src)&0x0000F800)>>6)| \
    1000. 

  1000. 	                            (((*src)&0x000000F8)>>3)); \
    1001. 

  1001. }
    1002. 

  1002. #define RGB888_RGB555_TWO(dst, src) { \
    1003. 

  1003. 	*(Uint32 *)(dst) = (((((src[HI])&0x00F80000)>>9)| \
    1004. 

  1004. 	                     (((src[HI])&0x0000F800)>>6)| \
    1005. 

  1005. 	                     (((src[HI])&0x000000F8)>>3))<<16)| \
    1006. 

  1006. 	                     (((src[LO])&0x00F80000)>>9)| \
    1007. 

  1007. 	                     (((src[LO])&0x0000F800)>>6)| \
    1008. 

  1008. 	                     (((src[LO])&0x000000F8)>>3); \
    1009. 

  1009. }
    1010. 

  1010. static void
    1011. 

  1011. Blit_RGB888_RGB555(SDL_BlitInfo * info)
    1012. 

  1012. {
    1013. 

  1013. #ifndef USE_DUFFS_LOOP
    1014. 

  1014.     int c;
    1015. 

  1015. #endif
    1016. 

  1016.     int width, height;
    1017. 

  1017.     Uint32 *src;
    1018. 

  1018.     Uint16 *dst;
    1019. 

  1019.     int srcskip, dstskip;
    1020. 

  1020. 

  1021.     /* Set up some basic variables */
    1022. 

  1022.     width = info->dst_w;
    1023. 

  1023.     height = info->dst_h;
    1024. 

  1024.     src = (Uint32 *) info->src;
    1025. 

  1025.     srcskip = info->src_skip / 4;
    1026. 

  1026.     dst = (Uint16 *) info->dst;
    1027. 

  1027.     dstskip = info->dst_skip / 2;
    1028. 

  1028. 

  1029. #ifdef USE_DUFFS_LOOP
    1030. 

  1030.     while (height--) {
    1031. 

  1031. 		/* *INDENT-OFF* */
    1032. 

  1032. 		DUFFS_LOOP(
    1033. 

  1033. 			RGB888_RGB555(dst, src);
    1034. 

  1034. 			++src;
    1035. 

  1035. 			++dst;
    1036. 

  1036. 		, width);
    1037. 

  1037. 		/* *INDENT-ON* */
    1038. 

  1038.         src += srcskip;
    1039. 

  1039.         dst += dstskip;
    1040. 

  1040.     }
    1041. 

  1041. #else
    1042. 

  1042.     /* Memory align at 4-byte boundary, if necessary */
    1043. 

  1043.     if ((long) dst & 0x03) {
    1044. 

  1044.         /* Don't do anything if width is 0 */
    1045. 

  1045.         if (width == 0) {
    1046. 

  1046.             return;
    1047. 

  1047.         }
    1048. 

  1048.         --width;
    1049. 

  1049. 

  1050.         while (height--) {
    1051. 

  1051.             /* Perform copy alignment */
    1052. 

  1052.             RGB888_RGB555(dst, src);
    1053. 

  1053.             ++src;
    1054. 

  1054.             ++dst;
    1055. 

  1055. 

  1056.             /* Copy in 4 pixel chunks */
    1057. 

  1057.             for (c = width / 4; c; --c) {
    1058. 

  1058.                 RGB888_RGB555_TWO(dst, src);
    1059. 

  1059.                 src += 2;
    1060. 

  1060.                 dst += 2;
    1061. 

  1061.                 RGB888_RGB555_TWO(dst, src);
    1062. 

  1062.                 src += 2;
    1063. 

  1063.                 dst += 2;
    1064. 

  1064.             }
    1065. 

  1065.             /* Get any leftovers */
    1066. 

  1066.             switch (width & 3) {
    1067. 

  1067.             case 3:
    1068. 

  1068.                 RGB888_RGB555(dst, src);
    1069. 

  1069.                 ++src;
    1070. 

  1070.                 ++dst;
    1071. 

  1071.             case 2:
    1072. 

  1072.                 RGB888_RGB555_TWO(dst, src);
    1073. 

  1073.                 src += 2;
    1074. 

  1074.                 dst += 2;
    1075. 

  1075.                 break;
    1076. 

  1076.             case 1:
    1077. 

  1077.                 RGB888_RGB555(dst, src);
    1078. 

  1078.                 ++src;
    1079. 

  1079.                 ++dst;
    1080. 

  1080.                 break;
    1081. 

  1081.             }
    1082. 

  1082.             src += srcskip;
    1083. 

  1083.             dst += dstskip;
    1084. 

  1084.         }
    1085. 

  1085.     } else {
    1086. 

  1086.         while (height--) {
    1087. 

  1087.             /* Copy in 4 pixel chunks */
    1088. 

  1088.             for (c = width / 4; c; --c) {
    1089. 

  1089.                 RGB888_RGB555_TWO(dst, src);
    1090. 

  1090.                 src += 2;
    1091. 

  1091.                 dst += 2;
    1092. 

  1092.                 RGB888_RGB555_TWO(dst, src);
    1093. 

  1093.                 src += 2;
    1094. 

  1094.                 dst += 2;
    1095. 

  1095.             }
    1096. 

  1096.             /* Get any leftovers */
    1097. 

  1097.             switch (width & 3) {
    1098. 

  1098.             case 3:
    1099. 

  1099.                 RGB888_RGB555(dst, src);
    1100. 

  1100.                 ++src;
    1101. 

  1101.                 ++dst;
    1102. 

  1102.             case 2:
    1103. 

  1103.                 RGB888_RGB555_TWO(dst, src);
    1104. 

  1104.                 src += 2;
    1105. 

  1105.                 dst += 2;
    1106. 

  1106.                 break;
    1107. 

  1107.             case 1:
    1108. 

  1108.                 RGB888_RGB555(dst, src);
    1109. 

  1109.                 ++src;
    1110. 

  1110.                 ++dst;
    1111. 

  1111.                 break;
    1112. 

  1112.             }
    1113. 

  1113.             src += srcskip;
    1114. 

  1114.             dst += dstskip;
    1115. 

  1115.         }
    1116. 

  1116.     }
    1117. 

  1117. #endif /* USE_DUFFS_LOOP */
    1118. 

  1118. }
    1119. 

  1119. 

  1120. /* Special optimized blit for RGB 8-8-8 --> RGB 5-6-5 */
    1121. 

  1121. #define RGB888_RGB565(dst, src) { \
    1122. 

  1122. 	*(Uint16 *)(dst) = (Uint16)((((*src)&0x00F80000)>>8)| \
    1123. 

  1123. 	                            (((*src)&0x0000FC00)>>5)| \
    1124. 

  1124. 	                            (((*src)&0x000000F8)>>3)); \
    1125. 

  1125. }
    1126. 

  1126. #define RGB888_RGB565_TWO(dst, src) { \
    1127. 

  1127. 	*(Uint32 *)(dst) = (((((src[HI])&0x00F80000)>>8)| \
    1128. 

  1128. 	                     (((src[HI])&0x0000FC00)>>5)| \
    1129. 

  1129. 	                     (((src[HI])&0x000000F8)>>3))<<16)| \
    1130. 

  1130. 	                     (((src[LO])&0x00F80000)>>8)| \
    1131. 

  1131. 	                     (((src[LO])&0x0000FC00)>>5)| \
    1132. 

  1132. 	                     (((src[LO])&0x000000F8)>>3); \
    1133. 

  1133. }
    1134. 

  1134. static void
    1135. 

  1135. Blit_RGB888_RGB565(SDL_BlitInfo * info)
    1136. 

  1136. {
    1137. 

  1137. #ifndef USE_DUFFS_LOOP
    1138. 

  1138.     int c;
    1139. 

  1139. #endif
    1140. 

  1140.     int width, height;
    1141. 

  1141.     Uint32 *src;
    1142. 

  1142.     Uint16 *dst;
    1143. 

  1143.     int srcskip, dstskip;
    1144. 

  1144. 

  1145.     /* Set up some basic variables */
    1146. 

  1146.     width = info->dst_w;
    1147. 

  1147.     height = info->dst_h;
    1148. 

  1148.     src = (Uint32 *) info->src;
    1149. 

  1149.     srcskip = info->src_skip / 4;
    1150. 

  1150.     dst = (Uint16 *) info->dst;
    1151. 

  1151.     dstskip = info->dst_skip / 2;
    1152. 

  1152. 

  1153. #ifdef USE_DUFFS_LOOP
    1154. 

  1154.     while (height--) {
    1155. 

  1155. 		/* *INDENT-OFF* */
    1156. 

  1156. 		DUFFS_LOOP(
    1157. 

  1157. 			RGB888_RGB565(dst, src);
    1158. 

  1158. 			++src;
    1159. 

  1159. 			++dst;
    1160. 

  1160. 		, width);
    1161. 

  1161. 		/* *INDENT-ON* */
    1162. 

  1162.         src += srcskip;
    1163. 

  1163.         dst += dstskip;
    1164. 

  1164.     }
    1165. 

  1165. #else
    1166. 

  1166.     /* Memory align at 4-byte boundary, if necessary */
    1167. 

  1167.     if ((long) dst & 0x03) {
    1168. 

  1168.         /* Don't do anything if width is 0 */
    1169. 

  1169.         if (width == 0) {
    1170. 

  1170.             return;
    1171. 

  1171.         }
    1172. 

  1172.         --width;
    1173. 

  1173. 

  1174.         while (height--) {
    1175. 

  1175.             /* Perform copy alignment */
    1176. 

  1176.             RGB888_RGB565(dst, src);
    1177. 

  1177.             ++src;
    1178. 

  1178.             ++dst;
    1179. 

  1179. 

  1180.             /* Copy in 4 pixel chunks */
    1181. 

  1181.             for (c = width / 4; c; --c) {
    1182. 

  1182.                 RGB888_RGB565_TWO(dst, src);
    1183. 

  1183.                 src += 2;
    1184. 

  1184.                 dst += 2;
    1185. 

  1185.                 RGB888_RGB565_TWO(dst, src);
    1186. 

  1186.                 src += 2;
    1187. 

  1187.                 dst += 2;
    1188. 

  1188.             }
    1189. 

  1189.             /* Get any leftovers */
    1190. 

  1190.             switch (width & 3) {
    1191. 

  1191.             case 3:
    1192. 

  1192.                 RGB888_RGB565(dst, src);
    1193. 

  1193.                 ++src;
    1194. 

  1194.                 ++dst;
    1195. 

  1195.             case 2:
    1196. 

  1196.                 RGB888_RGB565_TWO(dst, src);
    1197. 

  1197.                 src += 2;
    1198. 

  1198.                 dst += 2;
    1199. 

  1199.                 break;
    1200. 

  1200.             case 1:
    1201. 

  1201.                 RGB888_RGB565(dst, src);
    1202. 

  1202.                 ++src;
    1203. 

  1203.                 ++dst;
    1204. 

  1204.                 break;
    1205. 

  1205.             }
    1206. 

  1206.             src += srcskip;
    1207. 

  1207.             dst += dstskip;
    1208. 

  1208.         }
    1209. 

  1209.     } else {
    1210. 

  1210.         while (height--) {
    1211. 

  1211.             /* Copy in 4 pixel chunks */
    1212. 

  1212.             for (c = width / 4; c; --c) {
    1213. 

  1213.                 RGB888_RGB565_TWO(dst, src);
    1214. 

  1214.                 src += 2;
    1215. 

  1215.                 dst += 2;
    1216. 

  1216.                 RGB888_RGB565_TWO(dst, src);
    1217. 

  1217.                 src += 2;
    1218. 

  1218.                 dst += 2;
    1219. 

  1219.             }
    1220. 

  1220.             /* Get any leftovers */
    1221. 

  1221.             switch (width & 3) {
    1222. 

  1222.             case 3:
    1223. 

  1223.                 RGB888_RGB565(dst, src);
    1224. 

  1224.                 ++src;
    1225. 

  1225.                 ++dst;
    1226. 

  1226.             case 2:
    1227. 

  1227.                 RGB888_RGB565_TWO(dst, src);
    1228. 

  1228.                 src += 2;
    1229. 

  1229.                 dst += 2;
    1230. 

  1230.                 break;
    1231. 

  1231.             case 1:
    1232. 

  1232.                 RGB888_RGB565(dst, src);
    1233. 

  1233.                 ++src;
    1234. 

  1234.                 ++dst;
    1235. 

  1235.                 break;
    1236. 

  1236.             }
    1237. 

  1237.             src += srcskip;
    1238. 

  1238.             dst += dstskip;
    1239. 

  1239.         }
    1240. 

  1240.     }
    1241. 

  1241. #endif /* USE_DUFFS_LOOP */
    1242. 

  1242. }
    1243. 

  1243. 

  1244. 

  1245. /* Special optimized blit for RGB 5-6-5 --> 32-bit RGB surfaces */
    1246. 

  1246. #define RGB565_32(dst, src, map) (map[src[LO]*2] + map[src[HI]*2+1])
    1247. 

  1247. static void
    1248. 

  1248. Blit_RGB565_32(SDL_BlitInfo * info, const Uint32 * map)
    1249. 

  1249. {
    1250. 

  1250. #ifndef USE_DUFFS_LOOP
    1251. 

  1251.     int c;
    1252. 

  1252. #endif
    1253. 

  1253.     int width, height;
    1254. 

  1254.     Uint8 *src;
    1255. 

  1255.     Uint32 *dst;
    1256. 

  1256.     int srcskip, dstskip;
    1257. 

  1257. 

  1258.     /* Set up some basic variables */
    1259. 

  1259.     width = info->dst_w;
    1260. 

  1260.     height = info->dst_h;
    1261. 

  1261.     src = (Uint8 *) info->src;
    1262. 

  1262.     srcskip = info->src_skip;
    1263. 

  1263.     dst = (Uint32 *) info->dst;
    1264. 

  1264.     dstskip = info->dst_skip / 4;
    1265. 

  1265. 

  1266. #ifdef USE_DUFFS_LOOP
    1267. 

  1267.     while (height--) {
    1268. 

  1268. 		/* *INDENT-OFF* */
    1269. 

  1269. 		DUFFS_LOOP(
    1270. 

  1270. 		{
    1271. 

  1271. 			*dst++ = RGB565_32(dst, src, map);
    1272. 

  1272. 			src += 2;
    1273. 

  1273. 		},
    1274. 

  1274. 		width);
    1275. 

  1275. 		/* *INDENT-ON* */
    1276. 

  1276.         src += srcskip;
    1277. 

  1277.         dst += dstskip;
    1278. 

  1278.     }
    1279. 

  1279. #else
    1280. 

  1280.     while (height--) {
    1281. 

  1281.         /* Copy in 4 pixel chunks */
    1282. 

  1282.         for (c = width / 4; c; --c) {
    1283. 

  1283.             *dst++ = RGB565_32(dst, src, map);
    1284. 

  1284.             src += 2;
    1285. 

  1285.             *dst++ = RGB565_32(dst, src, map);
    1286. 

  1286.             src += 2;
    1287. 

  1287.             *dst++ = RGB565_32(dst, src, map);
    1288. 

  1288.             src += 2;
    1289. 

  1289.             *dst++ = RGB565_32(dst, src, map);
    1290. 

  1290.             src += 2;
    1291. 

  1291.         }
    1292. 

  1292.         /* Get any leftovers */
    1293. 

  1293.         switch (width & 3) {
    1294. 

  1294.         case 3:
    1295. 

  1295.             *dst++ = RGB565_32(dst, src, map);
    1296. 

  1296.             src += 2;
    1297. 

  1297.         case 2:
    1298. 

  1298.             *dst++ = RGB565_32(dst, src, map);
    1299. 

  1299.             src += 2;
    1300. 

  1300.         case 1:
    1301. 

  1301.             *dst++ = RGB565_32(dst, src, map);
    1302. 

  1302.             src += 2;
    1303. 

  1303.             break;
    1304. 

  1304.         }
    1305. 

  1305.         src += srcskip;
    1306. 

  1306.         dst += dstskip;
    1307. 

  1307.     }
    1308. 

  1308. #endif /* USE_DUFFS_LOOP */
    1309. 

  1309. }
    1310. 

  1310. 

  1311. /* Special optimized blit for RGB 5-6-5 --> ARGB 8-8-8-8 */
    1312. 

  1312. static const Uint32 RGB565_ARGB8888_LUT[512] = {
    1313. 

  1313.     0x00000000, 0xff000000, 0x00000008, 0xff002000,
    1314. 

  1314.     0x00000010, 0xff004000, 0x00000018, 0xff006100,
    1315. 

  1315.     0x00000020, 0xff008100, 0x00000029, 0xff00a100,
    1316. 

  1316.     0x00000031, 0xff00c200, 0x00000039, 0xff00e200,
    1317. 

  1317.     0x00000041, 0xff080000, 0x0000004a, 0xff082000,
    1318. 

  1318.     0x00000052, 0xff084000, 0x0000005a, 0xff086100,
    1319. 

  1319.     0x00000062, 0xff088100, 0x0000006a, 0xff08a100,
    1320. 

  1320.     0x00000073, 0xff08c200, 0x0000007b, 0xff08e200,
    1321. 

  1321.     0x00000083, 0xff100000, 0x0000008b, 0xff102000,
    1322. 

  1322.     0x00000094, 0xff104000, 0x0000009c, 0xff106100,
    1323. 

  1323.     0x000000a4, 0xff108100, 0x000000ac, 0xff10a100,
    1324. 

  1324.     0x000000b4, 0xff10c200, 0x000000bd, 0xff10e200,
    1325. 

  1325.     0x000000c5, 0xff180000, 0x000000cd, 0xff182000,
    1326. 

  1326.     0x000000d5, 0xff184000, 0x000000de, 0xff186100,
    1327. 

  1327.     0x000000e6, 0xff188100, 0x000000ee, 0xff18a100,
    1328. 

  1328.     0x000000f6, 0xff18c200, 0x000000ff, 0xff18e200,
    1329. 

  1329.     0x00000400, 0xff200000, 0x00000408, 0xff202000,
    1330. 

  1330.     0x00000410, 0xff204000, 0x00000418, 0xff206100,
    1331. 

  1331.     0x00000420, 0xff208100, 0x00000429, 0xff20a100,
    1332. 

  1332.     0x00000431, 0xff20c200, 0x00000439, 0xff20e200,
    1333. 

  1333.     0x00000441, 0xff290000, 0x0000044a, 0xff292000,
    1334. 

  1334.     0x00000452, 0xff294000, 0x0000045a, 0xff296100,
    1335. 

  1335.     0x00000462, 0xff298100, 0x0000046a, 0xff29a100,
    1336. 

  1336.     0x00000473, 0xff29c200, 0x0000047b, 0xff29e200,
    1337. 

  1337.     0x00000483, 0xff310000, 0x0000048b, 0xff312000,
    1338. 

  1338.     0x00000494, 0xff314000, 0x0000049c, 0xff316100,
    1339. 

  1339.     0x000004a4, 0xff318100, 0x000004ac, 0xff31a100,
    1340. 

  1340.     0x000004b4, 0xff31c200, 0x000004bd, 0xff31e200,
    1341. 

  1341.     0x000004c5, 0xff390000, 0x000004cd, 0xff392000,
    1342. 

  1342.     0x000004d5, 0xff394000, 0x000004de, 0xff396100,
    1343. 

  1343.     0x000004e6, 0xff398100, 0x000004ee, 0xff39a100,
    1344. 

  1344.     0x000004f6, 0xff39c200, 0x000004ff, 0xff39e200,
    1345. 

  1345.     0x00000800, 0xff410000, 0x00000808, 0xff412000,
    1346. 

  1346.     0x00000810, 0xff414000, 0x00000818, 0xff416100,
    1347. 

  1347.     0x00000820, 0xff418100, 0x00000829, 0xff41a100,
    1348. 

  1348.     0x00000831, 0xff41c200, 0x00000839, 0xff41e200,
    1349. 

  1349.     0x00000841, 0xff4a0000, 0x0000084a, 0xff4a2000,
    1350. 

  1350.     0x00000852, 0xff4a4000, 0x0000085a, 0xff4a6100,
    1351. 

  1351.     0x00000862, 0xff4a8100, 0x0000086a, 0xff4aa100,
    1352. 

  1352.     0x00000873, 0xff4ac200, 0x0000087b, 0xff4ae200,
    1353. 

  1353.     0x00000883, 0xff520000, 0x0000088b, 0xff522000,
    1354. 

  1354.     0x00000894, 0xff524000, 0x0000089c, 0xff526100,
    1355. 

  1355.     0x000008a4, 0xff528100, 0x000008ac, 0xff52a100,
    1356. 

  1356.     0x000008b4, 0xff52c200, 0x000008bd, 0xff52e200,
    1357. 

  1357.     0x000008c5, 0xff5a0000, 0x000008cd, 0xff5a2000,
    1358. 

  1358.     0x000008d5, 0xff5a4000, 0x000008de, 0xff5a6100,
    1359. 

  1359.     0x000008e6, 0xff5a8100, 0x000008ee, 0xff5aa100,
    1360. 

  1360.     0x000008f6, 0xff5ac200, 0x000008ff, 0xff5ae200,
    1361. 

  1361.     0x00000c00, 0xff620000, 0x00000c08, 0xff622000,
    1362. 

  1362.     0x00000c10, 0xff624000, 0x00000c18, 0xff626100,
    1363. 

  1363.     0x00000c20, 0xff628100, 0x00000c29, 0xff62a100,
    1364. 

  1364.     0x00000c31, 0xff62c200, 0x00000c39, 0xff62e200,
    1365. 

  1365.     0x00000c41, 0xff6a0000, 0x00000c4a, 0xff6a2000,
    1366. 

  1366.     0x00000c52, 0xff6a4000, 0x00000c5a, 0xff6a6100,
    1367. 

  1367.     0x00000c62, 0xff6a8100, 0x00000c6a, 0xff6aa100,
    1368. 

  1368.     0x00000c73, 0xff6ac200, 0x00000c7b, 0xff6ae200,
    1369. 

  1369.     0x00000c83, 0xff730000, 0x00000c8b, 0xff732000,
    1370. 

  1370.     0x00000c94, 0xff734000, 0x00000c9c, 0xff736100,
    1371. 

  1371.     0x00000ca4, 0xff738100, 0x00000cac, 0xff73a100,
    1372. 

  1372.     0x00000cb4, 0xff73c200, 0x00000cbd, 0xff73e200,
    1373. 

  1373.     0x00000cc5, 0xff7b0000, 0x00000ccd, 0xff7b2000,
    1374. 

  1374.     0x00000cd5, 0xff7b4000, 0x00000cde, 0xff7b6100,
    1375. 

  1375.     0x00000ce6, 0xff7b8100, 0x00000cee, 0xff7ba100,
    1376. 

  1376.     0x00000cf6, 0xff7bc200, 0x00000cff, 0xff7be200,
    1377. 

  1377.     0x00001000, 0xff830000, 0x00001008, 0xff832000,
    1378. 

  1378.     0x00001010, 0xff834000, 0x00001018, 0xff836100,
    1379. 

  1379.     0x00001020, 0xff838100, 0x00001029, 0xff83a100,
    1380. 

  1380.     0x00001031, 0xff83c200, 0x00001039, 0xff83e200,
    1381. 

  1381.     0x00001041, 0xff8b0000, 0x0000104a, 0xff8b2000,
    1382. 

  1382.     0x00001052, 0xff8b4000, 0x0000105a, 0xff8b6100,
    1383. 

  1383.     0x00001062, 0xff8b8100, 0x0000106a, 0xff8ba100,
    1384. 

  1384.     0x00001073, 0xff8bc200, 0x0000107b, 0xff8be200,
    1385. 

  1385.     0x00001083, 0xff940000, 0x0000108b, 0xff942000,
    1386. 

  1386.     0x00001094, 0xff944000, 0x0000109c, 0xff946100,
    1387. 

  1387.     0x000010a4, 0xff948100, 0x000010ac, 0xff94a100,
    1388. 

  1388.     0x000010b4, 0xff94c200, 0x000010bd, 0xff94e200,
    1389. 

  1389.     0x000010c5, 0xff9c0000, 0x000010cd, 0xff9c2000,
    1390. 

  1390.     0x000010d5, 0xff9c4000, 0x000010de, 0xff9c6100,
    1391. 

  1391.     0x000010e6, 0xff9c8100, 0x000010ee, 0xff9ca100,
    1392. 

  1392.     0x000010f6, 0xff9cc200, 0x000010ff, 0xff9ce200,
    1393. 

  1393.     0x00001400, 0xffa40000, 0x00001408, 0xffa42000,
    1394. 

  1394.     0x00001410, 0xffa44000, 0x00001418, 0xffa46100,
    1395. 

  1395.     0x00001420, 0xffa48100, 0x00001429, 0xffa4a100,
    1396. 

  1396.     0x00001431, 0xffa4c200, 0x00001439, 0xffa4e200,
    1397. 

  1397.     0x00001441, 0xffac0000, 0x0000144a, 0xffac2000,
    1398. 

  1398.     0x00001452, 0xffac4000, 0x0000145a, 0xffac6100,
    1399. 

  1399.     0x00001462, 0xffac8100, 0x0000146a, 0xffaca100,
    1400. 

  1400.     0x00001473, 0xffacc200, 0x0000147b, 0xfface200,
    1401. 

  1401.     0x00001483, 0xffb40000, 0x0000148b, 0xffb42000,
    1402. 

  1402.     0x00001494, 0xffb44000, 0x0000149c, 0xffb46100,
    1403. 

  1403.     0x000014a4, 0xffb48100, 0x000014ac, 0xffb4a100,
    1404. 

  1404.     0x000014b4, 0xffb4c200, 0x000014bd, 0xffb4e200,
    1405. 

  1405.     0x000014c5, 0xffbd0000, 0x000014cd, 0xffbd2000,
    1406. 

  1406.     0x000014d5, 0xffbd4000, 0x000014de, 0xffbd6100,
    1407. 

  1407.     0x000014e6, 0xffbd8100, 0x000014ee, 0xffbda100,
    1408. 

  1408.     0x000014f6, 0xffbdc200, 0x000014ff, 0xffbde200,
    1409. 

  1409.     0x00001800, 0xffc50000, 0x00001808, 0xffc52000,
    1410. 

  1410.     0x00001810, 0xffc54000, 0x00001818, 0xffc56100,
    1411. 

  1411.     0x00001820, 0xffc58100, 0x00001829, 0xffc5a100,
    1412. 

  1412.     0x00001831, 0xffc5c200, 0x00001839, 0xffc5e200,
    1413. 

  1413.     0x00001841, 0xffcd0000, 0x0000184a, 0xffcd2000,
    1414. 

  1414.     0x00001852, 0xffcd4000, 0x0000185a, 0xffcd6100,
    1415. 

  1415.     0x00001862, 0xffcd8100, 0x0000186a, 0xffcda100,
    1416. 

  1416.     0x00001873, 0xffcdc200, 0x0000187b, 0xffcde200,
    1417. 

  1417.     0x00001883, 0xffd50000, 0x0000188b, 0xffd52000,
    1418. 

  1418.     0x00001894, 0xffd54000, 0x0000189c, 0xffd56100,
    1419. 

  1419.     0x000018a4, 0xffd58100, 0x000018ac, 0xffd5a100,
    1420. 

  1420.     0x000018b4, 0xffd5c200, 0x000018bd, 0xffd5e200,
    1421. 

  1421.     0x000018c5, 0xffde0000, 0x000018cd, 0xffde2000,
    1422. 

  1422.     0x000018d5, 0xffde4000, 0x000018de, 0xffde6100,
    1423. 

  1423.     0x000018e6, 0xffde8100, 0x000018ee, 0xffdea100,
    1424. 

  1424.     0x000018f6, 0xffdec200, 0x000018ff, 0xffdee200,
    1425. 

  1425.     0x00001c00, 0xffe60000, 0x00001c08, 0xffe62000,
    1426. 

  1426.     0x00001c10, 0xffe64000, 0x00001c18, 0xffe66100,
    1427. 

  1427.     0x00001c20, 0xffe68100, 0x00001c29, 0xffe6a100,
    1428. 

  1428.     0x00001c31, 0xffe6c200, 0x00001c39, 0xffe6e200,
    1429. 

  1429.     0x00001c41, 0xffee0000, 0x00001c4a, 0xffee2000,
    1430. 

  1430.     0x00001c52, 0xffee4000, 0x00001c5a, 0xffee6100,
    1431. 

  1431.     0x00001c62, 0xffee8100, 0x00001c6a, 0xffeea100,
    1432. 

  1432.     0x00001c73, 0xffeec200, 0x00001c7b, 0xffeee200,
    1433. 

  1433.     0x00001c83, 0xfff60000, 0x00001c8b, 0xfff62000,
    1434. 

  1434.     0x00001c94, 0xfff64000, 0x00001c9c, 0xfff66100,
    1435. 

  1435.     0x00001ca4, 0xfff68100, 0x00001cac, 0xfff6a100,
    1436. 

  1436.     0x00001cb4, 0xfff6c200, 0x00001cbd, 0xfff6e200,
    1437. 

  1437.     0x00001cc5, 0xffff0000, 0x00001ccd, 0xffff2000,
    1438. 

  1438.     0x00001cd5, 0xffff4000, 0x00001cde, 0xffff6100,
    1439. 

  1439.     0x00001ce6, 0xffff8100, 0x00001cee, 0xffffa100,
    1440. 

  1440.     0x00001cf6, 0xffffc200, 0x00001cff, 0xffffe200
    1441. 

  1441. };
    1442. 

  1442. 

  1443. static void
    1444. 

  1444. Blit_RGB565_ARGB8888(SDL_BlitInfo * info)
    1445. 

  1445. {
    1446. 

  1446.     Blit_RGB565_32(info, RGB565_ARGB8888_LUT);
    1447. 

  1447. }
    1448. 

  1448. 

  1449. /* Special optimized blit for RGB 5-6-5 --> ABGR 8-8-8-8 */
    1450. 

  1450. static const Uint32 RGB565_ABGR8888_LUT[512] = {
    1451. 

  1451.     0xff000000, 0x00000000, 0xff080000, 0x00002000,
    1452. 

  1452.     0xff100000, 0x00004000, 0xff180000, 0x00006100,
    1453. 

  1453.     0xff200000, 0x00008100, 0xff290000, 0x0000a100,
    1454. 

  1454.     0xff310000, 0x0000c200, 0xff390000, 0x0000e200,
    1455. 

  1455.     0xff410000, 0x00000008, 0xff4a0000, 0x00002008,
    1456. 

  1456.     0xff520000, 0x00004008, 0xff5a0000, 0x00006108,
    1457. 

  1457.     0xff620000, 0x00008108, 0xff6a0000, 0x0000a108,
    1458. 

  1458.     0xff730000, 0x0000c208, 0xff7b0000, 0x0000e208,
    1459. 

  1459.     0xff830000, 0x00000010, 0xff8b0000, 0x00002010,
    1460. 

  1460.     0xff940000, 0x00004010, 0xff9c0000, 0x00006110,
    1461. 

  1461.     0xffa40000, 0x00008110, 0xffac0000, 0x0000a110,
    1462. 

  1462.     0xffb40000, 0x0000c210, 0xffbd0000, 0x0000e210,
    1463. 

  1463.     0xffc50000, 0x00000018, 0xffcd0000, 0x00002018,
    1464. 

  1464.     0xffd50000, 0x00004018, 0xffde0000, 0x00006118,
    1465. 

  1465.     0xffe60000, 0x00008118, 0xffee0000, 0x0000a118,
    1466. 

  1466.     0xfff60000, 0x0000c218, 0xffff0000, 0x0000e…
    1467.