| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | #include "SDL_video.h" |
| 25 | #include "SDL_blit.h" |
| 26 | |
| 27 | /* |
| 28 | In Visual C, VC6 has mmintrin.h in the "Processor Pack" add-on. |
| 29 | Checking if _mm_free is #defined in malloc.h is is the only way to |
| 30 | determine if the Processor Pack is installed, as far as I can tell. |
| 31 | */ |
| 32 | |
| 33 | #if SDL_ASSEMBLY_ROUTINES |
| 34 | # if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) |
| 35 | # define MMX_ASMBLIT 1 |
| 36 | # define GCC_ASMBLIT 1 |
| 37 | # elif defined(_MSC_VER) && defined(_M_IX86) |
| 38 | # if (_MSC_VER <= 1200) |
| 39 | # include <malloc.h> |
| 40 | # if defined(_mm_free) |
| 41 | # define HAVE_MMINTRIN_H 1 |
| 42 | # endif |
| 43 | # else /* Visual Studio > VC6 always has mmintrin.h */ |
| 44 | # define HAVE_MMINTRIN_H 1 |
| 45 | # endif |
| 46 | # if HAVE_MMINTRIN_H |
| 47 | # define MMX_ASMBLIT 1 |
| 48 | # define MSVC_ASMBLIT 1 |
| 49 | # endif |
| 50 | # endif |
| 51 | #endif /* SDL_ASSEMBLY_ROUTINES */ |
| 52 | |
| 53 | /* Function to check the CPU flags */ |
| 54 | #include "SDL_cpuinfo.h" |
| 55 | #if GCC_ASMBLIT |
| 56 | #include "mmx.h" |
| 57 | #elif MSVC_ASMBLIT |
| 58 | #include <mmintrin.h> |
| 59 | #include <mm3dnow.h> |
| 60 | #endif |
| 61 | |
| 62 | /* Functions to perform alpha blended blitting */ |
| 63 | |
| 64 | /* N->1 blending with per-surface alpha */ |
| 65 | static void BlitNto1SurfaceAlpha(SDL_BlitInfo *info) |
| 66 | { |
| 67 | int width = info->d_width; |
| 68 | int height = info->d_height; |
| 69 | Uint8 *src = info->s_pixels; |
| 70 | int srcskip = info->s_skip; |
| 71 | Uint8 *dst = info->d_pixels; |
| 72 | int dstskip = info->d_skip; |
| 73 | Uint8 *palmap = info->table; |
| 74 | SDL_PixelFormat *srcfmt = info->src; |
| 75 | SDL_PixelFormat *dstfmt = info->dst; |
| 76 | int srcbpp = srcfmt->BytesPerPixel; |
| 77 | |
| 78 | const unsigned A = srcfmt->alpha; |
| 79 | |
| 80 | while ( height-- ) { |
| 81 | DUFFS_LOOP4( |
| 82 | { |
| 83 | Uint32 Pixel; |
| 84 | unsigned sR; |
| 85 | unsigned sG; |
| 86 | unsigned sB; |
| 87 | unsigned dR; |
| 88 | unsigned dG; |
| 89 | unsigned dB; |
| 90 | DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel, sR, sG, sB); |
| 91 | dR = dstfmt->palette->colors[*dst].r; |
| 92 | dG = dstfmt->palette->colors[*dst].g; |
| 93 | dB = dstfmt->palette->colors[*dst].b; |
| 94 | ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); |
| 95 | dR &= 0xff; |
| 96 | dG &= 0xff; |
| 97 | dB &= 0xff; |
| 98 | /* Pack RGB into 8bit pixel */ |
| 99 | if ( palmap == NULL ) { |
| 100 | *dst =((dR>>5)<<(3+2))| |
| 101 | ((dG>>5)<<(2))| |
| 102 | ((dB>>6)<<(0)); |
| 103 | } else { |
| 104 | *dst = palmap[((dR>>5)<<(3+2))| |
| 105 | ((dG>>5)<<(2)) | |
| 106 | ((dB>>6)<<(0))]; |
| 107 | } |
| 108 | dst++; |
| 109 | src += srcbpp; |
| 110 | }, |
| 111 | width); |
| 112 | src += srcskip; |
| 113 | dst += dstskip; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | /* N->1 blending with pixel alpha */ |
| 118 | static void BlitNto1PixelAlpha(SDL_BlitInfo *info) |
| 119 | { |
| 120 | int width = info->d_width; |
| 121 | int height = info->d_height; |
| 122 | Uint8 *src = info->s_pixels; |
| 123 | int srcskip = info->s_skip; |
| 124 | Uint8 *dst = info->d_pixels; |
| 125 | int dstskip = info->d_skip; |
| 126 | Uint8 *palmap = info->table; |
| 127 | SDL_PixelFormat *srcfmt = info->src; |
| 128 | SDL_PixelFormat *dstfmt = info->dst; |
| 129 | int srcbpp = srcfmt->BytesPerPixel; |
| 130 | |
| 131 | /* FIXME: fix alpha bit field expansion here too? */ |
| 132 | while ( height-- ) { |
| 133 | DUFFS_LOOP4( |
| 134 | { |
| 135 | Uint32 Pixel; |
| 136 | unsigned sR; |
| 137 | unsigned sG; |
| 138 | unsigned sB; |
| 139 | unsigned sA; |
| 140 | unsigned dR; |
| 141 | unsigned dG; |
| 142 | unsigned dB; |
| 143 | DISEMBLE_RGBA(src,srcbpp,srcfmt,Pixel,sR,sG,sB,sA); |
| 144 | dR = dstfmt->palette->colors[*dst].r; |
| 145 | dG = dstfmt->palette->colors[*dst].g; |
| 146 | dB = dstfmt->palette->colors[*dst].b; |
| 147 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
| 148 | dR &= 0xff; |
| 149 | dG &= 0xff; |
| 150 | dB &= 0xff; |
| 151 | /* Pack RGB into 8bit pixel */ |
| 152 | if ( palmap == NULL ) { |
| 153 | *dst =((dR>>5)<<(3+2))| |
| 154 | ((dG>>5)<<(2))| |
| 155 | ((dB>>6)<<(0)); |
| 156 | } else { |
| 157 | *dst = palmap[((dR>>5)<<(3+2))| |
| 158 | ((dG>>5)<<(2)) | |
| 159 | ((dB>>6)<<(0)) ]; |
| 160 | } |
| 161 | dst++; |
| 162 | src += srcbpp; |
| 163 | }, |
| 164 | width); |
| 165 | src += srcskip; |
| 166 | dst += dstskip; |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /* colorkeyed N->1 blending with per-surface alpha */ |
| 171 | static void BlitNto1SurfaceAlphaKey(SDL_BlitInfo *info) |
| 172 | { |
| 173 | int width = info->d_width; |
| 174 | int height = info->d_height; |
| 175 | Uint8 *src = info->s_pixels; |
| 176 | int srcskip = info->s_skip; |
| 177 | Uint8 *dst = info->d_pixels; |
| 178 | int dstskip = info->d_skip; |
| 179 | Uint8 *palmap = info->table; |
| 180 | SDL_PixelFormat *srcfmt = info->src; |
| 181 | SDL_PixelFormat *dstfmt = info->dst; |
| 182 | int srcbpp = srcfmt->BytesPerPixel; |
| 183 | Uint32 ckey = srcfmt->colorkey; |
| 184 | |
| 185 | const int A = srcfmt->alpha; |
| 186 | |
| 187 | while ( height-- ) { |
| 188 | DUFFS_LOOP( |
| 189 | { |
| 190 | Uint32 Pixel; |
| 191 | unsigned sR; |
| 192 | unsigned sG; |
| 193 | unsigned sB; |
| 194 | unsigned dR; |
| 195 | unsigned dG; |
| 196 | unsigned dB; |
| 197 | DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel, sR, sG, sB); |
| 198 | if ( Pixel != ckey ) { |
| 199 | dR = dstfmt->palette->colors[*dst].r; |
| 200 | dG = dstfmt->palette->colors[*dst].g; |
| 201 | dB = dstfmt->palette->colors[*dst].b; |
| 202 | ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); |
| 203 | dR &= 0xff; |
| 204 | dG &= 0xff; |
| 205 | dB &= 0xff; |
| 206 | /* Pack RGB into 8bit pixel */ |
| 207 | if ( palmap == NULL ) { |
| 208 | *dst =((dR>>5)<<(3+2))| |
| 209 | ((dG>>5)<<(2)) | |
| 210 | ((dB>>6)<<(0)); |
| 211 | } else { |
| 212 | *dst = palmap[((dR>>5)<<(3+2))| |
| 213 | ((dG>>5)<<(2)) | |
| 214 | ((dB>>6)<<(0)) ]; |
| 215 | } |
| 216 | } |
| 217 | dst++; |
| 218 | src += srcbpp; |
| 219 | }, |
| 220 | width); |
| 221 | src += srcskip; |
| 222 | dst += dstskip; |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | #if GCC_ASMBLIT |
| 227 | /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
| 228 | static void BlitRGBtoRGBSurfaceAlpha128MMX(SDL_BlitInfo *info) |
| 229 | { |
| 230 | int width = info->d_width; |
| 231 | int height = info->d_height; |
| 232 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 233 | int srcskip = info->s_skip >> 2; |
| 234 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 235 | int dstskip = info->d_skip >> 2; |
| 236 | Uint32 dalpha = info->dst->Amask; |
| 237 | Uint64 load; |
| 238 | |
| 239 | load = 0x00fefefe00fefefeULL;/* alpha128 mask */ |
| 240 | movq_m2r(load, mm4); /* alpha128 mask -> mm4 */ |
| 241 | load = 0x0001010100010101ULL;/* !alpha128 mask */ |
| 242 | movq_m2r(load, mm3); /* !alpha128 mask -> mm3 */ |
| 243 | movd_m2r(dalpha, mm7); /* dst alpha mask */ |
| 244 | punpckldq_r2r(mm7, mm7); /* dst alpha mask | dst alpha mask -> mm7 */ |
| 245 | while(height--) { |
| 246 | DUFFS_LOOP_DOUBLE2( |
| 247 | { |
| 248 | Uint32 s = *srcp++; |
| 249 | Uint32 d = *dstp; |
| 250 | *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
| 251 | + (s & d & 0x00010101)) | dalpha; |
| 252 | },{ |
| 253 | movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */ |
| 254 | movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */ |
| 255 | |
| 256 | movq_m2r((*srcp), mm1);/* 2 x src -> mm1(ARGBARGB) */ |
| 257 | movq_r2r(mm1, mm5); /* 2 x src -> mm5(ARGBARGB) */ |
| 258 | |
| 259 | pand_r2r(mm4, mm6); /* dst & mask -> mm6 */ |
| 260 | pand_r2r(mm4, mm5); /* src & mask -> mm5 */ |
| 261 | paddd_r2r(mm6, mm5); /* mm6 + mm5 -> mm5 */ |
| 262 | pand_r2r(mm1, mm2); /* src & dst -> mm2 */ |
| 263 | psrld_i2r(1, mm5); /* mm5 >> 1 -> mm5 */ |
| 264 | pand_r2r(mm3, mm2); /* mm2 & !mask -> mm2 */ |
| 265 | paddd_r2r(mm5, mm2); /* mm5 + mm2 -> mm2 */ |
| 266 | |
| 267 | por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
| 268 | movq_r2m(mm2, (*dstp));/* mm2 -> 2 x dst pixels */ |
| 269 | dstp += 2; |
| 270 | srcp += 2; |
| 271 | }, width); |
| 272 | srcp += srcskip; |
| 273 | dstp += dstskip; |
| 274 | } |
| 275 | emms(); |
| 276 | } |
| 277 | |
| 278 | /* fast RGB888->(A)RGB888 blending with surface alpha */ |
| 279 | static void BlitRGBtoRGBSurfaceAlphaMMX(SDL_BlitInfo *info) |
| 280 | { |
| 281 | SDL_PixelFormat* df = info->dst; |
| 282 | unsigned alpha = info->src->alpha; |
| 283 | |
| 284 | if (alpha == 128 && (df->Rmask | df->Gmask | df->Bmask) == 0x00FFFFFF) { |
| 285 | /* only call a128 version when R,G,B occupy lower bits */ |
| 286 | BlitRGBtoRGBSurfaceAlpha128MMX(info); |
| 287 | } else { |
| 288 | int width = info->d_width; |
| 289 | int height = info->d_height; |
| 290 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 291 | int srcskip = info->s_skip >> 2; |
| 292 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 293 | int dstskip = info->d_skip >> 2; |
| 294 | |
| 295 | pxor_r2r(mm5, mm5); /* 0 -> mm5 */ |
| 296 | /* form the alpha mult */ |
| 297 | movd_m2r(alpha, mm4); /* 0000000A -> mm4 */ |
| 298 | punpcklwd_r2r(mm4, mm4); /* 00000A0A -> mm4 */ |
| 299 | punpckldq_r2r(mm4, mm4); /* 0A0A0A0A -> mm4 */ |
| 300 | alpha = (0xff << df->Rshift) | (0xff << df->Gshift) | (0xff << df->Bshift); |
| 301 | movd_m2r(alpha, mm0); /* 00000FFF -> mm0 */ |
| 302 | punpcklbw_r2r(mm0, mm0); /* 00FFFFFF -> mm0 */ |
| 303 | pand_r2r(mm0, mm4); /* 0A0A0A0A -> mm4, minus 1 chan */ |
| 304 | /* at this point mm4 can be 000A0A0A or 0A0A0A00 or another combo */ |
| 305 | movd_m2r(df->Amask, mm7); /* dst alpha mask */ |
| 306 | punpckldq_r2r(mm7, mm7); /* dst alpha mask | dst alpha mask -> mm7 */ |
| 307 | |
| 308 | while(height--) { |
| 309 | DUFFS_LOOP_DOUBLE2({ |
| 310 | /* One Pixel Blend */ |
| 311 | movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
| 312 | movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
| 313 | punpcklbw_r2r(mm5, mm1); /* 0A0R0G0B -> mm1(src) */ |
| 314 | punpcklbw_r2r(mm5, mm2); /* 0A0R0G0B -> mm2(dst) */ |
| 315 | |
| 316 | psubw_r2r(mm2, mm1);/* src - dst -> mm1 */ |
| 317 | pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
| 318 | psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */ |
| 319 | paddb_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */ |
| 320 | |
| 321 | packuswb_r2r(mm5, mm2); /* ARGBARGB -> mm2 */ |
| 322 | por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
| 323 | movd_r2m(mm2, *dstp);/* mm2 -> pixel */ |
| 324 | ++srcp; |
| 325 | ++dstp; |
| 326 | },{ |
| 327 | /* Two Pixels Blend */ |
| 328 | movq_m2r((*srcp), mm0);/* 2 x src -> mm0(ARGBARGB)*/ |
| 329 | movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */ |
| 330 | movq_r2r(mm0, mm1); /* 2 x src -> mm1(ARGBARGB) */ |
| 331 | movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */ |
| 332 | |
| 333 | punpcklbw_r2r(mm5, mm0); /* low - 0A0R0G0B -> mm0(src1) */ |
| 334 | punpckhbw_r2r(mm5, mm1); /* high - 0A0R0G0B -> mm1(src2) */ |
| 335 | punpcklbw_r2r(mm5, mm2); /* low - 0A0R0G0B -> mm2(dst1) */ |
| 336 | punpckhbw_r2r(mm5, mm6); /* high - 0A0R0G0B -> mm6(dst2) */ |
| 337 | |
| 338 | psubw_r2r(mm2, mm0);/* src1 - dst1 -> mm0 */ |
| 339 | pmullw_r2r(mm4, mm0); /* mm0 * alpha -> mm0 */ |
| 340 | psrlw_i2r(8, mm0); /* mm0 >> 8 -> mm1 */ |
| 341 | paddb_r2r(mm0, mm2); /* mm0 + mm2(dst1) -> mm2 */ |
| 342 | |
| 343 | psubw_r2r(mm6, mm1);/* src2 - dst2 -> mm1 */ |
| 344 | pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
| 345 | psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */ |
| 346 | paddb_r2r(mm1, mm6); /* mm1 + mm6(dst2) -> mm6 */ |
| 347 | |
| 348 | packuswb_r2r(mm6, mm2); /* ARGBARGB -> mm2 */ |
| 349 | por_r2r(mm7, mm2); /* mm7(dst alpha) | mm2 -> mm2 */ |
| 350 | |
| 351 | movq_r2m(mm2, *dstp);/* mm2 -> 2 x pixel */ |
| 352 | |
| 353 | srcp += 2; |
| 354 | dstp += 2; |
| 355 | }, width); |
| 356 | srcp += srcskip; |
| 357 | dstp += dstskip; |
| 358 | } |
| 359 | emms(); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
| 364 | static void BlitRGBtoRGBPixelAlphaMMX(SDL_BlitInfo *info) |
| 365 | { |
| 366 | int width = info->d_width; |
| 367 | int height = info->d_height; |
| 368 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 369 | int srcskip = info->s_skip >> 2; |
| 370 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 371 | int dstskip = info->d_skip >> 2; |
| 372 | SDL_PixelFormat* sf = info->src; |
| 373 | Uint32 amask = sf->Amask; |
| 374 | |
| 375 | pxor_r2r(mm6, mm6); /* 0 -> mm6 */ |
| 376 | /* form multiplication mask */ |
| 377 | movd_m2r(sf->Amask, mm7); /* 0000F000 -> mm7 */ |
| 378 | punpcklbw_r2r(mm7, mm7); /* FF000000 -> mm7 */ |
| 379 | pcmpeqb_r2r(mm0, mm0); /* FFFFFFFF -> mm0 */ |
| 380 | movq_r2r(mm0, mm3); /* FFFFFFFF -> mm3 (for later) */ |
| 381 | pxor_r2r(mm0, mm7); /* 00FFFFFF -> mm7 (mult mask) */ |
| 382 | /* form channel masks */ |
| 383 | movq_r2r(mm7, mm0); /* 00FFFFFF -> mm0 */ |
| 384 | packsswb_r2r(mm6, mm0); /* 00000FFF -> mm0 (channel mask) */ |
| 385 | packsswb_r2r(mm6, mm3); /* 0000FFFF -> mm3 */ |
| 386 | pxor_r2r(mm0, mm3); /* 0000F000 -> mm3 (~channel mask) */ |
| 387 | /* get alpha channel shift */ |
| 388 | __asm__ __volatile__ ( |
| 389 | "movd %0, %%mm5" |
| 390 | : : "rm" ((Uint32) sf->Ashift) ); /* Ashift -> mm5 */ |
| 391 | |
| 392 | while(height--) { |
| 393 | DUFFS_LOOP4({ |
| 394 | Uint32 alpha = *srcp & amask; |
| 395 | /* FIXME: Here we special-case opaque alpha since the |
| 396 | compositioning used (>>8 instead of /255) doesn't handle |
| 397 | it correctly. Also special-case alpha=0 for speed? |
| 398 | Benchmark this! */ |
| 399 | if(alpha == 0) { |
| 400 | /* do nothing */ |
| 401 | } else if(alpha == amask) { |
| 402 | /* opaque alpha -- copy RGB, keep dst alpha */ |
| 403 | /* using MMX here to free up regular registers for other things */ |
| 404 | movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
| 405 | movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
| 406 | pand_r2r(mm0, mm1); /* src & chanmask -> mm1 */ |
| 407 | pand_r2r(mm3, mm2); /* dst & ~chanmask -> mm2 */ |
| 408 | por_r2r(mm1, mm2); /* src | dst -> mm2 */ |
| 409 | movd_r2m(mm2, (*dstp)); /* mm2 -> dst */ |
| 410 | } else { |
| 411 | movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
| 412 | punpcklbw_r2r(mm6, mm1); /* 0A0R0G0B -> mm1 */ |
| 413 | |
| 414 | movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
| 415 | punpcklbw_r2r(mm6, mm2); /* 0A0R0G0B -> mm2 */ |
| 416 | |
| 417 | __asm__ __volatile__ ( |
| 418 | "movd %0, %%mm4" |
| 419 | : : "r" (alpha) ); /* 0000A000 -> mm4 */ |
| 420 | psrld_r2r(mm5, mm4); /* mm4 >> mm5 -> mm4 (0000000A) */ |
| 421 | punpcklwd_r2r(mm4, mm4); /* 00000A0A -> mm4 */ |
| 422 | punpcklwd_r2r(mm4, mm4); /* 0A0A0A0A -> mm4 */ |
| 423 | pand_r2r(mm7, mm4); /* 000A0A0A -> mm4, preserve dst alpha on add */ |
| 424 | |
| 425 | /* blend */ |
| 426 | psubw_r2r(mm2, mm1);/* src - dst -> mm1 */ |
| 427 | pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
| 428 | psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1(000R0G0B) */ |
| 429 | paddb_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */ |
| 430 | |
| 431 | packuswb_r2r(mm6, mm2); /* 0000ARGB -> mm2 */ |
| 432 | movd_r2m(mm2, *dstp);/* mm2 -> dst */ |
| 433 | } |
| 434 | ++srcp; |
| 435 | ++dstp; |
| 436 | }, width); |
| 437 | srcp += srcskip; |
| 438 | dstp += dstskip; |
| 439 | } |
| 440 | emms(); |
| 441 | } |
| 442 | /* End GCC_ASMBLIT */ |
| 443 | |
| 444 | #elif MSVC_ASMBLIT |
| 445 | /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
| 446 | static void BlitRGBtoRGBSurfaceAlpha128MMX(SDL_BlitInfo *info) |
| 447 | { |
| 448 | int width = info->d_width; |
| 449 | int height = info->d_height; |
| 450 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 451 | int srcskip = info->s_skip >> 2; |
| 452 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 453 | int dstskip = info->d_skip >> 2; |
| 454 | Uint32 dalpha = info->dst->Amask; |
| 455 | |
| 456 | __m64 src1, src2, dst1, dst2, lmask, hmask, dsta; |
| 457 | |
| 458 | hmask = _mm_set_pi32(0x00fefefe, 0x00fefefe); /* alpha128 mask -> hmask */ |
| 459 | lmask = _mm_set_pi32(0x00010101, 0x00010101); /* !alpha128 mask -> lmask */ |
| 460 | dsta = _mm_set_pi32(dalpha, dalpha); /* dst alpha mask -> dsta */ |
| 461 | |
| 462 | while (height--) { |
| 463 | int n = width; |
| 464 | if ( n & 1 ) { |
| 465 | Uint32 s = *srcp++; |
| 466 | Uint32 d = *dstp; |
| 467 | *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
| 468 | + (s & d & 0x00010101)) | dalpha; |
| 469 | n--; |
| 470 | } |
| 471 | |
| 472 | for (n >>= 1; n > 0; --n) { |
| 473 | dst1 = *(__m64*)dstp; /* 2 x dst -> dst1(ARGBARGB) */ |
| 474 | dst2 = dst1; /* 2 x dst -> dst2(ARGBARGB) */ |
| 475 | |
| 476 | src1 = *(__m64*)srcp; /* 2 x src -> src1(ARGBARGB) */ |
| 477 | src2 = src1; /* 2 x src -> src2(ARGBARGB) */ |
| 478 | |
| 479 | dst2 = _mm_and_si64(dst2, hmask); /* dst & mask -> dst2 */ |
| 480 | src2 = _mm_and_si64(src2, hmask); /* src & mask -> src2 */ |
| 481 | src2 = _mm_add_pi32(src2, dst2); /* dst2 + src2 -> src2 */ |
| 482 | src2 = _mm_srli_pi32(src2, 1); /* src2 >> 1 -> src2 */ |
| 483 | |
| 484 | dst1 = _mm_and_si64(dst1, src1); /* src & dst -> dst1 */ |
| 485 | dst1 = _mm_and_si64(dst1, lmask); /* dst1 & !mask -> dst1 */ |
| 486 | dst1 = _mm_add_pi32(dst1, src2); /* src2 + dst1 -> dst1 */ |
| 487 | dst1 = _mm_or_si64(dst1, dsta); /* dsta(full alpha) | dst1 -> dst1 */ |
| 488 | |
| 489 | *(__m64*)dstp = dst1; /* dst1 -> 2 x dst pixels */ |
| 490 | dstp += 2; |
| 491 | srcp += 2; |
| 492 | } |
| 493 | |
| 494 | srcp += srcskip; |
| 495 | dstp += dstskip; |
| 496 | } |
| 497 | _mm_empty(); |
| 498 | } |
| 499 | |
| 500 | /* fast RGB888->(A)RGB888 blending with surface alpha */ |
| 501 | static void BlitRGBtoRGBSurfaceAlphaMMX(SDL_BlitInfo *info) |
| 502 | { |
| 503 | SDL_PixelFormat* df = info->dst; |
| 504 | Uint32 chanmask = df->Rmask | df->Gmask | df->Bmask; |
| 505 | unsigned alpha = info->src->alpha; |
| 506 | |
| 507 | if (alpha == 128 && (df->Rmask | df->Gmask | df->Bmask) == 0x00FFFFFF) { |
| 508 | /* only call a128 version when R,G,B occupy lower bits */ |
| 509 | BlitRGBtoRGBSurfaceAlpha128MMX(info); |
| 510 | } else { |
| 511 | int width = info->d_width; |
| 512 | int height = info->d_height; |
| 513 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 514 | int srcskip = info->s_skip >> 2; |
| 515 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 516 | int dstskip = info->d_skip >> 2; |
| 517 | Uint32 dalpha = df->Amask; |
| 518 | Uint32 amult; |
| 519 | |
| 520 | __m64 src1, src2, dst1, dst2, mm_alpha, mm_zero, dsta; |
| 521 | |
| 522 | mm_zero = _mm_setzero_si64(); /* 0 -> mm_zero */ |
| 523 | /* form the alpha mult */ |
| 524 | amult = alpha | (alpha << 8); |
| 525 | amult = amult | (amult << 16); |
| 526 | chanmask = (0xff << df->Rshift) | (0xff << df->Gshift) | (0xff << df->Bshift); |
| 527 | mm_alpha = _mm_set_pi32(0, amult & chanmask); /* 0000AAAA -> mm_alpha, minus 1 chan */ |
| 528 | mm_alpha = _mm_unpacklo_pi8(mm_alpha, mm_zero); /* 0A0A0A0A -> mm_alpha, minus 1 chan */ |
| 529 | /* at this point mm_alpha can be 000A0A0A or 0A0A0A00 or another combo */ |
| 530 | dsta = _mm_set_pi32(dalpha, dalpha); /* dst alpha mask -> dsta */ |
| 531 | |
| 532 | while (height--) { |
| 533 | int n = width; |
| 534 | if (n & 1) { |
| 535 | /* One Pixel Blend */ |
| 536 | src2 = _mm_cvtsi32_si64(*srcp); /* src(ARGB) -> src2 (0000ARGB)*/ |
| 537 | src2 = _mm_unpacklo_pi8(src2, mm_zero); /* 0A0R0G0B -> src2 */ |
| 538 | |
| 539 | dst1 = _mm_cvtsi32_si64(*dstp); /* dst(ARGB) -> dst1 (0000ARGB)*/ |
| 540 | dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* 0A0R0G0B -> dst1 */ |
| 541 | |
| 542 | src2 = _mm_sub_pi16(src2, dst1); /* src2 - dst2 -> src2 */ |
| 543 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| 544 | src2 = _mm_srli_pi16(src2, 8); /* src2 >> 8 -> src2 */ |
| 545 | dst1 = _mm_add_pi8(src2, dst1); /* src2 + dst1 -> dst1 */ |
| 546 | |
| 547 | dst1 = _mm_packs_pu16(dst1, mm_zero); /* 0000ARGB -> dst1 */ |
| 548 | dst1 = _mm_or_si64(dst1, dsta); /* dsta | dst1 -> dst1 */ |
| 549 | *dstp = _mm_cvtsi64_si32(dst1); /* dst1 -> pixel */ |
| 550 | |
| 551 | ++srcp; |
| 552 | ++dstp; |
| 553 | |
| 554 | n--; |
| 555 | } |
| 556 | |
| 557 | for (n >>= 1; n > 0; --n) { |
| 558 | /* Two Pixels Blend */ |
| 559 | src1 = *(__m64*)srcp; /* 2 x src -> src1(ARGBARGB)*/ |
| 560 | src2 = src1; /* 2 x src -> src2(ARGBARGB) */ |
| 561 | src1 = _mm_unpacklo_pi8(src1, mm_zero); /* low - 0A0R0G0B -> src1 */ |
| 562 | src2 = _mm_unpackhi_pi8(src2, mm_zero); /* high - 0A0R0G0B -> src2 */ |
| 563 | |
| 564 | dst1 = *(__m64*)dstp;/* 2 x dst -> dst1(ARGBARGB) */ |
| 565 | dst2 = dst1; /* 2 x dst -> dst2(ARGBARGB) */ |
| 566 | dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* low - 0A0R0G0B -> dst1 */ |
| 567 | dst2 = _mm_unpackhi_pi8(dst2, mm_zero); /* high - 0A0R0G0B -> dst2 */ |
| 568 | |
| 569 | src1 = _mm_sub_pi16(src1, dst1);/* src1 - dst1 -> src1 */ |
| 570 | src1 = _mm_mullo_pi16(src1, mm_alpha); /* src1 * alpha -> src1 */ |
| 571 | src1 = _mm_srli_pi16(src1, 8); /* src1 >> 8 -> src1 */ |
| 572 | dst1 = _mm_add_pi8(src1, dst1); /* src1 + dst1(dst1) -> dst1 */ |
| 573 | |
| 574 | src2 = _mm_sub_pi16(src2, dst2);/* src2 - dst2 -> src2 */ |
| 575 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| 576 | src2 = _mm_srli_pi16(src2, 8); /* src2 >> 8 -> src2 */ |
| 577 | dst2 = _mm_add_pi8(src2, dst2); /* src2 + dst2(dst2) -> dst2 */ |
| 578 | |
| 579 | dst1 = _mm_packs_pu16(dst1, dst2); /* 0A0R0G0B(res1), 0A0R0G0B(res2) -> dst1(ARGBARGB) */ |
| 580 | dst1 = _mm_or_si64(dst1, dsta); /* dsta | dst1 -> dst1 */ |
| 581 | |
| 582 | *(__m64*)dstp = dst1; /* dst1 -> 2 x pixel */ |
| 583 | |
| 584 | srcp += 2; |
| 585 | dstp += 2; |
| 586 | } |
| 587 | srcp += srcskip; |
| 588 | dstp += dstskip; |
| 589 | } |
| 590 | _mm_empty(); |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
| 595 | static void BlitRGBtoRGBPixelAlphaMMX(SDL_BlitInfo *info) |
| 596 | { |
| 597 | int width = info->d_width; |
| 598 | int height = info->d_height; |
| 599 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 600 | int srcskip = info->s_skip >> 2; |
| 601 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 602 | int dstskip = info->d_skip >> 2; |
| 603 | SDL_PixelFormat* sf = info->src; |
| 604 | Uint32 chanmask = sf->Rmask | sf->Gmask | sf->Bmask; |
| 605 | Uint32 amask = sf->Amask; |
| 606 | Uint32 ashift = sf->Ashift; |
| 607 | Uint64 multmask; |
| 608 | |
| 609 | __m64 src1, dst1, mm_alpha, mm_zero, dmask; |
| 610 | |
| 611 | mm_zero = _mm_setzero_si64(); /* 0 -> mm_zero */ |
| 612 | multmask = ~(0xFFFFi64 << (ashift * 2)); |
| 613 | dmask = *(__m64*) &multmask; /* dst alpha mask -> dmask */ |
| 614 | |
| 615 | while(height--) { |
| 616 | DUFFS_LOOP4({ |
| 617 | Uint32 alpha = *srcp & amask; |
| 618 | if (alpha == 0) { |
| 619 | /* do nothing */ |
| 620 | } else if (alpha == amask) { |
| 621 | /* opaque alpha -- copy RGB, keep dst alpha */ |
| 622 | *dstp = (*srcp & chanmask) | (*dstp & ~chanmask); |
| 623 | } else { |
| 624 | src1 = _mm_cvtsi32_si64(*srcp); /* src(ARGB) -> src1 (0000ARGB)*/ |
| 625 | src1 = _mm_unpacklo_pi8(src1, mm_zero); /* 0A0R0G0B -> src1 */ |
| 626 | |
| 627 | dst1 = _mm_cvtsi32_si64(*dstp); /* dst(ARGB) -> dst1 (0000ARGB)*/ |
| 628 | dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* 0A0R0G0B -> dst1 */ |
| 629 | |
| 630 | mm_alpha = _mm_cvtsi32_si64(alpha); /* alpha -> mm_alpha (0000000A) */ |
| 631 | mm_alpha = _mm_srli_si64(mm_alpha, ashift); /* mm_alpha >> ashift -> mm_alpha(0000000A) */ |
| 632 | mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
| 633 | mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
| 634 | mm_alpha = _mm_and_si64(mm_alpha, dmask); /* 000A0A0A -> mm_alpha, preserve dst alpha on add */ |
| 635 | |
| 636 | /* blend */ |
| 637 | src1 = _mm_sub_pi16(src1, dst1);/* src1 - dst1 -> src1 */ |
| 638 | src1 = _mm_mullo_pi16(src1, mm_alpha); /* (src1 - dst1) * alpha -> src1 */ |
| 639 | src1 = _mm_srli_pi16(src1, 8); /* src1 >> 8 -> src1(000R0G0B) */ |
| 640 | dst1 = _mm_add_pi8(src1, dst1); /* src1 + dst1 -> dst1(0A0R0G0B) */ |
| 641 | dst1 = _mm_packs_pu16(dst1, mm_zero); /* 0000ARGB -> dst1 */ |
| 642 | |
| 643 | *dstp = _mm_cvtsi64_si32(dst1); /* dst1 -> pixel */ |
| 644 | } |
| 645 | ++srcp; |
| 646 | ++dstp; |
| 647 | }, width); |
| 648 | srcp += srcskip; |
| 649 | dstp += dstskip; |
| 650 | } |
| 651 | _mm_empty(); |
| 652 | } |
| 653 | /* End MSVC_ASMBLIT */ |
| 654 | |
| 655 | #endif /* GCC_ASMBLIT, MSVC_ASMBLIT */ |
| 656 | |
| 657 | #if SDL_ALTIVEC_BLITTERS |
| 658 | #if __MWERKS__ |
| 659 | #pragma altivec_model on |
| 660 | #endif |
| 661 | #if HAVE_ALTIVEC_H |
| 662 | #include <altivec.h> |
| 663 | #endif |
| 664 | #include <assert.h> |
| 665 | |
| 666 | #if (defined(__MACOSX__) && (__GNUC__ < 4)) |
| 667 | #define VECUINT8_LITERAL(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \ |
| 668 | (vector unsigned char) ( a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p ) |
| 669 | #define VECUINT16_LITERAL(a,b,c,d,e,f,g,h) \ |
| 670 | (vector unsigned short) ( a,b,c,d,e,f,g,h ) |
| 671 | #else |
| 672 | #define VECUINT8_LITERAL(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \ |
| 673 | (vector unsigned char) { a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p } |
| 674 | #define VECUINT16_LITERAL(a,b,c,d,e,f,g,h) \ |
| 675 | (vector unsigned short) { a,b,c,d,e,f,g,h } |
| 676 | #endif |
| 677 | |
| 678 | #define UNALIGNED_PTR(x) (((size_t) x) & 0x0000000F) |
| 679 | #define VECPRINT(msg, v) do { \ |
| 680 | vector unsigned int tmpvec = (vector unsigned int)(v); \ |
| 681 | unsigned int *vp = (unsigned int *)&tmpvec; \ |
| 682 | printf("%s = %08X %08X %08X %08X\n", msg, vp[0], vp[1], vp[2], vp[3]); \ |
| 683 | } while (0) |
| 684 | |
| 685 | /* the permuation vector that takes the high bytes out of all the appropriate shorts |
| 686 | (vector unsigned char)( |
| 687 | 0x00, 0x10, 0x02, 0x12, |
| 688 | 0x04, 0x14, 0x06, 0x16, |
| 689 | 0x08, 0x18, 0x0A, 0x1A, |
| 690 | 0x0C, 0x1C, 0x0E, 0x1E ); |
| 691 | */ |
| 692 | #define VEC_MERGE_PERMUTE() (vec_add(vec_lvsl(0, (int*)NULL), (vector unsigned char)vec_splat_u16(0x0F))) |
| 693 | #define VEC_U32_24() (vec_add(vec_splat_u32(12), vec_splat_u32(12))) |
| 694 | #define VEC_ALPHA_MASK() ((vector unsigned char)vec_sl((vector unsigned int)vec_splat_s8(-1), VEC_U32_24())) |
| 695 | #define VEC_ALIGNER(src) ((UNALIGNED_PTR(src)) \ |
| 696 | ? vec_lvsl(0, src) \ |
| 697 | : vec_add(vec_lvsl(8, src), vec_splat_u8(8))) |
| 698 | |
| 699 | |
| 700 | #define VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1_16, v8_16) do { \ |
| 701 | /* vtemp1 contains source AAGGAAGGAAGGAAGG */ \ |
| 702 | vector unsigned short vtemp1 = vec_mule(vs, valpha); \ |
| 703 | /* vtemp2 contains source RRBBRRBBRRBBRRBB */ \ |
| 704 | vector unsigned short vtemp2 = vec_mulo(vs, valpha); \ |
| 705 | /* valpha2 is 255-alpha */ \ |
| 706 | vector unsigned char valpha2 = vec_nor(valpha, valpha); \ |
| 707 | /* vtemp3 contains dest AAGGAAGGAAGGAAGG */ \ |
| 708 | vector unsigned short vtemp3 = vec_mule(vd, valpha2); \ |
| 709 | /* vtemp4 contains dest RRBBRRBBRRBBRRBB */ \ |
| 710 | vector unsigned short vtemp4 = vec_mulo(vd, valpha2); \ |
| 711 | /* add source and dest */ \ |
| 712 | vtemp1 = vec_add(vtemp1, vtemp3); \ |
| 713 | vtemp2 = vec_add(vtemp2, vtemp4); \ |
| 714 | /* vtemp1 = (vtemp1 + 1) + ((vtemp1 + 1) >> 8) */ \ |
| 715 | vtemp1 = vec_add(vtemp1, v1_16); \ |
| 716 | vtemp3 = vec_sr(vtemp1, v8_16); \ |
| 717 | vtemp1 = vec_add(vtemp1, vtemp3); \ |
| 718 | /* vtemp2 = (vtemp2 + 1) + ((vtemp2 + 1) >> 8) */ \ |
| 719 | vtemp2 = vec_add(vtemp2, v1_16); \ |
| 720 | vtemp4 = vec_sr(vtemp2, v8_16); \ |
| 721 | vtemp2 = vec_add(vtemp2, vtemp4); \ |
| 722 | /* (>>8) and get ARGBARGBARGBARGB */ \ |
| 723 | vd = (vector unsigned char)vec_perm(vtemp1, vtemp2, mergePermute); \ |
| 724 | } while (0) |
| 725 | |
| 726 | /* Calculate the permute vector used for 32->32 swizzling */ |
| 727 | static vector unsigned char calc_swizzle32(const SDL_PixelFormat *srcfmt, |
| 728 | const SDL_PixelFormat *dstfmt) |
| 729 | { |
| 730 | /* |
| 731 | * We have to assume that the bits that aren't used by other |
| 732 | * colors is alpha, and it's one complete byte, since some formats |
| 733 | * leave alpha with a zero mask, but we should still swizzle the bits. |
| 734 | */ |
| 735 | /* ARGB */ |
| 736 | const static struct SDL_PixelFormat default_pixel_format = { |
| 737 | NULL, 0, 0, |
| 738 | 0, 0, 0, 0, |
| 739 | 16, 8, 0, 24, |
| 740 | 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000, |
| 741 | 0, 0}; |
| 742 | if (!srcfmt) { |
| 743 | srcfmt = &default_pixel_format; |
| 744 | } |
| 745 | if (!dstfmt) { |
| 746 | dstfmt = &default_pixel_format; |
| 747 | } |
| 748 | const vector unsigned char plus = VECUINT8_LITERAL |
| 749 | ( 0x00, 0x00, 0x00, 0x00, |
| 750 | 0x04, 0x04, 0x04, 0x04, |
| 751 | 0x08, 0x08, 0x08, 0x08, |
| 752 | 0x0C, 0x0C, 0x0C, 0x0C ); |
| 753 | vector unsigned char vswiz; |
| 754 | vector unsigned int srcvec; |
| 755 | #define RESHIFT(X) (3 - ((X) >> 3)) |
| 756 | Uint32 rmask = RESHIFT(srcfmt->Rshift) << (dstfmt->Rshift); |
| 757 | Uint32 gmask = RESHIFT(srcfmt->Gshift) << (dstfmt->Gshift); |
| 758 | Uint32 bmask = RESHIFT(srcfmt->Bshift) << (dstfmt->Bshift); |
| 759 | Uint32 amask; |
| 760 | /* Use zero for alpha if either surface doesn't have alpha */ |
| 761 | if (dstfmt->Amask) { |
| 762 | amask = ((srcfmt->Amask) ? RESHIFT(srcfmt->Ashift) : 0x10) << (dstfmt->Ashift); |
| 763 | } else { |
| 764 | amask = 0x10101010 & ((dstfmt->Rmask | dstfmt->Gmask | dstfmt->Bmask) ^ 0xFFFFFFFF); |
| 765 | } |
| 766 | #undef RESHIFT |
| 767 | ((unsigned int *)(char*)&srcvec)[0] = (rmask | gmask | bmask | amask); |
| 768 | vswiz = vec_add(plus, (vector unsigned char)vec_splat(srcvec, 0)); |
| 769 | return(vswiz); |
| 770 | } |
| 771 | |
| 772 | static void Blit32to565PixelAlphaAltivec(SDL_BlitInfo *info) |
| 773 | { |
| 774 | int height = info->d_height; |
| 775 | Uint8 *src = (Uint8 *)info->s_pixels; |
| 776 | int srcskip = info->s_skip; |
| 777 | Uint8 *dst = (Uint8 *)info->d_pixels; |
| 778 | int dstskip = info->d_skip; |
| 779 | SDL_PixelFormat *srcfmt = info->src; |
| 780 | |
| 781 | vector unsigned char v0 = vec_splat_u8(0); |
| 782 | vector unsigned short v8_16 = vec_splat_u16(8); |
| 783 | vector unsigned short v1_16 = vec_splat_u16(1); |
| 784 | vector unsigned short v2_16 = vec_splat_u16(2); |
| 785 | vector unsigned short v3_16 = vec_splat_u16(3); |
| 786 | vector unsigned int v8_32 = vec_splat_u32(8); |
| 787 | vector unsigned int v16_32 = vec_add(v8_32, v8_32); |
| 788 | vector unsigned short v3f = VECUINT16_LITERAL( |
| 789 | 0x003f, 0x003f, 0x003f, 0x003f, |
| 790 | 0x003f, 0x003f, 0x003f, 0x003f); |
| 791 | vector unsigned short vfc = VECUINT16_LITERAL( |
| 792 | 0x00fc, 0x00fc, 0x00fc, 0x00fc, |
| 793 | 0x00fc, 0x00fc, 0x00fc, 0x00fc); |
| 794 | |
| 795 | /* |
| 796 | 0x10 - 0x1f is the alpha |
| 797 | 0x00 - 0x0e evens are the red |
| 798 | 0x01 - 0x0f odds are zero |
| 799 | */ |
| 800 | vector unsigned char vredalpha1 = VECUINT8_LITERAL( |
| 801 | 0x10, 0x00, 0x01, 0x01, |
| 802 | 0x10, 0x02, 0x01, 0x01, |
| 803 | 0x10, 0x04, 0x01, 0x01, |
| 804 | 0x10, 0x06, 0x01, 0x01 |
| 805 | ); |
| 806 | vector unsigned char vredalpha2 = (vector unsigned char)( |
| 807 | vec_add((vector unsigned int)vredalpha1, vec_sl(v8_32, v16_32)) |
| 808 | ); |
| 809 | /* |
| 810 | 0x00 - 0x0f is ARxx ARxx ARxx ARxx |
| 811 | 0x11 - 0x0f odds are blue |
| 812 | */ |
| 813 | vector unsigned char vblue1 = VECUINT8_LITERAL( |
| 814 | 0x00, 0x01, 0x02, 0x11, |
| 815 | 0x04, 0x05, 0x06, 0x13, |
| 816 | 0x08, 0x09, 0x0a, 0x15, |
| 817 | 0x0c, 0x0d, 0x0e, 0x17 |
| 818 | ); |
| 819 | vector unsigned char vblue2 = (vector unsigned char)( |
| 820 | vec_add((vector unsigned int)vblue1, v8_32) |
| 821 | ); |
| 822 | /* |
| 823 | 0x00 - 0x0f is ARxB ARxB ARxB ARxB |
| 824 | 0x10 - 0x0e evens are green |
| 825 | */ |
| 826 | vector unsigned char vgreen1 = VECUINT8_LITERAL( |
| 827 | 0x00, 0x01, 0x10, 0x03, |
| 828 | 0x04, 0x05, 0x12, 0x07, |
| 829 | 0x08, 0x09, 0x14, 0x0b, |
| 830 | 0x0c, 0x0d, 0x16, 0x0f |
| 831 | ); |
| 832 | vector unsigned char vgreen2 = (vector unsigned char)( |
| 833 | vec_add((vector unsigned int)vgreen1, vec_sl(v8_32, v8_32)) |
| 834 | ); |
| 835 | vector unsigned char vgmerge = VECUINT8_LITERAL( |
| 836 | 0x00, 0x02, 0x00, 0x06, |
| 837 | 0x00, 0x0a, 0x00, 0x0e, |
| 838 | 0x00, 0x12, 0x00, 0x16, |
| 839 | 0x00, 0x1a, 0x00, 0x1e); |
| 840 | vector unsigned char mergePermute = VEC_MERGE_PERMUTE(); |
| 841 | vector unsigned char vpermute = calc_swizzle32(srcfmt, NULL); |
| 842 | vector unsigned char valphaPermute = vec_and(vec_lvsl(0, (int *)NULL), vec_splat_u8(0xC)); |
| 843 | |
| 844 | vector unsigned short vf800 = (vector unsigned short)vec_splat_u8(-7); |
| 845 | vf800 = vec_sl(vf800, vec_splat_u16(8)); |
| 846 | |
| 847 | while(height--) { |
| 848 | int extrawidth; |
| 849 | vector unsigned char valigner; |
| 850 | vector unsigned char vsrc; |
| 851 | vector unsigned char voverflow; |
| 852 | int width = info->d_width; |
| 853 | |
| 854 | #define ONE_PIXEL_BLEND(condition, widthvar) \ |
| 855 | while (condition) { \ |
| 856 | Uint32 Pixel; \ |
| 857 | unsigned sR, sG, sB, dR, dG, dB, sA; \ |
| 858 | DISEMBLE_RGBA(src, 4, srcfmt, Pixel, sR, sG, sB, sA); \ |
| 859 | if(sA) { \ |
| 860 | unsigned short dstpixel = *((unsigned short *)dst); \ |
| 861 | dR = (dstpixel >> 8) & 0xf8; \ |
| 862 | dG = (dstpixel >> 3) & 0xfc; \ |
| 863 | dB = (dstpixel << 3) & 0xf8; \ |
| 864 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
| 865 | *((unsigned short *)dst) = ( \ |
| 866 | ((dR & 0xf8) << 8) | ((dG & 0xfc) << 3) | (dB >> 3) \ |
| 867 | ); \ |
| 868 | } \ |
| 869 | src += 4; \ |
| 870 | dst += 2; \ |
| 871 | widthvar--; \ |
| 872 | } |
| 873 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dst)) && (width), width); |
| 874 | extrawidth = (width % 8); |
| 875 | valigner = VEC_ALIGNER(src); |
| 876 | vsrc = (vector unsigned char)vec_ld(0, src); |
| 877 | width -= extrawidth; |
| 878 | while (width) { |
| 879 | vector unsigned char valpha; |
| 880 | vector unsigned char vsrc1, vsrc2; |
| 881 | vector unsigned char vdst1, vdst2; |
| 882 | vector unsigned short vR, vG, vB; |
| 883 | vector unsigned short vpixel, vrpixel, vgpixel, vbpixel; |
| 884 | |
| 885 | /* Load 8 pixels from src as ARGB */ |
| 886 | voverflow = (vector unsigned char)vec_ld(15, src); |
| 887 | vsrc = vec_perm(vsrc, voverflow, valigner); |
| 888 | vsrc1 = vec_perm(vsrc, vsrc, vpermute); |
| 889 | src += 16; |
| 890 | vsrc = (vector unsigned char)vec_ld(15, src); |
| 891 | voverflow = vec_perm(voverflow, vsrc, valigner); |
| 892 | vsrc2 = vec_perm(voverflow, voverflow, vpermute); |
| 893 | src += 16; |
| 894 | |
| 895 | /* Load 8 pixels from dst as XRGB */ |
| 896 | voverflow = vec_ld(0, dst); |
| 897 | vR = vec_and((vector unsigned short)voverflow, vf800); |
| 898 | vB = vec_sl((vector unsigned short)voverflow, v3_16); |
| 899 | vG = vec_sl(vB, v2_16); |
| 900 | vdst1 = (vector unsigned char)vec_perm((vector unsigned char)vR, (vector unsigned char)vR, vredalpha1); |
| 901 | vdst1 = vec_perm(vdst1, (vector unsigned char)vB, vblue1); |
| 902 | vdst1 = vec_perm(vdst1, (vector unsigned char)vG, vgreen1); |
| 903 | vdst2 = (vector unsigned char)vec_perm((vector unsigned char)vR, (vector unsigned char)vR, vredalpha2); |
| 904 | vdst2 = vec_perm(vdst2, (vector unsigned char)vB, vblue2); |
| 905 | vdst2 = vec_perm(vdst2, (vector unsigned char)vG, vgreen2); |
| 906 | |
| 907 | /* Alpha blend 8 pixels as ARGB */ |
| 908 | valpha = vec_perm(vsrc1, v0, valphaPermute); |
| 909 | VEC_MULTIPLY_ALPHA(vsrc1, vdst1, valpha, mergePermute, v1_16, v8_16); |
| 910 | valpha = vec_perm(vsrc2, v0, valphaPermute); |
| 911 | VEC_MULTIPLY_ALPHA(vsrc2, vdst2, valpha, mergePermute, v1_16, v8_16); |
| 912 | |
| 913 | /* Convert 8 pixels to 565 */ |
| 914 | vpixel = (vector unsigned short)vec_packpx((vector unsigned int)vdst1, (vector unsigned int)vdst2); |
| 915 | vgpixel = (vector unsigned short)vec_perm(vdst1, vdst2, vgmerge); |
| 916 | vgpixel = vec_and(vgpixel, vfc); |
| 917 | vgpixel = vec_sl(vgpixel, v3_16); |
| 918 | vrpixel = vec_sl(vpixel, v1_16); |
| 919 | vrpixel = vec_and(vrpixel, vf800); |
| 920 | vbpixel = vec_and(vpixel, v3f); |
| 921 | vdst1 = vec_or((vector unsigned char)vrpixel, (vector unsigned char)vgpixel); |
| 922 | vdst1 = vec_or(vdst1, (vector unsigned char)vbpixel); |
| 923 | |
| 924 | /* Store 8 pixels */ |
| 925 | vec_st(vdst1, 0, dst); |
| 926 | |
| 927 | width -= 8; |
| 928 | dst += 16; |
| 929 | } |
| 930 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| 931 | #undef ONE_PIXEL_BLEND |
| 932 | src += srcskip; |
| 933 | dst += dstskip; |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | static void Blit32to32SurfaceAlphaKeyAltivec(SDL_BlitInfo *info) |
| 938 | { |
| 939 | unsigned alpha = info->src->alpha; |
| 940 | int height = info->d_height; |
| 941 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 942 | int srcskip = info->s_skip >> 2; |
| 943 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 944 | int dstskip = info->d_skip >> 2; |
| 945 | SDL_PixelFormat *srcfmt = info->src; |
| 946 | SDL_PixelFormat *dstfmt = info->dst; |
| 947 | unsigned sA = srcfmt->alpha; |
| 948 | unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
| 949 | Uint32 rgbmask = srcfmt->Rmask | srcfmt->Gmask | srcfmt->Bmask; |
| 950 | Uint32 ckey = info->src->colorkey; |
| 951 | vector unsigned char mergePermute; |
| 952 | vector unsigned char vsrcPermute; |
| 953 | vector unsigned char vdstPermute; |
| 954 | vector unsigned char vsdstPermute; |
| 955 | vector unsigned char valpha; |
| 956 | vector unsigned char valphamask; |
| 957 | vector unsigned char vbits; |
| 958 | vector unsigned char v0; |
| 959 | vector unsigned short v1; |
| 960 | vector unsigned short v8; |
| 961 | vector unsigned int vckey; |
| 962 | vector unsigned int vrgbmask; |
| 963 | |
| 964 | mergePermute = VEC_MERGE_PERMUTE(); |
| 965 | v0 = vec_splat_u8(0); |
| 966 | v1 = vec_splat_u16(1); |
| 967 | v8 = vec_splat_u16(8); |
| 968 | |
| 969 | /* set the alpha to 255 on the destination surf */ |
| 970 | valphamask = VEC_ALPHA_MASK(); |
| 971 | |
| 972 | vsrcPermute = calc_swizzle32(srcfmt, NULL); |
| 973 | vdstPermute = calc_swizzle32(NULL, dstfmt); |
| 974 | vsdstPermute = calc_swizzle32(dstfmt, NULL); |
| 975 | |
| 976 | /* set a vector full of alpha and 255-alpha */ |
| 977 | ((unsigned char *)&valpha)[0] = alpha; |
| 978 | valpha = vec_splat(valpha, 0); |
| 979 | vbits = (vector unsigned char)vec_splat_s8(-1); |
| 980 | |
| 981 | ckey &= rgbmask; |
| 982 | ((unsigned int *)(char*)&vckey)[0] = ckey; |
| 983 | vckey = vec_splat(vckey, 0); |
| 984 | ((unsigned int *)(char*)&vrgbmask)[0] = rgbmask; |
| 985 | vrgbmask = vec_splat(vrgbmask, 0); |
| 986 | |
| 987 | while(height--) { |
| 988 | int width = info->d_width; |
| 989 | #define ONE_PIXEL_BLEND(condition, widthvar) \ |
| 990 | while (condition) { \ |
| 991 | Uint32 Pixel; \ |
| 992 | unsigned sR, sG, sB, dR, dG, dB; \ |
| 993 | RETRIEVE_RGB_PIXEL(((Uint8 *)srcp), 4, Pixel); \ |
| 994 | if(sA && Pixel != ckey) { \ |
| 995 | RGB_FROM_PIXEL(Pixel, srcfmt, sR, sG, sB); \ |
| 996 | DISEMBLE_RGB(((Uint8 *)dstp), 4, dstfmt, Pixel, dR, dG, dB); \ |
| 997 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
| 998 | ASSEMBLE_RGBA(((Uint8 *)dstp), 4, dstfmt, dR, dG, dB, dA); \ |
| 999 | } \ |
| 1000 | dstp++; \ |
| 1001 | srcp++; \ |
| 1002 | widthvar--; \ |
| 1003 | } |
| 1004 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| 1005 | if (width > 0) { |
| 1006 | int extrawidth = (width % 4); |
| 1007 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
| 1008 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
| 1009 | width -= extrawidth; |
| 1010 | while (width) { |
| 1011 | vector unsigned char vsel; |
| 1012 | vector unsigned char voverflow; |
| 1013 | vector unsigned char vd; |
| 1014 | vector unsigned char vd_orig; |
| 1015 | |
| 1016 | /* s = *srcp */ |
| 1017 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
| 1018 | vs = vec_perm(vs, voverflow, valigner); |
| 1019 | |
| 1020 | /* vsel is set for items that match the key */ |
| 1021 | vsel = (vector unsigned char)vec_and((vector unsigned int)vs, vrgbmask); |
| 1022 | vsel = (vector unsigned char)vec_cmpeq((vector unsigned int)vsel, vckey); |
| 1023 | |
| 1024 | /* permute to source format */ |
| 1025 | vs = vec_perm(vs, valpha, vsrcPermute); |
| 1026 | |
| 1027 | /* d = *dstp */ |
| 1028 | vd = (vector unsigned char)vec_ld(0, dstp); |
| 1029 | vd_orig = vd = vec_perm(vd, v0, vsdstPermute); |
| 1030 | |
| 1031 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| 1032 | |
| 1033 | /* set the alpha channel to full on */ |
| 1034 | vd = vec_or(vd, valphamask); |
| 1035 | |
| 1036 | /* mask out color key */ |
| 1037 | vd = vec_sel(vd, vd_orig, vsel); |
| 1038 | |
| 1039 | /* permute to dest format */ |
| 1040 | vd = vec_perm(vd, vbits, vdstPermute); |
| 1041 | |
| 1042 | /* *dstp = res */ |
| 1043 | vec_st((vector unsigned int)vd, 0, dstp); |
| 1044 | |
| 1045 | srcp += 4; |
| 1046 | dstp += 4; |
| 1047 | width -= 4; |
| 1048 | vs = voverflow; |
| 1049 | } |
| 1050 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| 1051 | } |
| 1052 | #undef ONE_PIXEL_BLEND |
| 1053 | |
| 1054 | srcp += srcskip; |
| 1055 | dstp += dstskip; |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | |
| 1060 | static void Blit32to32PixelAlphaAltivec(SDL_BlitInfo *info) |
| 1061 | { |
| 1062 | int width = info->d_width; |
| 1063 | int height = info->d_height; |
| 1064 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 1065 | int srcskip = info->s_skip >> 2; |
| 1066 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 1067 | int dstskip = info->d_skip >> 2; |
| 1068 | SDL_PixelFormat *srcfmt = info->src; |
| 1069 | SDL_PixelFormat *dstfmt = info->dst; |
| 1070 | vector unsigned char mergePermute; |
| 1071 | vector unsigned char valphaPermute; |
| 1072 | vector unsigned char vsrcPermute; |
| 1073 | vector unsigned char vdstPermute; |
| 1074 | vector unsigned char vsdstPermute; |
| 1075 | vector unsigned char valphamask; |
| 1076 | vector unsigned char vpixelmask; |
| 1077 | vector unsigned char v0; |
| 1078 | vector unsigned short v1; |
| 1079 | vector unsigned short v8; |
| 1080 | |
| 1081 | v0 = vec_splat_u8(0); |
| 1082 | v1 = vec_splat_u16(1); |
| 1083 | v8 = vec_splat_u16(8); |
| 1084 | mergePermute = VEC_MERGE_PERMUTE(); |
| 1085 | valphamask = VEC_ALPHA_MASK(); |
| 1086 | valphaPermute = vec_and(vec_lvsl(0, (int *)NULL), vec_splat_u8(0xC)); |
| 1087 | vpixelmask = vec_nor(valphamask, v0); |
| 1088 | vsrcPermute = calc_swizzle32(srcfmt, NULL); |
| 1089 | vdstPermute = calc_swizzle32(NULL, dstfmt); |
| 1090 | vsdstPermute = calc_swizzle32(dstfmt, NULL); |
| 1091 | |
| 1092 | while ( height-- ) { |
| 1093 | width = info->d_width; |
| 1094 | #define ONE_PIXEL_BLEND(condition, widthvar) while ((condition)) { \ |
| 1095 | Uint32 Pixel; \ |
| 1096 | unsigned sR, sG, sB, dR, dG, dB, sA, dA; \ |
| 1097 | DISEMBLE_RGBA((Uint8 *)srcp, 4, srcfmt, Pixel, sR, sG, sB, sA); \ |
| 1098 | if(sA) { \ |
| 1099 | DISEMBLE_RGBA((Uint8 *)dstp, 4, dstfmt, Pixel, dR, dG, dB, dA); \ |
| 1100 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
| 1101 | ASSEMBLE_RGBA((Uint8 *)dstp, 4, dstfmt, dR, dG, dB, dA); \ |
| 1102 | } \ |
| 1103 | ++srcp; \ |
| 1104 | ++dstp; \ |
| 1105 | widthvar--; \ |
| 1106 | } |
| 1107 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| 1108 | if (width > 0) { |
| 1109 | /* vsrcPermute */ |
| 1110 | /* vdstPermute */ |
| 1111 | int extrawidth = (width % 4); |
| 1112 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
| 1113 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
| 1114 | width -= extrawidth; |
| 1115 | while (width) { |
| 1116 | vector unsigned char voverflow; |
| 1117 | vector unsigned char vd; |
| 1118 | vector unsigned char valpha; |
| 1119 | vector unsigned char vdstalpha; |
| 1120 | /* s = *srcp */ |
| 1121 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
| 1122 | vs = vec_perm(vs, voverflow, valigner); |
| 1123 | vs = vec_perm(vs, v0, vsrcPermute); |
| 1124 | |
| 1125 | valpha = vec_perm(vs, v0, valphaPermute); |
| 1126 | |
| 1127 | /* d = *dstp */ |
| 1128 | vd = (vector unsigned char)vec_ld(0, dstp); |
| 1129 | vd = vec_perm(vd, v0, vsdstPermute); |
| 1130 | vdstalpha = vec_and(vd, valphamask); |
| 1131 | |
| 1132 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| 1133 | |
| 1134 | /* set the alpha to the dest alpha */ |
| 1135 | vd = vec_and(vd, vpixelmask); |
| 1136 | vd = vec_or(vd, vdstalpha); |
| 1137 | vd = vec_perm(vd, v0, vdstPermute); |
| 1138 | |
| 1139 | /* *dstp = res */ |
| 1140 | vec_st((vector unsigned int)vd, 0, dstp); |
| 1141 | |
| 1142 | srcp += 4; |
| 1143 | dstp += 4; |
| 1144 | width -= 4; |
| 1145 | vs = voverflow; |
| 1146 | |
| 1147 | } |
| 1148 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| 1149 | } |
| 1150 | srcp += srcskip; |
| 1151 | dstp += dstskip; |
| 1152 | #undef ONE_PIXEL_BLEND |
| 1153 | } |
| 1154 | } |
| 1155 | |
| 1156 | /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
| 1157 | static void BlitRGBtoRGBPixelAlphaAltivec(SDL_BlitInfo *info) |
| 1158 | { |
| 1159 | int width = info->d_width; |
| 1160 | int height = info->d_height; |
| 1161 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 1162 | int srcskip = info->s_skip >> 2; |
| 1163 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 1164 | int dstskip = info->d_skip >> 2; |
| 1165 | vector unsigned char mergePermute; |
| 1166 | vector unsigned char valphaPermute; |
| 1167 | vector unsigned char valphamask; |
| 1168 | vector unsigned char vpixelmask; |
| 1169 | vector unsigned char v0; |
| 1170 | vector unsigned short v1; |
| 1171 | vector unsigned short v8; |
| 1172 | v0 = vec_splat_u8(0); |
| 1173 | v1 = vec_splat_u16(1); |
| 1174 | v8 = vec_splat_u16(8); |
| 1175 | mergePermute = VEC_MERGE_PERMUTE(); |
| 1176 | valphamask = VEC_ALPHA_MASK(); |
| 1177 | valphaPermute = vec_and(vec_lvsl(0, (int *)NULL), vec_splat_u8(0xC)); |
| 1178 | |
| 1179 | |
| 1180 | vpixelmask = vec_nor(valphamask, v0); |
| 1181 | while(height--) { |
| 1182 | width = info->d_width; |
| 1183 | #define ONE_PIXEL_BLEND(condition, widthvar) \ |
| 1184 | while ((condition)) { \ |
| 1185 | Uint32 dalpha; \ |
| 1186 | Uint32 d; \ |
| 1187 | Uint32 s1; \ |
| 1188 | Uint32 d1; \ |
| 1189 | Uint32 s = *srcp; \ |
| 1190 | Uint32 alpha = s >> 24; \ |
| 1191 | if(alpha) { \ |
| 1192 | if(alpha == SDL_ALPHA_OPAQUE) { \ |
| 1193 | *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); \ |
| 1194 | } else { \ |
| 1195 | d = *dstp; \ |
| 1196 | dalpha = d & 0xff000000; \ |
| 1197 | s1 = s & 0xff00ff; \ |
| 1198 | d1 = d & 0xff00ff; \ |
| 1199 | d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; \ |
| 1200 | s &= 0xff00; \ |
| 1201 | d &= 0xff00; \ |
| 1202 | d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ |
| 1203 | *dstp = d1 | d | dalpha; \ |
| 1204 | } \ |
| 1205 | } \ |
| 1206 | ++srcp; \ |
| 1207 | ++dstp; \ |
| 1208 | widthvar--; \ |
| 1209 | } |
| 1210 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| 1211 | if (width > 0) { |
| 1212 | int extrawidth = (width % 4); |
| 1213 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
| 1214 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
| 1215 | width -= extrawidth; |
| 1216 | while (width) { |
| 1217 | vector unsigned char voverflow; |
| 1218 | vector unsigned char vd; |
| 1219 | vector unsigned char valpha; |
| 1220 | vector unsigned char vdstalpha; |
| 1221 | /* s = *srcp */ |
| 1222 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
| 1223 | vs = vec_perm(vs, voverflow, valigner); |
| 1224 | |
| 1225 | valpha = vec_perm(vs, v0, valphaPermute); |
| 1226 | |
| 1227 | /* d = *dstp */ |
| 1228 | vd = (vector unsigned char)vec_ld(0, dstp); |
| 1229 | vdstalpha = vec_and(vd, valphamask); |
| 1230 | |
| 1231 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| 1232 | |
| 1233 | /* set the alpha to the dest alpha */ |
| 1234 | vd = vec_and(vd, vpixelmask); |
| 1235 | vd = vec_or(vd, vdstalpha); |
| 1236 | |
| 1237 | /* *dstp = res */ |
| 1238 | vec_st((vector unsigned int)vd, 0, dstp); |
| 1239 | |
| 1240 | srcp += 4; |
| 1241 | dstp += 4; |
| 1242 | width -= 4; |
| 1243 | vs = voverflow; |
| 1244 | } |
| 1245 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| 1246 | } |
| 1247 | srcp += srcskip; |
| 1248 | dstp += dstskip; |
| 1249 | } |
| 1250 | #undef ONE_PIXEL_BLEND |
| 1251 | } |
| 1252 | |
| 1253 | static void Blit32to32SurfaceAlphaAltivec(SDL_BlitInfo *info) |
| 1254 | { |
| 1255 | /* XXX : 6 */ |
| 1256 | unsigned alpha = info->src->alpha; |
| 1257 | int height = info->d_height; |
| 1258 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 1259 | int srcskip = info->s_skip >> 2; |
| 1260 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 1261 | int dstskip = info->d_skip >> 2; |
| 1262 | SDL_PixelFormat *srcfmt = info->src; |
| 1263 | SDL_PixelFormat *dstfmt = info->dst; |
| 1264 | unsigned sA = srcfmt->alpha; |
| 1265 | unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
| 1266 | vector unsigned char mergePermute; |
| 1267 | vector unsigned char vsrcPermute; |
| 1268 | vector unsigned char vdstPermute; |
| 1269 | vector unsigned char vsdstPermute; |
| 1270 | vector unsigned char valpha; |
| 1271 | vector unsigned char valphamask; |
| 1272 | vector unsigned char vbits; |
| 1273 | vector unsigned short v1; |
| 1274 | vector unsigned short v8; |
| 1275 | |
| 1276 | mergePermute = VEC_MERGE_PERMUTE(); |
| 1277 | v1 = vec_splat_u16(1); |
| 1278 | v8 = vec_splat_u16(8); |
| 1279 | |
| 1280 | /* set the alpha to 255 on the destination surf */ |
| 1281 | valphamask = VEC_ALPHA_MASK(); |
| 1282 | |
| 1283 | vsrcPermute = calc_swizzle32(srcfmt, NULL); |
| 1284 | vdstPermute = calc_swizzle32(NULL, dstfmt); |
| 1285 | vsdstPermute = calc_swizzle32(dstfmt, NULL); |
| 1286 | |
| 1287 | /* set a vector full of alpha and 255-alpha */ |
| 1288 | ((unsigned char *)&valpha)[0] = alpha; |
| 1289 | valpha = vec_splat(valpha, 0); |
| 1290 | vbits = (vector unsigned char)vec_splat_s8(-1); |
| 1291 | |
| 1292 | while(height--) { |
| 1293 | int width = info->d_width; |
| 1294 | #define ONE_PIXEL_BLEND(condition, widthvar) while ((condition)) { \ |
| 1295 | Uint32 Pixel; \ |
| 1296 | unsigned sR, sG, sB, dR, dG, dB; \ |
| 1297 | DISEMBLE_RGB(((Uint8 *)srcp), 4, srcfmt, Pixel, sR, sG, sB); \ |
| 1298 | DISEMBLE_RGB(((Uint8 *)dstp), 4, dstfmt, Pixel, dR, dG, dB); \ |
| 1299 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
| 1300 | ASSEMBLE_RGBA(((Uint8 *)dstp), 4, dstfmt, dR, dG, dB, dA); \ |
| 1301 | ++srcp; \ |
| 1302 | ++dstp; \ |
| 1303 | widthvar--; \ |
| 1304 | } |
| 1305 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| 1306 | if (width > 0) { |
| 1307 | int extrawidth = (width % 4); |
| 1308 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
| 1309 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
| 1310 | width -= extrawidth; |
| 1311 | while (width) { |
| 1312 | vector unsigned char voverflow; |
| 1313 | vector unsigned char vd; |
| 1314 | |
| 1315 | /* s = *srcp */ |
| 1316 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
| 1317 | vs = vec_perm(vs, voverflow, valigner); |
| 1318 | vs = vec_perm(vs, valpha, vsrcPermute); |
| 1319 | |
| 1320 | /* d = *dstp */ |
| 1321 | vd = (vector unsigned char)vec_ld(0, dstp); |
| 1322 | vd = vec_perm(vd, vd, vsdstPermute); |
| 1323 | |
| 1324 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| 1325 | |
| 1326 | /* set the alpha channel to full on */ |
| 1327 | vd = vec_or(vd, valphamask); |
| 1328 | vd = vec_perm(vd, vbits, vdstPermute); |
| 1329 | |
| 1330 | /* *dstp = res */ |
| 1331 | vec_st((vector unsigned int)vd, 0, dstp); |
| 1332 | |
| 1333 | srcp += 4; |
| 1334 | dstp += 4; |
| 1335 | width -= 4; |
| 1336 | vs = voverflow; |
| 1337 | } |
| 1338 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| 1339 | } |
| 1340 | #undef ONE_PIXEL_BLEND |
| 1341 | |
| 1342 | srcp += srcskip; |
| 1343 | dstp += dstskip; |
| 1344 | } |
| 1345 | |
| 1346 | } |
| 1347 | |
| 1348 | |
| 1349 | /* fast RGB888->(A)RGB888 blending */ |
| 1350 | static void BlitRGBtoRGBSurfaceAlphaAltivec(SDL_BlitInfo *info) |
| 1351 | { |
| 1352 | unsigned alpha = info->src->alpha; |
| 1353 | int height = info->d_height; |
| 1354 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 1355 | int srcskip = info->s_skip >> 2; |
| 1356 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 1357 | int dstskip = info->d_skip >> 2; |
| 1358 | vector unsigned char mergePermute; |
| 1359 | vector unsigned char valpha; |
| 1360 | vector unsigned char valphamask; |
| 1361 | vector unsigned short v1; |
| 1362 | vector unsigned short v8; |
| 1363 | |
| 1364 | mergePermute = VEC_MERGE_PERMUTE(); |
| 1365 | v1 = vec_splat_u16(1); |
| 1366 | v8 = vec_splat_u16(8); |
| 1367 | |
| 1368 | /* set the alpha to 255 on the destination surf */ |
| 1369 | valphamask = VEC_ALPHA_MASK(); |
| 1370 | |
| 1371 | /* set a vector full of alpha and 255-alpha */ |
| 1372 | ((unsigned char *)&valpha)[0] = alpha; |
| 1373 | valpha = vec_splat(valpha, 0); |
| 1374 | |
| 1375 | while(height--) { |
| 1376 | int width = info->d_width; |
| 1377 | #define ONE_PIXEL_BLEND(condition, widthvar) while ((condition)) { \ |
| 1378 | Uint32 s = *srcp; \ |
| 1379 | Uint32 d = *dstp; \ |
| 1380 | Uint32 s1 = s & 0xff00ff; \ |
| 1381 | Uint32 d1 = d & 0xff00ff; \ |
| 1382 | d1 = (d1 + ((s1 - d1) * alpha >> 8)) \ |
| 1383 | & 0xff00ff; \ |
| 1384 | s &= 0xff00; \ |
| 1385 | d &= 0xff00; \ |
| 1386 | d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ |
| 1387 | *dstp = d1 | d | 0xff000000; \ |
| 1388 | ++srcp; \ |
| 1389 | ++dstp; \ |
| 1390 | widthvar--; \ |
| 1391 | } |
| 1392 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| 1393 | if (width > 0) { |
| 1394 | int extrawidth = (width % 4); |
| 1395 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
| 1396 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
| 1397 | width -= extrawidth; |
| 1398 | while (width) { |
| 1399 | vector unsigned char voverflow; |
| 1400 | vector unsigned char vd; |
| 1401 | |
| 1402 | /* s = *srcp */ |
| 1403 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
| 1404 | vs = vec_perm(vs, voverflow, valigner); |
| 1405 | |
| 1406 | /* d = *dstp */ |
| 1407 | vd = (vector unsigned char)vec_ld(0, dstp); |
| 1408 | |
| 1409 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| 1410 | |
| 1411 | /* set the alpha channel to full on */ |
| 1412 | vd = vec_or(vd, valphamask); |
| 1413 | |
| 1414 | /* *dstp = res */ |
| 1415 | vec_st((vector unsigned int)vd, 0, dstp); |
| 1416 | |
| 1417 | srcp += 4; |
| 1418 | dstp += 4; |
| 1419 | width -= 4; |
| 1420 | vs = voverflow; |
| 1421 | } |
| 1422 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| 1423 | } |
| 1424 | #undef ONE_PIXEL_BLEND |
| 1425 | |
| 1426 | srcp += srcskip; |
| 1427 | dstp += dstskip; |
| 1428 | } |
| 1429 | } |
| 1430 | #if __MWERKS__ |
| 1431 | #pragma altivec_model off |
| 1432 | #endif |
| 1433 | #endif /* SDL_ALTIVEC_BLITTERS */ |
| 1434 | |
| 1435 | /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
| 1436 | static void BlitRGBtoRGBSurfaceAlpha128(SDL_BlitInfo *info) |
| 1437 | { |
| 1438 | int width = info->d_width; |
| 1439 | int height = info->d_height; |
| 1440 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 1441 | int srcskip = info->s_skip >> 2; |
| 1442 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 1443 | int dstskip = info->d_skip >> 2; |
| 1444 | |
| 1445 | while(height--) { |
| 1446 | DUFFS_LOOP4({ |
| 1447 | Uint32 s = *srcp++; |
| 1448 | Uint32 d = *dstp; |
| 1449 | *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
| 1450 | + (s & d & 0x00010101)) | 0xff000000; |
| 1451 | }, width); |
| 1452 | srcp += srcskip; |
| 1453 | dstp += dstskip; |
| 1454 | } |
| 1455 | } |
| 1456 | |
| 1457 | /* fast RGB888->(A)RGB888 blending with surface alpha */ |
| 1458 | static void BlitRGBtoRGBSurfaceAlpha(SDL_BlitInfo *info) |
| 1459 | { |
| 1460 | unsigned alpha = info->src->alpha; |
| 1461 | if(alpha == 128) { |
| 1462 | BlitRGBtoRGBSurfaceAlpha128(info); |
| 1463 | } else { |
| 1464 | int width = info->d_width; |
| 1465 | int height = info->d_height; |
| 1466 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 1467 | int srcskip = info->s_skip >> 2; |
| 1468 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 1469 | int dstskip = info->d_skip >> 2; |
| 1470 | Uint32 s; |
| 1471 | Uint32 d; |
| 1472 | Uint32 s1; |
| 1473 | Uint32 d1; |
| 1474 | |
| 1475 | while(height--) { |
| 1476 | DUFFS_LOOP_DOUBLE2({ |
| 1477 | /* One Pixel Blend */ |
| 1478 | s = *srcp; |
| 1479 | d = *dstp; |
| 1480 | s1 = s & 0xff00ff; |
| 1481 | d1 = d & 0xff00ff; |
| 1482 | d1 = (d1 + ((s1 - d1) * alpha >> 8)) |
| 1483 | & 0xff00ff; |
| 1484 | s &= 0xff00; |
| 1485 | d &= 0xff00; |
| 1486 | d = (d + ((s - d) * alpha >> 8)) & 0xff00; |
| 1487 | *dstp = d1 | d | 0xff000000; |
| 1488 | ++srcp; |
| 1489 | ++dstp; |
| 1490 | },{ |
| 1491 | /* Two Pixels Blend */ |
| 1492 | s = *srcp; |
| 1493 | d = *dstp; |
| 1494 | s1 = s & 0xff00ff; |
| 1495 | d1 = d & 0xff00ff; |
| 1496 | d1 += (s1 - d1) * alpha >> 8; |
| 1497 | d1 &= 0xff00ff; |
| 1498 | |
| 1499 | s = ((s & 0xff00) >> 8) | |
| 1500 | ((srcp[1] & 0xff00) << 8); |
| 1501 | d = ((d & 0xff00) >> 8) | |
| 1502 | ((dstp[1] & 0xff00) << 8); |
| 1503 | d += (s - d) * alpha >> 8; |
| 1504 | d &= 0x00ff00ff; |
| 1505 | |
| 1506 | *dstp++ = d1 | ((d << 8) & 0xff00) | 0xff000000; |
| 1507 | ++srcp; |
| 1508 | |
| 1509 | s1 = *srcp; |
| 1510 | d1 = *dstp; |
| 1511 | s1 &= 0xff00ff; |
| 1512 | d1 &= 0xff00ff; |
| 1513 | d1 += (s1 - d1) * alpha >> 8; |
| 1514 | d1 &= 0xff00ff; |
| 1515 | |
| 1516 | *dstp = d1 | ((d >> 8) & 0xff00) | 0xff000000; |
| 1517 | ++srcp; |
| 1518 | ++dstp; |
| 1519 | }, width); |
| 1520 | srcp += srcskip; |
| 1521 | dstp += dstskip; |
| 1522 | } |
| 1523 | } |
| 1524 | } |
| 1525 | |
| 1526 | /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
| 1527 | static void BlitRGBtoRGBPixelAlpha(SDL_BlitInfo *info) |
| 1528 | { |
| 1529 | int width = info->d_width; |
| 1530 | int height = info->d_height; |
| 1531 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 1532 | int srcskip = info->s_skip >> 2; |
| 1533 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 1534 | int dstskip = info->d_skip >> 2; |
| 1535 | |
| 1536 | while(height--) { |
| 1537 | DUFFS_LOOP4({ |
| 1538 | Uint32 dalpha; |
| 1539 | Uint32 d; |
| 1540 | Uint32 s1; |
| 1541 | Uint32 d1; |
| 1542 | Uint32 s = *srcp; |
| 1543 | Uint32 alpha = s >> 24; |
| 1544 | /* FIXME: Here we special-case opaque alpha since the |
| 1545 | compositioning used (>>8 instead of /255) doesn't handle |
| 1546 | it correctly. Also special-case alpha=0 for speed? |
| 1547 | Benchmark this! */ |
| 1548 | if(alpha) { |
| 1549 | if(alpha == SDL_ALPHA_OPAQUE) { |
| 1550 | *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); |
| 1551 | } else { |
| 1552 | /* |
| 1553 | * take out the middle component (green), and process |
| 1554 | * the other two in parallel. One multiply less. |
| 1555 | */ |
| 1556 | d = *dstp; |
| 1557 | dalpha = d & 0xff000000; |
| 1558 | s1 = s & 0xff00ff; |
| 1559 | d1 = d & 0xff00ff; |
| 1560 | d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; |
| 1561 | s &= 0xff00; |
| 1562 | d &= 0xff00; |
| 1563 | d = (d + ((s - d) * alpha >> 8)) & 0xff00; |
| 1564 | *dstp = d1 | d | dalpha; |
| 1565 | } |
| 1566 | } |
| 1567 | ++srcp; |
| 1568 | ++dstp; |
| 1569 | }, width); |
| 1570 | srcp += srcskip; |
| 1571 | dstp += dstskip; |
| 1572 | } |
| 1573 | } |
| 1574 | |
| 1575 | #if GCC_ASMBLIT |
| 1576 | /* fast (as in MMX with prefetch) ARGB888->(A)RGB888 blending with pixel alpha */ |
| 1577 | static void BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo *info) |
| 1578 | { |
| 1579 | int width = info->d_width; |
| 1580 | int height = info->d_height; |
| 1581 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 1582 | int srcskip = info->s_skip >> 2; |
| 1583 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 1584 | int dstskip = info->d_skip >> 2; |
| 1585 | SDL_PixelFormat* sf = info->src; |
| 1586 | Uint32 amask = sf->Amask; |
| 1587 | |
| 1588 | __asm__ ( |
| 1589 | /* make mm6 all zeros. */ |
| 1590 | "pxor %%mm6, %%mm6\n" |
| 1591 | |
| 1592 | /* Make a mask to preserve the alpha. */ |
| 1593 | "movd %0, %%mm7\n\t" /* 0000F000 -> mm7 */ |
| 1594 | "punpcklbw %%mm7, %%mm7\n\t" /* FF000000 -> mm7 */ |
| 1595 | "pcmpeqb %%mm4, %%mm4\n\t" /* FFFFFFFF -> mm4 */ |
| 1596 | "movq %%mm4, %%mm3\n\t" /* FFFFFFFF -> mm3 (for later) */ |
| 1597 | "pxor %%mm4, %%mm7\n\t" /* 00FFFFFF -> mm7 (mult mask) */ |
| 1598 | |
| 1599 | /* form channel masks */ |
| 1600 | "movq %%mm7, %%mm4\n\t" /* 00FFFFFF -> mm4 */ |
| 1601 | "packsswb %%mm6, %%mm4\n\t" /* 00000FFF -> mm4 (channel mask) */ |
| 1602 | "packsswb %%mm6, %%mm3\n\t" /* 0000FFFF -> mm3 */ |
| 1603 | "pxor %%mm4, %%mm3\n\t" /* 0000F000 -> mm3 (~channel mask) */ |
| 1604 | |
| 1605 | /* get alpha channel shift */ |
| 1606 | "movd %1, %%mm5\n\t" /* Ashift -> mm5 */ |
| 1607 | |
| 1608 | : /* nothing */ : "rm" (amask), "rm" ((Uint32) sf->Ashift) ); |
| 1609 | |
| 1610 | while(height--) { |
| 1611 | |
| 1612 | DUFFS_LOOP4({ |
| 1613 | Uint32 alpha; |
| 1614 | |
| 1615 | __asm__ ( |
| 1616 | "prefetch 64(%0)\n" |
| 1617 | "prefetch 64(%1)\n" |
| 1618 | : : "r" (srcp), "r" (dstp) ); |
| 1619 | |
| 1620 | alpha = *srcp & amask; |
| 1621 | /* FIXME: Here we special-case opaque alpha since the |
| 1622 | compositioning used (>>8 instead of /255) doesn't handle |
| 1623 | it correctly. Also special-case alpha=0 for speed? |
| 1624 | Benchmark this! */ |
| 1625 | if(alpha == 0) { |
| 1626 | /* do nothing */ |
| 1627 | } |
| 1628 | else if(alpha == amask) { |
| 1629 | /* opaque alpha -- copy RGB, keep dst alpha */ |
| 1630 | /* using MMX here to free up regular registers for other things */ |
| 1631 | __asm__ ( |
| 1632 | "movd (%0), %%mm0\n\t" /* src(ARGB) -> mm0 (0000ARGB)*/ |
| 1633 | "movd (%1), %%mm1\n\t" /* dst(ARGB) -> mm1 (0000ARGB)*/ |
| 1634 | "pand %%mm4, %%mm0\n\t" /* src & chanmask -> mm0 */ |
| 1635 | "pand %%mm3, %%mm1\n\t" /* dst & ~chanmask -> mm2 */ |
| 1636 | "por %%mm0, %%mm1\n\t" /* src | dst -> mm1 */ |
| 1637 | "movd %%mm1, (%1) \n\t" /* mm1 -> dst */ |
| 1638 | |
| 1639 | : : "r" (srcp), "r" (dstp) ); |
| 1640 | } |
| 1641 | |
| 1642 | else { |
| 1643 | __asm__ ( |
| 1644 | /* load in the source, and dst. */ |
| 1645 | "movd (%0), %%mm0\n" /* mm0(s) = 0 0 0 0 | As Rs Gs Bs */ |
| 1646 | "movd (%1), %%mm1\n" /* mm1(d) = 0 0 0 0 | Ad Rd Gd Bd */ |
| 1647 | |
| 1648 | /* Move the src alpha into mm2 */ |
| 1649 | |
| 1650 | /* if supporting pshufw */ |
| 1651 | /*"pshufw $0x55, %%mm0, %%mm2\n" */ /* mm2 = 0 As 0 As | 0 As 0 As */ |
| 1652 | /*"psrlw $8, %%mm2\n" */ |
| 1653 | |
| 1654 | /* else: */ |
| 1655 | "movd %2, %%mm2\n" |
| 1656 | "psrld %%mm5, %%mm2\n" /* mm2 = 0 0 0 0 | 0 0 0 As */ |
| 1657 | "punpcklwd %%mm2, %%mm2\n" /* mm2 = 0 0 0 0 | 0 As 0 As */ |
| 1658 | "punpckldq %%mm2, %%mm2\n" /* mm2 = 0 As 0 As | 0 As 0 As */ |
| 1659 | "pand %%mm7, %%mm2\n" /* to preserve dest alpha */ |
| 1660 | |
| 1661 | /* move the colors into words. */ |
| 1662 | "punpcklbw %%mm6, %%mm0\n" /* mm0 = 0 As 0 Rs | 0 Gs 0 Bs */ |
| 1663 | "punpcklbw %%mm6, %%mm1\n" /* mm0 = 0 Ad 0 Rd | 0 Gd 0 Bd */ |
| 1664 | |
| 1665 | /* src - dst */ |
| 1666 | "psubw %%mm1, %%mm0\n" /* mm0 = As-Ad Rs-Rd | Gs-Gd Bs-Bd */ |
| 1667 | |
| 1668 | /* A * (src-dst) */ |
| 1669 | "pmullw %%mm2, %%mm0\n" /* mm0 = 0*As-d As*Rs-d | As*Gs-d As*Bs-d */ |
| 1670 | "psrlw $8, %%mm0\n" /* mm0 = 0>>8 Rc>>8 | Gc>>8 Bc>>8 */ |
| 1671 | "paddb %%mm1, %%mm0\n" /* mm0 = 0+Ad Rc+Rd | Gc+Gd Bc+Bd */ |
| 1672 | |
| 1673 | "packuswb %%mm0, %%mm0\n" /* mm0 = | Ac Rc Gc Bc */ |
| 1674 | |
| 1675 | "movd %%mm0, (%1)\n" /* result in mm0 */ |
| 1676 | |
| 1677 | : : "r" (srcp), "r" (dstp), "r" (alpha) ); |
| 1678 | |
| 1679 | } |
| 1680 | ++srcp; |
| 1681 | ++dstp; |
| 1682 | }, width); |
| 1683 | srcp += srcskip; |
| 1684 | dstp += dstskip; |
| 1685 | } |
| 1686 | |
| 1687 | __asm__ ( |
| 1688 | "emms\n" |
| 1689 | : ); |
| 1690 | } |
| 1691 | /* End GCC_ASMBLIT*/ |
| 1692 | |
| 1693 | #elif MSVC_ASMBLIT |
| 1694 | /* fast (as in MMX with prefetch) ARGB888->(A)RGB888 blending with pixel alpha */ |
| 1695 | static void BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo *info) |
| 1696 | { |
| 1697 | int width = info->d_width; |
| 1698 | int height = info->d_height; |
| 1699 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 1700 | int srcskip = info->s_skip >> 2; |
| 1701 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
| 1702 | int dstskip = info->d_skip >> 2; |
| 1703 | SDL_PixelFormat* sf = info->src; |
| 1704 | Uint32 chanmask = sf->Rmask | sf->Gmask | sf->Bmask; |
| 1705 | Uint32 amask = sf->Amask; |
| 1706 | Uint32 ashift = sf->Ashift; |
| 1707 | Uint64 multmask; |
| 1708 | |
| 1709 | __m64 src1, dst1, mm_alpha, mm_zero, dmask; |
| 1710 | |
| 1711 | mm_zero = _mm_setzero_si64(); /* 0 -> mm_zero */ |
| 1712 | multmask = ~(0xFFFFi64 << (ashift * 2)); |
| 1713 | dmask = *(__m64*) &multmask; /* dst alpha mask -> dmask */ |
| 1714 | |
| 1715 | while(height--) { |
| 1716 | DUFFS_LOOP4({ |
| 1717 | Uint32 alpha; |
| 1718 | |
| 1719 | _m_prefetch(srcp + 16); |
| 1720 | _m_prefetch(dstp + 16); |
| 1721 | |
| 1722 | alpha = *srcp & amask; |
| 1723 | if (alpha == 0) { |
| 1724 | /* do nothing */ |
| 1725 | } else if (alpha == amask) { |
| 1726 | /* copy RGB, keep dst alpha */ |
| 1727 | *dstp = (*srcp & chanmask) | (*dstp & ~chanmask); |
| 1728 | } else { |
| 1729 | src1 = _mm_cvtsi32_si64(*srcp); /* src(ARGB) -> src1 (0000ARGB)*/ |
| 1730 | src1 = _mm_unpacklo_pi8(src1, mm_zero); /* 0A0R0G0B -> src1 */ |
| 1731 | |
| 1732 | dst1 = _mm_cvtsi32_si64(*dstp); /* dst(ARGB) -> dst1 (0000ARGB)*/ |
| 1733 | dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* 0A0R0G0B -> dst1 */ |
| 1734 | |
| 1735 | mm_alpha = _mm_cvtsi32_si64(alpha); /* alpha -> mm_alpha (0000000A) */ |
| 1736 | mm_alpha = _mm_srli_si64(mm_alpha, ashift); /* mm_alpha >> ashift -> mm_alpha(0000000A) */ |
| 1737 | mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
| 1738 | mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
| 1739 | mm_alpha = _mm_and_si64(mm_alpha, dmask); /* 000A0A0A -> mm_alpha, preserve dst alpha on add */ |
| 1740 | |
| 1741 | /* blend */ |
| 1742 | src1 = _mm_sub_pi16(src1, dst1);/* src - dst -> src1 */ |
| 1743 | src1 = _mm_mullo_pi16(src1, mm_alpha); /* (src - dst) * alpha -> src1 */ |
| 1744 | src1 = _mm_srli_pi16(src1, 8); /* src1 >> 8 -> src1(000R0G0B) */ |
| 1745 | dst1 = _mm_add_pi8(src1, dst1); /* src1 + dst1(dst) -> dst1(0A0R0G0B) */ |
| 1746 | dst1 = _mm_packs_pu16(dst1, mm_zero); /* 0000ARGB -> dst1 */ |
| 1747 | |
| 1748 | *dstp = _mm_cvtsi64_si32(dst1); /* dst1 -> pixel */ |
| 1749 | } |
| 1750 | ++srcp; |
| 1751 | ++dstp; |
| 1752 | }, width); |
| 1753 | srcp += srcskip; |
| 1754 | dstp += dstskip; |
| 1755 | } |
| 1756 | _mm_empty(); |
| 1757 | } |
| 1758 | /* End MSVC_ASMBLIT */ |
| 1759 | |
| 1760 | #endif /* GCC_ASMBLIT, MSVC_ASMBLIT */ |
| 1761 | |
| 1762 | /* 16bpp special case for per-surface alpha=50%: blend 2 pixels in parallel */ |
| 1763 | |
| 1764 | /* blend a single 16 bit pixel at 50% */ |
| 1765 | #define BLEND16_50(d, s, mask) \ |
| 1766 | ((((s & mask) + (d & mask)) >> 1) + (s & d & (~mask & 0xffff))) |
| 1767 | |
| 1768 | /* blend two 16 bit pixels at 50% */ |
| 1769 | #define BLEND2x16_50(d, s, mask) \ |
| 1770 | (((s & (mask | mask << 16)) >> 1) + ((d & (mask | mask << 16)) >> 1) \ |
| 1771 | + (s & d & (~(mask | mask << 16)))) |
| 1772 | |
| 1773 | static void Blit16to16SurfaceAlpha128(SDL_BlitInfo *info, Uint16 mask) |
| 1774 | { |
| 1775 | int width = info->d_width; |
| 1776 | int height = info->d_height; |
| 1777 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
| 1778 | int srcskip = info->s_skip >> 1; |
| 1779 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
| 1780 | int dstskip = info->d_skip >> 1; |
| 1781 | |
| 1782 | while(height--) { |
| 1783 | if(((uintptr_t)srcp ^ (uintptr_t)dstp) & 2) { |
| 1784 | /* |
| 1785 | * Source and destination not aligned, pipeline it. |
| 1786 | * This is mostly a win for big blits but no loss for |
| 1787 | * small ones |
| 1788 | */ |
| 1789 | Uint32 prev_sw; |
| 1790 | int w = width; |
| 1791 | |
| 1792 | /* handle odd destination */ |
| 1793 | if((uintptr_t)dstp & 2) { |
| 1794 | Uint16 d = *dstp, s = *srcp; |
| 1795 | *dstp = BLEND16_50(d, s, mask); |
| 1796 | dstp++; |
| 1797 | srcp++; |
| 1798 | w--; |
| 1799 | } |
| 1800 | srcp++; /* srcp is now 32-bit aligned */ |
| 1801 | |
| 1802 | /* bootstrap pipeline with first halfword */ |
| 1803 | prev_sw = ((Uint32 *)srcp)[-1]; |
| 1804 | |
| 1805 | while(w > 1) { |
| 1806 | Uint32 sw, dw, s; |
| 1807 | sw = *(Uint32 *)srcp; |
| 1808 | dw = *(Uint32 *)dstp; |
| 1809 | #if SDL_BYTEORDER == SDL_BIG_ENDIAN |
| 1810 | s = (prev_sw << 16) + (sw >> 16); |
| 1811 | #else |
| 1812 | s = (prev_sw >> 16) + (sw << 16); |
| 1813 | #endif |
| 1814 | prev_sw = sw; |
| 1815 | *(Uint32 *)dstp = BLEND2x16_50(dw, s, mask); |
| 1816 | dstp += 2; |
| 1817 | srcp += 2; |
| 1818 | w -= 2; |
| 1819 | } |
| 1820 | |
| 1821 | /* final pixel if any */ |
| 1822 | if(w) { |
| 1823 | Uint16 d = *dstp, s; |
| 1824 | #if SDL_BYTEORDER == SDL_BIG_ENDIAN |
| 1825 | s = (Uint16)prev_sw; |
| 1826 | #else |
| 1827 | s = (Uint16)(prev_sw >> 16); |
| 1828 | #endif |
| 1829 | *dstp = BLEND16_50(d, s, mask); |
| 1830 | srcp++; |
| 1831 | dstp++; |
| 1832 | } |
| 1833 | srcp += srcskip - 1; |
| 1834 | dstp += dstskip; |
| 1835 | } else { |
| 1836 | /* source and destination are aligned */ |
| 1837 | int w = width; |
| 1838 | |
| 1839 | /* first odd pixel? */ |
| 1840 | if((uintptr_t)srcp & 2) { |
| 1841 | Uint16 d = *dstp, s = *srcp; |
| 1842 | *dstp = BLEND16_50(d, s, mask); |
| 1843 | srcp++; |
| 1844 | dstp++; |
| 1845 | w--; |
| 1846 | } |
| 1847 | /* srcp and dstp are now 32-bit aligned */ |
| 1848 | |
| 1849 | while(w > 1) { |
| 1850 | Uint32 sw = *(Uint32 *)srcp; |
| 1851 | Uint32 dw = *(Uint32 *)dstp; |
| 1852 | *(Uint32 *)dstp = BLEND2x16_50(dw, sw, mask); |
| 1853 | srcp += 2; |
| 1854 | dstp += 2; |
| 1855 | w -= 2; |
| 1856 | } |
| 1857 | |
| 1858 | /* last odd pixel? */ |
| 1859 | if(w) { |
| 1860 | Uint16 d = *dstp, s = *srcp; |
| 1861 | *dstp = BLEND16_50(d, s, mask); |
| 1862 | srcp++; |
| 1863 | dstp++; |
| 1864 | } |
| 1865 | srcp += srcskip; |
| 1866 | dstp += dstskip; |
| 1867 | } |
| 1868 | } |
| 1869 | } |
| 1870 | |
| 1871 | #if GCC_ASMBLIT |
| 1872 | /* fast RGB565->RGB565 blending with surface alpha */ |
| 1873 | static void Blit565to565SurfaceAlphaMMX(SDL_BlitInfo *info) |
| 1874 | { |
| 1875 | unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
| 1876 | if(alpha == 128) { |
| 1877 | Blit16to16SurfaceAlpha128(info, 0xf7de); |
| 1878 | } else { |
| 1879 | int width = info->d_width; |
| 1880 | int height = info->d_height; |
| 1881 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
| 1882 | int srcskip = info->s_skip >> 1; |
| 1883 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
| 1884 | int dstskip = info->d_skip >> 1; |
| 1885 | Uint32 s, d; |
| 1886 | Uint64 load; |
| 1887 | |
| 1888 | alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
| 1889 | load = alpha; |
| 1890 | alpha >>= 3; /* downscale alpha to 5 bits */ |
| 1891 | |
| 1892 | movq_m2r(load, mm0); /* alpha(0000000A) -> mm0 */ |
| 1893 | punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */ |
| 1894 | punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */ |
| 1895 | /* position alpha to allow for mullo and mulhi on diff channels |
| 1896 | to reduce the number of operations */ |
| 1897 | psllq_i2r(3, mm0); |
| 1898 | |
| 1899 | /* Setup the 565 color channel masks */ |
| 1900 | load = 0x07E007E007E007E0ULL; |
| 1901 | movq_m2r(load, mm4); /* MASKGREEN -> mm4 */ |
| 1902 | load = 0x001F001F001F001FULL; |
| 1903 | movq_m2r(load, mm7); /* MASKBLUE -> mm7 */ |
| 1904 | while(height--) { |
| 1905 | DUFFS_LOOP_QUATRO2( |
| 1906 | { |
| 1907 | s = *srcp++; |
| 1908 | d = *dstp; |
| 1909 | /* |
| 1910 | * shift out the middle component (green) to |
| 1911 | * the high 16 bits, and process all three RGB |
| 1912 | * components at the same time. |
| 1913 | */ |
| 1914 | s = (s | s << 16) & 0x07e0f81f; |
| 1915 | d = (d | d << 16) & 0x07e0f81f; |
| 1916 | d += (s - d) * alpha >> 5; |
| 1917 | d &= 0x07e0f81f; |
| 1918 | *dstp++ = d | d >> 16; |
| 1919 | },{ |
| 1920 | s = *srcp++; |
| 1921 | d = *dstp; |
| 1922 | /* |
| 1923 | * shift out the middle component (green) to |
| 1924 | * the high 16 bits, and process all three RGB |
| 1925 | * components at the same time. |
| 1926 | */ |
| 1927 | s = (s | s << 16) & 0x07e0f81f; |
| 1928 | d = (d | d << 16) & 0x07e0f81f; |
| 1929 | d += (s - d) * alpha >> 5; |
| 1930 | d &= 0x07e0f81f; |
| 1931 | *dstp++ = d | d >> 16; |
| 1932 | s = *srcp++; |
| 1933 | d = *dstp; |
| 1934 | /* |
| 1935 | * shift out the middle component (green) to |
| 1936 | * the high 16 bits, and process all three RGB |
| 1937 | * components at the same time. |
| 1938 | */ |
| 1939 | s = (s | s << 16) & 0x07e0f81f; |
| 1940 | d = (d | d << 16) & 0x07e0f81f; |
| 1941 | d += (s - d) * alpha >> 5; |
| 1942 | d &= 0x07e0f81f; |
| 1943 | *dstp++ = d | d >> 16; |
| 1944 | },{ |
| 1945 | movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */ |
| 1946 | movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */ |
| 1947 | |
| 1948 | /* red -- does not need a mask since the right shift clears |
| 1949 | the uninteresting bits */ |
| 1950 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
| 1951 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
| 1952 | psrlw_i2r(11, mm5); /* mm5 >> 11 -> mm5 [000r 000r 000r 000r] */ |
| 1953 | psrlw_i2r(11, mm6); /* mm6 >> 11 -> mm6 [000r 000r 000r 000r] */ |
| 1954 | |
| 1955 | /* blend */ |
| 1956 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
| 1957 | pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
| 1958 | /* alpha used is actually 11 bits |
| 1959 | 11 + 5 = 16 bits, so the sign bits are lost */ |
| 1960 | psrlw_i2r(11, mm5); /* mm5 >> 11 -> mm5 */ |
| 1961 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
| 1962 | psllw_i2r(11, mm6); /* mm6 << 11 -> mm6 */ |
| 1963 | |
| 1964 | movq_r2r(mm6, mm1); /* save new reds in dsts */ |
| 1965 | |
| 1966 | /* green -- process the bits in place */ |
| 1967 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
| 1968 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
| 1969 | pand_r2r(mm4, mm5); /* src & MASKGREEN -> mm5 */ |
| 1970 | pand_r2r(mm4, mm6); /* dst & MASKGREEN -> mm6 */ |
| 1971 | |
| 1972 | /* blend */ |
| 1973 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
| 1974 | pmulhw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
| 1975 | /* 11 + 11 - 16 = 6 bits, so all the lower uninteresting |
| 1976 | bits are gone and the sign bits present */ |
| 1977 | psllw_i2r(5, mm5); /* mm5 << 5 -> mm5 */ |
| 1978 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
| 1979 | |
| 1980 | por_r2r(mm6, mm1); /* save new greens in dsts */ |
| 1981 | |
| 1982 | /* blue */ |
| 1983 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
| 1984 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
| 1985 | pand_r2r(mm7, mm5); /* src & MASKBLUE -> mm5[000b 000b 000b 000b] */ |
| 1986 | pand_r2r(mm7, mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
| 1987 | |
| 1988 | /* blend */ |
| 1989 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
| 1990 | pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
| 1991 | /* 11 + 5 = 16 bits, so the sign bits are lost and |
| 1992 | the interesting bits will need to be MASKed */ |
| 1993 | psrlw_i2r(11, mm5); /* mm5 >> 11 -> mm5 */ |
| 1994 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
| 1995 | pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
| 1996 | |
| 1997 | por_r2r(mm6, mm1); /* save new blues in dsts */ |
| 1998 | |
| 1999 | movq_r2m(mm1, *dstp); /* mm1 -> 4 dst pixels */ |
| 2000 | |
| 2001 | srcp += 4; |
| 2002 | dstp += 4; |
| 2003 | }, width); |
| 2004 | srcp += srcskip; |
| 2005 | dstp += dstskip; |
| 2006 | } |
| 2007 | emms(); |
| 2008 | } |
| 2009 | } |
| 2010 | |
| 2011 | /* fast RGB555->RGB555 blending with surface alpha */ |
| 2012 | static void Blit555to555SurfaceAlphaMMX(SDL_BlitInfo *info) |
| 2013 | { |
| 2014 | unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
| 2015 | if(alpha == 128) { |
| 2016 | Blit16to16SurfaceAlpha128(info, 0xfbde); |
| 2017 | } else { |
| 2018 | int width = info->d_width; |
| 2019 | int height = info->d_height; |
| 2020 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
| 2021 | int srcskip = info->s_skip >> 1; |
| 2022 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
| 2023 | int dstskip = info->d_skip >> 1; |
| 2024 | Uint32 s, d; |
| 2025 | Uint64 load; |
| 2026 | |
| 2027 | alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
| 2028 | load = alpha; |
| 2029 | alpha >>= 3; /* downscale alpha to 5 bits */ |
| 2030 | |
| 2031 | movq_m2r(load, mm0); /* alpha(0000000A) -> mm0 */ |
| 2032 | punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */ |
| 2033 | punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */ |
| 2034 | /* position alpha to allow for mullo and mulhi on diff channels |
| 2035 | to reduce the number of operations */ |
| 2036 | psllq_i2r(3, mm0); |
| 2037 | |
| 2038 | /* Setup the 555 color channel masks */ |
| 2039 | load = 0x03E003E003E003E0ULL; |
| 2040 | movq_m2r(load, mm4); /* MASKGREEN -> mm4 */ |
| 2041 | load = 0x001F001F001F001FULL; |
| 2042 | movq_m2r(load, mm7); /* MASKBLUE -> mm7 */ |
| 2043 | while(height--) { |
| 2044 | DUFFS_LOOP_QUATRO2( |
| 2045 | { |
| 2046 | s = *srcp++; |
| 2047 | d = *dstp; |
| 2048 | /* |
| 2049 | * shift out the middle component (green) to |
| 2050 | * the high 16 bits, and process all three RGB |
| 2051 | * components at the same time. |
| 2052 | */ |
| 2053 | s = (s | s << 16) & 0x03e07c1f; |
| 2054 | d = (d | d << 16) & 0x03e07c1f; |
| 2055 | d += (s - d) * alpha >> 5; |
| 2056 | d &= 0x03e07c1f; |
| 2057 | *dstp++ = d | d >> 16; |
| 2058 | },{ |
| 2059 | s = *srcp++; |
| 2060 | d = *dstp; |
| 2061 | /* |
| 2062 | * shift out the middle component (green) to |
| 2063 | * the high 16 bits, and process all three RGB |
| 2064 | * components at the same time. |
| 2065 | */ |
| 2066 | s = (s | s << 16) & 0x03e07c1f; |
| 2067 | d = (d | d << 16) & 0x03e07c1f; |
| 2068 | d += (s - d) * alpha >> 5; |
| 2069 | d &= 0x03e07c1f; |
| 2070 | *dstp++ = d | d >> 16; |
| 2071 | s = *srcp++; |
| 2072 | d = *dstp; |
| 2073 | /* |
| 2074 | * shift out the middle component (green) to |
| 2075 | * the high 16 bits, and process all three RGB |
| 2076 | * components at the same time. |
| 2077 | */ |
| 2078 | s = (s | s << 16) & 0x03e07c1f; |
| 2079 | d = (d | d << 16) & 0x03e07c1f; |
| 2080 | d += (s - d) * alpha >> 5; |
| 2081 | d &= 0x03e07c1f; |
| 2082 | *dstp++ = d | d >> 16; |
| 2083 | },{ |
| 2084 | movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */ |
| 2085 | movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */ |
| 2086 | |
| 2087 | /* red -- process the bits in place */ |
| 2088 | psllq_i2r(5, mm4); /* turn MASKGREEN into MASKRED */ |
| 2089 | /* by reusing the GREEN mask we free up another mmx |
| 2090 | register to accumulate the result */ |
| 2091 | |
| 2092 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
| 2093 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
| 2094 | pand_r2r(mm4, mm5); /* src & MASKRED -> mm5 */ |
| 2095 | pand_r2r(mm4, mm6); /* dst & MASKRED -> mm6 */ |
| 2096 | |
| 2097 | /* blend */ |
| 2098 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
| 2099 | pmulhw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
| 2100 | /* 11 + 15 - 16 = 10 bits, uninteresting bits will be |
| 2101 | cleared by a MASK below */ |
| 2102 | psllw_i2r(5, mm5); /* mm5 << 5 -> mm5 */ |
| 2103 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
| 2104 | pand_r2r(mm4, mm6); /* mm6 & MASKRED -> mm6 */ |
| 2105 | |
| 2106 | psrlq_i2r(5, mm4); /* turn MASKRED back into MASKGREEN */ |
| 2107 | |
| 2108 | movq_r2r(mm6, mm1); /* save new reds in dsts */ |
| 2109 | |
| 2110 | /* green -- process the bits in place */ |
| 2111 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
| 2112 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
| 2113 | pand_r2r(mm4, mm5); /* src & MASKGREEN -> mm5 */ |
| 2114 | pand_r2r(mm4, mm6); /* dst & MASKGREEN -> mm6 */ |
| 2115 | |
| 2116 | /* blend */ |
| 2117 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
| 2118 | pmulhw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
| 2119 | /* 11 + 10 - 16 = 5 bits, so all the lower uninteresting |
| 2120 | bits are gone and the sign bits present */ |
| 2121 | psllw_i2r(5, mm5); /* mm5 << 5 -> mm5 */ |
| 2122 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
| 2123 | |
| 2124 | por_r2r(mm6, mm1); /* save new greens in dsts */ |
| 2125 | |
| 2126 | /* blue */ |
| 2127 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
| 2128 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
| 2129 | pand_r2r(mm7, mm5); /* src & MASKBLUE -> mm5[000b 000b 000b 000b] */ |
| 2130 | pand_r2r(mm7, mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
| 2131 | |
| 2132 | /* blend */ |
| 2133 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
| 2134 | pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
| 2135 | /* 11 + 5 = 16 bits, so the sign bits are lost and |
| 2136 | the interesting bits will need to be MASKed */ |
| 2137 | psrlw_i2r(11, mm5); /* mm5 >> 11 -> mm5 */ |
| 2138 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
| 2139 | pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
| 2140 | |
| 2141 | por_r2r(mm6, mm1); /* save new blues in dsts */ |
| 2142 | |
| 2143 | movq_r2m(mm1, *dstp);/* mm1 -> 4 dst pixels */ |
| 2144 | |
| 2145 | srcp += 4; |
| 2146 | dstp += 4; |
| 2147 | }, width); |
| 2148 | srcp += srcskip; |
| 2149 | dstp += dstskip; |
| 2150 | } |
| 2151 | emms(); |
| 2152 | } |
| 2153 | } |
| 2154 | /* End GCC_ASMBLIT */ |
| 2155 | |
| 2156 | #elif MSVC_ASMBLIT |
| 2157 | /* fast RGB565->RGB565 blending with surface alpha */ |
| 2158 | static void Blit565to565SurfaceAlphaMMX(SDL_BlitInfo *info) |
| 2159 | { |
| 2160 | unsigned alpha = info->src->alpha; |
| 2161 | if(alpha == 128) { |
| 2162 | Blit16to16SurfaceAlpha128(info, 0xf7de); |
| 2163 | } else { |
| 2164 | int width = info->d_width; |
| 2165 | int height = info->d_height; |
| 2166 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
| 2167 | int srcskip = info->s_skip >> 1; |
| 2168 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
| 2169 | int dstskip = info->d_skip >> 1; |
| 2170 | Uint32 s, d; |
| 2171 | |
| 2172 | __m64 src1, dst1, src2, dst2, gmask, bmask, mm_res, mm_alpha; |
| 2173 | |
| 2174 | alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
| 2175 | mm_alpha = _mm_set_pi32(0, alpha); /* 0000000A -> mm_alpha */ |
| 2176 | alpha >>= 3; /* downscale alpha to 5 bits */ |
| 2177 | |
| 2178 | mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
| 2179 | mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
| 2180 | /* position alpha to allow for mullo and mulhi on diff channels |
| 2181 | to reduce the number of operations */ |
| 2182 | mm_alpha = _mm_slli_si64(mm_alpha, 3); |
| 2183 | |
| 2184 | /* Setup the 565 color channel masks */ |
| 2185 | gmask = _mm_set_pi32(0x07E007E0, 0x07E007E0); /* MASKGREEN -> gmask */ |
| 2186 | bmask = _mm_set_pi32(0x001F001F, 0x001F001F); /* MASKBLUE -> bmask */ |
| 2187 | |
| 2188 | while(height--) { |
| 2189 | DUFFS_LOOP_QUATRO2( |
| 2190 | { |
| 2191 | s = *srcp++; |
| 2192 | d = *dstp; |
| 2193 | /* |
| 2194 | * shift out the middle component (green) to |
| 2195 | * the high 16 bits, and process all three RGB |
| 2196 | * components at the same time. |
| 2197 | */ |
| 2198 | s = (s | s << 16) & 0x07e0f81f; |
| 2199 | d = (d | d << 16) & 0x07e0f81f; |
| 2200 | d += (s - d) * alpha >> 5; |
| 2201 | d &= 0x07e0f81f; |
| 2202 | *dstp++ = (Uint16)(d | d >> 16); |
| 2203 | },{ |
| 2204 | s = *srcp++; |
| 2205 | d = *dstp; |
| 2206 | /* |
| 2207 | * shift out the middle component (green) to |
| 2208 | * the high 16 bits, and process all three RGB |
| 2209 | * components at the same time. |
| 2210 | */ |
| 2211 | s = (s | s << 16) & 0x07e0f81f; |
| 2212 | d = (d | d << 16) & 0x07e0f81f; |
| 2213 | d += (s - d) * alpha >> 5; |
| 2214 | d &= 0x07e0f81f; |
| 2215 | *dstp++ = (Uint16)(d | d >> 16); |
| 2216 | s = *srcp++; |
| 2217 | d = *dstp; |
| 2218 | /* |
| 2219 | * shift out the middle component (green) to |
| 2220 | * the high 16 bits, and process all three RGB |
| 2221 | * components at the same time. |
| 2222 | */ |
| 2223 | s = (s | s << 16) & 0x07e0f81f; |
| 2224 | d = (d | d << 16) & 0x07e0f81f; |
| 2225 | d += (s - d) * alpha >> 5; |
| 2226 | d &= 0x07e0f81f; |
| 2227 | *dstp++ = (Uint16)(d | d >> 16); |
| 2228 | },{ |
| 2229 | src1 = *(__m64*)srcp; /* 4 src pixels -> src1 */ |
| 2230 | dst1 = *(__m64*)dstp; /* 4 dst pixels -> dst1 */ |
| 2231 | |
| 2232 | /* red */ |
| 2233 | src2 = src1; |
| 2234 | src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 [000r 000r 000r 000r] */ |
| 2235 | |
| 2236 | dst2 = dst1; |
| 2237 | dst2 = _mm_srli_pi16(dst2, 11); /* dst2 >> 11 -> dst2 [000r 000r 000r 000r] */ |
| 2238 | |
| 2239 | /* blend */ |
| 2240 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| 2241 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| 2242 | src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 */ |
| 2243 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| 2244 | dst2 = _mm_slli_pi16(dst2, 11); /* dst2 << 11 -> dst2 */ |
| 2245 | |
| 2246 | mm_res = dst2; /* RED -> mm_res */ |
| 2247 | |
| 2248 | /* green -- process the bits in place */ |
| 2249 | src2 = src1; |
| 2250 | src2 = _mm_and_si64(src2, gmask); /* src & MASKGREEN -> src2 */ |
| 2251 | |
| 2252 | dst2 = dst1; |
| 2253 | dst2 = _mm_and_si64(dst2, gmask); /* dst & MASKGREEN -> dst2 */ |
| 2254 | |
| 2255 | /* blend */ |
| 2256 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| 2257 | src2 = _mm_mulhi_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| 2258 | src2 = _mm_slli_pi16(src2, 5); /* src2 << 5 -> src2 */ |
| 2259 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| 2260 | |
| 2261 | mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN -> mm_res */ |
| 2262 | |
| 2263 | /* blue */ |
| 2264 | src2 = src1; |
| 2265 | src2 = _mm_and_si64(src2, bmask); /* src & MASKBLUE -> src2[000b 000b 000b 000b] */ |
| 2266 | |
| 2267 | dst2 = dst1; |
| 2268 | dst2 = _mm_and_si64(dst2, bmask); /* dst & MASKBLUE -> dst2[000b 000b 000b 000b] */ |
| 2269 | |
| 2270 | /* blend */ |
| 2271 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| 2272 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| 2273 | src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 */ |
| 2274 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| 2275 | dst2 = _mm_and_si64(dst2, bmask); /* dst2 & MASKBLUE -> dst2 */ |
| 2276 | |
| 2277 | mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN | BLUE -> mm_res */ |
| 2278 | |
| 2279 | *(__m64*)dstp = mm_res; /* mm_res -> 4 dst pixels */ |
| 2280 | |
| 2281 | srcp += 4; |
| 2282 | dstp += 4; |
| 2283 | }, width); |
| 2284 | srcp += srcskip; |
| 2285 | dstp += dstskip; |
| 2286 | } |
| 2287 | _mm_empty(); |
| 2288 | } |
| 2289 | } |
| 2290 | |
| 2291 | /* fast RGB555->RGB555 blending with surface alpha */ |
| 2292 | static void Blit555to555SurfaceAlphaMMX(SDL_BlitInfo *info) |
| 2293 | { |
| 2294 | unsigned alpha = info->src->alpha; |
| 2295 | if(alpha == 128) { |
| 2296 | Blit16to16SurfaceAlpha128(info, 0xfbde); |
| 2297 | } else { |
| 2298 | int width = info->d_width; |
| 2299 | int height = info->d_height; |
| 2300 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
| 2301 | int srcskip = info->s_skip >> 1; |
| 2302 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
| 2303 | int dstskip = info->d_skip >> 1; |
| 2304 | Uint32 s, d; |
| 2305 | |
| 2306 | __m64 src1, dst1, src2, dst2, rmask, gmask, bmask, mm_res, mm_alpha; |
| 2307 | |
| 2308 | alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
| 2309 | mm_alpha = _mm_set_pi32(0, alpha); /* 0000000A -> mm_alpha */ |
| 2310 | alpha >>= 3; /* downscale alpha to 5 bits */ |
| 2311 | |
| 2312 | mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
| 2313 | mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
| 2314 | /* position alpha to allow for mullo and mulhi on diff channels |
| 2315 | to reduce the number of operations */ |
| 2316 | mm_alpha = _mm_slli_si64(mm_alpha, 3); |
| 2317 | |
| 2318 | /* Setup the 555 color channel masks */ |
| 2319 | rmask = _mm_set_pi32(0x7C007C00, 0x7C007C00); /* MASKRED -> rmask */ |
| 2320 | gmask = _mm_set_pi32(0x03E003E0, 0x03E003E0); /* MASKGREEN -> gmask */ |
| 2321 | bmask = _mm_set_pi32(0x001F001F, 0x001F001F); /* MASKBLUE -> bmask */ |
| 2322 | |
| 2323 | while(height--) { |
| 2324 | DUFFS_LOOP_QUATRO2( |
| 2325 | { |
| 2326 | s = *srcp++; |
| 2327 | d = *dstp; |
| 2328 | /* |
| 2329 | * shift out the middle component (green) to |
| 2330 | * the high 16 bits, and process all three RGB |
| 2331 | * components at the same time. |
| 2332 | */ |
| 2333 | s = (s | s << 16) & 0x03e07c1f; |
| 2334 | d = (d | d << 16) & 0x03e07c1f; |
| 2335 | d += (s - d) * alpha >> 5; |
| 2336 | d &= 0x03e07c1f; |
| 2337 | *dstp++ = (Uint16)(d | d >> 16); |
| 2338 | },{ |
| 2339 | s = *srcp++; |
| 2340 | d = *dstp; |
| 2341 | /* |
| 2342 | * shift out the middle component (green) to |
| 2343 | * the high 16 bits, and process all three RGB |
| 2344 | * components at the same time. |
| 2345 | */ |
| 2346 | s = (s | s << 16) & 0x03e07c1f; |
| 2347 | d = (d | d << 16) & 0x03e07c1f; |
| 2348 | d += (s - d) * alpha >> 5; |
| 2349 | d &= 0x03e07c1f; |
| 2350 | *dstp++ = (Uint16)(d | d >> 16); |
| 2351 | s = *srcp++; |
| 2352 | d = *dstp; |
| 2353 | /* |
| 2354 | * shift out the middle component (green) to |
| 2355 | * the high 16 bits, and process all three RGB |
| 2356 | * components at the same time. |
| 2357 | */ |
| 2358 | s = (s | s << 16) & 0x03e07c1f; |
| 2359 | d = (d | d << 16) & 0x03e07c1f; |
| 2360 | d += (s - d) * alpha >> 5; |
| 2361 | d &= 0x03e07c1f; |
| 2362 | *dstp++ = (Uint16)(d | d >> 16); |
| 2363 | },{ |
| 2364 | src1 = *(__m64*)srcp; /* 4 src pixels -> src1 */ |
| 2365 | dst1 = *(__m64*)dstp; /* 4 dst pixels -> dst1 */ |
| 2366 | |
| 2367 | /* red -- process the bits in place */ |
| 2368 | src2 = src1; |
| 2369 | src2 = _mm_and_si64(src2, rmask); /* src & MASKRED -> src2 */ |
| 2370 | |
| 2371 | dst2 = dst1; |
| 2372 | dst2 = _mm_and_si64(dst2, rmask); /* dst & MASKRED -> dst2 */ |
| 2373 | |
| 2374 | /* blend */ |
| 2375 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| 2376 | src2 = _mm_mulhi_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| 2377 | src2 = _mm_slli_pi16(src2, 5); /* src2 << 5 -> src2 */ |
| 2378 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| 2379 | dst2 = _mm_and_si64(dst2, rmask); /* dst2 & MASKRED -> dst2 */ |
| 2380 | |
| 2381 | mm_res = dst2; /* RED -> mm_res */ |
| 2382 | |
| 2383 | /* green -- process the bits in place */ |
| 2384 | src2 = src1; |
| 2385 | src2 = _mm_and_si64(src2, gmask); /* src & MASKGREEN -> src2 */ |
| 2386 | |
| 2387 | dst2 = dst1; |
| 2388 | dst2 = _mm_and_si64(dst2, gmask); /* dst & MASKGREEN -> dst2 */ |
| 2389 | |
| 2390 | /* blend */ |
| 2391 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| 2392 | src2 = _mm_mulhi_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| 2393 | src2 = _mm_slli_pi16(src2, 5); /* src2 << 5 -> src2 */ |
| 2394 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| 2395 | |
| 2396 | mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN -> mm_res */ |
| 2397 | |
| 2398 | /* blue */ |
| 2399 | src2 = src1; /* src -> src2 */ |
| 2400 | src2 = _mm_and_si64(src2, bmask); /* src & MASKBLUE -> src2[000b 000b 000b 000b] */ |
| 2401 | |
| 2402 | dst2 = dst1; /* dst -> dst2 */ |
| 2403 | dst2 = _mm_and_si64(dst2, bmask); /* dst & MASKBLUE -> dst2[000b 000b 000b 000b] */ |
| 2404 | |
| 2405 | /* blend */ |
| 2406 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| 2407 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| 2408 | src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 */ |
| 2409 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| 2410 | dst2 = _mm_and_si64(dst2, bmask); /* dst2 & MASKBLUE -> dst2 */ |
| 2411 | |
| 2412 | mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN | BLUE -> mm_res */ |
| 2413 | |
| 2414 | *(__m64*)dstp = mm_res; /* mm_res -> 4 dst pixels */ |
| 2415 | |
| 2416 | srcp += 4; |
| 2417 | dstp += 4; |
| 2418 | }, width); |
| 2419 | srcp += srcskip; |
| 2420 | dstp += dstskip; |
| 2421 | } |
| 2422 | _mm_empty(); |
| 2423 | } |
| 2424 | } |
| 2425 | #endif /* GCC_ASMBLIT, MSVC_ASMBLIT */ |
| 2426 | |
| 2427 | /* fast RGB565->RGB565 blending with surface alpha */ |
| 2428 | static void Blit565to565SurfaceAlpha(SDL_BlitInfo *info) |
| 2429 | { |
| 2430 | unsigned alpha = info->src->alpha; |
| 2431 | if(alpha == 128) { |
| 2432 | Blit16to16SurfaceAlpha128(info, 0xf7de); |
| 2433 | } else { |
| 2434 | int width = info->d_width; |
| 2435 | int height = info->d_height; |
| 2436 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
| 2437 | int srcskip = info->s_skip >> 1; |
| 2438 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
| 2439 | int dstskip = info->d_skip >> 1; |
| 2440 | alpha >>= 3; /* downscale alpha to 5 bits */ |
| 2441 | |
| 2442 | while(height--) { |
| 2443 | DUFFS_LOOP4({ |
| 2444 | Uint32 s = *srcp++; |
| 2445 | Uint32 d = *dstp; |
| 2446 | /* |
| 2447 | * shift out the middle component (green) to |
| 2448 | * the high 16 bits, and process all three RGB |
| 2449 | * components at the same time. |
| 2450 | */ |
| 2451 | s = (s | s << 16) & 0x07e0f81f; |
| 2452 | d = (d | d << 16) & 0x07e0f81f; |
| 2453 | d += (s - d) * alpha >> 5; |
| 2454 | d &= 0x07e0f81f; |
| 2455 | *dstp++ = (Uint16)(d | d >> 16); |
| 2456 | }, width); |
| 2457 | srcp += srcskip; |
| 2458 | dstp += dstskip; |
| 2459 | } |
| 2460 | } |
| 2461 | } |
| 2462 | |
| 2463 | /* fast RGB555->RGB555 blending with surface alpha */ |
| 2464 | static void Blit555to555SurfaceAlpha(SDL_BlitInfo *info) |
| 2465 | { |
| 2466 | unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
| 2467 | if(alpha == 128) { |
| 2468 | Blit16to16SurfaceAlpha128(info, 0xfbde); |
| 2469 | } else { |
| 2470 | int width = info->d_width; |
| 2471 | int height = info->d_height; |
| 2472 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
| 2473 | int srcskip = info->s_skip >> 1; |
| 2474 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
| 2475 | int dstskip = info->d_skip >> 1; |
| 2476 | alpha >>= 3; /* downscale alpha to 5 bits */ |
| 2477 | |
| 2478 | while(height--) { |
| 2479 | DUFFS_LOOP4({ |
| 2480 | Uint32 s = *srcp++; |
| 2481 | Uint32 d = *dstp; |
| 2482 | /* |
| 2483 | * shift out the middle component (green) to |
| 2484 | * the high 16 bits, and process all three RGB |
| 2485 | * components at the same time. |
| 2486 | */ |
| 2487 | s = (s | s << 16) & 0x03e07c1f; |
| 2488 | d = (d | d << 16) & 0x03e07c1f; |
| 2489 | d += (s - d) * alpha >> 5; |
| 2490 | d &= 0x03e07c1f; |
| 2491 | *dstp++ = (Uint16)(d | d >> 16); |
| 2492 | }, width); |
| 2493 | srcp += srcskip; |
| 2494 | dstp += dstskip; |
| 2495 | } |
| 2496 | } |
| 2497 | } |
| 2498 | |
| 2499 | /* fast ARGB8888->RGB565 blending with pixel alpha */ |
| 2500 | static void BlitARGBto565PixelAlpha(SDL_BlitInfo *info) |
| 2501 | { |
| 2502 | int width = info->d_width; |
| 2503 | int height = info->d_height; |
| 2504 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 2505 | int srcskip = info->s_skip >> 2; |
| 2506 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
| 2507 | int dstskip = info->d_skip >> 1; |
| 2508 | |
| 2509 | while(height--) { |
| 2510 | DUFFS_LOOP4({ |
| 2511 | Uint32 s = *srcp; |
| 2512 | unsigned alpha = s >> 27; /* downscale alpha to 5 bits */ |
| 2513 | /* FIXME: Here we special-case opaque alpha since the |
| 2514 | compositioning used (>>8 instead of /255) doesn't handle |
| 2515 | it correctly. Also special-case alpha=0 for speed? |
| 2516 | Benchmark this! */ |
| 2517 | if(alpha) { |
| 2518 | if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
| 2519 | *dstp = (Uint16)((s >> 8 & 0xf800) + (s >> 5 & 0x7e0) + (s >> 3 & 0x1f)); |
| 2520 | } else { |
| 2521 | Uint32 d = *dstp; |
| 2522 | /* |
| 2523 | * convert source and destination to G0RAB65565 |
| 2524 | * and blend all components at the same time |
| 2525 | */ |
| 2526 | s = ((s & 0xfc00) << 11) + (s >> 8 & 0xf800) |
| 2527 | + (s >> 3 & 0x1f); |
| 2528 | d = (d | d << 16) & 0x07e0f81f; |
| 2529 | d += (s - d) * alpha >> 5; |
| 2530 | d &= 0x07e0f81f; |
| 2531 | *dstp = (Uint16)(d | d >> 16); |
| 2532 | } |
| 2533 | } |
| 2534 | srcp++; |
| 2535 | dstp++; |
| 2536 | }, width); |
| 2537 | srcp += srcskip; |
| 2538 | dstp += dstskip; |
| 2539 | } |
| 2540 | } |
| 2541 | |
| 2542 | /* fast ARGB8888->RGB555 blending with pixel alpha */ |
| 2543 | static void BlitARGBto555PixelAlpha(SDL_BlitInfo *info) |
| 2544 | { |
| 2545 | int width = info->d_width; |
| 2546 | int height = info->d_height; |
| 2547 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
| 2548 | int srcskip = info->s_skip >> 2; |
| 2549 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
| 2550 | int dstskip = info->d_skip >> 1; |
| 2551 | |
| 2552 | while(height--) { |
| 2553 | DUFFS_LOOP4({ |
| 2554 | unsigned alpha; |
| 2555 | Uint32 s = *srcp; |
| 2556 | alpha = s >> 27; /* downscale alpha to 5 bits */ |
| 2557 | /* FIXME: Here we special-case opaque alpha since the |
| 2558 | compositioning used (>>8 instead of /255) doesn't handle |
| 2559 | it correctly. Also special-case alpha=0 for speed? |
| 2560 | Benchmark this! */ |
| 2561 | if(alpha) { |
| 2562 | if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
| 2563 | *dstp = (Uint16)((s >> 9 & 0x7c00) + (s >> 6 & 0x3e0) + (s >> 3 & 0x1f)); |
| 2564 | } else { |
| 2565 | Uint32 d = *dstp; |
| 2566 | /* |
| 2567 | * convert source and destination to G0RAB65565 |
| 2568 | * and blend all components at the same time |
| 2569 | */ |
| 2570 | s = ((s & 0xf800) << 10) + (s >> 9 & 0x7c00) |
| 2571 | + (s >> 3 & 0x1f); |
| 2572 | d = (d | d << 16) & 0x03e07c1f; |
| 2573 | d += (s - d) * alpha >> 5; |
| 2574 | d &= 0x03e07c1f; |
| 2575 | *dstp = (Uint16)(d | d >> 16); |
| 2576 | } |
| 2577 | } |
| 2578 | srcp++; |
| 2579 | dstp++; |
| 2580 | }, width); |
| 2581 | srcp += srcskip; |
| 2582 | dstp += dstskip; |
| 2583 | } |
| 2584 | } |
| 2585 | |
| 2586 | /* General (slow) N->N blending with per-surface alpha */ |
| 2587 | static void BlitNtoNSurfaceAlpha(SDL_BlitInfo *info) |
| 2588 | { |
| 2589 | int width = info->d_width; |
| 2590 | int height = info->d_height; |
| 2591 | Uint8 *src = info->s_pixels; |
| 2592 | int srcskip = info->s_skip; |
| 2593 | Uint8 *dst = info->d_pixels; |
| 2594 | int dstskip = info->d_skip; |
| 2595 | SDL_PixelFormat *srcfmt = info->src; |
| 2596 | SDL_PixelFormat *dstfmt = info->dst; |
| 2597 | int srcbpp = srcfmt->BytesPerPixel; |
| 2598 | int dstbpp = dstfmt->BytesPerPixel; |
| 2599 | unsigned sA = srcfmt->alpha; |
| 2600 | unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
| 2601 | |
| 2602 | if(sA) { |
| 2603 | while ( height-- ) { |
| 2604 | DUFFS_LOOP4( |
| 2605 | { |
| 2606 | Uint32 Pixel; |
| 2607 | unsigned sR; |
| 2608 | unsigned sG; |
| 2609 | unsigned sB; |
| 2610 | unsigned dR; |
| 2611 | unsigned dG; |
| 2612 | unsigned dB; |
| 2613 | DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel, sR, sG, sB); |
| 2614 | DISEMBLE_RGB(dst, dstbpp, dstfmt, Pixel, dR, dG, dB); |
| 2615 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
| 2616 | ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
| 2617 | src += srcbpp; |
| 2618 | dst += dstbpp; |
| 2619 | }, |
| 2620 | width); |
| 2621 | src += srcskip; |
| 2622 | dst += dstskip; |
| 2623 | } |
| 2624 | } |
| 2625 | } |
| 2626 | |
| 2627 | /* General (slow) colorkeyed N->N blending with per-surface alpha */ |
| 2628 | static void BlitNtoNSurfaceAlphaKey(SDL_BlitInfo *info) |
| 2629 | { |
| 2630 | int width = info->d_width; |
| 2631 | int height = info->d_height; |
| 2632 | Uint8 *src = info->s_pixels; |
| 2633 | int srcskip = info->s_skip; |
| 2634 | Uint8 *dst = info->d_pixels; |
| 2635 | int dstskip = info->d_skip; |
| 2636 | SDL_PixelFormat *srcfmt = info->src; |
| 2637 | SDL_PixelFormat *dstfmt = info->dst; |
| 2638 | Uint32 ckey = srcfmt->colorkey; |
| 2639 | int srcbpp = srcfmt->BytesPerPixel; |
| 2640 | int dstbpp = dstfmt->BytesPerPixel; |
| 2641 | unsigned sA = srcfmt->alpha; |
| 2642 | unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
| 2643 | |
| 2644 | while ( height-- ) { |
| 2645 | DUFFS_LOOP4( |
| 2646 | { |
| 2647 | Uint32 Pixel; |
| 2648 | unsigned sR; |
| 2649 | unsigned sG; |
| 2650 | unsigned sB; |
| 2651 | unsigned dR; |
| 2652 | unsigned dG; |
| 2653 | unsigned dB; |
| 2654 | RETRIEVE_RGB_PIXEL(src, srcbpp, Pixel); |
| 2655 | if(sA && Pixel != ckey) { |
| 2656 | RGB_FROM_PIXEL(Pixel, srcfmt, sR, sG, sB); |
| 2657 | DISEMBLE_RGB(dst, dstbpp, dstfmt, Pixel, dR, dG, dB); |
| 2658 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
| 2659 | ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
| 2660 | } |
| 2661 | src += srcbpp; |
| 2662 | dst += dstbpp; |
| 2663 | }, |
| 2664 | width); |
| 2665 | src += srcskip; |
| 2666 | dst += dstskip; |
| 2667 | } |
| 2668 | } |
| 2669 | |
| 2670 | /* General (slow) N->N blending with pixel alpha */ |
| 2671 | static void BlitNtoNPixelAlpha(SDL_BlitInfo *info) |
| 2672 | { |
| 2673 | int width = info->d_width; |
| 2674 | int height = info->d_height; |
| 2675 | Uint8 *src = info->s_pixels; |
| 2676 | int srcskip = info->s_skip; |
| 2677 | Uint8 *dst = info->d_pixels; |
| 2678 | int dstskip = info->d_skip; |
| 2679 | SDL_PixelFormat *srcfmt = info->src; |
| 2680 | SDL_PixelFormat *dstfmt = info->dst; |
| 2681 | |
| 2682 | int srcbpp; |
| 2683 | int dstbpp; |
| 2684 | |
| 2685 | /* Set up some basic variables */ |
| 2686 | srcbpp = srcfmt->BytesPerPixel; |
| 2687 | dstbpp = dstfmt->BytesPerPixel; |
| 2688 | |
| 2689 | /* FIXME: for 8bpp source alpha, this doesn't get opaque values |
| 2690 | quite right. for <8bpp source alpha, it gets them very wrong |
| 2691 | (check all macros!) |
| 2692 | It is unclear whether there is a good general solution that doesn't |
| 2693 | need a branch (or a divide). */ |
| 2694 | while ( height-- ) { |
| 2695 | DUFFS_LOOP4( |
| 2696 | { |
| 2697 | Uint32 Pixel; |
| 2698 | unsigned sR; |
| 2699 | unsigned sG; |
| 2700 | unsigned sB; |
| 2701 | unsigned dR; |
| 2702 | unsigned dG; |
| 2703 | unsigned dB; |
| 2704 | unsigned sA; |
| 2705 | unsigned dA; |
| 2706 | DISEMBLE_RGBA(src, srcbpp, srcfmt, Pixel, sR, sG, sB, sA); |
| 2707 | if(sA) { |
| 2708 | DISEMBLE_RGBA(dst, dstbpp, dstfmt, Pixel, dR, dG, dB, dA); |
| 2709 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
| 2710 | ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
| 2711 | } |
| 2712 | src += srcbpp; |
| 2713 | dst += dstbpp; |
| 2714 | }, |
| 2715 | width); |
| 2716 | src += srcskip; |
| 2717 | dst += dstskip; |
| 2718 | } |
| 2719 | } |
| 2720 | |
| 2721 | |
| 2722 | SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int blit_index) |
| 2723 | { |
| 2724 | SDL_PixelFormat *sf = surface->format; |
| 2725 | SDL_PixelFormat *df = surface->map->dst->format; |
| 2726 | |
| 2727 | if(sf->Amask == 0) { |
| 2728 | if((surface->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) { |
| 2729 | if(df->BytesPerPixel == 1) |
| 2730 | return BlitNto1SurfaceAlphaKey; |
| 2731 | else |
| 2732 | #if SDL_ALTIVEC_BLITTERS |
| 2733 | if (sf->BytesPerPixel == 4 && df->BytesPerPixel == 4 && |
| 2734 | !(surface->map->dst->flags & SDL_HWSURFACE) && SDL_HasAltiVec()) |
| 2735 | return Blit32to32SurfaceAlphaKeyAltivec; |
| 2736 | else |
| 2737 | #endif |
| 2738 | return BlitNtoNSurfaceAlphaKey; |
| 2739 | } else { |
| 2740 | /* Per-surface alpha blits */ |
| 2741 | switch(df->BytesPerPixel) { |
| 2742 | case 1: |
| 2743 | return BlitNto1SurfaceAlpha; |
| 2744 | |
| 2745 | case 2: |
| 2746 | if(surface->map->identity) { |
| 2747 | if(df->Gmask == 0x7e0) |
| 2748 | { |
| 2749 | #if MMX_ASMBLIT |
| 2750 | if(SDL_HasMMX()) |
| 2751 | return Blit565to565SurfaceAlphaMMX; |
| 2752 | else |
| 2753 | #endif |
| 2754 | return Blit565to565SurfaceAlpha; |
| 2755 | } |
| 2756 | else if(df->Gmask == 0x3e0) |
| 2757 | { |
| 2758 | #if MMX_ASMBLIT |
| 2759 | if(SDL_HasMMX()) |
| 2760 | return Blit555to555SurfaceAlphaMMX; |
| 2761 | else |
| 2762 | #endif |
| 2763 | return Blit555to555SurfaceAlpha; |
| 2764 | } |
| 2765 | } |
| 2766 | return BlitNtoNSurfaceAlpha; |
| 2767 | |
| 2768 | case 4: |
| 2769 | if(sf->Rmask == df->Rmask |
| 2770 | && sf->Gmask == df->Gmask |
| 2771 | && sf->Bmask == df->Bmask |
| 2772 | && sf->BytesPerPixel == 4) |
| 2773 | { |
| 2774 | #if MMX_ASMBLIT |
| 2775 | if(sf->Rshift % 8 == 0 |
| 2776 | && sf->Gshift % 8 == 0 |
| 2777 | && sf->Bshift % 8 == 0 |
| 2778 | && SDL_HasMMX()) |
| 2779 | return BlitRGBtoRGBSurfaceAlphaMMX; |
| 2780 | #endif |
| 2781 | if((sf->Rmask | sf->Gmask | sf->Bmask) == 0xffffff) |
| 2782 | { |
| 2783 | #if SDL_ALTIVEC_BLITTERS |
| 2784 | if(!(surface->map->dst->flags & SDL_HWSURFACE) |
| 2785 | && SDL_HasAltiVec()) |
| 2786 | return BlitRGBtoRGBSurfaceAlphaAltivec; |
| 2787 | #endif |
| 2788 | return BlitRGBtoRGBSurfaceAlpha; |
| 2789 | } |
| 2790 | } |
| 2791 | #if SDL_ALTIVEC_BLITTERS |
| 2792 | if((sf->BytesPerPixel == 4) && |
| 2793 | !(surface->map->dst->flags & SDL_HWSURFACE) && SDL_HasAltiVec()) |
| 2794 | return Blit32to32SurfaceAlphaAltivec; |
| 2795 | else |
| 2796 | #endif |
| 2797 | return BlitNtoNSurfaceAlpha; |
| 2798 | |
| 2799 | case 3: |
| 2800 | default: |
| 2801 | return BlitNtoNSurfaceAlpha; |
| 2802 | } |
| 2803 | } |
| 2804 | } else { |
| 2805 | /* Per-pixel alpha blits */ |
| 2806 | switch(df->BytesPerPixel) { |
| 2807 | case 1: |
| 2808 | return BlitNto1PixelAlpha; |
| 2809 | |
| 2810 | case 2: |
| 2811 | #if SDL_ALTIVEC_BLITTERS |
| 2812 | if(sf->BytesPerPixel == 4 && !(surface->map->dst->flags & SDL_HWSURFACE) && |
| 2813 | df->Gmask == 0x7e0 && |
| 2814 | df->Bmask == 0x1f && SDL_HasAltiVec()) |
| 2815 | return Blit32to565PixelAlphaAltivec; |
| 2816 | else |
| 2817 | #endif |
| 2818 | if(sf->BytesPerPixel == 4 && sf->Amask == 0xff000000 |
| 2819 | && sf->Gmask == 0xff00 |
| 2820 | && ((sf->Rmask == 0xff && df->Rmask == 0x1f) |
| 2821 | || (sf->Bmask == 0xff && df->Bmask == 0x1f))) { |
| 2822 | if(df->Gmask == 0x7e0) |
| 2823 | return BlitARGBto565PixelAlpha; |
| 2824 | else if(df->Gmask == 0x3e0) |
| 2825 | return BlitARGBto555PixelAlpha; |
| 2826 | } |
| 2827 | return BlitNtoNPixelAlpha; |
| 2828 | |
| 2829 | case 4: |
| 2830 | if(sf->Rmask == df->Rmask |
| 2831 | && sf->Gmask == df->Gmask |
| 2832 | && sf->Bmask == df->Bmask |
| 2833 | && sf->BytesPerPixel == 4) |
| 2834 | { |
| 2835 | #if MMX_ASMBLIT |
| 2836 | if(sf->Rshift % 8 == 0 |
| 2837 | && sf->Gshift % 8 == 0 |
| 2838 | && sf->Bshift % 8 == 0 |
| 2839 | && sf->Ashift % 8 == 0 |
| 2840 | && sf->Aloss == 0) |
| 2841 | { |
| 2842 | if(SDL_Has3DNow()) |
| 2843 | return BlitRGBtoRGBPixelAlphaMMX3DNOW; |
| 2844 | if(SDL_HasMMX()) |
| 2845 | return BlitRGBtoRGBPixelAlphaMMX; |
| 2846 | } |
| 2847 | #endif |
| 2848 | if(sf->Amask == 0xff000000) |
| 2849 | { |
| 2850 | #if SDL_ALTIVEC_BLITTERS |
| 2851 | if(!(surface->map->dst->flags & SDL_HWSURFACE) |
| 2852 | && SDL_HasAltiVec()) |
| 2853 | return BlitRGBtoRGBPixelAlphaAltivec; |
| 2854 | #endif |
| 2855 | return BlitRGBtoRGBPixelAlpha; |
| 2856 | } |
| 2857 | } |
| 2858 | #if SDL_ALTIVEC_BLITTERS |
| 2859 | if (sf->Amask && sf->BytesPerPixel == 4 && |
| 2860 | !(surface->map->dst->flags & SDL_HWSURFACE) && SDL_HasAltiVec()) |
| 2861 | return Blit32to32PixelAlphaAltivec; |
| 2862 | else |
| 2863 | #endif |
| 2864 | return BlitNtoNPixelAlpha; |
| 2865 | |
| 2866 | case 3: |
| 2867 | default: |
| 2868 | return BlitNtoNPixelAlpha; |
| 2869 | } |
| 2870 | } |
| 2871 | } |
| 2872 | |