kc3-lang/SDL/src/video/SDL_blit.h
Branch
-
src/video/SDL_blit.h
-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589
/* Simple DirectMedia Layer Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org> This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. */ #include "../SDL_internal.h" #ifndef SDL_blit_h_ #define SDL_blit_h_ #include "SDL_cpuinfo.h" #include "SDL_endian.h" #include "SDL_surface.h" /* pixman ARM blitters are 32 bit only : */ #if defined(__aarch64__) || defined(_M_ARM64) #undef SDL_ARM_SIMD_BLITTERS #undef SDL_ARM_NEON_BLITTERS #endif /* Table to do pixel byte expansion */ extern Uint8 *SDL_expand_byte[9]; /* SDL blit copy flags */ #define SDL_COPY_MODULATE_COLOR 0x00000001 #define SDL_COPY_MODULATE_ALPHA 0x00000002 #define SDL_COPY_BLEND 0x00000010 #define SDL_COPY_ADD 0x00000020 #define SDL_COPY_MOD 0x00000040 #define SDL_COPY_MUL 0x00000080 #define SDL_COPY_COLORKEY 0x00000100 #define SDL_COPY_NEAREST 0x00000200 #define SDL_COPY_RLE_DESIRED 0x00001000 #define SDL_COPY_RLE_COLORKEY 0x00002000 #define SDL_COPY_RLE_ALPHAKEY 0x00004000 #define SDL_COPY_RLE_MASK (SDL_COPY_RLE_DESIRED | SDL_COPY_RLE_COLORKEY | SDL_COPY_RLE_ALPHAKEY) /* SDL blit CPU flags */ #define SDL_CPU_ANY 0x00000000 #define SDL_CPU_MMX 0x00000001 #define SDL_CPU_3DNOW 0x00000002 #define SDL_CPU_SSE 0x00000004 #define SDL_CPU_SSE2 0x00000008 #define SDL_CPU_ALTIVEC_PREFETCH 0x00000010 #define SDL_CPU_ALTIVEC_NOPREFETCH 0x00000020 typedef struct { Uint8 *src; int src_w, src_h; int src_pitch; int src_skip; Uint8 *dst; int dst_w, dst_h; int dst_pitch; int dst_skip; SDL_PixelFormat *src_fmt; SDL_PixelFormat *dst_fmt; Uint8 *table; int flags; Uint32 colorkey; Uint8 r, g, b, a; } SDL_BlitInfo; typedef void (*SDL_BlitFunc)(SDL_BlitInfo *info); typedef struct { Uint32 src_format; Uint32 dst_format; int flags; int cpu; SDL_BlitFunc func; } SDL_BlitFuncEntry; /* Blit mapping definition */ /* typedef'ed in SDL_surface.h */ struct SDL_BlitMap { SDL_Surface *dst; int identity; SDL_blit blit; void *data; SDL_BlitInfo info; /* the version count matches the destination; mismatch indicates an invalid mapping */ Uint32 dst_palette_version; Uint32 src_palette_version; }; /* Functions found in SDL_blit.c */ extern int SDL_CalculateBlit(SDL_Surface *surface); /* Functions found in SDL_blit_*.c */ extern SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface); extern SDL_BlitFunc SDL_CalculateBlit1(SDL_Surface *surface); extern SDL_BlitFunc SDL_CalculateBlitN(SDL_Surface *surface); extern SDL_BlitFunc SDL_CalculateBlitA(SDL_Surface *surface); /* * Useful macros for blitting routines */ #if defined(__GNUC__) #define DECLARE_ALIGNED(t, v, a) t __attribute__((aligned(a))) v #elif defined(_MSC_VER) #define DECLARE_ALIGNED(t, v, a) __declspec(align(a)) t v #else #define DECLARE_ALIGNED(t, v, a) t v #endif /* Load pixel of the specified format from a buffer and get its R-G-B values */ #define RGB_FROM_PIXEL(Pixel, fmt, r, g, b) \ { \ r = SDL_expand_byte[fmt->Rloss][((Pixel & fmt->Rmask) >> fmt->Rshift)]; \ g = SDL_expand_byte[fmt->Gloss][((Pixel & fmt->Gmask) >> fmt->Gshift)]; \ b = SDL_expand_byte[fmt->Bloss][((Pixel & fmt->Bmask) >> fmt->Bshift)]; \ } #define RGB_FROM_RGB565(Pixel, r, g, b) \ { \ r = SDL_expand_byte[3][((Pixel & 0xF800) >> 11)]; \ g = SDL_expand_byte[2][((Pixel & 0x07E0) >> 5)]; \ b = SDL_expand_byte[3][(Pixel & 0x001F)]; \ } #define RGB_FROM_RGB555(Pixel, r, g, b) \ { \ r = SDL_expand_byte[3][((Pixel & 0x7C00) >> 10)]; \ g = SDL_expand_byte[3][((Pixel & 0x03E0) >> 5)]; \ b = SDL_expand_byte[3][(Pixel & 0x001F)]; \ } #define RGB_FROM_RGB888(Pixel, r, g, b) \ { \ r = ((Pixel & 0xFF0000) >> 16); \ g = ((Pixel & 0xFF00) >> 8); \ b = (Pixel & 0xFF); \ } #define RETRIEVE_RGB_PIXEL(buf, bpp, Pixel) \ do { \ switch (bpp) { \ case 1: \ Pixel = *((Uint8 *)(buf)); \ break; \ \ case 2: \ Pixel = *((Uint16 *)(buf)); \ break; \ \ case 3: \ { \ Uint8 *B = (Uint8 *)(buf); \ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \ } else { \ Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \ } \ } break; \ \ case 4: \ Pixel = *((Uint32 *)(buf)); \ break; \ \ default: \ Pixel = 0; /* stop gcc complaints */ \ break; \ } \ } while (0) #define DISEMBLE_RGB(buf, bpp, fmt, Pixel, r, g, b) \ do { \ switch (bpp) { \ case 1: \ Pixel = *((Uint8 *)(buf)); \ RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \ break; \ \ case 2: \ Pixel = *((Uint16 *)(buf)); \ RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \ break; \ \ case 3: \ { \ Pixel = 0; \ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ r = *((buf) + fmt->Rshift / 8); \ g = *((buf) + fmt->Gshift / 8); \ b = *((buf) + fmt->Bshift / 8); \ } else { \ r = *((buf) + 2 - fmt->Rshift / 8); \ g = *((buf) + 2 - fmt->Gshift / 8); \ b = *((buf) + 2 - fmt->Bshift / 8); \ } \ } break; \ \ case 4: \ Pixel = *((Uint32 *)(buf)); \ RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \ break; \ \ default: \ /* stop gcc complaints */ \ Pixel = 0; \ r = g = b = 0; \ break; \ } \ } while (0) /* Assemble R-G-B values into a specified pixel format and store them */ #define PIXEL_FROM_RGB(Pixel, fmt, r, g, b) \ { \ Pixel = ((r >> fmt->Rloss) << fmt->Rshift) | \ ((g >> fmt->Gloss) << fmt->Gshift) | \ ((b >> fmt->Bloss) << fmt->Bshift) | \ fmt->Amask; \ } #define RGB565_FROM_RGB(Pixel, r, g, b) \ { \ Pixel = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3); \ } #define RGB555_FROM_RGB(Pixel, r, g, b) \ { \ Pixel = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3); \ } #define RGB888_FROM_RGB(Pixel, r, g, b) \ { \ Pixel = (r << 16) | (g << 8) | b; \ } #define ARGB8888_FROM_RGBA(Pixel, r, g, b, a) \ { \ Pixel = (a << 24) | (r << 16) | (g << 8) | b; \ } #define RGBA8888_FROM_RGBA(Pixel, r, g, b, a) \ { \ Pixel = (r << 24) | (g << 16) | (b << 8) | a; \ } #define ABGR8888_FROM_RGBA(Pixel, r, g, b, a) \ { \ Pixel = (a << 24) | (b << 16) | (g << 8) | r; \ } #define BGRA8888_FROM_RGBA(Pixel, r, g, b, a) \ { \ Pixel = (b << 24) | (g << 16) | (r << 8) | a; \ } #define ARGB2101010_FROM_RGBA(Pixel, r, g, b, a) \ { \ r = r ? ((r << 2) | 0x3) : 0; \ g = g ? ((g << 2) | 0x3) : 0; \ b = b ? ((b << 2) | 0x3) : 0; \ a = (a * 3) / 255; \ Pixel = (a << 30) | (r << 20) | (g << 10) | b; \ } #define ASSEMBLE_RGB(buf, bpp, fmt, r, g, b) \ { \ switch (bpp) { \ case 1: \ { \ Uint8 _pixel; \ \ PIXEL_FROM_RGB(_pixel, fmt, r, g, b); \ *((Uint8 *)(buf)) = _pixel; \ } break; \ \ case 2: \ { \ Uint16 _pixel; \ \ PIXEL_FROM_RGB(_pixel, fmt, r, g, b); \ *((Uint16 *)(buf)) = _pixel; \ } break; \ \ case 3: \ { \ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ *((buf) + fmt->Rshift / 8) = r; \ *((buf) + fmt->Gshift / 8) = g; \ *((buf) + fmt->Bshift / 8) = b; \ } else { \ *((buf) + 2 - fmt->Rshift / 8) = r; \ *((buf) + 2 - fmt->Gshift / 8) = g; \ *((buf) + 2 - fmt->Bshift / 8) = b; \ } \ } break; \ \ case 4: \ { \ Uint32 _pixel; \ \ PIXEL_FROM_RGB(_pixel, fmt, r, g, b); \ *((Uint32 *)(buf)) = _pixel; \ } break; \ } \ } /* FIXME: Should we rescale alpha into 0..255 here? */ #define RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a) \ { \ r = SDL_expand_byte[fmt->Rloss][((Pixel & fmt->Rmask) >> fmt->Rshift)]; \ g = SDL_expand_byte[fmt->Gloss][((Pixel & fmt->Gmask) >> fmt->Gshift)]; \ b = SDL_expand_byte[fmt->Bloss][((Pixel & fmt->Bmask) >> fmt->Bshift)]; \ a = SDL_expand_byte[fmt->Aloss][((Pixel & fmt->Amask) >> fmt->Ashift)]; \ } #define RGBA_FROM_8888(Pixel, fmt, r, g, b, a) \ { \ r = (Pixel & fmt->Rmask) >> fmt->Rshift; \ g = (Pixel & fmt->Gmask) >> fmt->Gshift; \ b = (Pixel & fmt->Bmask) >> fmt->Bshift; \ a = (Pixel & fmt->Amask) >> fmt->Ashift; \ } #define RGBA_FROM_RGBA8888(Pixel, r, g, b, a) \ { \ r = (Pixel >> 24); \ g = ((Pixel >> 16) & 0xFF); \ b = ((Pixel >> 8) & 0xFF); \ a = (Pixel & 0xFF); \ } #define RGBA_FROM_ARGB8888(Pixel, r, g, b, a) \ { \ r = ((Pixel >> 16) & 0xFF); \ g = ((Pixel >> 8) & 0xFF); \ b = (Pixel & 0xFF); \ a = (Pixel >> 24); \ } #define RGBA_FROM_ABGR8888(Pixel, r, g, b, a) \ { \ r = (Pixel & 0xFF); \ g = ((Pixel >> 8) & 0xFF); \ b = ((Pixel >> 16) & 0xFF); \ a = (Pixel >> 24); \ } #define RGBA_FROM_BGRA8888(Pixel, r, g, b, a) \ { \ r = ((Pixel >> 8) & 0xFF); \ g = ((Pixel >> 16) & 0xFF); \ b = (Pixel >> 24); \ a = (Pixel & 0xFF); \ } #define RGBA_FROM_ARGB2101010(Pixel, r, g, b, a) \ { \ r = ((Pixel >> 22) & 0xFF); \ g = ((Pixel >> 12) & 0xFF); \ b = ((Pixel >> 2) & 0xFF); \ a = SDL_expand_byte[6][(Pixel >> 30)]; \ } #define DISEMBLE_RGBA(buf, bpp, fmt, Pixel, r, g, b, a) \ do { \ switch (bpp) { \ case 1: \ Pixel = *((Uint8 *)(buf)); \ RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \ break; \ \ case 2: \ Pixel = *((Uint16 *)(buf)); \ RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \ break; \ \ case 3: \ { \ Pixel = 0; \ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ r = *((buf) + fmt->Rshift / 8); \ g = *((buf) + fmt->Gshift / 8); \ b = *((buf) + fmt->Bshift / 8); \ } else { \ r = *((buf) + 2 - fmt->Rshift / 8); \ g = *((buf) + 2 - fmt->Gshift / 8); \ b = *((buf) + 2 - fmt->Bshift / 8); \ } \ a = 0xFF; \ } break; \ \ case 4: \ Pixel = *((Uint32 *)(buf)); \ RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \ break; \ \ default: \ /* stop gcc complaints */ \ Pixel = 0; \ r = g = b = a = 0; \ break; \ } \ } while (0) /* FIXME: this isn't correct, especially for Alpha (maximum != 255) */ #define PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a) \ { \ Pixel = ((r >> fmt->Rloss) << fmt->Rshift) | \ ((g >> fmt->Gloss) << fmt->Gshift) | \ ((b >> fmt->Bloss) << fmt->Bshift) | \ ((a >> fmt->Aloss) << fmt->Ashift); \ } #define ASSEMBLE_RGBA(buf, bpp, fmt, r, g, b, a) \ { \ switch (bpp) { \ case 1: \ { \ Uint8 _pixel; \ \ PIXEL_FROM_RGBA(_pixel, fmt, r, g, b, a); \ *((Uint8 *)(buf)) = _pixel; \ } break; \ \ case 2: \ { \ Uint16 _pixel; \ \ PIXEL_FROM_RGBA(_pixel, fmt, r, g, b, a); \ *((Uint16 *)(buf)) = _pixel; \ } break; \ \ case 3: \ { \ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ *((buf) + fmt->Rshift / 8) = r; \ *((buf) + fmt->Gshift / 8) = g; \ *((buf) + fmt->Bshift / 8) = b; \ } else { \ *((buf) + 2 - fmt->Rshift / 8) = r; \ *((buf) + 2 - fmt->Gshift / 8) = g; \ *((buf) + 2 - fmt->Bshift / 8) = b; \ } \ } break; \ \ case 4: \ { \ Uint32 _pixel; \ \ PIXEL_FROM_RGBA(_pixel, fmt, r, g, b, a); \ *((Uint32 *)(buf)) = _pixel; \ } break; \ } \ } /* Blend the RGB values of two pixels with an alpha value */ #define ALPHA_BLEND_RGB(sR, sG, sB, A, dR, dG, dB) \ do { \ dR = (Uint8)((((int)(sR - dR) * (int)A) / 255) + dR); \ dG = (Uint8)((((int)(sG - dG) * (int)A) / 255) + dG); \ dB = (Uint8)((((int)(sB - dB) * (int)A) / 255) + dB); \ } while (0) /* Blend the RGBA values of two pixels */ #define ALPHA_BLEND_RGBA(sR, sG, sB, sA, dR, dG, dB, dA) \ do { \ dR = (Uint8)((((int)(sR - dR) * (int)sA) / 255) + dR); \ dG = (Uint8)((((int)(sG - dG) * (int)sA) / 255) + dG); \ dB = (Uint8)((((int)(sB - dB) * (int)sA) / 255) + dB); \ dA = (Uint8)((int)sA + dA - ((int)sA * dA) / 255); \ } while (0) /* This is a very useful loop for optimizing blitters */ #if defined(_MSC_VER) && (_MSC_VER == 1300) /* There's a bug in the Visual C++ 7 optimizer when compiling this code */ #else #define USE_DUFFS_LOOP #endif #ifdef USE_DUFFS_LOOP /* 8-times unrolled loop */ #define DUFFS_LOOP8(pixel_copy_increment, width) \ { \ int n = (width + 7) / 8; \ switch (width & 7) { \ case 0: \ do { \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 7: \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 6: \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 5: \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 4: \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 3: \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 2: \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 1: \ pixel_copy_increment; \ } while (--n > 0); \ } \ } /* 4-times unrolled loop */ #define DUFFS_LOOP4(pixel_copy_increment, width) \ { \ int n = (width + 3) / 4; \ switch (width & 3) { \ case 0: \ do { \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 3: \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 2: \ pixel_copy_increment; \ SDL_FALLTHROUGH; \ case 1: \ pixel_copy_increment; \ } while (--n > 0); \ } \ } /* Use the 8-times version of the loop by default */ #define DUFFS_LOOP(pixel_copy_increment, width) \ DUFFS_LOOP8(pixel_copy_increment, width) /* Special version of Duff's device for even more optimization */ #define DUFFS_LOOP_124(pixel_copy_increment1, \ pixel_copy_increment2, \ pixel_copy_increment4, width) \ { \ int n = width; \ if (n & 1) { \ pixel_copy_increment1; \ n -= 1; \ } \ if (n & 2) { \ pixel_copy_increment2; \ n -= 2; \ } \ if (n & 4) { \ pixel_copy_increment4; \ n -= 4; \ } \ if (n) { \ n /= 8; \ do { \ pixel_copy_increment4; \ pixel_copy_increment4; \ } while (--n > 0); \ } \ } #else /* Don't use Duff's device to unroll loops */ #define DUFFS_LOOP(pixel_copy_increment, width) \ { \ int n; \ for (n = width; n > 0; --n) { \ pixel_copy_increment; \ } \ } #define DUFFS_LOOP8(pixel_copy_increment, width) \ DUFFS_LOOP(pixel_copy_increment, width) #define DUFFS_LOOP4(pixel_copy_increment, width) \ DUFFS_LOOP(pixel_copy_increment, width) #define DUFFS_LOOP_124(pixel_copy_increment1, \ pixel_copy_increment2, \ pixel_copy_increment4, width) \ DUFFS_LOOP(pixel_copy_increment1, width) #endif /* USE_DUFFS_LOOP */ /* Prevent Visual C++ 6.0 from printing out stupid warnings */ #if defined(_MSC_VER) && (_MSC_VER >= 600) #pragma warning(disable : 4550) #endif #endif /* SDL_blit_h_ */ /* vi: set ts=4 sw=4 expandtab: */