1 /* 2 * Mesa 3-D graphics library 3 * Version: 7.7 4 * 5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. 6 * Copyright (c) 2009 VMware, Inc. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the "Software"), 10 * to deal in the Software without restriction, including without limitation 11 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 12 * and/or sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included 16 * in all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 26 27 /** 28 * \file s_texfetch.c 29 * 30 * Texel fetch/store functions 31 * 32 * \author Gareth Hughes 33 */ 34 35 36 #include "main/colormac.h" 37 #include "main/macros.h" 38 #include "main/texcompress.h" 39 #include "main/texcompress_fxt1.h" 40 #include "main/texcompress_s3tc.h" 41 #include "main/texcompress_rgtc.h" 42 #include "main/texcompress_etc.h" 43 #include "main/teximage.h" 44 #include "main/samplerobj.h" 45 #include "s_context.h" 46 #include "s_texfetch.h" 47 #include "../../gallium/auxiliary/util/u_format_rgb9e5.h" 48 #include "../../gallium/auxiliary/util/u_format_r11g11b10f.h" 49 50 51 /** 52 * Convert an 8-bit sRGB value from non-linear space to a 53 * linear RGB value in [0, 1]. 54 * Implemented with a 256-entry lookup table. 55 */ 56 static inline GLfloat 57 nonlinear_to_linear(GLubyte cs8) 58 { 59 static GLfloat table[256]; 60 static GLboolean tableReady = GL_FALSE; 61 if (!tableReady) { 62 /* compute lookup table now */ 63 GLuint i; 64 for (i = 0; i < 256; i++) { 65 const GLfloat cs = UBYTE_TO_FLOAT(i); 66 if (cs <= 0.04045) { 67 table[i] = cs / 12.92f; 68 } 69 else { 70 table[i] = (GLfloat) pow((cs + 0.055) / 1.055, 2.4); 71 } 72 } 73 tableReady = GL_TRUE; 74 } 75 return table[cs8]; 76 } 77 78 79 80 /* Texel fetch routines for all supported formats 81 */ 82 #define DIM 1 83 #include "s_texfetch_tmp.h" 84 85 #define DIM 2 86 #include "s_texfetch_tmp.h" 87 88 #define DIM 3 89 #include "s_texfetch_tmp.h" 90 91 /** 92 * Null texel fetch function. 93 * 94 * Have to have this so the FetchTexel function pointer is never NULL. 95 */ 96 static void fetch_null_texelf( const struct swrast_texture_image *texImage, 97 GLint i, GLint j, GLint k, GLfloat *texel ) 98 { 99 (void) texImage; (void) i; (void) j; (void) k; 100 texel[RCOMP] = 0.0; 101 texel[GCOMP] = 0.0; 102 texel[BCOMP] = 0.0; 103 texel[ACOMP] = 0.0; 104 _mesa_warning(NULL, "fetch_null_texelf() called!"); 105 } 106 107 108 /** 109 * Table to map MESA_FORMAT_ to texel fetch/store funcs. 110 * XXX this is somewhat temporary. 111 */ 112 static struct { 113 gl_format Name; 114 FetchTexelFunc Fetch1D; 115 FetchTexelFunc Fetch2D; 116 FetchTexelFunc Fetch3D; 117 } 118 texfetch_funcs[MESA_FORMAT_COUNT] = 119 { 120 { 121 MESA_FORMAT_NONE, 122 fetch_null_texelf, 123 fetch_null_texelf, 124 fetch_null_texelf 125 }, 126 127 { 128 MESA_FORMAT_RGBA8888, 129 fetch_texel_1d_f_rgba8888, 130 fetch_texel_2d_f_rgba8888, 131 fetch_texel_3d_f_rgba8888 132 }, 133 { 134 MESA_FORMAT_RGBA8888_REV, 135 fetch_texel_1d_f_rgba8888_rev, 136 fetch_texel_2d_f_rgba8888_rev, 137 fetch_texel_3d_f_rgba8888_rev 138 }, 139 { 140 MESA_FORMAT_ARGB8888, 141 fetch_texel_1d_f_argb8888, 142 fetch_texel_2d_f_argb8888, 143 fetch_texel_3d_f_argb8888 144 }, 145 { 146 MESA_FORMAT_ARGB8888_REV, 147 fetch_texel_1d_f_argb8888_rev, 148 fetch_texel_2d_f_argb8888_rev, 149 fetch_texel_3d_f_argb8888_rev 150 }, 151 { 152 MESA_FORMAT_RGBX8888, 153 fetch_texel_1d_f_rgbx8888, 154 fetch_texel_2d_f_rgbx8888, 155 fetch_texel_3d_f_rgbx8888 156 }, 157 { 158 MESA_FORMAT_RGBX8888_REV, 159 fetch_texel_1d_f_rgbx8888_rev, 160 fetch_texel_2d_f_rgbx8888_rev, 161 fetch_texel_3d_f_rgbx8888_rev 162 }, 163 { 164 MESA_FORMAT_XRGB8888, 165 fetch_texel_1d_f_xrgb8888, 166 fetch_texel_2d_f_xrgb8888, 167 fetch_texel_3d_f_xrgb8888 168 }, 169 { 170 MESA_FORMAT_XRGB8888_REV, 171 fetch_texel_1d_f_xrgb8888_rev, 172 fetch_texel_2d_f_xrgb8888_rev, 173 fetch_texel_3d_f_xrgb8888_rev 174 }, 175 { 176 MESA_FORMAT_RGB888, 177 fetch_texel_1d_f_rgb888, 178 fetch_texel_2d_f_rgb888, 179 fetch_texel_3d_f_rgb888 180 }, 181 { 182 MESA_FORMAT_BGR888, 183 fetch_texel_1d_f_bgr888, 184 fetch_texel_2d_f_bgr888, 185 fetch_texel_3d_f_bgr888 186 }, 187 { 188 MESA_FORMAT_RGB565, 189 fetch_texel_1d_f_rgb565, 190 fetch_texel_2d_f_rgb565, 191 fetch_texel_3d_f_rgb565 192 }, 193 { 194 MESA_FORMAT_RGB565_REV, 195 fetch_texel_1d_f_rgb565_rev, 196 fetch_texel_2d_f_rgb565_rev, 197 fetch_texel_3d_f_rgb565_rev 198 }, 199 { 200 MESA_FORMAT_ARGB4444, 201 fetch_texel_1d_f_argb4444, 202 fetch_texel_2d_f_argb4444, 203 fetch_texel_3d_f_argb4444 204 }, 205 { 206 MESA_FORMAT_ARGB4444_REV, 207 fetch_texel_1d_f_argb4444_rev, 208 fetch_texel_2d_f_argb4444_rev, 209 fetch_texel_3d_f_argb4444_rev 210 }, 211 { 212 MESA_FORMAT_RGBA5551, 213 fetch_texel_1d_f_rgba5551, 214 fetch_texel_2d_f_rgba5551, 215 fetch_texel_3d_f_rgba5551 216 }, 217 { 218 MESA_FORMAT_ARGB1555, 219 fetch_texel_1d_f_argb1555, 220 fetch_texel_2d_f_argb1555, 221 fetch_texel_3d_f_argb1555 222 }, 223 { 224 MESA_FORMAT_ARGB1555_REV, 225 fetch_texel_1d_f_argb1555_rev, 226 fetch_texel_2d_f_argb1555_rev, 227 fetch_texel_3d_f_argb1555_rev 228 }, 229 { 230 MESA_FORMAT_AL44, 231 fetch_texel_1d_f_al44, 232 fetch_texel_2d_f_al44, 233 fetch_texel_3d_f_al44 234 }, 235 { 236 MESA_FORMAT_AL88, 237 fetch_texel_1d_f_al88, 238 fetch_texel_2d_f_al88, 239 fetch_texel_3d_f_al88 240 }, 241 { 242 MESA_FORMAT_AL88_REV, 243 fetch_texel_1d_f_al88_rev, 244 fetch_texel_2d_f_al88_rev, 245 fetch_texel_3d_f_al88_rev 246 }, 247 { 248 MESA_FORMAT_AL1616, 249 fetch_texel_1d_f_al1616, 250 fetch_texel_2d_f_al1616, 251 fetch_texel_3d_f_al1616 252 }, 253 { 254 MESA_FORMAT_AL1616_REV, 255 fetch_texel_1d_f_al1616_rev, 256 fetch_texel_2d_f_al1616_rev, 257 fetch_texel_3d_f_al1616_rev 258 }, 259 { 260 MESA_FORMAT_RGB332, 261 fetch_texel_1d_f_rgb332, 262 fetch_texel_2d_f_rgb332, 263 fetch_texel_3d_f_rgb332 264 }, 265 { 266 MESA_FORMAT_A8, 267 fetch_texel_1d_f_a8, 268 fetch_texel_2d_f_a8, 269 fetch_texel_3d_f_a8 270 }, 271 { 272 MESA_FORMAT_A16, 273 fetch_texel_1d_f_a16, 274 fetch_texel_2d_f_a16, 275 fetch_texel_3d_f_a16 276 }, 277 { 278 MESA_FORMAT_L8, 279 fetch_texel_1d_f_l8, 280 fetch_texel_2d_f_l8, 281 fetch_texel_3d_f_l8 282 }, 283 { 284 MESA_FORMAT_L16, 285 fetch_texel_1d_f_l16, 286 fetch_texel_2d_f_l16, 287 fetch_texel_3d_f_l16 288 }, 289 { 290 MESA_FORMAT_I8, 291 fetch_texel_1d_f_i8, 292 fetch_texel_2d_f_i8, 293 fetch_texel_3d_f_i8 294 }, 295 { 296 MESA_FORMAT_I16, 297 fetch_texel_1d_f_i16, 298 fetch_texel_2d_f_i16, 299 fetch_texel_3d_f_i16 300 }, 301 { 302 MESA_FORMAT_YCBCR, 303 fetch_texel_1d_f_ycbcr, 304 fetch_texel_2d_f_ycbcr, 305 fetch_texel_3d_f_ycbcr 306 }, 307 { 308 MESA_FORMAT_YCBCR_REV, 309 fetch_texel_1d_f_ycbcr_rev, 310 fetch_texel_2d_f_ycbcr_rev, 311 fetch_texel_3d_f_ycbcr_rev 312 }, 313 { 314 MESA_FORMAT_R8, 315 fetch_texel_1d_f_r8, 316 fetch_texel_2d_f_r8, 317 fetch_texel_3d_f_r8 318 }, 319 { 320 MESA_FORMAT_GR88, 321 fetch_texel_1d_f_gr88, 322 fetch_texel_2d_f_gr88, 323 fetch_texel_3d_f_gr88 324 }, 325 { 326 MESA_FORMAT_RG88, 327 fetch_texel_1d_f_rg88, 328 fetch_texel_2d_f_rg88, 329 fetch_texel_3d_f_rg88 330 }, 331 { 332 MESA_FORMAT_R16, 333 fetch_texel_1d_f_r16, 334 fetch_texel_2d_f_r16, 335 fetch_texel_3d_f_r16 336 }, 337 { 338 MESA_FORMAT_RG1616, 339 fetch_texel_1d_f_rg1616, 340 fetch_texel_2d_f_rg1616, 341 fetch_texel_3d_f_rg1616 342 }, 343 { 344 MESA_FORMAT_RG1616_REV, 345 fetch_texel_1d_f_rg1616_rev, 346 fetch_texel_2d_f_rg1616_rev, 347 fetch_texel_3d_f_rg1616_rev 348 }, 349 { 350 MESA_FORMAT_ARGB2101010, 351 fetch_texel_1d_f_argb2101010, 352 fetch_texel_2d_f_argb2101010, 353 fetch_texel_3d_f_argb2101010 354 }, 355 { 356 MESA_FORMAT_Z24_S8, 357 fetch_texel_1d_f_z24_s8, 358 fetch_texel_2d_f_z24_s8, 359 fetch_texel_3d_f_z24_s8 360 }, 361 { 362 MESA_FORMAT_S8_Z24, 363 fetch_texel_1d_f_s8_z24, 364 fetch_texel_2d_f_s8_z24, 365 fetch_texel_3d_f_s8_z24 366 }, 367 { 368 MESA_FORMAT_Z16, 369 fetch_texel_1d_f_z16, 370 fetch_texel_2d_f_z16, 371 fetch_texel_3d_f_z16 372 }, 373 { 374 MESA_FORMAT_X8_Z24, 375 fetch_texel_1d_f_s8_z24, 376 fetch_texel_2d_f_s8_z24, 377 fetch_texel_3d_f_s8_z24 378 }, 379 { 380 MESA_FORMAT_Z24_X8, 381 fetch_texel_1d_f_z24_s8, 382 fetch_texel_2d_f_z24_s8, 383 fetch_texel_3d_f_z24_s8 384 }, 385 { 386 MESA_FORMAT_Z32, 387 fetch_texel_1d_f_z32, 388 fetch_texel_2d_f_z32, 389 fetch_texel_3d_f_z32 390 }, 391 { 392 MESA_FORMAT_S8, 393 NULL, 394 NULL, 395 NULL 396 }, 397 { 398 MESA_FORMAT_SRGB8, 399 fetch_texel_1d_srgb8, 400 fetch_texel_2d_srgb8, 401 fetch_texel_3d_srgb8 402 }, 403 { 404 MESA_FORMAT_SRGBA8, 405 fetch_texel_1d_srgba8, 406 fetch_texel_2d_srgba8, 407 fetch_texel_3d_srgba8 408 }, 409 { 410 MESA_FORMAT_SARGB8, 411 fetch_texel_1d_sargb8, 412 fetch_texel_2d_sargb8, 413 fetch_texel_3d_sargb8 414 }, 415 { 416 MESA_FORMAT_SL8, 417 fetch_texel_1d_sl8, 418 fetch_texel_2d_sl8, 419 fetch_texel_3d_sl8 420 }, 421 { 422 MESA_FORMAT_SLA8, 423 fetch_texel_1d_sla8, 424 fetch_texel_2d_sla8, 425 fetch_texel_3d_sla8 426 }, 427 { 428 MESA_FORMAT_SRGB_DXT1, 429 _mesa_fetch_texel_srgb_dxt1, 430 _mesa_fetch_texel_srgb_dxt1, 431 _mesa_fetch_texel_srgb_dxt1 432 }, 433 { 434 MESA_FORMAT_SRGBA_DXT1, 435 _mesa_fetch_texel_srgba_dxt1, 436 _mesa_fetch_texel_srgba_dxt1, 437 _mesa_fetch_texel_srgba_dxt1 438 }, 439 { 440 MESA_FORMAT_SRGBA_DXT3, 441 _mesa_fetch_texel_srgba_dxt3, 442 _mesa_fetch_texel_srgba_dxt3, 443 _mesa_fetch_texel_srgba_dxt3 444 }, 445 { 446 MESA_FORMAT_SRGBA_DXT5, 447 _mesa_fetch_texel_srgba_dxt5, 448 _mesa_fetch_texel_srgba_dxt5, 449 _mesa_fetch_texel_srgba_dxt5 450 }, 451 452 { 453 MESA_FORMAT_RGB_FXT1, 454 NULL, 455 _mesa_fetch_texel_2d_f_rgb_fxt1, 456 NULL 457 }, 458 { 459 MESA_FORMAT_RGBA_FXT1, 460 NULL, 461 _mesa_fetch_texel_2d_f_rgba_fxt1, 462 NULL 463 }, 464 { 465 MESA_FORMAT_RGB_DXT1, 466 _mesa_fetch_texel_rgb_dxt1, 467 _mesa_fetch_texel_rgb_dxt1, 468 _mesa_fetch_texel_rgb_dxt1 469 }, 470 { 471 MESA_FORMAT_RGBA_DXT1, 472 _mesa_fetch_texel_rgba_dxt1, 473 _mesa_fetch_texel_rgba_dxt1, 474 _mesa_fetch_texel_rgba_dxt1 475 }, 476 { 477 MESA_FORMAT_RGBA_DXT3, 478 _mesa_fetch_texel_rgba_dxt3, 479 _mesa_fetch_texel_rgba_dxt3, 480 _mesa_fetch_texel_rgba_dxt3 481 }, 482 { 483 MESA_FORMAT_RGBA_DXT5, 484 _mesa_fetch_texel_rgba_dxt5, 485 _mesa_fetch_texel_rgba_dxt5, 486 _mesa_fetch_texel_rgba_dxt5 487 }, 488 { 489 MESA_FORMAT_RGBA_FLOAT32, 490 fetch_texel_1d_f_rgba_f32, 491 fetch_texel_2d_f_rgba_f32, 492 fetch_texel_3d_f_rgba_f32 493 }, 494 { 495 MESA_FORMAT_RGBA_FLOAT16, 496 fetch_texel_1d_f_rgba_f16, 497 fetch_texel_2d_f_rgba_f16, 498 fetch_texel_3d_f_rgba_f16 499 }, 500 { 501 MESA_FORMAT_RGB_FLOAT32, 502 fetch_texel_1d_f_rgb_f32, 503 fetch_texel_2d_f_rgb_f32, 504 fetch_texel_3d_f_rgb_f32 505 }, 506 { 507 MESA_FORMAT_RGB_FLOAT16, 508 fetch_texel_1d_f_rgb_f16, 509 fetch_texel_2d_f_rgb_f16, 510 fetch_texel_3d_f_rgb_f16 511 }, 512 { 513 MESA_FORMAT_ALPHA_FLOAT32, 514 fetch_texel_1d_f_alpha_f32, 515 fetch_texel_2d_f_alpha_f32, 516 fetch_texel_3d_f_alpha_f32 517 }, 518 { 519 MESA_FORMAT_ALPHA_FLOAT16, 520 fetch_texel_1d_f_alpha_f16, 521 fetch_texel_2d_f_alpha_f16, 522 fetch_texel_3d_f_alpha_f16 523 }, 524 { 525 MESA_FORMAT_LUMINANCE_FLOAT32, 526 fetch_texel_1d_f_luminance_f32, 527 fetch_texel_2d_f_luminance_f32, 528 fetch_texel_3d_f_luminance_f32 529 }, 530 { 531 MESA_FORMAT_LUMINANCE_FLOAT16, 532 fetch_texel_1d_f_luminance_f16, 533 fetch_texel_2d_f_luminance_f16, 534 fetch_texel_3d_f_luminance_f16 535 }, 536 { 537 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32, 538 fetch_texel_1d_f_luminance_alpha_f32, 539 fetch_texel_2d_f_luminance_alpha_f32, 540 fetch_texel_3d_f_luminance_alpha_f32 541 }, 542 { 543 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, 544 fetch_texel_1d_f_luminance_alpha_f16, 545 fetch_texel_2d_f_luminance_alpha_f16, 546 fetch_texel_3d_f_luminance_alpha_f16 547 }, 548 { 549 MESA_FORMAT_INTENSITY_FLOAT32, 550 fetch_texel_1d_f_intensity_f32, 551 fetch_texel_2d_f_intensity_f32, 552 fetch_texel_3d_f_intensity_f32 553 }, 554 { 555 MESA_FORMAT_INTENSITY_FLOAT16, 556 fetch_texel_1d_f_intensity_f16, 557 fetch_texel_2d_f_intensity_f16, 558 fetch_texel_3d_f_intensity_f16 559 }, 560 { 561 MESA_FORMAT_R_FLOAT32, 562 fetch_texel_1d_f_r_f32, 563 fetch_texel_2d_f_r_f32, 564 fetch_texel_3d_f_r_f32 565 }, 566 { 567 MESA_FORMAT_R_FLOAT16, 568 fetch_texel_1d_f_r_f16, 569 fetch_texel_2d_f_r_f16, 570 fetch_texel_3d_f_r_f16 571 }, 572 { 573 MESA_FORMAT_RG_FLOAT32, 574 fetch_texel_1d_f_rg_f32, 575 fetch_texel_2d_f_rg_f32, 576 fetch_texel_3d_f_rg_f32 577 }, 578 { 579 MESA_FORMAT_RG_FLOAT16, 580 fetch_texel_1d_f_rg_f16, 581 fetch_texel_2d_f_rg_f16, 582 fetch_texel_3d_f_rg_f16 583 }, 584 585 { 586 MESA_FORMAT_ALPHA_UINT8, 587 NULL, 588 NULL, 589 NULL 590 }, 591 592 { 593 MESA_FORMAT_ALPHA_UINT16, 594 NULL, 595 NULL, 596 NULL 597 }, 598 599 { 600 MESA_FORMAT_ALPHA_UINT32, 601 NULL, 602 NULL, 603 NULL 604 }, 605 606 { 607 MESA_FORMAT_ALPHA_INT8, 608 NULL, 609 NULL, 610 NULL 611 }, 612 613 { 614 MESA_FORMAT_ALPHA_INT16, 615 NULL, 616 NULL, 617 NULL 618 }, 619 620 { 621 MESA_FORMAT_ALPHA_INT32, 622 NULL, 623 NULL, 624 NULL 625 }, 626 627 628 { 629 MESA_FORMAT_INTENSITY_UINT8, 630 NULL, 631 NULL, 632 NULL 633 }, 634 635 { 636 MESA_FORMAT_INTENSITY_UINT16, 637 NULL, 638 NULL, 639 NULL 640 }, 641 642 { 643 MESA_FORMAT_INTENSITY_UINT32, 644 NULL, 645 NULL, 646 NULL 647 }, 648 649 { 650 MESA_FORMAT_INTENSITY_INT8, 651 NULL, 652 NULL, 653 NULL 654 }, 655 656 { 657 MESA_FORMAT_INTENSITY_INT16, 658 NULL, 659 NULL, 660 NULL 661 }, 662 663 { 664 MESA_FORMAT_INTENSITY_INT32, 665 NULL, 666 NULL, 667 NULL 668 }, 669 670 671 { 672 MESA_FORMAT_LUMINANCE_UINT8, 673 NULL, 674 NULL, 675 NULL 676 }, 677 678 { 679 MESA_FORMAT_LUMINANCE_UINT16, 680 NULL, 681 NULL, 682 NULL 683 }, 684 685 { 686 MESA_FORMAT_LUMINANCE_UINT32, 687 NULL, 688 NULL, 689 NULL 690 }, 691 692 { 693 MESA_FORMAT_LUMINANCE_INT8, 694 NULL, 695 NULL, 696 NULL 697 }, 698 699 { 700 MESA_FORMAT_LUMINANCE_INT16, 701 NULL, 702 NULL, 703 NULL 704 }, 705 706 { 707 MESA_FORMAT_LUMINANCE_INT32, 708 NULL, 709 NULL, 710 NULL 711 }, 712 713 714 { 715 MESA_FORMAT_LUMINANCE_ALPHA_UINT8, 716 NULL, 717 NULL, 718 NULL 719 }, 720 721 { 722 MESA_FORMAT_LUMINANCE_ALPHA_UINT16, 723 NULL, 724 NULL, 725 NULL 726 }, 727 728 { 729 MESA_FORMAT_LUMINANCE_ALPHA_UINT32, 730 NULL, 731 NULL, 732 NULL 733 }, 734 735 { 736 MESA_FORMAT_LUMINANCE_ALPHA_INT8, 737 NULL, 738 NULL, 739 NULL 740 }, 741 742 { 743 MESA_FORMAT_LUMINANCE_ALPHA_INT16, 744 NULL, 745 NULL, 746 NULL 747 }, 748 749 { 750 MESA_FORMAT_LUMINANCE_ALPHA_INT32, 751 NULL, 752 NULL, 753 NULL 754 }, 755 756 757 { 758 MESA_FORMAT_R_INT8, 759 NULL, 760 NULL, 761 NULL 762 }, 763 764 { 765 MESA_FORMAT_RG_INT8, 766 NULL, 767 NULL, 768 NULL 769 }, 770 771 { 772 MESA_FORMAT_RGB_INT8, 773 NULL, 774 NULL, 775 NULL 776 }, 777 778 /* non-normalized, signed int */ 779 { 780 MESA_FORMAT_RGBA_INT8, 781 fetch_texel_1d_rgba_int8, 782 fetch_texel_2d_rgba_int8, 783 fetch_texel_3d_rgba_int8 784 }, 785 { 786 MESA_FORMAT_R_INT16, 787 NULL, 788 NULL, 789 NULL 790 }, 791 { 792 MESA_FORMAT_RG_INT16, 793 NULL, 794 NULL, 795 NULL 796 }, 797 { 798 MESA_FORMAT_RGB_INT16, 799 NULL, 800 NULL, 801 NULL 802 }, 803 { 804 MESA_FORMAT_RGBA_INT16, 805 fetch_texel_1d_rgba_int16, 806 fetch_texel_2d_rgba_int16, 807 fetch_texel_3d_rgba_int16 808 }, 809 { 810 MESA_FORMAT_R_INT32, 811 NULL, 812 NULL, 813 NULL 814 }, 815 { 816 MESA_FORMAT_RG_INT32, 817 NULL, 818 NULL, 819 NULL 820 }, 821 { 822 MESA_FORMAT_RGB_INT32, 823 NULL, 824 NULL, 825 NULL 826 }, 827 { 828 MESA_FORMAT_RGBA_INT32, 829 fetch_texel_1d_rgba_int32, 830 fetch_texel_2d_rgba_int32, 831 fetch_texel_3d_rgba_int32 832 }, 833 834 /* non-normalized, unsigned int */ 835 { 836 MESA_FORMAT_R_UINT8, 837 NULL, 838 NULL, 839 NULL 840 }, 841 { 842 MESA_FORMAT_RG_UINT8, 843 NULL, 844 NULL, 845 NULL 846 }, 847 { 848 MESA_FORMAT_RGB_UINT8, 849 NULL, 850 NULL, 851 NULL 852 }, 853 { 854 MESA_FORMAT_RGBA_UINT8, 855 fetch_texel_1d_rgba_uint8, 856 fetch_texel_2d_rgba_uint8, 857 fetch_texel_3d_rgba_uint8 858 }, 859 { 860 MESA_FORMAT_R_UINT16, 861 NULL, 862 NULL, 863 NULL 864 }, 865 { 866 MESA_FORMAT_RG_UINT16, 867 NULL, 868 NULL, 869 NULL 870 }, 871 { 872 MESA_FORMAT_RGB_UINT16, 873 NULL, 874 NULL, 875 NULL 876 }, 877 { 878 MESA_FORMAT_RGBA_UINT16, 879 fetch_texel_1d_rgba_uint16, 880 fetch_texel_2d_rgba_uint16, 881 fetch_texel_3d_rgba_uint16 882 }, 883 { 884 MESA_FORMAT_R_UINT32, 885 NULL, 886 NULL, 887 NULL 888 }, 889 { 890 MESA_FORMAT_RG_UINT32, 891 NULL, 892 NULL, 893 NULL 894 }, 895 { 896 MESA_FORMAT_RGB_UINT32, 897 NULL, 898 NULL, 899 NULL 900 }, 901 { 902 MESA_FORMAT_RGBA_UINT32, 903 fetch_texel_1d_rgba_uint32, 904 fetch_texel_2d_rgba_uint32, 905 fetch_texel_3d_rgba_uint32 906 }, 907 908 /* dudv */ 909 { 910 MESA_FORMAT_DUDV8, 911 fetch_texel_1d_dudv8, 912 fetch_texel_2d_dudv8, 913 fetch_texel_3d_dudv8 914 }, 915 916 /* signed, normalized */ 917 { 918 MESA_FORMAT_SIGNED_R8, 919 fetch_texel_1d_signed_r8, 920 fetch_texel_2d_signed_r8, 921 fetch_texel_3d_signed_r8 922 }, 923 { 924 MESA_FORMAT_SIGNED_RG88_REV, 925 fetch_texel_1d_signed_rg88_rev, 926 fetch_texel_2d_signed_rg88_rev, 927 fetch_texel_3d_signed_rg88_rev 928 }, 929 { 930 MESA_FORMAT_SIGNED_RGBX8888, 931 fetch_texel_1d_signed_rgbx8888, 932 fetch_texel_2d_signed_rgbx8888, 933 fetch_texel_3d_signed_rgbx8888 934 }, 935 { 936 MESA_FORMAT_SIGNED_RGBA8888, 937 fetch_texel_1d_signed_rgba8888, 938 fetch_texel_2d_signed_rgba8888, 939 fetch_texel_3d_signed_rgba8888 940 }, 941 { 942 MESA_FORMAT_SIGNED_RGBA8888_REV, 943 fetch_texel_1d_signed_rgba8888_rev, 944 fetch_texel_2d_signed_rgba8888_rev, 945 fetch_texel_3d_signed_rgba8888_rev 946 }, 947 { 948 MESA_FORMAT_SIGNED_R16, 949 fetch_texel_1d_signed_r16, 950 fetch_texel_2d_signed_r16, 951 fetch_texel_3d_signed_r16 952 }, 953 { 954 MESA_FORMAT_SIGNED_GR1616, 955 fetch_texel_1d_signed_rg1616, 956 fetch_texel_2d_signed_rg1616, 957 fetch_texel_3d_signed_rg1616 958 }, 959 { 960 MESA_FORMAT_SIGNED_RGB_16, 961 fetch_texel_1d_signed_rgb_16, 962 fetch_texel_2d_signed_rgb_16, 963 fetch_texel_3d_signed_rgb_16 964 }, 965 { 966 MESA_FORMAT_SIGNED_RGBA_16, 967 fetch_texel_1d_signed_rgba_16, 968 fetch_texel_2d_signed_rgba_16, 969 fetch_texel_3d_signed_rgba_16 970 }, 971 { 972 MESA_FORMAT_RGBA_16, 973 fetch_texel_1d_rgba_16, 974 fetch_texel_2d_rgba_16, 975 fetch_texel_3d_rgba_16 976 }, 977 { 978 MESA_FORMAT_RED_RGTC1, 979 _mesa_fetch_texel_red_rgtc1, 980 _mesa_fetch_texel_red_rgtc1, 981 _mesa_fetch_texel_red_rgtc1 982 }, 983 { 984 MESA_FORMAT_SIGNED_RED_RGTC1, 985 _mesa_fetch_texel_signed_red_rgtc1, 986 _mesa_fetch_texel_signed_red_rgtc1, 987 _mesa_fetch_texel_signed_red_rgtc1 988 }, 989 { 990 MESA_FORMAT_RG_RGTC2, 991 _mesa_fetch_texel_rg_rgtc2, 992 _mesa_fetch_texel_rg_rgtc2, 993 _mesa_fetch_texel_rg_rgtc2 994 }, 995 { 996 MESA_FORMAT_SIGNED_RG_RGTC2, 997 _mesa_fetch_texel_signed_rg_rgtc2, 998 _mesa_fetch_texel_signed_rg_rgtc2, 999 _mesa_fetch_texel_signed_rg_rgtc2 1000 }, 1001 { 1002 MESA_FORMAT_L_LATC1, 1003 _mesa_fetch_texel_l_latc1, 1004 _mesa_fetch_texel_l_latc1, 1005 _mesa_fetch_texel_l_latc1 1006 }, 1007 { 1008 MESA_FORMAT_SIGNED_L_LATC1, 1009 _mesa_fetch_texel_signed_l_latc1, 1010 _mesa_fetch_texel_signed_l_latc1, 1011 _mesa_fetch_texel_signed_l_latc1 1012 }, 1013 { 1014 MESA_FORMAT_LA_LATC2, 1015 _mesa_fetch_texel_la_latc2, 1016 _mesa_fetch_texel_la_latc2, 1017 _mesa_fetch_texel_la_latc2 1018 }, 1019 { 1020 MESA_FORMAT_SIGNED_LA_LATC2, 1021 _mesa_fetch_texel_signed_la_latc2, 1022 _mesa_fetch_texel_signed_la_latc2, 1023 _mesa_fetch_texel_signed_la_latc2 1024 }, 1025 { 1026 MESA_FORMAT_ETC1_RGB8, 1027 NULL, 1028 _mesa_fetch_texel_2d_f_etc1_rgb8, 1029 NULL 1030 }, 1031 { 1032 MESA_FORMAT_SIGNED_A8, 1033 fetch_texel_1d_signed_a8, 1034 fetch_texel_2d_signed_a8, 1035 fetch_texel_3d_signed_a8 1036 }, 1037 { 1038 MESA_FORMAT_SIGNED_L8, 1039 fetch_texel_1d_signed_l8, 1040 fetch_texel_2d_signed_l8, 1041 fetch_texel_3d_signed_l8 1042 }, 1043 { 1044 MESA_FORMAT_SIGNED_AL88, 1045 fetch_texel_1d_signed_al88, 1046 fetch_texel_2d_signed_al88, 1047 fetch_texel_3d_signed_al88 1048 }, 1049 { 1050 MESA_FORMAT_SIGNED_I8, 1051 fetch_texel_1d_signed_i8, 1052 fetch_texel_2d_signed_i8, 1053 fetch_texel_3d_signed_i8 1054 }, 1055 { 1056 MESA_FORMAT_SIGNED_A16, 1057 fetch_texel_1d_signed_a16, 1058 fetch_texel_2d_signed_a16, 1059 fetch_texel_3d_signed_a16 1060 }, 1061 { 1062 MESA_FORMAT_SIGNED_L16, 1063 fetch_texel_1d_signed_l16, 1064 fetch_texel_2d_signed_l16, 1065 fetch_texel_3d_signed_l16 1066 }, 1067 { 1068 MESA_FORMAT_SIGNED_AL1616, 1069 fetch_texel_1d_signed_al1616, 1070 fetch_texel_2d_signed_al1616, 1071 fetch_texel_3d_signed_al1616 1072 }, 1073 { 1074 MESA_FORMAT_SIGNED_I16, 1075 fetch_texel_1d_signed_i16, 1076 fetch_texel_2d_signed_i16, 1077 fetch_texel_3d_signed_i16 1078 }, 1079 { 1080 MESA_FORMAT_RGB9_E5_FLOAT, 1081 fetch_texel_1d_rgb9_e5, 1082 fetch_texel_2d_rgb9_e5, 1083 fetch_texel_3d_rgb9_e5 1084 }, 1085 { 1086 MESA_FORMAT_R11_G11_B10_FLOAT, 1087 fetch_texel_1d_r11_g11_b10f, 1088 fetch_texel_2d_r11_g11_b10f, 1089 fetch_texel_3d_r11_g11_b10f 1090 }, 1091 { 1092 MESA_FORMAT_Z32_FLOAT, 1093 fetch_texel_1d_f_r_f32, /* Reuse the R32F functions. */ 1094 fetch_texel_2d_f_r_f32, 1095 fetch_texel_3d_f_r_f32 1096 }, 1097 { 1098 MESA_FORMAT_Z32_FLOAT_X24S8, 1099 fetch_texel_1d_z32f_x24s8, 1100 fetch_texel_2d_z32f_x24s8, 1101 fetch_texel_3d_z32f_x24s8 1102 }, 1103 { 1104 MESA_FORMAT_ARGB2101010_UINT, 1105 NULL, 1106 NULL, 1107 NULL 1108 }, 1109 { 1110 MESA_FORMAT_ABGR2101010_UINT, 1111 NULL, 1112 NULL, 1113 NULL 1114 }, 1115 }; 1116 1117 1118 FetchTexelFunc 1119 _mesa_get_texel_fetch_func(gl_format format, GLuint dims) 1120 { 1121 #ifdef DEBUG 1122 /* check that the table entries are sorted by format name */ 1123 gl_format fmt; 1124 for (fmt = 0; fmt < MESA_FORMAT_COUNT; fmt++) { 1125 assert(texfetch_funcs[fmt].Name == fmt); 1126 } 1127 #endif 1128 1129 STATIC_ASSERT(Elements(texfetch_funcs) == MESA_FORMAT_COUNT); 1130 1131 assert(format < MESA_FORMAT_COUNT); 1132 1133 switch (dims) { 1134 case 1: 1135 return texfetch_funcs[format].Fetch1D; 1136 case 2: 1137 return texfetch_funcs[format].Fetch2D; 1138 case 3: 1139 return texfetch_funcs[format].Fetch3D; 1140 default: 1141 assert(0 && "bad dims in _mesa_get_texel_fetch_func"); 1142 return NULL; 1143 } 1144 } 1145 1146 1147 /** 1148 * Initialize the texture image's FetchTexel methods. 1149 */ 1150 static void 1151 set_fetch_functions(struct gl_sampler_object *samp, 1152 struct swrast_texture_image *texImage, GLuint dims) 1153 { 1154 gl_format format = texImage->Base.TexFormat; 1155 1156 ASSERT(dims == 1 || dims == 2 || dims == 3); 1157 1158 if (samp->sRGBDecode == GL_SKIP_DECODE_EXT && 1159 _mesa_get_format_color_encoding(format) == GL_SRGB) { 1160 format = _mesa_get_srgb_format_linear(format); 1161 } 1162 1163 texImage->FetchTexel = _mesa_get_texel_fetch_func(format, dims); 1164 ASSERT(texImage->FetchTexel); 1165 } 1166 1167 void 1168 _mesa_update_fetch_functions(struct gl_context *ctx, GLuint unit) 1169 { 1170 struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; 1171 struct gl_sampler_object *samp; 1172 GLuint face, i; 1173 GLuint dims; 1174 1175 if (!texObj) 1176 return; 1177 1178 samp = _mesa_get_samplerobj(ctx, unit); 1179 1180 dims = _mesa_get_texture_dimensions(texObj->Target); 1181 1182 for (face = 0; face < 6; face++) { 1183 for (i = 0; i < MAX_TEXTURE_LEVELS; i++) { 1184 if (texObj->Image[face][i]) { 1185 set_fetch_functions(samp, 1186 swrast_texture_image(texObj->Image[face][i]), 1187 dims); 1188 } 1189 } 1190 } 1191 } 1192
