src/gallium/auxiliary/util/u_tile.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * 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
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * RGBA/float tile get/put functions.
  30  * Usable both by drivers and state trackers.
  31  */
  32
  33
  34 #include "pipe/p_defines.h"
  35 #include "util/u_inlines.h"
  36
  37 #include "util/u_format.h"
  38 #include "util/u_math.h"
  39 #include "util/u_memory.h"
  40 #include "util/u_rect.h"
  41 #include "util/u_tile.h"
  42
  43
  44 /**
  45  * Move raw block of pixels from transfer object to user memory.
  46  */
  47 void
  48 pipe_get_tile_raw(struct pipe_transfer *pt,
  49                   const void *src,
  50                   uint x, uint y, uint w, uint h,
  51                   void *dst, int dst_stride)
  52 {
  53    if (dst_stride == 0)
  54       dst_stride = util_format_get_stride(pt->resource->format, w);
  55
  56    if (u_clip_tile(x, y, &w, &h, &pt->box))
  57       return;
  58
  59    util_copy_rect(dst, pt->resource->format, dst_stride, 0, 0, w, h, src, pt->stride, x, y);
  60 }
  61
  62
  63 /**
  64  * Move raw block of pixels from user memory to transfer object.
  65  */
  66 void
  67 pipe_put_tile_raw(struct pipe_transfer *pt,
  68                   void *dst,
  69                   uint x, uint y, uint w, uint h,
  70                   const void *src, int src_stride)
  71 {
  72    enum pipe_format format = pt->resource->format;
  73
  74    if (src_stride == 0)
  75       src_stride = util_format_get_stride(format, w);
  76
  77    if (u_clip_tile(x, y, &w, &h, &pt->box))
  78       return;
  79
  80    util_copy_rect(dst, format, pt->stride, x, y, w, h, src, src_stride, 0, 0);
  81 }
  82
  83
  84
  85
  86 /** Convert short in [-32768,32767] to GLfloat in [-1.0,1.0] */
  87 #define SHORT_TO_FLOAT(S)   ((2.0F * (S) + 1.0F) * (1.0F/65535.0F))
  88
  89 #define UNCLAMPED_FLOAT_TO_SHORT(us, f)  \
  90    us = ( (short) ( CLAMP((f), -1.0, 1.0) * 32767.0F) )
  91
  92
  93
  94 /*** PIPE_FORMAT_Z16_UNORM ***/
  95
  96 /**
  97  * Return each Z value as four floats in [0,1].
  98  */
  99 static void
 100 z16_get_tile_rgba(const ushort *src,
 101                   unsigned w, unsigned h,
 102                   float *p,
 103                   unsigned dst_stride)
 104 {
 105    const float scale = 1.0f / 65535.0f;
 106    unsigned i, j;
 107
 108    for (i = 0; i < h; i++) {
 109       float *pRow = p;
 110       for (j = 0; j < w; j++, pRow += 4) {
 111          pRow[0] =
 112          pRow[1] =
 113          pRow[2] =
 114          pRow[3] = *src++ * scale;
 115       }
 116       p += dst_stride;
 117    }
 118 }
 119
 120
 121
 122
 123 /*** PIPE_FORMAT_Z32_UNORM ***/
 124
 125 /**
 126  * Return each Z value as four floats in [0,1].
 127  */
 128 static void
 129 z32_get_tile_rgba(const unsigned *src,
 130                   unsigned w, unsigned h,
 131                   float *p,
 132                   unsigned dst_stride)
 133 {
 134    const double scale = 1.0 / (double) 0xffffffff;
 135    unsigned i, j;
 136
 137    for (i = 0; i < h; i++) {
 138       float *pRow = p;
 139       for (j = 0; j < w; j++, pRow += 4) {
 140          pRow[0] =
 141          pRow[1] =
 142          pRow[2] =
 143          pRow[3] = (float) (*src++ * scale);
 144       }
 145       p += dst_stride;
 146    }
 147 }
 148
 149
 150 /*** PIPE_FORMAT_Z24_UNORM_S8_UINT ***/
 151
 152 /**
 153  * Return Z component as four float in [0,1].  Stencil part ignored.
 154  */
 155 static void
 156 s8z24_get_tile_rgba(const unsigned *src,
 157                     unsigned w, unsigned h,
 158                     float *p,
 159                     unsigned dst_stride)
 160 {
 161    const double scale = 1.0 / ((1 << 24) - 1);
 162    unsigned i, j;
 163
 164    for (i = 0; i < h; i++) {
 165       float *pRow = p;
 166       for (j = 0; j < w; j++, pRow += 4) {
 167          pRow[0] =
 168          pRow[1] =
 169          pRow[2] =
 170          pRow[3] = (float) (scale * (*src++ & 0xffffff));
 171       }
 172       p += dst_stride;
 173    }
 174 }
 175
 176
 177 /*** PIPE_FORMAT_S8_UINT_Z24_UNORM ***/
 178
 179 /**
 180  * Return Z component as four float in [0,1].  Stencil part ignored.
 181  */
 182 static void
 183 z24s8_get_tile_rgba(const unsigned *src,
 184                     unsigned w, unsigned h,
 185                     float *p,
 186                     unsigned dst_stride)
 187 {
 188    const double scale = 1.0 / ((1 << 24) - 1);
 189    unsigned i, j;
 190
 191    for (i = 0; i < h; i++) {
 192       float *pRow = p;
 193       for (j = 0; j < w; j++, pRow += 4) {
 194          pRow[0] =
 195          pRow[1] =
 196          pRow[2] =
 197          pRow[3] = (float) (scale * (*src++ >> 8));
 198       }
 199       p += dst_stride;
 200    }
 201 }
 202
 203 /*** PIPE_FORMAT_S8X24_UINT ***/
 204
 205 /**
 206  * Return S component as four uint32_t in [0..255].  Z part ignored.
 207  */
 208 static void
 209 s8x24_get_tile_rgba(const unsigned *src,
 210                     unsigned w, unsigned h,
 211                     float *p,
 212                     unsigned dst_stride)
 213 {
 214    unsigned i, j;
 215
 216    for (i = 0; i < h; i++) {
 217       float *pRow = p;
 218
 219       for (j = 0; j < w; j++, pRow += 4) {
 220          pRow[0] =
 221          pRow[1] =
 222          pRow[2] =
 223          pRow[3] = (float)((*src++ >> 24) & 0xff);
 224       }
 225
 226       p += dst_stride;
 227    }
 228 }
 229
 230 /*** PIPE_FORMAT_X24S8_UINT ***/
 231
 232 /**
 233  * Return S component as four uint32_t in [0..255].  Z part ignored.
 234  */
 235 static void
 236 x24s8_get_tile_rgba(const unsigned *src,
 237                     unsigned w, unsigned h,
 238                     float *p,
 239                     unsigned dst_stride)
 240 {
 241    unsigned i, j;
 242
 243    for (i = 0; i < h; i++) {
 244       float *pRow = p;
 245       for (j = 0; j < w; j++, pRow += 4) {
 246          pRow[0] =
 247          pRow[1] =
 248          pRow[2] =
 249          pRow[3] = (float)(*src++ & 0xff);
 250       }
 251       p += dst_stride;
 252    }
 253 }
 254
 255
 256 /**
 257  * Return S component as four uint32_t in [0..255].  Z part ignored.
 258  */
 259 static void
 260 s8_get_tile_rgba(const unsigned char *src,
 261                  unsigned w, unsigned h,
 262                  float *p,
 263                  unsigned dst_stride)
 264 {
 265    unsigned i, j;
 266
 267    for (i = 0; i < h; i++) {
 268       float *pRow = p;
 269       for (j = 0; j < w; j++, pRow += 4) {
 270          pRow[0] =
 271          pRow[1] =
 272          pRow[2] =
 273          pRow[3] = (float)(*src++ & 0xff);
 274       }
 275       p += dst_stride;
 276    }
 277 }
 278
 279 /*** PIPE_FORMAT_Z32_FLOAT ***/
 280
 281 /**
 282  * Return each Z value as four floats in [0,1].
 283  */
 284 static void
 285 z32f_get_tile_rgba(const float *src,
 286                    unsigned w, unsigned h,
 287                    float *p,
 288                    unsigned dst_stride)
 289 {
 290    unsigned i, j;
 291
 292    for (i = 0; i < h; i++) {
 293       float *pRow = p;
 294       for (j = 0; j < w; j++, pRow += 4) {
 295          pRow[0] =
 296          pRow[1] =
 297          pRow[2] =
 298          pRow[3] = *src++;
 299       }
 300       p += dst_stride;
 301    }
 302 }
 303
 304 /*** PIPE_FORMAT_Z32_FLOAT_S8X24_UINT ***/
 305
 306 /**
 307  * Return each Z value as four floats in [0,1].
 308  */
 309 static void
 310 z32f_x24s8_get_tile_rgba(const float *src,
 311                          unsigned w, unsigned h,
 312                          float *p,
 313                          unsigned dst_stride)
 314 {
 315    unsigned i, j;
 316
 317    for (i = 0; i < h; i++) {
 318       float *pRow = p;
 319       for (j = 0; j < w; j++, pRow += 4) {
 320          pRow[0] =
 321          pRow[1] =
 322          pRow[2] =
 323          pRow[3] = *src;
 324          src += 2;
 325       }
 326       p += dst_stride;
 327    }
 328 }
 329
 330 /*** PIPE_FORMAT_X32_S8X24_UINT ***/
 331
 332 /**
 333  * Return S component as four uint32_t in [0..255].  Z part ignored.
 334  */
 335 static void
 336 x32_s8_get_tile_rgba(const unsigned *src,
 337                      unsigned w, unsigned h,
 338                      float *p,
 339                      unsigned dst_stride)
 340 {
 341    unsigned i, j;
 342
 343    for (i = 0; i < h; i++) {
 344       float *pRow = p;
 345       for (j = 0; j < w; j++, pRow += 4) {
 346          src++;
 347          pRow[0] =
 348          pRow[1] =
 349          pRow[2] =
 350          pRow[3] = (float)(*src++ & 0xff);
 351       }
 352       p += dst_stride;
 353    }
 354 }
 355
 356 void
 357 pipe_tile_raw_to_rgba(enum pipe_format format,
 358                       const void *src,
 359                       uint w, uint h,
 360                       float *dst, unsigned dst_stride)
 361 {
 362    switch (format) {
 363    case PIPE_FORMAT_Z16_UNORM:
 364       z16_get_tile_rgba((ushort *) src, w, h, dst, dst_stride);
 365       break;
 366    case PIPE_FORMAT_Z32_UNORM:
 367       z32_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 368       break;
 369    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 370    case PIPE_FORMAT_Z24X8_UNORM:
 371       s8z24_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 372       break;
 373    case PIPE_FORMAT_S8_UINT:
 374       s8_get_tile_rgba((unsigned char *) src, w, h, dst, dst_stride);
 375       break;
 376    case PIPE_FORMAT_X24S8_UINT:
 377       s8x24_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 378       break;
 379    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 380    case PIPE_FORMAT_X8Z24_UNORM:
 381       z24s8_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 382       break;
 383    case PIPE_FORMAT_S8X24_UINT:
 384       x24s8_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 385       break;
 386    case PIPE_FORMAT_Z32_FLOAT:
 387       z32f_get_tile_rgba((float *) src, w, h, dst, dst_stride);
 388       break;
 389    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
 390       z32f_x24s8_get_tile_rgba((float *) src, w, h, dst, dst_stride);
 391       break;
 392    case PIPE_FORMAT_X32_S8X24_UINT:
 393       x32_s8_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 394       break;
 395    default:
 396       util_format_read_4f(format,
 397                           dst, dst_stride * sizeof(float),
 398                           src, util_format_get_stride(format, w),
 399                           0, 0, w, h);
 400    }
 401 }
 402
 403 void
 404 pipe_tile_raw_to_unsigned(enum pipe_format format,
 405                           const void *src,
 406                           uint w, uint h,
 407                           unsigned *dst, unsigned dst_stride)
 408 {
 409   util_format_read_4ui(format,
 410                        dst, dst_stride * sizeof(float),
 411                        src, util_format_get_stride(format, w),
 412                        0, 0, w, h);
 413 }
 414
 415 void
 416 pipe_tile_raw_to_signed(enum pipe_format format,
 417                           void *src,
 418                           uint w, uint h,
 419                           int *dst, unsigned dst_stride)
 420 {
 421   util_format_read_4i(format,
 422                       dst, dst_stride * sizeof(float),
 423                       src, util_format_get_stride(format, w),
 424                       0, 0, w, h);
 425 }
 426
 427 void
 428 pipe_get_tile_rgba(struct pipe_transfer *pt,
 429                    const void *src,
 430                    uint x, uint y, uint w, uint h,
 431                    float *p)
 432 {
 433    pipe_get_tile_rgba_format(pt, src, x, y, w, h, pt->resource->format, p);
 434 }
 435
 436
 437 void
 438 pipe_get_tile_rgba_format(struct pipe_transfer *pt,
 439                           const void *src,
 440                           uint x, uint y, uint w, uint h,
 441                           enum pipe_format format,
 442                           float *p)
 443 {
 444    unsigned dst_stride = w * 4;
 445    void *packed;
 446
 447    if (u_clip_tile(x, y, &w, &h, &pt->box)) {
 448       return;
 449    }
 450
 451    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 452    if (!packed) {
 453       return;
 454    }
 455
 456    if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
 457       assert((x & 1) == 0);
 458    }
 459
 460    pipe_get_tile_raw(pt, src, x, y, w, h, packed, 0);
 461
 462    pipe_tile_raw_to_rgba(format, packed, w, h, p, dst_stride);
 463
 464    FREE(packed);
 465 }
 466
 467
 468 void
 469 pipe_put_tile_rgba(struct pipe_transfer *pt,
 470                    void *dst,
 471                    uint x, uint y, uint w, uint h,
 472                    const float *p)
 473 {
 474    pipe_put_tile_rgba_format(pt, dst, x, y, w, h, pt->resource->format, p);
 475 }
 476
 477
 478 void
 479 pipe_put_tile_rgba_format(struct pipe_transfer *pt,
 480                           void *dst,
 481                           uint x, uint y, uint w, uint h,
 482                           enum pipe_format format,
 483                           const float *p)
 484 {
 485    unsigned src_stride = w * 4;
 486    void *packed;
 487
 488    if (u_clip_tile(x, y, &w, &h, &pt->box))
 489       return;
 490
 491    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 492
 493    if (!packed)
 494       return;
 495
 496    switch (format) {
 497    case PIPE_FORMAT_Z16_UNORM:
 498       /*z16_put_tile_rgba((ushort *) packed, w, h, p, src_stride);*/
 499       break;
 500    case PIPE_FORMAT_Z32_UNORM:
 501       /*z32_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 502       break;
 503    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 504    case PIPE_FORMAT_Z24X8_UNORM:
 505       /*s8z24_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 506       break;
 507    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 508    case PIPE_FORMAT_X8Z24_UNORM:
 509       /*z24s8_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 510       break;
 511    case PIPE_FORMAT_Z32_FLOAT:
 512       /*z32f_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 513       break;
 514    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
 515       /*z32f_s8x24_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 516       break;
 517    default:
 518       util_format_write_4f(format,
 519                            p, src_stride * sizeof(float),
 520                            packed, util_format_get_stride(format, w),
 521                            0, 0, w, h);
 522    }
 523
 524    pipe_put_tile_raw(pt, dst, x, y, w, h, packed, 0);
 525
 526    FREE(packed);
 527 }
 528
 529 void
 530 pipe_put_tile_i_format(struct pipe_transfer *pt,
 531                        void *dst,
 532                        uint x, uint y, uint w, uint h,
 533                        enum pipe_format format,
 534                        const int *p)
 535 {
 536    unsigned src_stride = w * 4;
 537    void *packed;
 538
 539    if (u_clip_tile(x, y, &w, &h, &pt->box))
 540       return;
 541
 542    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 543
 544    if (!packed)
 545       return;
 546
 547    util_format_write_4i(format,
 548                         p, src_stride * sizeof(float),
 549                         packed, util_format_get_stride(format, w),
 550                         0, 0, w, h);
 551
 552    pipe_put_tile_raw(pt, dst, x, y, w, h, packed, 0);
 553
 554    FREE(packed);
 555 }
 556
 557 void
 558 pipe_put_tile_ui_format(struct pipe_transfer *pt,
 559                         void *dst,
 560                         uint x, uint y, uint w, uint h,
 561                         enum pipe_format format,
 562                         const unsigned int *p)
 563 {
 564    unsigned src_stride = w * 4;
 565    void *packed;
 566
 567    if (u_clip_tile(x, y, &w, &h, &pt->box))
 568       return;
 569
 570    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 571
 572    if (!packed)
 573       return;
 574
 575    util_format_write_4ui(format,
 576                          p, src_stride * sizeof(float),
 577                          packed, util_format_get_stride(format, w),
 578                          0, 0, w, h);
 579
 580    pipe_put_tile_raw(pt, dst, x, y, w, h, packed, 0);
 581
 582    FREE(packed);
 583 }
 584
 585 /**
 586  * Get a block of Z values, converted to 32-bit range.
 587  */
 588 void
 589 pipe_get_tile_z(struct pipe_transfer *pt,
 590                 const void *src,
 591                 uint x, uint y, uint w, uint h,
 592                 uint *z)
 593 {
 594    const uint dstStride = w;
 595    const ubyte *map = src;
 596    uint *pDest = z;
 597    uint i, j;
 598    enum pipe_format format = pt->resource->format;
 599
 600    if (u_clip_tile(x, y, &w, &h, &pt->box))
 601       return;
 602
 603    switch (format) {
 604    case PIPE_FORMAT_Z32_UNORM:
 605       {
 606          const uint *ptrc
 607             = (const uint *)(map  + y * pt->stride + x*4);
 608          for (i = 0; i < h; i++) {
 609             memcpy(pDest, ptrc, 4 * w);
 610             pDest += dstStride;
 611             ptrc += pt->stride/4;
 612          }
 613       }
 614       break;
 615    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 616    case PIPE_FORMAT_Z24X8_UNORM:
 617       {
 618          const uint *ptrc
 619             = (const uint *)(map + y * pt->stride + x*4);
 620          for (i = 0; i < h; i++) {
 621             for (j = 0; j < w; j++) {
 622                /* convert 24-bit Z to 32-bit Z */
 623                pDest[j] = (ptrc[j] << 8) | ((ptrc[j] >> 16) & 0xff);
 624             }
 625             pDest += dstStride;
 626             ptrc += pt->stride/4;
 627          }
 628       }
 629       break;
 630    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 631    case PIPE_FORMAT_X8Z24_UNORM:
 632       {
 633          const uint *ptrc
 634             = (const uint *)(map + y * pt->stride + x*4);
 635          for (i = 0; i < h; i++) {
 636             for (j = 0; j < w; j++) {
 637                /* convert 24-bit Z to 32-bit Z */
 638                pDest[j] = (ptrc[j] & 0xffffff00) | ((ptrc[j] >> 24) & 0xff);
 639             }
 640             pDest += dstStride;
 641             ptrc += pt->stride/4;
 642          }
 643       }
 644       break;
 645    case PIPE_FORMAT_Z16_UNORM:
 646       {
 647          const ushort *ptrc
 648             = (const ushort *)(map + y * pt->stride + x*2);
 649          for (i = 0; i < h; i++) {
 650             for (j = 0; j < w; j++) {
 651                /* convert 16-bit Z to 32-bit Z */
 652                pDest[j] = (ptrc[j] << 16) | ptrc[j];
 653             }
 654             pDest += dstStride;
 655             ptrc += pt->stride/2;
 656          }
 657       }
 658       break;
 659    case PIPE_FORMAT_Z32_FLOAT:
 660       {
 661          const float *ptrc = (const float *)(map + y * pt->stride + x*4);
 662          for (i = 0; i < h; i++) {
 663             for (j = 0; j < w; j++) {
 664                /* convert float Z to 32-bit Z */
 665                if (ptrc[j] <= 0.0) {
 666                   pDest[j] = 0;
 667                }
 668                else if (ptrc[j] >= 1.0) {
 669                   pDest[j] = 0xffffffff;
 670                }
 671                else {
 672                   double z = ptrc[j] * 0xffffffff;
 673                   pDest[j] = (uint) z;
 674                }
 675             }
 676             pDest += dstStride;
 677             ptrc += pt->stride/4;
 678          }
 679       }
 680       break;
 681    default:
 682       assert(0);
 683    }
 684 }
 685
 686
 687 void
 688 pipe_put_tile_z(struct pipe_transfer *pt,
 689                 void *dst,
 690                 uint x, uint y, uint w, uint h,
 691                 const uint *zSrc)
 692 {
 693    const uint srcStride = w;
 694    const uint *ptrc = zSrc;
 695    ubyte *map = dst;
 696    uint i, j;
 697    enum pipe_format format = pt->resource->format;
 698
 699    if (u_clip_tile(x, y, &w, &h, &pt->box))
 700       return;
 701
 702    switch (format) {
 703    case PIPE_FORMAT_Z32_UNORM:
 704       {
 705          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 706          for (i = 0; i < h; i++) {
 707             memcpy(pDest, ptrc, 4 * w);
 708             pDest += pt->stride/4;
 709             ptrc += srcStride;
 710          }
 711       }
 712       break;
 713    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 714       {
 715          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 716          /*assert((pt->usage & PIPE_TRANSFER_READ_WRITE) == PIPE_TRANSFER_READ_WRITE);*/
 717          for (i = 0; i < h; i++) {
 718             for (j = 0; j < w; j++) {
 719                /* convert 32-bit Z to 24-bit Z, preserve stencil */
 720                pDest[j] = (pDest[j] & 0xff000000) | ptrc[j] >> 8;
 721             }
 722             pDest += pt->stride/4;
 723             ptrc += srcStride;
 724          }
 725       }
 726       break;
 727    case PIPE_FORMAT_Z24X8_UNORM:
 728       {
 729          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 730          for (i = 0; i < h; i++) {
 731             for (j = 0; j < w; j++) {
 732                /* convert 32-bit Z to 24-bit Z (0 stencil) */
 733                pDest[j] = ptrc[j] >> 8;
 734             }
 735             pDest += pt->stride/4;
 736             ptrc += srcStride;
 737          }
 738       }
 739       break;
 740    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 741       {
 742          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 743          /*assert((pt->usage & PIPE_TRANSFER_READ_WRITE) == PIPE_TRANSFER_READ_WRITE);*/
 744          for (i = 0; i < h; i++) {
 745             for (j = 0; j < w; j++) {
 746                /* convert 32-bit Z to 24-bit Z, preserve stencil */
 747                pDest[j] = (pDest[j] & 0xff) | (ptrc[j] & 0xffffff00);
 748             }
 749             pDest += pt->stride/4;
 750             ptrc += srcStride;
 751          }
 752       }
 753       break;
 754    case PIPE_FORMAT_X8Z24_UNORM:
 755       {
 756          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 757          for (i = 0; i < h; i++) {
 758             for (j = 0; j < w; j++) {
 759                /* convert 32-bit Z to 24-bit Z (0 stencil) */
 760                pDest[j] = ptrc[j] & 0xffffff00;
 761             }
 762             pDest += pt->stride/4;
 763             ptrc += srcStride;
 764          }
 765       }
 766       break;
 767    case PIPE_FORMAT_Z16_UNORM:
 768       {
 769          ushort *pDest = (ushort *) (map + y * pt->stride + x*2);
 770          for (i = 0; i < h; i++) {
 771             for (j = 0; j < w; j++) {
 772                /* convert 32-bit Z to 16-bit Z */
 773                pDest[j] = ptrc[j] >> 16;
 774             }
 775             pDest += pt->stride/2;
 776             ptrc += srcStride;
 777          }
 778       }
 779       break;
 780    case PIPE_FORMAT_Z32_FLOAT:
 781       {
 782          float *pDest = (float *) (map + y * pt->stride + x*2);
 783          for (i = 0; i < h; i++) {
 784             for (j = 0; j < w; j++) {
 785                /* convert 32-bit integer Z to float Z */
 786                const double scale = 1.0 / 0xffffffffU;
 787                pDest[j] = ptrc[j] * scale;
 788             }
 789             pDest += pt->stride/4;
 790             ptrc += srcStride;
 791          }
 792       }
 793       break;
 794    default:
 795       assert(0);
 796    }
 797 }
 798
 799
 800 void
 801 pipe_get_tile_ui_format(struct pipe_transfer *pt,
 802                         const void *src,
 803                         uint x, uint y, uint w, uint h,
 804                         enum pipe_format format,
 805                         unsigned int *p)
 806 {
 807    unsigned dst_stride = w * 4;
 808    void *packed;
 809
 810    if (u_clip_tile(x, y, &w, &h, &pt->box)) {
 811       return;
 812    }
 813
 814    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 815    if (!packed) {
 816       return;
 817    }
 818
 819    if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
 820       assert((x & 1) == 0);
 821    }
 822
 823    pipe_get_tile_raw(pt, src, x, y, w, h, packed, 0);
 824
 825    pipe_tile_raw_to_unsigned(format, packed, w, h, p, dst_stride);
 826
 827    FREE(packed);
 828 }
 829
 830
 831 void
 832 pipe_get_tile_i_format(struct pipe_transfer *pt,
 833                        const void *src,
 834                        uint x, uint y, uint w, uint h,
 835                        enum pipe_format format,
 836                        int *p)
 837 {
 838    unsigned dst_stride = w * 4;
 839    void *packed;
 840
 841    if (u_clip_tile(x, y, &w, &h, &pt->box)) {
 842       return;
 843    }
 844
 845    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 846    if (!packed) {
 847       return;
 848    }
 849
 850    if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
 851       assert((x & 1) == 0);
 852    }
 853
 854    pipe_get_tile_raw(pt, src, x, y, w, h, packed, 0);
 855
 856    pipe_tile_raw_to_signed(format, packed, w, h, p, dst_stride);
 857
 858    FREE(packed);
 859 }