src/mesa/swrast/s_texfetch.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  * Copyright (c) 2009  VMware, Inc.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * 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 /**
  93  * All compressed texture texel fetching is done though this function.
  94  * Basically just call a core-Mesa texel fetch function.
  95  */
  96 static void
  97 fetch_compressed(const struct swrast_texture_image *swImage,
  98                  GLint i, GLint j, GLint k, GLfloat *texel)
  99 {
 100    /* The FetchCompressedTexel function takes an integer pixel rowstride,
 101     * while the image's rowstride is bytes per row of blocks.
 102     */
 103    GLuint bw, bh;
 104    GLuint texelBytes = _mesa_get_format_bytes(swImage->Base.TexFormat);
 105    _mesa_get_format_block_size(swImage->Base.TexFormat, &bw, &bh);
 106    assert(swImage->RowStride * bw % texelBytes == 0);
 107
 108    swImage->FetchCompressedTexel(swImage->ImageSlices[k],
 109                                  swImage->RowStride * bw / texelBytes,
 110                                  i, j, texel);
 111 }
 112
 113
 114
 115 /**
 116  * Null texel fetch function.
 117  *
 118  * Have to have this so the FetchTexel function pointer is never NULL.
 119  */
 120 static void fetch_null_texelf( const struct swrast_texture_image *texImage,
 121                                GLint i, GLint j, GLint k, GLfloat *texel )
 122 {
 123    (void) texImage; (void) i; (void) j; (void) k;
 124    texel[RCOMP] = 0.0;
 125    texel[GCOMP] = 0.0;
 126    texel[BCOMP] = 0.0;
 127    texel[ACOMP] = 0.0;
 128    _mesa_warning(NULL, "fetch_null_texelf() called!");
 129 }
 130
 131
 132 #define FETCH_FUNCS(NAME)       \
 133    {                            \
 134       MESA_FORMAT_ ## NAME,     \
 135       fetch_texel_1d_ ## NAME,  \
 136       fetch_texel_2d_ ## NAME,  \
 137       fetch_texel_3d_ ## NAME,  \
 138    }
 139
 140 #define FETCH_NULL(NAME)        \
 141    {                            \
 142       MESA_FORMAT_ ## NAME,     \
 143       NULL,                     \
 144       NULL,                     \
 145       NULL                      \
 146    }
 147
 148 /**
 149  * Table to map MESA_FORMAT_ to texel fetch/store funcs.
 150  */
 151 static struct {
 152    mesa_format Name;
 153    FetchTexelFunc Fetch1D;
 154    FetchTexelFunc Fetch2D;
 155    FetchTexelFunc Fetch3D;
 156 }
 157 texfetch_funcs[] =
 158 {
 159    {
 160       MESA_FORMAT_NONE,
 161       fetch_null_texelf,
 162       fetch_null_texelf,
 163       fetch_null_texelf
 164    },
 165
 166    /* Packed unorm formats */
 167    FETCH_FUNCS(A8B8G8R8_UNORM),
 168    FETCH_FUNCS(X8B8G8R8_UNORM),
 169    FETCH_FUNCS(R8G8B8A8_UNORM),
 170    FETCH_FUNCS(R8G8B8X8_UNORM),
 171    FETCH_FUNCS(B8G8R8A8_UNORM),
 172    FETCH_FUNCS(B8G8R8X8_UNORM),
 173    FETCH_FUNCS(A8R8G8B8_UNORM),
 174    FETCH_FUNCS(X8R8G8B8_UNORM),
 175    FETCH_FUNCS(L16A16_UNORM),
 176    FETCH_FUNCS(A16L16_UNORM),
 177    FETCH_FUNCS(B5G6R5_UNORM),
 178    FETCH_FUNCS(R5G6B5_UNORM),
 179    FETCH_FUNCS(B4G4R4A4_UNORM),
 180    FETCH_NULL(B4G4R4X4_UNORM),
 181    FETCH_FUNCS(A4R4G4B4_UNORM),
 182    FETCH_FUNCS(A1B5G5R5_UNORM),
 183    FETCH_FUNCS(B5G5R5A1_UNORM),
 184    FETCH_NULL(B5G5R5X1_UNORM),
 185    FETCH_FUNCS(A1R5G5B5_UNORM),
 186    FETCH_FUNCS(L8A8_UNORM),
 187    FETCH_FUNCS(A8L8_UNORM),
 188    FETCH_FUNCS(R8G8_UNORM),
 189    FETCH_FUNCS(G8R8_UNORM),
 190    FETCH_FUNCS(L4A4_UNORM),
 191    FETCH_FUNCS(B2G3R3_UNORM),
 192    FETCH_FUNCS(R16G16_UNORM),
 193    FETCH_FUNCS(G16R16_UNORM),
 194    FETCH_FUNCS(B10G10R10A2_UNORM),
 195    FETCH_NULL(B10G10R10X2_UNORM),
 196    FETCH_FUNCS(R10G10B10A2_UNORM),
 197    FETCH_FUNCS(S8_UINT_Z24_UNORM),
 198    {
 199       MESA_FORMAT_X8_UINT_Z24_UNORM,
 200       fetch_texel_1d_S8_UINT_Z24_UNORM,
 201       fetch_texel_2d_S8_UINT_Z24_UNORM,
 202       fetch_texel_3d_S8_UINT_Z24_UNORM
 203    },
 204    FETCH_FUNCS(Z24_UNORM_S8_UINT),
 205    {
 206       MESA_FORMAT_Z24_UNORM_X8_UINT,
 207       fetch_texel_1d_Z24_UNORM_S8_UINT,
 208       fetch_texel_2d_Z24_UNORM_S8_UINT,
 209       fetch_texel_3d_Z24_UNORM_S8_UINT
 210    },
 211    FETCH_FUNCS(YCBCR),
 212    FETCH_FUNCS(YCBCR_REV),
 213
 214    /* Array unorm formats */
 215    FETCH_FUNCS(A_UNORM8),
 216    FETCH_FUNCS(A_UNORM16),
 217    FETCH_FUNCS(L_UNORM8),
 218    FETCH_FUNCS(L_UNORM16),
 219    FETCH_FUNCS(I_UNORM8),
 220    FETCH_FUNCS(I_UNORM16),
 221    FETCH_FUNCS(R_UNORM8),
 222    FETCH_FUNCS(R_UNORM16),
 223    FETCH_FUNCS(BGR_UNORM8),
 224    FETCH_FUNCS(RGB_UNORM8),
 225    FETCH_FUNCS(RGBA_UNORM16),
 226    FETCH_FUNCS(RGBX_UNORM16),
 227    FETCH_FUNCS(Z_UNORM16),
 228    FETCH_FUNCS(Z_UNORM32),
 229    FETCH_NULL(S_UINT8),
 230
 231    /* Packed signed/normalized formats */
 232    FETCH_FUNCS(A8B8G8R8_SNORM),
 233    FETCH_FUNCS(X8B8G8R8_SNORM),
 234    FETCH_FUNCS(R8G8B8A8_SNORM),
 235    FETCH_NULL(R8G8B8X8_SNORM),
 236    FETCH_FUNCS(R16G16_SNORM),
 237    FETCH_NULL(G16R16_SNORM),
 238    FETCH_FUNCS(R8G8_SNORM),
 239    FETCH_NULL(G8R8_SNORM),
 240    FETCH_FUNCS(L8A8_SNORM),
 241
 242    /* Array signed/normalized formats */
 243    FETCH_FUNCS(A_SNORM8),
 244    FETCH_FUNCS(A_SNORM16),
 245    FETCH_FUNCS(L_SNORM8),
 246    FETCH_FUNCS(L_SNORM16),
 247    FETCH_FUNCS(I_SNORM8),
 248    FETCH_FUNCS(I_SNORM16),
 249    FETCH_FUNCS(R_SNORM8),
 250    FETCH_FUNCS(R_SNORM16),
 251    FETCH_FUNCS(LA_SNORM16),
 252    FETCH_FUNCS(RGB_SNORM16),
 253    FETCH_FUNCS(RGBA_SNORM16),
 254    FETCH_NULL(RGBX_SNORM16),
 255
 256    /* Packed sRGB formats */
 257    FETCH_FUNCS(A8B8G8R8_SRGB),
 258    FETCH_FUNCS(B8G8R8A8_SRGB),
 259    FETCH_NULL(B8G8R8X8_SRGB),
 260    FETCH_FUNCS(R8G8B8A8_SRGB),
 261    FETCH_FUNCS(R8G8B8X8_SRGB),
 262    FETCH_FUNCS(L8A8_SRGB),
 263
 264    /* Array sRGB formats */
 265    FETCH_FUNCS(L_SRGB8),
 266    FETCH_FUNCS(BGR_SRGB8),
 267
 268    /* Packed float formats */
 269    FETCH_FUNCS(R9G9B9E5_FLOAT),
 270    FETCH_FUNCS(R11G11B10_FLOAT),
 271    FETCH_FUNCS(Z32_FLOAT_S8X24_UINT),
 272
 273    /* Array float formats */
 274    FETCH_FUNCS(A_FLOAT16),
 275    FETCH_FUNCS(A_FLOAT32),
 276    FETCH_FUNCS(L_FLOAT16),
 277    FETCH_FUNCS(L_FLOAT32),
 278    FETCH_FUNCS(LA_FLOAT16),
 279    FETCH_FUNCS(LA_FLOAT32),
 280    FETCH_FUNCS(I_FLOAT16),
 281    FETCH_FUNCS(I_FLOAT32),
 282    FETCH_FUNCS(R_FLOAT16),
 283    FETCH_FUNCS(R_FLOAT32),
 284    FETCH_FUNCS(RG_FLOAT16),
 285    FETCH_FUNCS(RG_FLOAT32),
 286    FETCH_FUNCS(RGB_FLOAT16),
 287    FETCH_FUNCS(RGB_FLOAT32),
 288    FETCH_FUNCS(RGBA_FLOAT16),
 289    FETCH_FUNCS(RGBA_FLOAT32),
 290    FETCH_FUNCS(RGBX_FLOAT16),
 291    FETCH_FUNCS(RGBX_FLOAT32),
 292    {
 293       MESA_FORMAT_Z_FLOAT32,
 294       fetch_texel_1d_R_FLOAT32, /* Reuse the R32F functions. */
 295       fetch_texel_2d_R_FLOAT32,
 296       fetch_texel_3d_R_FLOAT32
 297    },
 298
 299    /* Packed signed/unsigned non-normalized integer formats */
 300    FETCH_NULL(B10G10R10A2_UINT),
 301    FETCH_NULL(R10G10B10A2_UINT),
 302
 303    /* Array signed/unsigned non-normalized integer formats */
 304    FETCH_NULL(A_UINT8),
 305    FETCH_NULL(A_UINT16),
 306    FETCH_NULL(A_UINT32),
 307    FETCH_NULL(A_SINT8),
 308    FETCH_NULL(A_SINT16),
 309    FETCH_NULL(A_SINT32),
 310    FETCH_NULL(I_UINT8),
 311    FETCH_NULL(I_UINT16),
 312    FETCH_NULL(I_UINT32),
 313    FETCH_NULL(I_SINT8),
 314    FETCH_NULL(I_SINT16),
 315    FETCH_NULL(I_SINT32),
 316    FETCH_NULL(L_UINT8),
 317    FETCH_NULL(L_UINT16),
 318    FETCH_NULL(L_UINT32),
 319    FETCH_NULL(L_SINT8),
 320    FETCH_NULL(L_SINT16),
 321    FETCH_NULL(L_SINT32),
 322    FETCH_NULL(LA_UINT8),
 323    FETCH_NULL(LA_UINT16),
 324    FETCH_NULL(LA_UINT32),
 325    FETCH_NULL(LA_SINT8),
 326    FETCH_NULL(LA_SINT16),
 327    FETCH_NULL(LA_SINT32),
 328    FETCH_NULL(R_UINT8),
 329    FETCH_NULL(R_UINT16),
 330    FETCH_NULL(R_UINT32),
 331    FETCH_NULL(R_SINT8),
 332    FETCH_NULL(R_SINT16),
 333    FETCH_NULL(R_SINT32),
 334    FETCH_NULL(RG_UINT8),
 335    FETCH_NULL(RG_UINT16),
 336    FETCH_NULL(RG_UINT32),
 337    FETCH_NULL(RG_SINT8),
 338    FETCH_NULL(RG_SINT16),
 339    FETCH_NULL(RG_SINT32),
 340    FETCH_NULL(RGB_UINT8),
 341    FETCH_NULL(RGB_UINT16),
 342    FETCH_NULL(RGB_UINT32),
 343    FETCH_NULL(RGB_SINT8),
 344    FETCH_NULL(RGB_SINT16),
 345    FETCH_NULL(RGB_SINT32),
 346    FETCH_FUNCS(RGBA_UINT8),
 347    FETCH_FUNCS(RGBA_UINT16),
 348    FETCH_FUNCS(RGBA_UINT32),
 349    FETCH_FUNCS(RGBA_SINT8),
 350    FETCH_FUNCS(RGBA_SINT16),
 351    FETCH_FUNCS(RGBA_SINT32),
 352    FETCH_NULL(RGBX_UINT8),
 353    FETCH_NULL(RGBX_UINT16),
 354    FETCH_NULL(RGBX_UINT32),
 355    FETCH_NULL(RGBX_SINT8),
 356    FETCH_NULL(RGBX_SINT16),
 357    FETCH_NULL(RGBX_SINT32),
 358
 359    /* DXT compressed formats */
 360    {
 361       MESA_FORMAT_RGB_DXT1,
 362       fetch_compressed,
 363       fetch_compressed,
 364       fetch_compressed
 365    },
 366    {
 367       MESA_FORMAT_RGBA_DXT1,
 368       fetch_compressed,
 369       fetch_compressed,
 370       fetch_compressed
 371    },
 372    {
 373       MESA_FORMAT_RGBA_DXT3,
 374       fetch_compressed,
 375       fetch_compressed,
 376       fetch_compressed
 377    },
 378    {
 379       MESA_FORMAT_RGBA_DXT5,
 380       fetch_compressed,
 381       fetch_compressed,
 382       fetch_compressed
 383    },
 384
 385    /* DXT sRGB compressed formats */
 386    {
 387       MESA_FORMAT_SRGB_DXT1,
 388       fetch_compressed,
 389       fetch_compressed,
 390       fetch_compressed
 391    },
 392    {
 393       MESA_FORMAT_SRGBA_DXT1,
 394       fetch_compressed,
 395       fetch_compressed,
 396       fetch_compressed
 397    },
 398    {
 399       MESA_FORMAT_SRGBA_DXT3,
 400       fetch_compressed,
 401       fetch_compressed,
 402       fetch_compressed
 403    },
 404    {
 405       MESA_FORMAT_SRGBA_DXT5,
 406       fetch_compressed,
 407       fetch_compressed,
 408       fetch_compressed
 409    },
 410
 411    /* FXT1 compressed formats */
 412    {
 413       MESA_FORMAT_RGB_FXT1,
 414       fetch_compressed,
 415       fetch_compressed,
 416       fetch_compressed
 417    },
 418    {
 419       MESA_FORMAT_RGBA_FXT1,
 420       fetch_compressed,
 421       fetch_compressed,
 422       fetch_compressed
 423    },
 424
 425    /* RGTC compressed formats */
 426    {
 427       MESA_FORMAT_R_RGTC1_UNORM,
 428       fetch_compressed,
 429       fetch_compressed,
 430       fetch_compressed
 431    },
 432    {
 433       MESA_FORMAT_R_RGTC1_SNORM,
 434       fetch_compressed,
 435       fetch_compressed,
 436       fetch_compressed
 437    },
 438    {
 439       MESA_FORMAT_RG_RGTC2_UNORM,
 440       fetch_compressed,
 441       fetch_compressed,
 442       fetch_compressed
 443    },
 444    {
 445       MESA_FORMAT_RG_RGTC2_SNORM,
 446       fetch_compressed,
 447       fetch_compressed,
 448       fetch_compressed
 449    },
 450
 451    /* LATC1/2 compressed formats */
 452    {
 453       MESA_FORMAT_L_LATC1_UNORM,
 454       fetch_compressed,
 455       fetch_compressed,
 456       fetch_compressed
 457    },
 458    {
 459       MESA_FORMAT_L_LATC1_SNORM,
 460       fetch_compressed,
 461       fetch_compressed,
 462       fetch_compressed
 463    },
 464    {
 465       MESA_FORMAT_LA_LATC2_UNORM,
 466       fetch_compressed,
 467       fetch_compressed,
 468       fetch_compressed
 469    },
 470    {
 471       MESA_FORMAT_LA_LATC2_SNORM,
 472       fetch_compressed,
 473       fetch_compressed,
 474       fetch_compressed
 475    },
 476
 477    /* ETC1/2 compressed formats */
 478    {
 479       MESA_FORMAT_ETC1_RGB8,
 480       fetch_compressed,
 481       fetch_compressed,
 482       fetch_compressed
 483    },
 484    {
 485       MESA_FORMAT_ETC2_RGB8,
 486       fetch_compressed,
 487       fetch_compressed,
 488       fetch_compressed
 489    },
 490    {
 491       MESA_FORMAT_ETC2_SRGB8,
 492       fetch_compressed,
 493       fetch_compressed,
 494       fetch_compressed
 495    },
 496    {
 497       MESA_FORMAT_ETC2_RGBA8_EAC,
 498       fetch_compressed,
 499       fetch_compressed,
 500       fetch_compressed
 501    },
 502    {
 503       MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC,
 504       fetch_compressed,
 505       fetch_compressed,
 506       fetch_compressed
 507    },
 508    {
 509       MESA_FORMAT_ETC2_R11_EAC,
 510       fetch_compressed,
 511       fetch_compressed,
 512       fetch_compressed
 513    },
 514    {
 515       MESA_FORMAT_ETC2_RG11_EAC,
 516       fetch_compressed,
 517       fetch_compressed,
 518       fetch_compressed
 519    },
 520    {
 521       MESA_FORMAT_ETC2_SIGNED_R11_EAC,
 522       fetch_compressed,
 523       fetch_compressed,
 524       fetch_compressed
 525    },
 526    {
 527       MESA_FORMAT_ETC2_SIGNED_RG11_EAC,
 528       fetch_compressed,
 529       fetch_compressed,
 530       fetch_compressed
 531    },
 532    {
 533       MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1,
 534       fetch_compressed,
 535       fetch_compressed,
 536       fetch_compressed
 537    },
 538    {
 539       MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1,
 540       fetch_compressed,
 541       fetch_compressed,
 542       fetch_compressed
 543    }
 544 };
 545
 546
 547 /**
 548  * Initialize the texture image's FetchTexel methods.
 549  */
 550 static void
 551 set_fetch_functions(const struct gl_sampler_object *samp,
 552                     struct swrast_texture_image *texImage, GLuint dims)
 553 {
 554    mesa_format format = texImage->Base.TexFormat;
 555
 556 #ifdef DEBUG
 557    /* check that the table entries are sorted by format name */
 558    mesa_format fmt;
 559    for (fmt = 0; fmt < MESA_FORMAT_COUNT; fmt++) {
 560       assert(texfetch_funcs[fmt].Name == fmt);
 561    }
 562 #endif
 563
 564    STATIC_ASSERT(Elements(texfetch_funcs) == MESA_FORMAT_COUNT);
 565
 566    if (samp->sRGBDecode == GL_SKIP_DECODE_EXT &&
 567        _mesa_get_format_color_encoding(format) == GL_SRGB) {
 568       format = _mesa_get_srgb_format_linear(format);
 569    }
 570
 571    assert(format < MESA_FORMAT_COUNT);
 572
 573    switch (dims) {
 574    case 1:
 575       texImage->FetchTexel = texfetch_funcs[format].Fetch1D;
 576       break;
 577    case 2:
 578       texImage->FetchTexel = texfetch_funcs[format].Fetch2D;
 579       break;
 580    case 3:
 581       texImage->FetchTexel = texfetch_funcs[format].Fetch3D;
 582       break;
 583    default:
 584       assert(!"Bad dims in set_fetch_functions()");
 585    }
 586
 587    texImage->FetchCompressedTexel = _mesa_get_compressed_fetch_func(format);
 588
 589    ASSERT(texImage->FetchTexel);
 590 }
 591
 592 void
 593 _mesa_update_fetch_functions(struct gl_context *ctx, GLuint unit)
 594 {
 595    struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
 596    struct gl_sampler_object *samp;
 597    GLuint face, i;
 598    GLuint dims;
 599
 600    if (!texObj)
 601       return;
 602
 603    samp = _mesa_get_samplerobj(ctx, unit);
 604
 605    dims = _mesa_get_texture_dimensions(texObj->Target);
 606
 607    for (face = 0; face < 6; face++) {
 608       for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
 609          if (texObj->Image[face][i]) {
 610             set_fetch_functions(samp,
 611                                 swrast_texture_image(texObj->Image[face][i]),
 612                                 dims);
 613          }
 614       }
 615    }
 616 }