src/gallium/drivers/r300/r300_texture.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  23
  24 /* Always include headers in the reverse order!! ~ M. */
  25 #include "r300_texture.h"
  26
  27 #include "r300_context.h"
  28 #include "r300_reg.h"
  29 #include "r300_texture_desc.h"
  30 #include "r300_transfer.h"
  31 #include "r300_screen.h"
  32 #include "r300_winsys.h"
  33
  34 #include "util/u_format.h"
  35 #include "util/u_format_s3tc.h"
  36 #include "util/u_math.h"
  37 #include "util/u_memory.h"
  38 #include "util/u_mm.h"
  39
  40 #include "pipe/p_screen.h"
  41
  42 unsigned r300_get_swizzle_combined(const unsigned char *swizzle_format,
  43                                    const unsigned char *swizzle_view,
  44                                    boolean dxtc_swizzle)
  45 {
  46     unsigned i;
  47     unsigned char swizzle[4];
  48     unsigned result = 0;
  49     const uint32_t swizzle_shift[4] = {
  50         R300_TX_FORMAT_R_SHIFT,
  51         R300_TX_FORMAT_G_SHIFT,
  52         R300_TX_FORMAT_B_SHIFT,
  53         R300_TX_FORMAT_A_SHIFT
  54     };
  55     uint32_t swizzle_bit[4] = {
  56         dxtc_swizzle ? R300_TX_FORMAT_Z : R300_TX_FORMAT_X,
  57         R300_TX_FORMAT_Y,
  58         dxtc_swizzle ? R300_TX_FORMAT_X : R300_TX_FORMAT_Z,
  59         R300_TX_FORMAT_W
  60     };
  61
  62     if (swizzle_view) {
  63         /* Combine two sets of swizzles. */
  64         for (i = 0; i < 4; i++) {
  65             swizzle[i] = swizzle_view[i] <= UTIL_FORMAT_SWIZZLE_W ?
  66                          swizzle_format[swizzle_view[i]] : swizzle_view[i];
  67         }
  68     } else {
  69         memcpy(swizzle, swizzle_format, 4);
  70     }
  71
  72     /* Get swizzle. */
  73     for (i = 0; i < 4; i++) {
  74         switch (swizzle[i]) {
  75             case UTIL_FORMAT_SWIZZLE_Y:
  76                 result |= swizzle_bit[1] << swizzle_shift[i];
  77                 break;
  78             case UTIL_FORMAT_SWIZZLE_Z:
  79                 result |= swizzle_bit[2] << swizzle_shift[i];
  80                 break;
  81             case UTIL_FORMAT_SWIZZLE_W:
  82                 result |= swizzle_bit[3] << swizzle_shift[i];
  83                 break;
  84             case UTIL_FORMAT_SWIZZLE_0:
  85                 result |= R300_TX_FORMAT_ZERO << swizzle_shift[i];
  86                 break;
  87             case UTIL_FORMAT_SWIZZLE_1:
  88                 result |= R300_TX_FORMAT_ONE << swizzle_shift[i];
  89                 break;
  90             default: /* UTIL_FORMAT_SWIZZLE_X */
  91                 result |= swizzle_bit[0] << swizzle_shift[i];
  92         }
  93     }
  94     return result;
  95 }
  96
  97 /* Translate a pipe_format into a useful texture format for sampling.
  98  *
  99  * Some special formats are translated directly using R300_EASY_TX_FORMAT,
 100  * but the majority of them is translated in a generic way, automatically
 101  * supporting all the formats hw can support.
 102  *
 103  * R300_EASY_TX_FORMAT swizzles the texture.
 104  * Note the signature of R300_EASY_TX_FORMAT:
 105  *   R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
 106  *
 107  * The FORMAT specifies how the texture sampler will treat the texture, and
 108  * makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
 109 uint32_t r300_translate_texformat(enum pipe_format format,
 110                                   const unsigned char *swizzle_view,
 111                                   boolean is_r500,
 112                                   boolean dxtc_swizzle)
 113 {
 114     uint32_t result = 0;
 115     const struct util_format_description *desc;
 116     unsigned i;
 117     boolean uniform = TRUE;
 118     const uint32_t sign_bit[4] = {
 119         R300_TX_FORMAT_SIGNED_X,
 120         R300_TX_FORMAT_SIGNED_Y,
 121         R300_TX_FORMAT_SIGNED_Z,
 122         R300_TX_FORMAT_SIGNED_W,
 123     };
 124
 125     desc = util_format_description(format);
 126
 127     /* Colorspace (return non-RGB formats directly). */
 128     switch (desc->colorspace) {
 129         /* Depth stencil formats.
 130          * Swizzles are added in r300_merge_textures_and_samplers. */
 131         case UTIL_FORMAT_COLORSPACE_ZS:
 132             switch (format) {
 133                 case PIPE_FORMAT_Z16_UNORM:
 134                     return R300_TX_FORMAT_X16;
 135                 case PIPE_FORMAT_X8Z24_UNORM:
 136                 case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 137                     if (is_r500)
 138                         return R500_TX_FORMAT_Y8X24;
 139                     else
 140                         return R300_TX_FORMAT_Y16X16;
 141                 default:
 142                     return ~0; /* Unsupported. */
 143             }
 144
 145         /* YUV formats. */
 146         case UTIL_FORMAT_COLORSPACE_YUV:
 147             result |= R300_TX_FORMAT_YUV_TO_RGB;
 148
 149             switch (format) {
 150                 case PIPE_FORMAT_UYVY:
 151                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
 152                 case PIPE_FORMAT_YUYV:
 153                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
 154                 default:
 155                     return ~0; /* Unsupported/unknown. */
 156             }
 157
 158         /* Add gamma correction. */
 159         case UTIL_FORMAT_COLORSPACE_SRGB:
 160             result |= R300_TX_FORMAT_GAMMA;
 161             break;
 162
 163         default:
 164             switch (format) {
 165                 /* Same as YUV but without the YUR->RGB conversion. */
 166                 case PIPE_FORMAT_R8G8_B8G8_UNORM:
 167                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
 168                 case PIPE_FORMAT_G8R8_G8B8_UNORM:
 169                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
 170                 default:;
 171             }
 172     }
 173
 174     result |= r300_get_swizzle_combined(desc->swizzle, swizzle_view,
 175                     util_format_is_compressed(format) && dxtc_swizzle);
 176
 177     /* S3TC formats. */
 178     if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 179         if (!util_format_s3tc_enabled) {
 180             return ~0; /* Unsupported. */
 181         }
 182
 183         switch (format) {
 184             case PIPE_FORMAT_DXT1_RGB:
 185             case PIPE_FORMAT_DXT1_RGBA:
 186             case PIPE_FORMAT_DXT1_SRGB:
 187             case PIPE_FORMAT_DXT1_SRGBA:
 188                 return R300_TX_FORMAT_DXT1 | result;
 189             case PIPE_FORMAT_DXT3_RGBA:
 190             case PIPE_FORMAT_DXT3_SRGBA:
 191                 return R300_TX_FORMAT_DXT3 | result;
 192             case PIPE_FORMAT_DXT5_RGBA:
 193             case PIPE_FORMAT_DXT5_SRGBA:
 194                 return R300_TX_FORMAT_DXT5 | result;
 195             default:
 196                 return ~0; /* Unsupported/unknown. */
 197         }
 198     }
 199
 200     /* Add sign. */
 201     for (i = 0; i < desc->nr_channels; i++) {
 202         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 203             result |= sign_bit[i];
 204         }
 205     }
 206
 207     /* This is truly a special format.
 208      * It stores R8G8 and B is computed using sqrt(1 - R^2 - G^2)
 209      * in the sampler unit. Also known as D3DFMT_CxV8U8. */
 210     if (format == PIPE_FORMAT_R8G8Bx_SNORM) {
 211         return R300_TX_FORMAT_CxV8U8 | result;
 212     }
 213
 214     /* RGTC formats. */
 215     if (desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
 216         switch (format) {
 217             case PIPE_FORMAT_RGTC1_SNORM:
 218                 result |= sign_bit[0];
 219             case PIPE_FORMAT_RGTC1_UNORM:
 220                 result &= ~(0xfff << 9); /* mask off swizzle */
 221                 result |= R300_TX_FORMAT_Y << R300_TX_FORMAT_R_SHIFT;
 222                 return R500_TX_FORMAT_ATI1N | result;
 223             case PIPE_FORMAT_RGTC2_SNORM:
 224                 result |= sign_bit[0] | sign_bit[1];
 225             case PIPE_FORMAT_RGTC2_UNORM:
 226                 result &= ~(0xfff << 9); /* mask off swizzle */
 227                 result |= R300_TX_FORMAT_Y << R300_TX_FORMAT_R_SHIFT |
 228                           R300_TX_FORMAT_X << R300_TX_FORMAT_G_SHIFT;
 229                 return R400_TX_FORMAT_ATI2N | result;
 230             default:
 231                 return ~0; /* Unsupported/unknown. */
 232         }
 233     }
 234
 235     /* See whether the components are of the same size. */
 236     for (i = 1; i < desc->nr_channels; i++) {
 237         uniform = uniform && desc->channel[0].size == desc->channel[i].size;
 238     }
 239
 240     /* Non-uniform formats. */
 241     if (!uniform) {
 242         switch (desc->nr_channels) {
 243             case 3:
 244                 if (desc->channel[0].size == 5 &&
 245                     desc->channel[1].size == 6 &&
 246                     desc->channel[2].size == 5) {
 247                     return R300_TX_FORMAT_Z5Y6X5 | result;
 248                 }
 249                 if (desc->channel[0].size == 5 &&
 250                     desc->channel[1].size == 5 &&
 251                     desc->channel[2].size == 6) {
 252                     return R300_TX_FORMAT_Z6Y5X5 | result;
 253                 }
 254                 if (desc->channel[0].size == 2 &&
 255                     desc->channel[1].size == 3 &&
 256                     desc->channel[2].size == 3) {
 257                     return R300_TX_FORMAT_Z3Y3X2 | result;
 258                 }
 259                 return ~0; /* Unsupported/unknown. */
 260
 261             case 4:
 262                 if (desc->channel[0].size == 5 &&
 263                     desc->channel[1].size == 5 &&
 264                     desc->channel[2].size == 5 &&
 265                     desc->channel[3].size == 1) {
 266                     return R300_TX_FORMAT_W1Z5Y5X5 | result;
 267                 }
 268                 if (desc->channel[0].size == 10 &&
 269                     desc->channel[1].size == 10 &&
 270                     desc->channel[2].size == 10 &&
 271                     desc->channel[3].size == 2) {
 272                     return R300_TX_FORMAT_W2Z10Y10X10 | result;
 273                 }
 274         }
 275         return ~0; /* Unsupported/unknown. */
 276     }
 277
 278     /* Find the first non-VOID channel. */
 279     for (i = 0; i < 4; i++) {
 280         if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 281             break;
 282         }
 283     }
 284
 285     if (i == 4)
 286         return ~0; /* Unsupported/unknown. */
 287
 288     /* And finally, uniform formats. */
 289     switch (desc->channel[i].type) {
 290         case UTIL_FORMAT_TYPE_UNSIGNED:
 291         case UTIL_FORMAT_TYPE_SIGNED:
 292             if (!desc->channel[i].normalized &&
 293                 desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
 294                 return ~0;
 295             }
 296
 297             switch (desc->channel[i].size) {
 298                 case 4:
 299                     switch (desc->nr_channels) {
 300                         case 2:
 301                             return R300_TX_FORMAT_Y4X4 | result;
 302                         case 4:
 303                             return R300_TX_FORMAT_W4Z4Y4X4 | result;
 304                     }
 305                     return ~0;
 306
 307                 case 8:
 308                     switch (desc->nr_channels) {
 309                         case 1:
 310                             return R300_TX_FORMAT_X8 | result;
 311                         case 2:
 312                             return R300_TX_FORMAT_Y8X8 | result;
 313                         case 4:
 314                             return R300_TX_FORMAT_W8Z8Y8X8 | result;
 315                     }
 316                     return ~0;
 317
 318                 case 16:
 319                     switch (desc->nr_channels) {
 320                         case 1:
 321                             return R300_TX_FORMAT_X16 | result;
 322                         case 2:
 323                             return R300_TX_FORMAT_Y16X16 | result;
 324                         case 4:
 325                             return R300_TX_FORMAT_W16Z16Y16X16 | result;
 326                     }
 327             }
 328             return ~0;
 329
 330         case UTIL_FORMAT_TYPE_FLOAT:
 331             switch (desc->channel[i].size) {
 332                 case 16:
 333                     switch (desc->nr_channels) {
 334                         case 1:
 335                             return R300_TX_FORMAT_16F | result;
 336                         case 2:
 337                             return R300_TX_FORMAT_16F_16F | result;
 338                         case 4:
 339                             return R300_TX_FORMAT_16F_16F_16F_16F | result;
 340                     }
 341                     return ~0;
 342
 343                 case 32:
 344                     switch (desc->nr_channels) {
 345                         case 1:
 346                             return R300_TX_FORMAT_32F | result;
 347                         case 2:
 348                             return R300_TX_FORMAT_32F_32F | result;
 349                         case 4:
 350                             return R300_TX_FORMAT_32F_32F_32F_32F | result;
 351                     }
 352             }
 353     }
 354
 355     return ~0; /* Unsupported/unknown. */
 356 }
 357
 358 uint32_t r500_tx_format_msb_bit(enum pipe_format format)
 359 {
 360     switch (format) {
 361         case PIPE_FORMAT_RGTC1_UNORM:
 362         case PIPE_FORMAT_RGTC1_SNORM:
 363         case PIPE_FORMAT_X8Z24_UNORM:
 364         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 365             return R500_TXFORMAT_MSB;
 366         default:
 367             return 0;
 368     }
 369 }
 370
 371 /* Buffer formats. */
 372
 373 /* Colorbuffer formats. This is the unswizzled format of the RB3D block's
 374  * output. For the swizzling of the targets, check the shader's format. */
 375 static uint32_t r300_translate_colorformat(enum pipe_format format)
 376 {
 377     switch (format) {
 378         /* 8-bit buffers. */
 379         case PIPE_FORMAT_A8_UNORM:
 380         /*case PIPE_FORMAT_A8_SNORM:*/
 381         case PIPE_FORMAT_I8_UNORM:
 382         /*case PIPE_FORMAT_I8_SNORM:*/
 383         case PIPE_FORMAT_L8_UNORM:
 384         /*case PIPE_FORMAT_L8_SNORM:*/
 385         case PIPE_FORMAT_R8_UNORM:
 386         case PIPE_FORMAT_R8_SNORM:
 387             return R300_COLOR_FORMAT_I8;
 388
 389         /* 16-bit buffers. */
 390         case PIPE_FORMAT_L8A8_UNORM:
 391         /*case PIPE_FORMAT_L8A8_SNORM:*/
 392         case PIPE_FORMAT_R8G8_UNORM:
 393         case PIPE_FORMAT_R8G8_SNORM:
 394             return R300_COLOR_FORMAT_UV88;
 395
 396         case PIPE_FORMAT_B5G6R5_UNORM:
 397             return R300_COLOR_FORMAT_RGB565;
 398
 399         case PIPE_FORMAT_B5G5R5A1_UNORM:
 400         case PIPE_FORMAT_B5G5R5X1_UNORM:
 401             return R300_COLOR_FORMAT_ARGB1555;
 402
 403         case PIPE_FORMAT_B4G4R4A4_UNORM:
 404         case PIPE_FORMAT_B4G4R4X4_UNORM:
 405             return R300_COLOR_FORMAT_ARGB4444;
 406
 407         /* 32-bit buffers. */
 408         case PIPE_FORMAT_B8G8R8A8_UNORM:
 409         /*case PIPE_FORMAT_B8G8R8A8_SNORM:*/
 410         case PIPE_FORMAT_B8G8R8X8_UNORM:
 411         /*case PIPE_FORMAT_B8G8R8X8_SNORM:*/
 412         case PIPE_FORMAT_A8R8G8B8_UNORM:
 413         /*case PIPE_FORMAT_A8R8G8B8_SNORM:*/
 414         case PIPE_FORMAT_X8R8G8B8_UNORM:
 415         /*case PIPE_FORMAT_X8R8G8B8_SNORM:*/
 416         case PIPE_FORMAT_A8B8G8R8_UNORM:
 417         /*case PIPE_FORMAT_A8B8G8R8_SNORM:*/
 418         case PIPE_FORMAT_R8G8B8A8_UNORM:
 419         case PIPE_FORMAT_R8G8B8A8_SNORM:
 420         case PIPE_FORMAT_X8B8G8R8_UNORM:
 421         /*case PIPE_FORMAT_X8B8G8R8_SNORM:*/
 422         case PIPE_FORMAT_R8G8B8X8_UNORM:
 423         /*case PIPE_FORMAT_R8G8B8X8_SNORM:*/
 424         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 425             return R300_COLOR_FORMAT_ARGB8888;
 426
 427         case PIPE_FORMAT_R10G10B10A2_UNORM:
 428         case PIPE_FORMAT_R10G10B10X2_SNORM:
 429         case PIPE_FORMAT_B10G10R10A2_UNORM:
 430         case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
 431             return R500_COLOR_FORMAT_ARGB2101010;  /* R5xx-only? */
 432
 433         /* 64-bit buffers. */
 434         case PIPE_FORMAT_R16G16B16A16_UNORM:
 435         case PIPE_FORMAT_R16G16B16A16_SNORM:
 436         case PIPE_FORMAT_R16G16B16A16_FLOAT:
 437             return R300_COLOR_FORMAT_ARGB16161616;
 438
 439         /* 128-bit buffers. */
 440         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 441             return R300_COLOR_FORMAT_ARGB32323232;
 442
 443         /* YUV buffers. */
 444         case PIPE_FORMAT_UYVY:
 445             return R300_COLOR_FORMAT_YVYU;
 446         case PIPE_FORMAT_YUYV:
 447             return R300_COLOR_FORMAT_VYUY;
 448         default:
 449             return ~0; /* Unsupported. */
 450     }
 451 }
 452
 453 /* Depthbuffer and stencilbuffer. Thankfully, we only support two flavors. */
 454 static uint32_t r300_translate_zsformat(enum pipe_format format)
 455 {
 456     switch (format) {
 457         /* 16-bit depth, no stencil */
 458         case PIPE_FORMAT_Z16_UNORM:
 459             return R300_DEPTHFORMAT_16BIT_INT_Z;
 460         /* 24-bit depth, ignored stencil */
 461         case PIPE_FORMAT_X8Z24_UNORM:
 462         /* 24-bit depth, 8-bit stencil */
 463         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 464             return R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
 465         default:
 466             return ~0; /* Unsupported. */
 467     }
 468 }
 469
 470 /* Shader output formats. This is essentially the swizzle from the shader
 471  * to the RB3D block.
 472  *
 473  * Note that formats are stored from C3 to C0. */
 474 static uint32_t r300_translate_out_fmt(enum pipe_format format)
 475 {
 476     uint32_t modifier = 0;
 477     unsigned i;
 478     const struct util_format_description *desc;
 479     static const uint32_t sign_bit[4] = {
 480         R300_OUT_SIGN(0x1),
 481         R300_OUT_SIGN(0x2),
 482         R300_OUT_SIGN(0x4),
 483         R300_OUT_SIGN(0x8),
 484     };
 485
 486     desc = util_format_description(format);
 487
 488     /* Find the first non-VOID channel. */
 489     for (i = 0; i < 4; i++) {
 490         if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 491             break;
 492         }
 493     }
 494
 495     if (i == 4)
 496         return ~0; /* Unsupported/unknown. */
 497
 498     /* Specifies how the shader output is written to the fog unit. */
 499     if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT) {
 500         if (desc->channel[i].size == 32) {
 501             modifier |= R300_US_OUT_FMT_C4_32_FP;
 502         } else {
 503             modifier |= R300_US_OUT_FMT_C4_16_FP;
 504         }
 505     } else {
 506         if (desc->channel[i].size == 16) {
 507             modifier |= R300_US_OUT_FMT_C4_16;
 508         } else if (desc->channel[i].size == 10) {
 509             modifier |= R300_US_OUT_FMT_C4_10;
 510         } else {
 511             /* C4_8 seems to be used for the formats whose pixel size
 512              * is <= 32 bits. */
 513             modifier |= R300_US_OUT_FMT_C4_8;
 514         }
 515     }
 516
 517     /* Add sign. */
 518     for (i = 0; i < 4; i++)
 519         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 520             modifier |= sign_bit[i];
 521         }
 522
 523     /* Add swizzles and return. */
 524     switch (format) {
 525         /* 8-bit outputs, one channel.
 526          * COLORFORMAT_I8 stores the C2 component. */
 527         case PIPE_FORMAT_A8_UNORM:
 528         /*case PIPE_FORMAT_A8_SNORM:*/
 529             return modifier | R300_C2_SEL_A;
 530         case PIPE_FORMAT_I8_UNORM:
 531         /*case PIPE_FORMAT_I8_SNORM:*/
 532         case PIPE_FORMAT_L8_UNORM:
 533         /*case PIPE_FORMAT_L8_SNORM:*/
 534         case PIPE_FORMAT_R8_UNORM:
 535         case PIPE_FORMAT_R8_SNORM:
 536             return modifier | R300_C2_SEL_R;
 537
 538         /* 16-bit outputs, two channels.
 539          * COLORFORMAT_UV88 stores C2 and C0. */
 540         case PIPE_FORMAT_L8A8_UNORM:
 541         /*case PIPE_FORMAT_L8A8_SNORM:*/
 542             return modifier | R300_C0_SEL_A | R300_C2_SEL_R;
 543         case PIPE_FORMAT_R8G8_UNORM:
 544         case PIPE_FORMAT_R8G8_SNORM:
 545             return modifier | R300_C0_SEL_G | R300_C2_SEL_R;
 546
 547         /* BGRA outputs. */
 548         case PIPE_FORMAT_B5G6R5_UNORM:
 549         case PIPE_FORMAT_B5G5R5A1_UNORM:
 550         case PIPE_FORMAT_B5G5R5X1_UNORM:
 551         case PIPE_FORMAT_B4G4R4A4_UNORM:
 552         case PIPE_FORMAT_B4G4R4X4_UNORM:
 553         case PIPE_FORMAT_B8G8R8A8_UNORM:
 554         /*case PIPE_FORMAT_B8G8R8A8_SNORM:*/
 555         case PIPE_FORMAT_B8G8R8X8_UNORM:
 556         /*case PIPE_FORMAT_B8G8R8X8_SNORM:*/
 557         case PIPE_FORMAT_B10G10R10A2_UNORM:
 558             return modifier |
 559                 R300_C0_SEL_B | R300_C1_SEL_G |
 560                 R300_C2_SEL_R | R300_C3_SEL_A;
 561
 562         /* ARGB outputs. */
 563         case PIPE_FORMAT_A8R8G8B8_UNORM:
 564         /*case PIPE_FORMAT_A8R8G8B8_SNORM:*/
 565         case PIPE_FORMAT_X8R8G8B8_UNORM:
 566         /*case PIPE_FORMAT_X8R8G8B8_SNORM:*/
 567             return modifier |
 568                 R300_C0_SEL_A | R300_C1_SEL_R |
 569                 R300_C2_SEL_G | R300_C3_SEL_B;
 570
 571         /* ABGR outputs. */
 572         case PIPE_FORMAT_A8B8G8R8_UNORM:
 573         /*case PIPE_FORMAT_A8B8G8R8_SNORM:*/
 574         case PIPE_FORMAT_X8B8G8R8_UNORM:
 575         /*case PIPE_FORMAT_X8B8G8R8_SNORM:*/
 576             return modifier |
 577                 R300_C0_SEL_A | R300_C1_SEL_B |
 578                 R300_C2_SEL_G | R300_C3_SEL_R;
 579
 580         /* RGBA outputs. */
 581         case PIPE_FORMAT_R8G8B8X8_UNORM:
 582         /*case PIPE_FORMAT_R8G8B8X8_SNORM:*/
 583         case PIPE_FORMAT_R8G8B8A8_UNORM:
 584         case PIPE_FORMAT_R8G8B8A8_SNORM:
 585         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 586         case PIPE_FORMAT_R10G10B10A2_UNORM:
 587         case PIPE_FORMAT_R10G10B10X2_SNORM:
 588         case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
 589         case PIPE_FORMAT_R16G16B16A16_UNORM:
 590         case PIPE_FORMAT_R16G16B16A16_SNORM:
 591         case PIPE_FORMAT_R16G16B16A16_FLOAT:
 592         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 593             return modifier |
 594                 R300_C0_SEL_R | R300_C1_SEL_G |
 595                 R300_C2_SEL_B | R300_C3_SEL_A;
 596
 597         default:
 598             return ~0; /* Unsupported. */
 599     }
 600 }
 601
 602 boolean r300_is_colorbuffer_format_supported(enum pipe_format format)
 603 {
 604     return r300_translate_colorformat(format) != ~0 &&
 605            r300_translate_out_fmt(format) != ~0;
 606 }
 607
 608 boolean r300_is_zs_format_supported(enum pipe_format format)
 609 {
 610     return r300_translate_zsformat(format) != ~0;
 611 }
 612
 613 boolean r300_is_sampler_format_supported(enum pipe_format format)
 614 {
 615     return r300_translate_texformat(format, 0, TRUE, FALSE) != ~0;
 616 }
 617
 618 void r300_texture_setup_format_state(struct r300_screen *screen,
 619                                      struct r300_resource *tex,
 620                                      unsigned level,
 621                                      struct r300_texture_format_state *out)
 622 {
 623     struct pipe_resource *pt = &tex->b.b.b;
 624     struct r300_texture_desc *desc = &tex->tex;
 625     boolean is_r500 = screen->caps.is_r500;
 626
 627     /* Mask out all the fields we change. */
 628     out->format0 = 0;
 629     out->format1 &= ~R300_TX_FORMAT_TEX_COORD_TYPE_MASK;
 630     out->format2 &= R500_TXFORMAT_MSB;
 631     out->tile_config = 0;
 632
 633     /* Set sampler state. */
 634     out->format0 =
 635         R300_TX_WIDTH((u_minify(desc->width0, level) - 1) & 0x7ff) |
 636         R300_TX_HEIGHT((u_minify(desc->height0, level) - 1) & 0x7ff) |
 637         R300_TX_DEPTH(util_logbase2(u_minify(desc->depth0, level)) & 0xf);
 638
 639     if (desc->uses_stride_addressing) {
 640         /* rectangles love this */
 641         out->format0 |= R300_TX_PITCH_EN;
 642         out->format2 = (desc->stride_in_pixels[level] - 1) & 0x1fff;
 643     }
 644
 645     if (pt->target == PIPE_TEXTURE_CUBE) {
 646         out->format1 |= R300_TX_FORMAT_CUBIC_MAP;
 647     }
 648     if (pt->target == PIPE_TEXTURE_3D) {
 649         out->format1 |= R300_TX_FORMAT_3D;
 650     }
 651
 652     /* large textures on r500 */
 653     if (is_r500)
 654     {
 655         if (desc->width0 > 2048) {
 656             out->format2 |= R500_TXWIDTH_BIT11;
 657         }
 658         if (desc->height0 > 2048) {
 659             out->format2 |= R500_TXHEIGHT_BIT11;
 660         }
 661     }
 662
 663     out->tile_config = R300_TXO_MACRO_TILE(desc->macrotile[level]) |
 664                        R300_TXO_MICRO_TILE(desc->microtile);
 665 }
 666
 667 static void r300_texture_setup_fb_state(struct r300_surface *surf)
 668 {
 669     struct r300_resource *tex = r300_resource(surf->base.texture);
 670     unsigned level = surf->base.u.tex.level;
 671
 672     /* Set framebuffer state. */
 673     if (util_format_is_depth_or_stencil(surf->base.format)) {
 674         surf->pitch =
 675                 tex->tex.stride_in_pixels[level] |
 676                 R300_DEPTHMACROTILE(tex->tex.macrotile[level]) |
 677                 R300_DEPTHMICROTILE(tex->tex.microtile);
 678         surf->format = r300_translate_zsformat(surf->base.format);
 679         surf->pitch_zmask = tex->tex.zmask_stride_in_pixels[level];
 680         surf->pitch_hiz = tex->tex.hiz_stride_in_pixels[level];
 681     } else {
 682         surf->pitch =
 683                 tex->tex.stride_in_pixels[level] |
 684                 r300_translate_colorformat(surf->base.format) |
 685                 R300_COLOR_TILE(tex->tex.macrotile[level]) |
 686                 R300_COLOR_MICROTILE(tex->tex.microtile);
 687         surf->format = r300_translate_out_fmt(surf->base.format);
 688     }
 689 }
 690
 691 boolean r300_resource_set_properties(struct pipe_screen *screen,
 692                                      struct pipe_resource *tex,
 693                                      unsigned offset,
 694                                      const struct pipe_resource *new_properties)
 695 {
 696     struct r300_screen *rscreen = r300_screen(screen);
 697     struct r300_resource *res = r300_resource(tex);
 698
 699     SCREEN_DBG(rscreen, DBG_TEX,
 700         "r300: texture_set_properties: %s -> %s\n",
 701         util_format_short_name(tex->format),
 702         util_format_short_name(new_properties->format));
 703
 704     if (!r300_texture_desc_init(rscreen, res, new_properties)) {
 705         fprintf(stderr, "r300: ERROR: Cannot set texture properties.\n");
 706         return FALSE;
 707     }
 708     res->tex_offset = offset;
 709     r300_texture_setup_format_state(rscreen, res, 0, &res->tx_format);
 710
 711     return TRUE;
 712 }
 713
 714 static void r300_texture_destroy(struct pipe_screen *screen,
 715                                  struct pipe_resource* texture)
 716 {
 717     struct r300_resource* tex = (struct r300_resource*)texture;
 718
 719     r300_winsys_bo_reference(&tex->buf, NULL);
 720     FREE(tex);
 721 }
 722
 723 boolean r300_resource_get_handle(struct pipe_screen* screen,
 724                                  struct pipe_resource *texture,
 725                                  struct winsys_handle *whandle)
 726 {
 727     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 728     struct r300_resource* tex = (struct r300_resource*)texture;
 729
 730     if (!tex) {
 731         return FALSE;
 732     }
 733
 734     return rws->buffer_get_handle(tex->buf,
 735                                   tex->tex.stride_in_bytes[0], whandle);
 736 }
 737
 738 static const struct u_resource_vtbl r300_texture_vtbl =
 739 {
 740     NULL,                           /* get_handle */
 741     r300_texture_destroy,           /* resource_destroy */
 742     NULL,                           /* is_resource_referenced */
 743     r300_texture_get_transfer,      /* get_transfer */
 744     r300_texture_transfer_destroy,  /* transfer_destroy */
 745     r300_texture_transfer_map,      /* transfer_map */
 746     NULL,                           /* transfer_flush_region */
 747     r300_texture_transfer_unmap,    /* transfer_unmap */
 748     u_default_transfer_inline_write /* transfer_inline_write */
 749 };
 750
 751 /* The common texture constructor. */
 752 static struct r300_resource*
 753 r300_texture_create_object(struct r300_screen *rscreen,
 754                            const struct pipe_resource *base,
 755                            enum r300_buffer_tiling microtile,
 756                            enum r300_buffer_tiling macrotile,
 757                            unsigned stride_in_bytes_override,
 758                            unsigned max_buffer_size,
 759                            struct r300_winsys_bo *buffer)
 760 {
 761     struct r300_winsys_screen *rws = rscreen->rws;
 762     struct r300_resource *tex = CALLOC_STRUCT(r300_resource);
 763     if (!tex) {
 764         if (buffer)
 765             r300_winsys_bo_reference(&buffer, NULL);
 766         return NULL;
 767     }
 768
 769     pipe_reference_init(&tex->b.b.b.reference, 1);
 770     tex->b.b.b.screen = &rscreen->screen;
 771     tex->b.b.b.usage = base->usage;
 772     tex->b.b.b.bind = base->bind;
 773     tex->b.b.b.flags = base->flags;
 774     tex->b.b.vtbl = &r300_texture_vtbl;
 775     tex->tex.microtile = microtile;
 776     tex->tex.macrotile[0] = macrotile;
 777     tex->tex.stride_in_bytes_override = stride_in_bytes_override;
 778     tex->domain = base->flags & R300_RESOURCE_FLAG_TRANSFER ?
 779                   R300_DOMAIN_GTT :
 780                   R300_DOMAIN_VRAM | R300_DOMAIN_GTT;
 781     tex->buf_size = max_buffer_size;
 782
 783     if (!r300_resource_set_properties(&rscreen->screen, &tex->b.b.b, 0, base)) {
 784         if (buffer)
 785             r300_winsys_bo_reference(&buffer, NULL);
 786         FREE(tex);
 787         return NULL;
 788     }
 789
 790     /* Create the backing buffer if needed. */
 791     if (!buffer) {
 792         tex->buf_size = tex->tex.size_in_bytes;
 793         tex->buf = rws->buffer_create(rws, tex->tex.size_in_bytes, 2048,
 794                                          base->bind, base->usage, tex->domain);
 795
 796         if (!tex->buf) {
 797             FREE(tex);
 798             return NULL;
 799         }
 800     } else {
 801         tex->buf = buffer;
 802     }
 803
 804     tex->cs_buf = rws->buffer_get_cs_handle(tex->buf);
 805
 806     rws->buffer_set_tiling(tex->buf, NULL,
 807             tex->tex.microtile, tex->tex.macrotile[0],
 808             tex->tex.stride_in_bytes[0]);
 809
 810     return tex;
 811 }
 812
 813 /* Create a new texture. */
 814 struct pipe_resource *r300_texture_create(struct pipe_screen *screen,
 815                                           const struct pipe_resource *base)
 816 {
 817     struct r300_screen *rscreen = r300_screen(screen);
 818     enum r300_buffer_tiling microtile, macrotile;
 819
 820     if ((base->flags & R300_RESOURCE_FLAG_TRANSFER) ||
 821         (base->bind & PIPE_BIND_SCANOUT)) {
 822         microtile = R300_BUFFER_LINEAR;
 823         macrotile = R300_BUFFER_LINEAR;
 824     } else {
 825         microtile = R300_BUFFER_SELECT_LAYOUT;
 826         macrotile = R300_BUFFER_SELECT_LAYOUT;
 827     }
 828
 829     return (struct pipe_resource*)
 830            r300_texture_create_object(rscreen, base, microtile, macrotile,
 831                                       0, 0, NULL);
 832 }
 833
 834 struct pipe_resource *r300_texture_from_handle(struct pipe_screen *screen,
 835                                                const struct pipe_resource *base,
 836                                                struct winsys_handle *whandle)
 837 {
 838     struct r300_winsys_screen *rws = (struct r300_winsys_screen*)screen->winsys;
 839     struct r300_screen *rscreen = r300_screen(screen);
 840     struct r300_winsys_bo *buffer;
 841     enum r300_buffer_tiling microtile, macrotile;
 842     unsigned stride, size;
 843
 844     /* Support only 2D textures without mipmaps */
 845     if ((base->target != PIPE_TEXTURE_2D &&
 846           base->target != PIPE_TEXTURE_RECT) ||
 847         base->depth0 != 1 ||
 848         base->last_level != 0) {
 849         return NULL;
 850     }
 851
 852     buffer = rws->buffer_from_handle(rws, whandle, &stride, &size);
 853     if (!buffer)
 854         return NULL;
 855
 856     rws->buffer_get_tiling(buffer, &microtile, &macrotile);
 857
 858     /* Enforce a microtiled zbuffer. */
 859     if (util_format_is_depth_or_stencil(base->format) &&
 860         microtile == R300_BUFFER_LINEAR) {
 861         switch (util_format_get_blocksize(base->format)) {
 862             case 4:
 863                 microtile = R300_BUFFER_TILED;
 864                 break;
 865
 866             case 2:
 867                 if (rws->get_value(rws, R300_VID_DRM_2_1_0))
 868                     microtile = R300_BUFFER_SQUARETILED;
 869                 break;
 870         }
 871     }
 872
 873     return (struct pipe_resource*)
 874            r300_texture_create_object(rscreen, base, microtile, macrotile,
 875                                       stride, size, buffer);
 876 }
 877
 878 /* Not required to implement u_resource_vtbl, consider moving to another file:
 879  */
 880 struct pipe_surface* r300_create_surface(struct pipe_context * ctx,
 881                                          struct pipe_resource* texture,
 882                                          const struct pipe_surface *surf_tmpl)
 883 {
 884     struct r300_resource* tex = r300_resource(texture);
 885     struct r300_surface* surface = CALLOC_STRUCT(r300_surface);
 886     unsigned level = surf_tmpl->u.tex.level;
 887
 888     assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 889
 890     if (surface) {
 891         uint32_t offset, tile_height;
 892
 893         pipe_reference_init(&surface->base.reference, 1);
 894         pipe_resource_reference(&surface->base.texture, texture);
 895         surface->base.context = ctx;
 896         surface->base.format = surf_tmpl->format;
 897         surface->base.width = u_minify(texture->width0, level);
 898         surface->base.height = u_minify(texture->height0, level);
 899         surface->base.usage = surf_tmpl->usage;
 900         surface->base.u.tex.level = level;
 901         surface->base.u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 902         surface->base.u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 903
 904         surface->buf = tex->buf;
 905         surface->cs_buf = tex->cs_buf;
 906
 907         /* Prefer VRAM if there are multiple domains to choose from. */
 908         surface->domain = tex->domain;
 909         if (surface->domain & R300_DOMAIN_VRAM)
 910             surface->domain &= ~R300_DOMAIN_GTT;
 911
 912         surface->offset = r300_texture_get_offset(tex, level,
 913                                                   surf_tmpl->u.tex.first_layer);
 914         r300_texture_setup_fb_state(surface);
 915
 916         /* Parameters for the CBZB clear. */
 917         surface->cbzb_allowed = tex->tex.cbzb_allowed[level];
 918         surface->cbzb_width = align(surface->base.width, 64);
 919
 920         /* Height must be aligned to the size of a tile. */
 921         tile_height = r300_get_pixel_alignment(tex->b.b.b.format,
 922                                                tex->b.b.b.nr_samples,
 923                                                tex->tex.microtile,
 924                                                tex->tex.macrotile[level],
 925                                                DIM_HEIGHT, 0);
 926
 927         surface->cbzb_height = align((surface->base.height + 1) / 2,
 928                                      tile_height);
 929
 930         /* Offset must be aligned to 2K and must point at the beginning
 931          * of a scanline. */
 932         offset = surface->offset +
 933                  tex->tex.stride_in_bytes[level] * surface->cbzb_height;
 934         surface->cbzb_midpoint_offset = offset & ~2047;
 935
 936         surface->cbzb_pitch = surface->pitch & 0x1ffffc;
 937
 938         if (util_format_get_blocksizebits(surface->base.format) == 32)
 939             surface->cbzb_format = R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
 940         else
 941             surface->cbzb_format = R300_DEPTHFORMAT_16BIT_INT_Z;
 942
 943         DBG(r300_context(ctx), DBG_CBZB,
 944             "CBZB Allowed: %s, Dim: %ix%i, Misalignment: %i, Micro: %s, Macro: %s\n",
 945             surface->cbzb_allowed ? "YES" : " NO",
 946             surface->cbzb_width, surface->cbzb_height,
 947             offset & 2047,
 948             tex->tex.microtile ? "YES" : " NO",
 949             tex->tex.macrotile[level] ? "YES" : " NO");
 950     }
 951
 952     return &surface->base;
 953 }
 954
 955 /* Not required to implement u_resource_vtbl, consider moving to another file:
 956  */
 957 void r300_surface_destroy(struct pipe_context *ctx, struct pipe_surface* s)
 958 {
 959     pipe_resource_reference(&s->texture, NULL);
 960     FREE(s);
 961 }