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     if (util_format_is_compressed(format) &&
 175         dxtc_swizzle &&
 176         format != PIPE_FORMAT_RGTC2_UNORM &&
 177         format != PIPE_FORMAT_RGTC2_SNORM &&
 178         format != PIPE_FORMAT_LATC2_UNORM &&
 179         format != PIPE_FORMAT_LATC2_SNORM) {
 180         result |= r300_get_swizzle_combined(desc->swizzle, swizzle_view,
 181                                             TRUE);
 182     } else {
 183         result |= r300_get_swizzle_combined(desc->swizzle, swizzle_view,
 184                                             FALSE);
 185     }
 186
 187     /* S3TC formats. */
 188     if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 189         if (!util_format_s3tc_enabled) {
 190             return ~0; /* Unsupported. */
 191         }
 192
 193         switch (format) {
 194             case PIPE_FORMAT_DXT1_RGB:
 195             case PIPE_FORMAT_DXT1_RGBA:
 196             case PIPE_FORMAT_DXT1_SRGB:
 197             case PIPE_FORMAT_DXT1_SRGBA:
 198                 return R300_TX_FORMAT_DXT1 | result;
 199             case PIPE_FORMAT_DXT3_RGBA:
 200             case PIPE_FORMAT_DXT3_SRGBA:
 201                 return R300_TX_FORMAT_DXT3 | result;
 202             case PIPE_FORMAT_DXT5_RGBA:
 203             case PIPE_FORMAT_DXT5_SRGBA:
 204                 return R300_TX_FORMAT_DXT5 | result;
 205             default:
 206                 return ~0; /* Unsupported/unknown. */
 207         }
 208     }
 209
 210     /* RGTC formats. */
 211     if (desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
 212         switch (format) {
 213             case PIPE_FORMAT_RGTC1_SNORM:
 214             case PIPE_FORMAT_LATC1_SNORM:
 215                 result |= sign_bit[1];
 216             case PIPE_FORMAT_LATC1_UNORM:
 217             case PIPE_FORMAT_RGTC1_UNORM:
 218                 return R500_TX_FORMAT_ATI1N | result;
 219
 220             case PIPE_FORMAT_RGTC2_SNORM:
 221             case PIPE_FORMAT_LATC2_SNORM:
 222                 result |= sign_bit[2] | sign_bit[3];
 223             case PIPE_FORMAT_RGTC2_UNORM:
 224             case PIPE_FORMAT_LATC2_UNORM:
 225                 return R400_TX_FORMAT_ATI2N | result;
 226
 227             default:
 228                 return ~0; /* Unsupported/unknown. */
 229         }
 230     }
 231
 232     /* This is truly a special format.
 233      * It stores R8G8 and B is computed using sqrt(1 - R^2 - G^2)
 234      * in the sampler unit. Also known as D3DFMT_CxV8U8. */
 235     if (format == PIPE_FORMAT_R8G8Bx_SNORM) {
 236         return R300_TX_FORMAT_CxV8U8 | result;
 237     }
 238
 239     /* Add sign. */
 240     for (i = 0; i < desc->nr_channels; i++) {
 241         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 242             result |= sign_bit[i];
 243         }
 244     }
 245
 246     /* See whether the components are of the same size. */
 247     for (i = 1; i < desc->nr_channels; i++) {
 248         uniform = uniform && desc->channel[0].size == desc->channel[i].size;
 249     }
 250
 251     /* Non-uniform formats. */
 252     if (!uniform) {
 253         switch (desc->nr_channels) {
 254             case 3:
 255                 if (desc->channel[0].size == 5 &&
 256                     desc->channel[1].size == 6 &&
 257                     desc->channel[2].size == 5) {
 258                     return R300_TX_FORMAT_Z5Y6X5 | result;
 259                 }
 260                 if (desc->channel[0].size == 5 &&
 261                     desc->channel[1].size == 5 &&
 262                     desc->channel[2].size == 6) {
 263                     return R300_TX_FORMAT_Z6Y5X5 | result;
 264                 }
 265                 if (desc->channel[0].size == 2 &&
 266                     desc->channel[1].size == 3 &&
 267                     desc->channel[2].size == 3) {
 268                     return R300_TX_FORMAT_Z3Y3X2 | result;
 269                 }
 270                 return ~0; /* Unsupported/unknown. */
 271
 272             case 4:
 273                 if (desc->channel[0].size == 5 &&
 274                     desc->channel[1].size == 5 &&
 275                     desc->channel[2].size == 5 &&
 276                     desc->channel[3].size == 1) {
 277                     return R300_TX_FORMAT_W1Z5Y5X5 | result;
 278                 }
 279                 if (desc->channel[0].size == 10 &&
 280                     desc->channel[1].size == 10 &&
 281                     desc->channel[2].size == 10 &&
 282                     desc->channel[3].size == 2) {
 283                     return R300_TX_FORMAT_W2Z10Y10X10 | result;
 284                 }
 285         }
 286         return ~0; /* Unsupported/unknown. */
 287     }
 288
 289     /* Find the first non-VOID channel. */
 290     for (i = 0; i < 4; i++) {
 291         if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 292             break;
 293         }
 294     }
 295
 296     if (i == 4)
 297         return ~0; /* Unsupported/unknown. */
 298
 299     /* And finally, uniform formats. */
 300     switch (desc->channel[i].type) {
 301         case UTIL_FORMAT_TYPE_UNSIGNED:
 302         case UTIL_FORMAT_TYPE_SIGNED:
 303             if (!desc->channel[i].normalized &&
 304                 desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
 305                 return ~0;
 306             }
 307
 308             switch (desc->channel[i].size) {
 309                 case 4:
 310                     switch (desc->nr_channels) {
 311                         case 2:
 312                             return R300_TX_FORMAT_Y4X4 | result;
 313                         case 4:
 314                             return R300_TX_FORMAT_W4Z4Y4X4 | result;
 315                     }
 316                     return ~0;
 317
 318                 case 8:
 319                     switch (desc->nr_channels) {
 320                         case 1:
 321                             return R300_TX_FORMAT_X8 | result;
 322                         case 2:
 323                             return R300_TX_FORMAT_Y8X8 | result;
 324                         case 4:
 325                             return R300_TX_FORMAT_W8Z8Y8X8 | result;
 326                     }
 327                     return ~0;
 328
 329                 case 16:
 330                     switch (desc->nr_channels) {
 331                         case 1:
 332                             return R300_TX_FORMAT_X16 | result;
 333                         case 2:
 334                             return R300_TX_FORMAT_Y16X16 | result;
 335                         case 4:
 336                             return R300_TX_FORMAT_W16Z16Y16X16 | result;
 337                     }
 338             }
 339             return ~0;
 340
 341         case UTIL_FORMAT_TYPE_FLOAT:
 342             switch (desc->channel[i].size) {
 343                 case 16:
 344                     switch (desc->nr_channels) {
 345                         case 1:
 346                             return R300_TX_FORMAT_16F | result;
 347                         case 2:
 348                             return R300_TX_FORMAT_16F_16F | result;
 349                         case 4:
 350                             return R300_TX_FORMAT_16F_16F_16F_16F | result;
 351                     }
 352                     return ~0;
 353
 354                 case 32:
 355                     switch (desc->nr_channels) {
 356                         case 1:
 357                             return R300_TX_FORMAT_32F | result;
 358                         case 2:
 359                             return R300_TX_FORMAT_32F_32F | result;
 360                         case 4:
 361                             return R300_TX_FORMAT_32F_32F_32F_32F | result;
 362                     }
 363             }
 364     }
 365
 366     return ~0; /* Unsupported/unknown. */
 367 }
 368
 369 uint32_t r500_tx_format_msb_bit(enum pipe_format format)
 370 {
 371     switch (format) {
 372         case PIPE_FORMAT_RGTC1_UNORM:
 373         case PIPE_FORMAT_RGTC1_SNORM:
 374         case PIPE_FORMAT_LATC1_UNORM:
 375         case PIPE_FORMAT_LATC1_SNORM:
 376         case PIPE_FORMAT_X8Z24_UNORM:
 377         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 378             return R500_TXFORMAT_MSB;
 379         default:
 380             return 0;
 381     }
 382 }
 383
 384 /* Buffer formats. */
 385
 386 /* Colorbuffer formats. This is the unswizzled format of the RB3D block's
 387  * output. For the swizzling of the targets, check the shader's format. */
 388 static uint32_t r300_translate_colorformat(enum pipe_format format)
 389 {
 390     switch (format) {
 391         /* 8-bit buffers. */
 392         case PIPE_FORMAT_A8_UNORM:
 393         /*case PIPE_FORMAT_A8_SNORM:*/
 394         case PIPE_FORMAT_I8_UNORM:
 395         /*case PIPE_FORMAT_I8_SNORM:*/
 396         case PIPE_FORMAT_L8_UNORM:
 397         /*case PIPE_FORMAT_L8_SNORM:*/
 398         case PIPE_FORMAT_R8_UNORM:
 399         case PIPE_FORMAT_R8_SNORM:
 400             return R300_COLOR_FORMAT_I8;
 401
 402         /* 16-bit buffers. */
 403         case PIPE_FORMAT_L8A8_UNORM:
 404         /*case PIPE_FORMAT_L8A8_SNORM:*/
 405         case PIPE_FORMAT_R8G8_UNORM:
 406         case PIPE_FORMAT_R8G8_SNORM:
 407             return R300_COLOR_FORMAT_UV88;
 408
 409         case PIPE_FORMAT_B5G6R5_UNORM:
 410             return R300_COLOR_FORMAT_RGB565;
 411
 412         case PIPE_FORMAT_B5G5R5A1_UNORM:
 413         case PIPE_FORMAT_B5G5R5X1_UNORM:
 414             return R300_COLOR_FORMAT_ARGB1555;
 415
 416         case PIPE_FORMAT_B4G4R4A4_UNORM:
 417         case PIPE_FORMAT_B4G4R4X4_UNORM:
 418             return R300_COLOR_FORMAT_ARGB4444;
 419
 420         /* 32-bit buffers. */
 421         case PIPE_FORMAT_B8G8R8A8_UNORM:
 422         /*case PIPE_FORMAT_B8G8R8A8_SNORM:*/
 423         case PIPE_FORMAT_B8G8R8X8_UNORM:
 424         /*case PIPE_FORMAT_B8G8R8X8_SNORM:*/
 425         case PIPE_FORMAT_A8R8G8B8_UNORM:
 426         /*case PIPE_FORMAT_A8R8G8B8_SNORM:*/
 427         case PIPE_FORMAT_X8R8G8B8_UNORM:
 428         /*case PIPE_FORMAT_X8R8G8B8_SNORM:*/
 429         case PIPE_FORMAT_A8B8G8R8_UNORM:
 430         /*case PIPE_FORMAT_A8B8G8R8_SNORM:*/
 431         case PIPE_FORMAT_R8G8B8A8_UNORM:
 432         case PIPE_FORMAT_R8G8B8A8_SNORM:
 433         case PIPE_FORMAT_X8B8G8R8_UNORM:
 434         /*case PIPE_FORMAT_X8B8G8R8_SNORM:*/
 435         case PIPE_FORMAT_R8G8B8X8_UNORM:
 436         /*case PIPE_FORMAT_R8G8B8X8_SNORM:*/
 437         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 438             return R300_COLOR_FORMAT_ARGB8888;
 439
 440         case PIPE_FORMAT_R10G10B10A2_UNORM:
 441         case PIPE_FORMAT_R10G10B10X2_SNORM:
 442         case PIPE_FORMAT_B10G10R10A2_UNORM:
 443         case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
 444             return R500_COLOR_FORMAT_ARGB2101010;  /* R5xx-only? */
 445
 446         /* 64-bit buffers. */
 447         case PIPE_FORMAT_R16G16B16A16_UNORM:
 448         case PIPE_FORMAT_R16G16B16A16_SNORM:
 449         case PIPE_FORMAT_R16G16B16A16_FLOAT:
 450             return R300_COLOR_FORMAT_ARGB16161616;
 451
 452         /* 128-bit buffers. */
 453         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 454             return R300_COLOR_FORMAT_ARGB32323232;
 455
 456         /* YUV buffers. */
 457         case PIPE_FORMAT_UYVY:
 458             return R300_COLOR_FORMAT_YVYU;
 459         case PIPE_FORMAT_YUYV:
 460             return R300_COLOR_FORMAT_VYUY;
 461         default:
 462             return ~0; /* Unsupported. */
 463     }
 464 }
 465
 466 /* Depthbuffer and stencilbuffer. Thankfully, we only support two flavors. */
 467 static uint32_t r300_translate_zsformat(enum pipe_format format)
 468 {
 469     switch (format) {
 470         /* 16-bit depth, no stencil */
 471         case PIPE_FORMAT_Z16_UNORM:
 472             return R300_DEPTHFORMAT_16BIT_INT_Z;
 473         /* 24-bit depth, ignored stencil */
 474         case PIPE_FORMAT_X8Z24_UNORM:
 475         /* 24-bit depth, 8-bit stencil */
 476         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 477             return R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
 478         default:
 479             return ~0; /* Unsupported. */
 480     }
 481 }
 482
 483 /* Shader output formats. This is essentially the swizzle from the shader
 484  * to the RB3D block.
 485  *
 486  * Note that formats are stored from C3 to C0. */
 487 static uint32_t r300_translate_out_fmt(enum pipe_format format)
 488 {
 489     uint32_t modifier = 0;
 490     unsigned i;
 491     const struct util_format_description *desc;
 492     static const uint32_t sign_bit[4] = {
 493         R300_OUT_SIGN(0x1),
 494         R300_OUT_SIGN(0x2),
 495         R300_OUT_SIGN(0x4),
 496         R300_OUT_SIGN(0x8),
 497     };
 498
 499     desc = util_format_description(format);
 500
 501     /* Find the first non-VOID channel. */
 502     for (i = 0; i < 4; i++) {
 503         if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 504             break;
 505         }
 506     }
 507
 508     if (i == 4)
 509         return ~0; /* Unsupported/unknown. */
 510
 511     /* Specifies how the shader output is written to the fog unit. */
 512     if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT) {
 513         if (desc->channel[i].size == 32) {
 514             modifier |= R300_US_OUT_FMT_C4_32_FP;
 515         } else {
 516             modifier |= R300_US_OUT_FMT_C4_16_FP;
 517         }
 518     } else {
 519         if (desc->channel[i].size == 16) {
 520             modifier |= R300_US_OUT_FMT_C4_16;
 521         } else if (desc->channel[i].size == 10) {
 522             modifier |= R300_US_OUT_FMT_C4_10;
 523         } else {
 524             /* C4_8 seems to be used for the formats whose pixel size
 525              * is <= 32 bits. */
 526             modifier |= R300_US_OUT_FMT_C4_8;
 527         }
 528     }
 529
 530     /* Add sign. */
 531     for (i = 0; i < 4; i++)
 532         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 533             modifier |= sign_bit[i];
 534         }
 535
 536     /* Add swizzles and return. */
 537     switch (format) {
 538         /* 8-bit outputs, one channel.
 539          * COLORFORMAT_I8 stores the C2 component. */
 540         case PIPE_FORMAT_A8_UNORM:
 541         /*case PIPE_FORMAT_A8_SNORM:*/
 542             return modifier | R300_C2_SEL_A;
 543         case PIPE_FORMAT_I8_UNORM:
 544         /*case PIPE_FORMAT_I8_SNORM:*/
 545         case PIPE_FORMAT_L8_UNORM:
 546         /*case PIPE_FORMAT_L8_SNORM:*/
 547         case PIPE_FORMAT_R8_UNORM:
 548         case PIPE_FORMAT_R8_SNORM:
 549             return modifier | R300_C2_SEL_R;
 550
 551         /* 16-bit outputs, two channels.
 552          * COLORFORMAT_UV88 stores C2 and C0. */
 553         case PIPE_FORMAT_L8A8_UNORM:
 554         /*case PIPE_FORMAT_L8A8_SNORM:*/
 555             return modifier | R300_C0_SEL_A | R300_C2_SEL_R;
 556         case PIPE_FORMAT_R8G8_UNORM:
 557         case PIPE_FORMAT_R8G8_SNORM:
 558             return modifier | R300_C0_SEL_G | R300_C2_SEL_R;
 559
 560         /* BGRA outputs. */
 561         case PIPE_FORMAT_B5G6R5_UNORM:
 562         case PIPE_FORMAT_B5G5R5A1_UNORM:
 563         case PIPE_FORMAT_B5G5R5X1_UNORM:
 564         case PIPE_FORMAT_B4G4R4A4_UNORM:
 565         case PIPE_FORMAT_B4G4R4X4_UNORM:
 566         case PIPE_FORMAT_B8G8R8A8_UNORM:
 567         /*case PIPE_FORMAT_B8G8R8A8_SNORM:*/
 568         case PIPE_FORMAT_B8G8R8X8_UNORM:
 569         /*case PIPE_FORMAT_B8G8R8X8_SNORM:*/
 570         case PIPE_FORMAT_B10G10R10A2_UNORM:
 571             return modifier |
 572                 R300_C0_SEL_B | R300_C1_SEL_G |
 573                 R300_C2_SEL_R | R300_C3_SEL_A;
 574
 575         /* ARGB outputs. */
 576         case PIPE_FORMAT_A8R8G8B8_UNORM:
 577         /*case PIPE_FORMAT_A8R8G8B8_SNORM:*/
 578         case PIPE_FORMAT_X8R8G8B8_UNORM:
 579         /*case PIPE_FORMAT_X8R8G8B8_SNORM:*/
 580             return modifier |
 581                 R300_C0_SEL_A | R300_C1_SEL_R |
 582                 R300_C2_SEL_G | R300_C3_SEL_B;
 583
 584         /* ABGR outputs. */
 585         case PIPE_FORMAT_A8B8G8R8_UNORM:
 586         /*case PIPE_FORMAT_A8B8G8R8_SNORM:*/
 587         case PIPE_FORMAT_X8B8G8R8_UNORM:
 588         /*case PIPE_FORMAT_X8B8G8R8_SNORM:*/
 589             return modifier |
 590                 R300_C0_SEL_A | R300_C1_SEL_B |
 591                 R300_C2_SEL_G | R300_C3_SEL_R;
 592
 593         /* RGBA outputs. */
 594         case PIPE_FORMAT_R8G8B8X8_UNORM:
 595         /*case PIPE_FORMAT_R8G8B8X8_SNORM:*/
 596         case PIPE_FORMAT_R8G8B8A8_UNORM:
 597         case PIPE_FORMAT_R8G8B8A8_SNORM:
 598         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 599         case PIPE_FORMAT_R10G10B10A2_UNORM:
 600         case PIPE_FORMAT_R10G10B10X2_SNORM:
 601         case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
 602         case PIPE_FORMAT_R16G16B16A16_UNORM:
 603         case PIPE_FORMAT_R16G16B16A16_SNORM:
 604         case PIPE_FORMAT_R16G16B16A16_FLOAT:
 605         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 606             return modifier |
 607                 R300_C0_SEL_R | R300_C1_SEL_G |
 608                 R300_C2_SEL_B | R300_C3_SEL_A;
 609
 610         default:
 611             return ~0; /* Unsupported. */
 612     }
 613 }
 614
 615 boolean r300_is_colorbuffer_format_supported(enum pipe_format format)
 616 {
 617     return r300_translate_colorformat(format) != ~0 &&
 618            r300_translate_out_fmt(format) != ~0;
 619 }
 620
 621 boolean r300_is_zs_format_supported(enum pipe_format format)
 622 {
 623     return r300_translate_zsformat(format) != ~0;
 624 }
 625
 626 boolean r300_is_sampler_format_supported(enum pipe_format format)
 627 {
 628     return r300_translate_texformat(format, 0, TRUE, FALSE) != ~0;
 629 }
 630
 631 void r300_texture_setup_format_state(struct r300_screen *screen,
 632                                      struct r300_resource *tex,
 633                                      unsigned level,
 634                                      struct r300_texture_format_state *out)
 635 {
 636     struct pipe_resource *pt = &tex->b.b.b;
 637     struct r300_texture_desc *desc = &tex->tex;
 638     boolean is_r500 = screen->caps.is_r500;
 639
 640     /* Mask out all the fields we change. */
 641     out->format0 = 0;
 642     out->format1 &= ~R300_TX_FORMAT_TEX_COORD_TYPE_MASK;
 643     out->format2 &= R500_TXFORMAT_MSB;
 644     out->tile_config = 0;
 645
 646     /* Set sampler state. */
 647     out->format0 =
 648         R300_TX_WIDTH((u_minify(desc->width0, level) - 1) & 0x7ff) |
 649         R300_TX_HEIGHT((u_minify(desc->height0, level) - 1) & 0x7ff) |
 650         R300_TX_DEPTH(util_logbase2(u_minify(desc->depth0, level)) & 0xf);
 651
 652     if (desc->uses_stride_addressing) {
 653         /* rectangles love this */
 654         out->format0 |= R300_TX_PITCH_EN;
 655         out->format2 = (desc->stride_in_pixels[level] - 1) & 0x1fff;
 656     }
 657
 658     if (pt->target == PIPE_TEXTURE_CUBE) {
 659         out->format1 |= R300_TX_FORMAT_CUBIC_MAP;
 660     }
 661     if (pt->target == PIPE_TEXTURE_3D) {
 662         out->format1 |= R300_TX_FORMAT_3D;
 663     }
 664
 665     /* large textures on r500 */
 666     if (is_r500)
 667     {
 668         if (desc->width0 > 2048) {
 669             out->format2 |= R500_TXWIDTH_BIT11;
 670         }
 671         if (desc->height0 > 2048) {
 672             out->format2 |= R500_TXHEIGHT_BIT11;
 673         }
 674     }
 675
 676     out->tile_config = R300_TXO_MACRO_TILE(desc->macrotile[level]) |
 677                        R300_TXO_MICRO_TILE(desc->microtile);
 678 }
 679
 680 static void r300_texture_setup_fb_state(struct r300_surface *surf)
 681 {
 682     struct r300_resource *tex = r300_resource(surf->base.texture);
 683     unsigned level = surf->base.u.tex.level;
 684
 685     /* Set framebuffer state. */
 686     if (util_format_is_depth_or_stencil(surf->base.format)) {
 687         surf->pitch =
 688                 tex->tex.stride_in_pixels[level] |
 689                 R300_DEPTHMACROTILE(tex->tex.macrotile[level]) |
 690                 R300_DEPTHMICROTILE(tex->tex.microtile);
 691         surf->format = r300_translate_zsformat(surf->base.format);
 692         surf->pitch_zmask = tex->tex.zmask_stride_in_pixels[level];
 693         surf->pitch_hiz = tex->tex.hiz_stride_in_pixels[level];
 694     } else {
 695         surf->pitch =
 696                 tex->tex.stride_in_pixels[level] |
 697                 r300_translate_colorformat(surf->base.format) |
 698                 R300_COLOR_TILE(tex->tex.macrotile[level]) |
 699                 R300_COLOR_MICROTILE(tex->tex.microtile);
 700         surf->format = r300_translate_out_fmt(surf->base.format);
 701     }
 702 }
 703
 704 boolean r300_resource_set_properties(struct pipe_screen *screen,
 705                                      struct pipe_resource *tex,
 706                                      unsigned offset,
 707                                      const struct pipe_resource *new_properties)
 708 {
 709     struct r300_screen *rscreen = r300_screen(screen);
 710     struct r300_resource *res = r300_resource(tex);
 711
 712     SCREEN_DBG(rscreen, DBG_TEX,
 713         "r300: texture_set_properties: %s -> %s\n",
 714         util_format_short_name(tex->format),
 715         util_format_short_name(new_properties->format));
 716
 717     if (!r300_texture_desc_init(rscreen, res, new_properties)) {
 718         fprintf(stderr, "r300: ERROR: Cannot set texture properties.\n");
 719         return FALSE;
 720     }
 721     res->tex_offset = offset;
 722     r300_texture_setup_format_state(rscreen, res, 0, &res->tx_format);
 723
 724     return TRUE;
 725 }
 726
 727 static void r300_texture_destroy(struct pipe_screen *screen,
 728                                  struct pipe_resource* texture)
 729 {
 730     struct r300_resource* tex = (struct r300_resource*)texture;
 731
 732     r300_winsys_bo_reference(&tex->buf, NULL);
 733     FREE(tex);
 734 }
 735
 736 boolean r300_resource_get_handle(struct pipe_screen* screen,
 737                                  struct pipe_resource *texture,
 738                                  struct winsys_handle *whandle)
 739 {
 740     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 741     struct r300_resource* tex = (struct r300_resource*)texture;
 742
 743     if (!tex) {
 744         return FALSE;
 745     }
 746
 747     return rws->buffer_get_handle(tex->buf,
 748                                   tex->tex.stride_in_bytes[0], whandle);
 749 }
 750
 751 static const struct u_resource_vtbl r300_texture_vtbl =
 752 {
 753     NULL,                           /* get_handle */
 754     r300_texture_destroy,           /* resource_destroy */
 755     NULL,                           /* is_resource_referenced */
 756     r300_texture_get_transfer,      /* get_transfer */
 757     r300_texture_transfer_destroy,  /* transfer_destroy */
 758     r300_texture_transfer_map,      /* transfer_map */
 759     NULL,                           /* transfer_flush_region */
 760     r300_texture_transfer_unmap,    /* transfer_unmap */
 761     u_default_transfer_inline_write /* transfer_inline_write */
 762 };
 763
 764 /* The common texture constructor. */
 765 static struct r300_resource*
 766 r300_texture_create_object(struct r300_screen *rscreen,
 767                            const struct pipe_resource *base,
 768                            enum r300_buffer_tiling microtile,
 769                            enum r300_buffer_tiling macrotile,
 770                            unsigned stride_in_bytes_override,
 771                            unsigned max_buffer_size,
 772                            struct r300_winsys_bo *buffer)
 773 {
 774     struct r300_winsys_screen *rws = rscreen->rws;
 775     struct r300_resource *tex = CALLOC_STRUCT(r300_resource);
 776     if (!tex) {
 777         if (buffer)
 778             r300_winsys_bo_reference(&buffer, NULL);
 779         return NULL;
 780     }
 781
 782     pipe_reference_init(&tex->b.b.b.reference, 1);
 783     tex->b.b.b.screen = &rscreen->screen;
 784     tex->b.b.b.usage = base->usage;
 785     tex->b.b.b.bind = base->bind;
 786     tex->b.b.b.flags = base->flags;
 787     tex->b.b.vtbl = &r300_texture_vtbl;
 788     tex->tex.microtile = microtile;
 789     tex->tex.macrotile[0] = macrotile;
 790     tex->tex.stride_in_bytes_override = stride_in_bytes_override;
 791     tex->domain = base->flags & R300_RESOURCE_FLAG_TRANSFER ?
 792                   R300_DOMAIN_GTT :
 793                   R300_DOMAIN_VRAM | R300_DOMAIN_GTT;
 794     tex->buf_size = max_buffer_size;
 795
 796     if (!r300_resource_set_properties(&rscreen->screen, &tex->b.b.b, 0, base)) {
 797         if (buffer)
 798             r300_winsys_bo_reference(&buffer, NULL);
 799         FREE(tex);
 800         return NULL;
 801     }
 802
 803     /* Create the backing buffer if needed. */
 804     if (!buffer) {
 805         tex->buf_size = tex->tex.size_in_bytes;
 806         tex->buf = rws->buffer_create(rws, tex->tex.size_in_bytes, 2048,
 807                                          base->bind, base->usage, tex->domain);
 808
 809         if (!tex->buf) {
 810             FREE(tex);
 811             return NULL;
 812         }
 813     } else {
 814         tex->buf = buffer;
 815     }
 816
 817     tex->cs_buf = rws->buffer_get_cs_handle(tex->buf);
 818
 819     rws->buffer_set_tiling(tex->buf, NULL,
 820             tex->tex.microtile, tex->tex.macrotile[0],
 821             tex->tex.stride_in_bytes[0]);
 822
 823     return tex;
 824 }
 825
 826 /* Create a new texture. */
 827 struct pipe_resource *r300_texture_create(struct pipe_screen *screen,
 828                                           const struct pipe_resource *base)
 829 {
 830     struct r300_screen *rscreen = r300_screen(screen);
 831     enum r300_buffer_tiling microtile, macrotile;
 832
 833     if ((base->flags & R300_RESOURCE_FLAG_TRANSFER) ||
 834         (base->bind & PIPE_BIND_SCANOUT)) {
 835         microtile = R300_BUFFER_LINEAR;
 836         macrotile = R300_BUFFER_LINEAR;
 837     } else {
 838         microtile = R300_BUFFER_SELECT_LAYOUT;
 839         macrotile = R300_BUFFER_SELECT_LAYOUT;
 840     }
 841
 842     return (struct pipe_resource*)
 843            r300_texture_create_object(rscreen, base, microtile, macrotile,
 844                                       0, 0, NULL);
 845 }
 846
 847 struct pipe_resource *r300_texture_from_handle(struct pipe_screen *screen,
 848                                                const struct pipe_resource *base,
 849                                                struct winsys_handle *whandle)
 850 {
 851     struct r300_winsys_screen *rws = (struct r300_winsys_screen*)screen->winsys;
 852     struct r300_screen *rscreen = r300_screen(screen);
 853     struct r300_winsys_bo *buffer;
 854     enum r300_buffer_tiling microtile, macrotile;
 855     unsigned stride, size;
 856
 857     /* Support only 2D textures without mipmaps */
 858     if ((base->target != PIPE_TEXTURE_2D &&
 859           base->target != PIPE_TEXTURE_RECT) ||
 860         base->depth0 != 1 ||
 861         base->last_level != 0) {
 862         return NULL;
 863     }
 864
 865     buffer = rws->buffer_from_handle(rws, whandle, &stride, &size);
 866     if (!buffer)
 867         return NULL;
 868
 869     rws->buffer_get_tiling(buffer, &microtile, &macrotile);
 870
 871     /* Enforce a microtiled zbuffer. */
 872     if (util_format_is_depth_or_stencil(base->format) &&
 873         microtile == R300_BUFFER_LINEAR) {
 874         switch (util_format_get_blocksize(base->format)) {
 875             case 4:
 876                 microtile = R300_BUFFER_TILED;
 877                 break;
 878
 879             case 2:
 880                 microtile = R300_BUFFER_SQUARETILED;
 881                 break;
 882         }
 883     }
 884
 885     return (struct pipe_resource*)
 886            r300_texture_create_object(rscreen, base, microtile, macrotile,
 887                                       stride, size, buffer);
 888 }
 889
 890 /* Not required to implement u_resource_vtbl, consider moving to another file:
 891  */
 892 struct pipe_surface* r300_create_surface(struct pipe_context * ctx,
 893                                          struct pipe_resource* texture,
 894                                          const struct pipe_surface *surf_tmpl)
 895 {
 896     struct r300_resource* tex = r300_resource(texture);
 897     struct r300_surface* surface = CALLOC_STRUCT(r300_surface);
 898     unsigned level = surf_tmpl->u.tex.level;
 899
 900     assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 901
 902     if (surface) {
 903         uint32_t offset, tile_height;
 904
 905         pipe_reference_init(&surface->base.reference, 1);
 906         pipe_resource_reference(&surface->base.texture, texture);
 907         surface->base.context = ctx;
 908         surface->base.format = surf_tmpl->format;
 909         surface->base.width = u_minify(texture->width0, level);
 910         surface->base.height = u_minify(texture->height0, level);
 911         surface->base.usage = surf_tmpl->usage;
 912         surface->base.u.tex.level = level;
 913         surface->base.u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 914         surface->base.u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 915
 916         surface->buf = tex->buf;
 917         surface->cs_buf = tex->cs_buf;
 918
 919         /* Prefer VRAM if there are multiple domains to choose from. */
 920         surface->domain = tex->domain;
 921         if (surface->domain & R300_DOMAIN_VRAM)
 922             surface->domain &= ~R300_DOMAIN_GTT;
 923
 924         surface->offset = r300_texture_get_offset(tex, level,
 925                                                   surf_tmpl->u.tex.first_layer);
 926         r300_texture_setup_fb_state(surface);
 927
 928         /* Parameters for the CBZB clear. */
 929         surface->cbzb_allowed = tex->tex.cbzb_allowed[level];
 930         surface->cbzb_width = align(surface->base.width, 64);
 931
 932         /* Height must be aligned to the size of a tile. */
 933         tile_height = r300_get_pixel_alignment(tex->b.b.b.format,
 934                                                tex->b.b.b.nr_samples,
 935                                                tex->tex.microtile,
 936                                                tex->tex.macrotile[level],
 937                                                DIM_HEIGHT, 0);
 938
 939         surface->cbzb_height = align((surface->base.height + 1) / 2,
 940                                      tile_height);
 941
 942         /* Offset must be aligned to 2K and must point at the beginning
 943          * of a scanline. */
 944         offset = surface->offset +
 945                  tex->tex.stride_in_bytes[level] * surface->cbzb_height;
 946         surface->cbzb_midpoint_offset = offset & ~2047;
 947
 948         surface->cbzb_pitch = surface->pitch & 0x1ffffc;
 949
 950         if (util_format_get_blocksizebits(surface->base.format) == 32)
 951             surface->cbzb_format = R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
 952         else
 953             surface->cbzb_format = R300_DEPTHFORMAT_16BIT_INT_Z;
 954
 955         DBG(r300_context(ctx), DBG_CBZB,
 956             "CBZB Allowed: %s, Dim: %ix%i, Misalignment: %i, Micro: %s, Macro: %s\n",
 957             surface->cbzb_allowed ? "YES" : " NO",
 958             surface->cbzb_width, surface->cbzb_height,
 959             offset & 2047,
 960             tex->tex.microtile ? "YES" : " NO",
 961             tex->tex.macrotile[level] ? "YES" : " NO");
 962     }
 963
 964     return &surface->base;
 965 }
 966
 967 /* Not required to implement u_resource_vtbl, consider moving to another file:
 968  */
 969 void r300_surface_destroy(struct pipe_context *ctx, struct pipe_surface* s)
 970 {
 971     pipe_resource_reference(&s->texture, NULL);
 972     FREE(s);
 973 }