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 {
  45     unsigned i;
  46     unsigned char swizzle[4];
  47     unsigned result = 0;
  48     const uint32_t swizzle_shift[4] = {
  49         R300_TX_FORMAT_R_SHIFT,
  50         R300_TX_FORMAT_G_SHIFT,
  51         R300_TX_FORMAT_B_SHIFT,
  52         R300_TX_FORMAT_A_SHIFT
  53     };
  54     const uint32_t swizzle_bit[4] = {
  55         R300_TX_FORMAT_X,
  56         R300_TX_FORMAT_Y,
  57         R300_TX_FORMAT_Z,
  58         R300_TX_FORMAT_W
  59     };
  60
  61     if (swizzle_view) {
  62         /* Combine two sets of swizzles. */
  63         for (i = 0; i < 4; i++) {
  64             swizzle[i] = swizzle_view[i] <= UTIL_FORMAT_SWIZZLE_W ?
  65                          swizzle_format[swizzle_view[i]] : swizzle_view[i];
  66         }
  67     } else {
  68         memcpy(swizzle, swizzle_format, 4);
  69     }
  70
  71     /* Get swizzle. */
  72     for (i = 0; i < 4; i++) {
  73         switch (swizzle[i]) {
  74             case UTIL_FORMAT_SWIZZLE_Y:
  75                 result |= swizzle_bit[1] << swizzle_shift[i];
  76                 break;
  77             case UTIL_FORMAT_SWIZZLE_Z:
  78                 result |= swizzle_bit[2] << swizzle_shift[i];
  79                 break;
  80             case UTIL_FORMAT_SWIZZLE_W:
  81                 result |= swizzle_bit[3] << swizzle_shift[i];
  82                 break;
  83             case UTIL_FORMAT_SWIZZLE_0:
  84                 result |= R300_TX_FORMAT_ZERO << swizzle_shift[i];
  85                 break;
  86             case UTIL_FORMAT_SWIZZLE_1:
  87                 result |= R300_TX_FORMAT_ONE << swizzle_shift[i];
  88                 break;
  89             default: /* UTIL_FORMAT_SWIZZLE_X */
  90                 result |= swizzle_bit[0] << swizzle_shift[i];
  91         }
  92     }
  93     return result;
  94 }
  95
  96 /* Translate a pipe_format into a useful texture format for sampling.
  97  *
  98  * Some special formats are translated directly using R300_EASY_TX_FORMAT,
  99  * but the majority of them is translated in a generic way, automatically
 100  * supporting all the formats hw can support.
 101  *
 102  * R300_EASY_TX_FORMAT swizzles the texture.
 103  * Note the signature of R300_EASY_TX_FORMAT:
 104  *   R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
 105  *
 106  * The FORMAT specifies how the texture sampler will treat the texture, and
 107  * makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
 108 uint32_t r300_translate_texformat(enum pipe_format format,
 109                                   const unsigned char *swizzle_view,
 110                                   boolean is_r500)
 111 {
 112     uint32_t result = 0;
 113     const struct util_format_description *desc;
 114     unsigned i;
 115     boolean uniform = TRUE;
 116     const uint32_t sign_bit[4] = {
 117         R300_TX_FORMAT_SIGNED_X,
 118         R300_TX_FORMAT_SIGNED_Y,
 119         R300_TX_FORMAT_SIGNED_Z,
 120         R300_TX_FORMAT_SIGNED_W,
 121     };
 122
 123     desc = util_format_description(format);
 124
 125     /* Colorspace (return non-RGB formats directly). */
 126     switch (desc->colorspace) {
 127         /* Depth stencil formats.
 128          * Swizzles are added in r300_merge_textures_and_samplers. */
 129         case UTIL_FORMAT_COLORSPACE_ZS:
 130             switch (format) {
 131                 case PIPE_FORMAT_Z16_UNORM:
 132                     return R300_TX_FORMAT_X16;
 133                 case PIPE_FORMAT_X8Z24_UNORM:
 134                 case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 135                     if (is_r500)
 136                         return R500_TX_FORMAT_Y8X24;
 137                     else
 138                         return R300_TX_FORMAT_Y16X16;
 139                 default:
 140                     return ~0; /* Unsupported. */
 141             }
 142
 143         /* YUV formats. */
 144         case UTIL_FORMAT_COLORSPACE_YUV:
 145             result |= R300_TX_FORMAT_YUV_TO_RGB;
 146
 147             switch (format) {
 148                 case PIPE_FORMAT_UYVY:
 149                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
 150                 case PIPE_FORMAT_YUYV:
 151                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
 152                 default:
 153                     return ~0; /* Unsupported/unknown. */
 154             }
 155
 156         /* Add gamma correction. */
 157         case UTIL_FORMAT_COLORSPACE_SRGB:
 158             result |= R300_TX_FORMAT_GAMMA;
 159             break;
 160
 161         default:
 162             switch (format) {
 163                 /* Same as YUV but without the YUR->RGB conversion. */
 164                 case PIPE_FORMAT_R8G8_B8G8_UNORM:
 165                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
 166                 case PIPE_FORMAT_G8R8_G8B8_UNORM:
 167                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
 168                 default:;
 169             }
 170     }
 171
 172     result |= r300_get_swizzle_combined(desc->swizzle, swizzle_view);
 173
 174     /* S3TC formats. */
 175     if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 176         if (!util_format_s3tc_enabled) {
 177             return ~0; /* Unsupported. */
 178         }
 179
 180         switch (format) {
 181             case PIPE_FORMAT_DXT1_RGB:
 182             case PIPE_FORMAT_DXT1_RGBA:
 183             case PIPE_FORMAT_DXT1_SRGB:
 184             case PIPE_FORMAT_DXT1_SRGBA:
 185                 return R300_TX_FORMAT_DXT1 | result;
 186             case PIPE_FORMAT_DXT3_RGBA:
 187             case PIPE_FORMAT_DXT3_SRGBA:
 188                 return R300_TX_FORMAT_DXT3 | result;
 189             case PIPE_FORMAT_DXT5_RGBA:
 190             case PIPE_FORMAT_DXT5_SRGBA:
 191                 return R300_TX_FORMAT_DXT5 | result;
 192             default:
 193                 return ~0; /* Unsupported/unknown. */
 194         }
 195     }
 196
 197     /* Add sign. */
 198     for (i = 0; i < desc->nr_channels; i++) {
 199         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 200             result |= sign_bit[i];
 201         }
 202     }
 203
 204     /* This is truly a special format.
 205      * It stores R8G8 and B is computed using sqrt(1 - R^2 - G^2)
 206      * in the sampler unit. Also known as D3DFMT_CxV8U8. */
 207     if (format == PIPE_FORMAT_R8G8Bx_SNORM) {
 208         return R300_TX_FORMAT_CxV8U8 | result;
 209     }
 210
 211     /* RGTC formats. */
 212     if (desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
 213         switch (format) {
 214             case PIPE_FORMAT_RGTC1_UNORM:
 215             case PIPE_FORMAT_RGTC1_SNORM:
 216                 return R500_TX_FORMAT_ATI1N | result;
 217             case PIPE_FORMAT_RGTC2_UNORM:
 218             case PIPE_FORMAT_RGTC2_SNORM:
 219                 return R400_TX_FORMAT_ATI2N | result;
 220             default:
 221                 return ~0; /* Unsupported/unknown. */
 222         }
 223     }
 224
 225     /* See whether the components are of the same size. */
 226     for (i = 1; i < desc->nr_channels; i++) {
 227         uniform = uniform && desc->channel[0].size == desc->channel[i].size;
 228     }
 229
 230     /* Non-uniform formats. */
 231     if (!uniform) {
 232         switch (desc->nr_channels) {
 233             case 3:
 234                 if (desc->channel[0].size == 5 &&
 235                     desc->channel[1].size == 6 &&
 236                     desc->channel[2].size == 5) {
 237                     return R300_TX_FORMAT_Z5Y6X5 | result;
 238                 }
 239                 if (desc->channel[0].size == 5 &&
 240                     desc->channel[1].size == 5 &&
 241                     desc->channel[2].size == 6) {
 242                     return R300_TX_FORMAT_Z6Y5X5 | result;
 243                 }
 244                 return ~0; /* Unsupported/unknown. */
 245
 246             case 4:
 247                 if (desc->channel[0].size == 5 &&
 248                     desc->channel[1].size == 5 &&
 249                     desc->channel[2].size == 5 &&
 250                     desc->channel[3].size == 1) {
 251                     return R300_TX_FORMAT_W1Z5Y5X5 | result;
 252                 }
 253                 if (desc->channel[0].size == 10 &&
 254                     desc->channel[1].size == 10 &&
 255                     desc->channel[2].size == 10 &&
 256                     desc->channel[3].size == 2) {
 257                     return R300_TX_FORMAT_W2Z10Y10X10 | result;
 258                 }
 259         }
 260         return ~0; /* Unsupported/unknown. */
 261     }
 262
 263     /* And finally, uniform formats. */
 264     switch (desc->channel[0].type) {
 265         case UTIL_FORMAT_TYPE_UNSIGNED:
 266         case UTIL_FORMAT_TYPE_SIGNED:
 267             if (!desc->channel[0].normalized &&
 268                 desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
 269                 return ~0;
 270             }
 271
 272             switch (desc->channel[0].size) {
 273                 case 4:
 274                     switch (desc->nr_channels) {
 275                         case 2:
 276                             return R300_TX_FORMAT_Y4X4 | result;
 277                         case 4:
 278                             return R300_TX_FORMAT_W4Z4Y4X4 | result;
 279                     }
 280                     return ~0;
 281
 282                 case 8:
 283                     switch (desc->nr_channels) {
 284                         case 1:
 285                             return R300_TX_FORMAT_X8 | result;
 286                         case 2:
 287                             return R300_TX_FORMAT_Y8X8 | result;
 288                         case 4:
 289                             return R300_TX_FORMAT_W8Z8Y8X8 | result;
 290                     }
 291                     return ~0;
 292
 293                 case 16:
 294                     switch (desc->nr_channels) {
 295                         case 1:
 296                             return R300_TX_FORMAT_X16 | result;
 297                         case 2:
 298                             return R300_TX_FORMAT_Y16X16 | result;
 299                         case 4:
 300                             return R300_TX_FORMAT_W16Z16Y16X16 | result;
 301                     }
 302             }
 303             return ~0;
 304
 305         case UTIL_FORMAT_TYPE_FLOAT:
 306             switch (desc->channel[0].size) {
 307                 case 16:
 308                     switch (desc->nr_channels) {
 309                         case 1:
 310                             return R300_TX_FORMAT_16F | result;
 311                         case 2:
 312                             return R300_TX_FORMAT_16F_16F | result;
 313                         case 4:
 314                             return R300_TX_FORMAT_16F_16F_16F_16F | result;
 315                     }
 316                     return ~0;
 317
 318                 case 32:
 319                     switch (desc->nr_channels) {
 320                         case 1:
 321                             return R300_TX_FORMAT_32F | result;
 322                         case 2:
 323                             return R300_TX_FORMAT_32F_32F | result;
 324                         case 4:
 325                             return R300_TX_FORMAT_32F_32F_32F_32F | result;
 326                     }
 327             }
 328     }
 329
 330     return ~0; /* Unsupported/unknown. */
 331 }
 332
 333 uint32_t r500_tx_format_msb_bit(enum pipe_format format)
 334 {
 335     switch (format) {
 336         case PIPE_FORMAT_RGTC1_UNORM:
 337         case PIPE_FORMAT_RGTC1_SNORM:
 338         case PIPE_FORMAT_X8Z24_UNORM:
 339         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 340             return R500_TXFORMAT_MSB;
 341         default:
 342             return 0;
 343     }
 344 }
 345
 346 /* Buffer formats. */
 347
 348 /* Colorbuffer formats. This is the unswizzled format of the RB3D block's
 349  * output. For the swizzling of the targets, check the shader's format. */
 350 static uint32_t r300_translate_colorformat(enum pipe_format format)
 351 {
 352     switch (format) {
 353         /* 8-bit buffers. */
 354         case PIPE_FORMAT_A8_UNORM:
 355         case PIPE_FORMAT_I8_UNORM:
 356         case PIPE_FORMAT_L8_UNORM:
 357         case PIPE_FORMAT_R8_UNORM:
 358         case PIPE_FORMAT_R8_SNORM:
 359             return R300_COLOR_FORMAT_I8;
 360
 361         /* 16-bit buffers. */
 362         case PIPE_FORMAT_B5G6R5_UNORM:
 363             return R300_COLOR_FORMAT_RGB565;
 364
 365         case PIPE_FORMAT_B5G5R5A1_UNORM:
 366         case PIPE_FORMAT_B5G5R5X1_UNORM:
 367             return R300_COLOR_FORMAT_ARGB1555;
 368
 369         case PIPE_FORMAT_B4G4R4A4_UNORM:
 370         case PIPE_FORMAT_B4G4R4X4_UNORM:
 371             return R300_COLOR_FORMAT_ARGB4444;
 372
 373         /* 32-bit buffers. */
 374         case PIPE_FORMAT_B8G8R8A8_UNORM:
 375         case PIPE_FORMAT_B8G8R8X8_UNORM:
 376         case PIPE_FORMAT_A8R8G8B8_UNORM:
 377         case PIPE_FORMAT_X8R8G8B8_UNORM:
 378         case PIPE_FORMAT_A8B8G8R8_UNORM:
 379         case PIPE_FORMAT_R8G8B8A8_SNORM:
 380         case PIPE_FORMAT_X8B8G8R8_UNORM:
 381         case PIPE_FORMAT_R8G8B8X8_UNORM:
 382         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 383             return R300_COLOR_FORMAT_ARGB8888;
 384
 385         case PIPE_FORMAT_R10G10B10A2_UNORM:
 386         case PIPE_FORMAT_R10G10B10X2_SNORM:
 387         case PIPE_FORMAT_B10G10R10A2_UNORM:
 388         case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
 389             return R500_COLOR_FORMAT_ARGB2101010;  /* R5xx-only? */
 390
 391         /* 64-bit buffers. */
 392         case PIPE_FORMAT_R16G16B16A16_UNORM:
 393         case PIPE_FORMAT_R16G16B16A16_SNORM:
 394         case PIPE_FORMAT_R16G16B16A16_FLOAT:
 395             return R300_COLOR_FORMAT_ARGB16161616;
 396
 397         /* 128-bit buffers. */
 398         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 399             return R300_COLOR_FORMAT_ARGB32323232;
 400
 401         /* YUV buffers. */
 402         case PIPE_FORMAT_UYVY:
 403             return R300_COLOR_FORMAT_YVYU;
 404         case PIPE_FORMAT_YUYV:
 405             return R300_COLOR_FORMAT_VYUY;
 406         default:
 407             return ~0; /* Unsupported. */
 408     }
 409 }
 410
 411 /* Depthbuffer and stencilbuffer. Thankfully, we only support two flavors. */
 412 static uint32_t r300_translate_zsformat(enum pipe_format format)
 413 {
 414     switch (format) {
 415         /* 16-bit depth, no stencil */
 416         case PIPE_FORMAT_Z16_UNORM:
 417             return R300_DEPTHFORMAT_16BIT_INT_Z;
 418         /* 24-bit depth, ignored stencil */
 419         case PIPE_FORMAT_X8Z24_UNORM:
 420         /* 24-bit depth, 8-bit stencil */
 421         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 422             return R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
 423         default:
 424             return ~0; /* Unsupported. */
 425     }
 426 }
 427
 428 /* Shader output formats. This is essentially the swizzle from the shader
 429  * to the RB3D block.
 430  *
 431  * Note that formats are stored from C3 to C0. */
 432 static uint32_t r300_translate_out_fmt(enum pipe_format format)
 433 {
 434     uint32_t modifier = 0;
 435     unsigned i;
 436     const struct util_format_description *desc;
 437     static const uint32_t sign_bit[4] = {
 438         R300_OUT_SIGN(0x1),
 439         R300_OUT_SIGN(0x2),
 440         R300_OUT_SIGN(0x4),
 441         R300_OUT_SIGN(0x8),
 442     };
 443
 444     desc = util_format_description(format);
 445
 446     /* Specifies how the shader output is written to the fog unit. */
 447     if (desc->channel[0].type == UTIL_FORMAT_TYPE_FLOAT) {
 448         if (desc->channel[0].size == 32) {
 449             modifier |= R300_US_OUT_FMT_C4_32_FP;
 450         } else {
 451             modifier |= R300_US_OUT_FMT_C4_16_FP;
 452         }
 453     } else {
 454         if (desc->channel[0].size == 16) {
 455             modifier |= R300_US_OUT_FMT_C4_16;
 456         } else {
 457             /* C4_8 seems to be used for the formats whose pixel size
 458              * is <= 32 bits. */
 459             modifier |= R300_US_OUT_FMT_C4_8;
 460         }
 461     }
 462
 463     /* Add sign. */
 464     for (i = 0; i < 4; i++)
 465         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 466             modifier |= sign_bit[i];
 467         }
 468
 469     /* Add swizzles and return. */
 470     switch (format) {
 471         /* 8-bit outputs.
 472          * COLORFORMAT_I8 stores the C2 component. */
 473         case PIPE_FORMAT_A8_UNORM:
 474             return modifier | R300_C2_SEL_A;
 475         case PIPE_FORMAT_I8_UNORM:
 476         case PIPE_FORMAT_L8_UNORM:
 477         case PIPE_FORMAT_R8_UNORM:
 478         case PIPE_FORMAT_R8_SNORM:
 479             return modifier | R300_C2_SEL_R;
 480
 481         /* BGRA outputs. */
 482         case PIPE_FORMAT_B5G6R5_UNORM:
 483         case PIPE_FORMAT_B5G5R5A1_UNORM:
 484         case PIPE_FORMAT_B5G5R5X1_UNORM:
 485         case PIPE_FORMAT_B4G4R4A4_UNORM:
 486         case PIPE_FORMAT_B4G4R4X4_UNORM:
 487         case PIPE_FORMAT_B8G8R8A8_UNORM:
 488         case PIPE_FORMAT_B8G8R8X8_UNORM:
 489         case PIPE_FORMAT_B10G10R10A2_UNORM:
 490             return modifier |
 491                 R300_C0_SEL_B | R300_C1_SEL_G |
 492                 R300_C2_SEL_R | R300_C3_SEL_A;
 493
 494         /* ARGB outputs. */
 495         case PIPE_FORMAT_A8R8G8B8_UNORM:
 496         case PIPE_FORMAT_X8R8G8B8_UNORM:
 497             return modifier |
 498                 R300_C0_SEL_A | R300_C1_SEL_R |
 499                 R300_C2_SEL_G | R300_C3_SEL_B;
 500
 501         /* ABGR outputs. */
 502         case PIPE_FORMAT_A8B8G8R8_UNORM:
 503         case PIPE_FORMAT_X8B8G8R8_UNORM:
 504             return modifier |
 505                 R300_C0_SEL_A | R300_C1_SEL_B |
 506                 R300_C2_SEL_G | R300_C3_SEL_R;
 507
 508         /* RGBA outputs. */
 509         case PIPE_FORMAT_R8G8B8X8_UNORM:
 510         case PIPE_FORMAT_R8G8B8A8_SNORM:
 511         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 512         case PIPE_FORMAT_R10G10B10A2_UNORM:
 513         case PIPE_FORMAT_R10G10B10X2_SNORM:
 514         case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
 515         case PIPE_FORMAT_R16G16B16A16_UNORM:
 516         case PIPE_FORMAT_R16G16B16A16_SNORM:
 517         case PIPE_FORMAT_R16G16B16A16_FLOAT:
 518         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 519             return modifier |
 520                 R300_C0_SEL_R | R300_C1_SEL_G |
 521                 R300_C2_SEL_B | R300_C3_SEL_A;
 522
 523         default:
 524             return ~0; /* Unsupported. */
 525     }
 526 }
 527
 528 boolean r300_is_colorbuffer_format_supported(enum pipe_format format)
 529 {
 530     return r300_translate_colorformat(format) != ~0 &&
 531            r300_translate_out_fmt(format) != ~0;
 532 }
 533
 534 boolean r300_is_zs_format_supported(enum pipe_format format)
 535 {
 536     return r300_translate_zsformat(format) != ~0;
 537 }
 538
 539 boolean r300_is_sampler_format_supported(enum pipe_format format)
 540 {
 541     return r300_translate_texformat(format, 0, TRUE) != ~0;
 542 }
 543
 544 static void r300_texture_setup_immutable_state(struct r300_screen* screen,
 545                                                struct r300_texture* tex)
 546 {
 547     struct r300_texture_format_state* f = &tex->tx_format;
 548     struct pipe_resource *pt = &tex->desc.b.b;
 549     boolean is_r500 = screen->caps.is_r500;
 550
 551     /* Set sampler state. */
 552     f->format0 = R300_TX_WIDTH((pt->width0 - 1) & 0x7ff) |
 553                  R300_TX_HEIGHT((pt->height0 - 1) & 0x7ff);
 554
 555     if (tex->desc.uses_stride_addressing) {
 556         /* rectangles love this */
 557         f->format0 |= R300_TX_PITCH_EN;
 558         f->format2 = (tex->desc.stride_in_pixels[0] - 1) & 0x1fff;
 559     } else {
 560         /* Power of two textures (3D, mipmaps, and no pitch),
 561          * also NPOT textures with a width being POT. */
 562         f->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth0) & 0xf);
 563     }
 564
 565     f->format1 = 0;
 566     if (pt->target == PIPE_TEXTURE_CUBE) {
 567         f->format1 |= R300_TX_FORMAT_CUBIC_MAP;
 568     }
 569     if (pt->target == PIPE_TEXTURE_3D) {
 570         f->format1 |= R300_TX_FORMAT_3D;
 571     }
 572
 573     /* large textures on r500 */
 574     if (is_r500)
 575     {
 576         if (pt->width0 > 2048) {
 577             f->format2 |= R500_TXWIDTH_BIT11;
 578         }
 579         if (pt->height0 > 2048) {
 580             f->format2 |= R500_TXHEIGHT_BIT11;
 581         }
 582     }
 583
 584     f->tile_config = R300_TXO_MACRO_TILE(tex->desc.macrotile[0]) |
 585                      R300_TXO_MICRO_TILE(tex->desc.microtile);
 586 }
 587
 588 static void r300_texture_setup_fb_state(struct r300_screen* screen,
 589                                         struct r300_texture* tex)
 590 {
 591     unsigned i;
 592
 593     /* Set framebuffer state. */
 594     if (util_format_is_depth_or_stencil(tex->desc.b.b.format)) {
 595         for (i = 0; i <= tex->desc.b.b.last_level; i++) {
 596             tex->fb_state.pitch[i] =
 597                 tex->desc.stride_in_pixels[i] |
 598                 R300_DEPTHMACROTILE(tex->desc.macrotile[i]) |
 599                 R300_DEPTHMICROTILE(tex->desc.microtile);
 600         }
 601         tex->fb_state.format = r300_translate_zsformat(tex->desc.b.b.format);
 602     } else {
 603         for (i = 0; i <= tex->desc.b.b.last_level; i++) {
 604             tex->fb_state.pitch[i] =
 605                 tex->desc.stride_in_pixels[i] |
 606                 r300_translate_colorformat(tex->desc.b.b.format) |
 607                 R300_COLOR_TILE(tex->desc.macrotile[i]) |
 608                 R300_COLOR_MICROTILE(tex->desc.microtile);
 609         }
 610         tex->fb_state.format = r300_translate_out_fmt(tex->desc.b.b.format);
 611     }
 612 }
 613
 614 void r300_texture_reinterpret_format(struct pipe_screen *screen,
 615                                      struct pipe_resource *tex,
 616                                      enum pipe_format new_format)
 617 {
 618     struct r300_screen *r300screen = r300_screen(screen);
 619
 620     SCREEN_DBG(r300screen, DBG_TEX,
 621         "r300: texture_reinterpret_format: %s -> %s\n",
 622         util_format_short_name(tex->format),
 623         util_format_short_name(new_format));
 624
 625     tex->format = new_format;
 626
 627     r300_texture_setup_fb_state(r300_screen(screen), r300_texture(tex));
 628 }
 629
 630 static unsigned r300_texture_is_referenced(struct pipe_context *context,
 631                                          struct pipe_resource *texture,
 632                                          unsigned face, unsigned level)
 633 {
 634     struct r300_context *r300 = r300_context(context);
 635     struct r300_texture *rtex = (struct r300_texture *)texture;
 636
 637     if (r300->rws->cs_is_buffer_referenced(r300->cs,
 638                                            rtex->buffer, R300_REF_CS))
 639         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 640
 641     return PIPE_UNREFERENCED;
 642 }
 643
 644 static void r300_texture_destroy(struct pipe_screen *screen,
 645                                  struct pipe_resource* texture)
 646 {
 647     struct r300_texture* tex = (struct r300_texture*)texture;
 648     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)texture->screen->winsys;
 649     int i;
 650
 651     rws->buffer_reference(rws, &tex->buffer, NULL);
 652     for (i = 0; i < R300_MAX_TEXTURE_LEVELS; i++) {
 653         if (tex->hiz_mem[i])
 654             u_mmFreeMem(tex->hiz_mem[i]);
 655         if (tex->zmask_mem[i])
 656             u_mmFreeMem(tex->zmask_mem[i]);
 657     }
 658
 659     FREE(tex);
 660 }
 661
 662 static boolean r300_texture_get_handle(struct pipe_screen* screen,
 663                                        struct pipe_resource *texture,
 664                                        struct winsys_handle *whandle)
 665 {
 666     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 667     struct r300_texture* tex = (struct r300_texture*)texture;
 668
 669     if (!tex) {
 670         return FALSE;
 671     }
 672
 673     return rws->buffer_get_handle(rws, tex->buffer,
 674                                   tex->desc.stride_in_bytes[0], whandle);
 675 }
 676
 677 struct u_resource_vtbl r300_texture_vtbl =
 678 {
 679    r300_texture_get_handle,           /* get_handle */
 680    r300_texture_destroy,              /* resource_destroy */
 681    r300_texture_is_referenced,        /* is_resource_referenced */
 682    r300_texture_get_transfer,         /* get_transfer */
 683    r300_texture_transfer_destroy,     /* transfer_destroy */
 684    r300_texture_transfer_map,         /* transfer_map */
 685    u_default_transfer_flush_region,   /* transfer_flush_region */
 686    r300_texture_transfer_unmap,       /* transfer_unmap */
 687    u_default_transfer_inline_write    /* transfer_inline_write */
 688 };
 689
 690 /* The common texture constructor. */
 691 static struct r300_texture*
 692 r300_texture_create_object(struct r300_screen *rscreen,
 693                            const struct pipe_resource *base,
 694                            enum r300_buffer_tiling microtile,
 695                            enum r300_buffer_tiling macrotile,
 696                            unsigned stride_in_bytes_override,
 697                            unsigned max_buffer_size,
 698                            struct r300_winsys_buffer *buffer)
 699 {
 700     struct r300_winsys_screen *rws = rscreen->rws;
 701     struct r300_texture *tex = CALLOC_STRUCT(r300_texture);
 702     if (!tex) {
 703         if (buffer)
 704             rws->buffer_reference(rws, &buffer, NULL);
 705         return NULL;
 706     }
 707
 708     /* Initialize the descriptor. */
 709     if (!r300_texture_desc_init(rscreen, &tex->desc, base,
 710                                 microtile, macrotile,
 711                                 stride_in_bytes_override,
 712                                 max_buffer_size)) {
 713         if (buffer)
 714             rws->buffer_reference(rws, &buffer, NULL);
 715         FREE(tex);
 716         return NULL;
 717     }
 718     /* Initialize the hardware state. */
 719     r300_texture_setup_immutable_state(rscreen, tex);
 720     r300_texture_setup_fb_state(rscreen, tex);
 721
 722     tex->desc.b.vtbl = &r300_texture_vtbl;
 723     pipe_reference_init(&tex->desc.b.b.reference, 1);
 724     tex->domain = base->flags & R300_RESOURCE_FLAG_TRANSFER ?
 725                   R300_DOMAIN_GTT :
 726                   R300_DOMAIN_VRAM | R300_DOMAIN_GTT;
 727     tex->buffer = buffer;
 728
 729     /* Create the backing buffer if needed. */
 730     if (!tex->buffer) {
 731         tex->buffer = rws->buffer_create(rws, tex->desc.size_in_bytes, 2048,
 732                                          base->bind, base->usage, tex->domain);
 733
 734         if (!tex->buffer) {
 735             FREE(tex);
 736             return NULL;
 737         }
 738     }
 739
 740     rws->buffer_set_tiling(rws, tex->buffer,
 741             tex->desc.microtile, tex->desc.macrotile[0],
 742             tex->desc.stride_in_bytes[0]);
 743
 744     return tex;
 745 }
 746
 747 /* Create a new texture. */
 748 struct pipe_resource *r300_texture_create(struct pipe_screen *screen,
 749                                           const struct pipe_resource *base)
 750 {
 751     struct r300_screen *rscreen = r300_screen(screen);
 752     enum r300_buffer_tiling microtile, macrotile;
 753
 754     /* Refuse to create a texture with size 0. */
 755     if (!base->width0 ||
 756         (!base->height0 && (base->target == PIPE_TEXTURE_2D ||
 757                             base->target == PIPE_TEXTURE_CUBE)) ||
 758         (!base->depth0 && base->target == PIPE_TEXTURE_3D)) {
 759         fprintf(stderr, "r300: texture_create: "
 760                 "Got invalid texture dimensions: %ix%ix%i\n",
 761                 base->width0, base->height0, base->depth0);
 762         return NULL;
 763     }
 764
 765     if ((base->flags & R300_RESOURCE_FLAG_TRANSFER) ||
 766         (base->bind & PIPE_BIND_SCANOUT)) {
 767         microtile = R300_BUFFER_LINEAR;
 768         macrotile = R300_BUFFER_LINEAR;
 769     } else {
 770         microtile = R300_BUFFER_SELECT_LAYOUT;
 771         macrotile = R300_BUFFER_SELECT_LAYOUT;
 772     }
 773
 774     return (struct pipe_resource*)
 775            r300_texture_create_object(rscreen, base, microtile, macrotile,
 776                                       0, 0, NULL);
 777 }
 778
 779 struct pipe_resource *r300_texture_from_handle(struct pipe_screen *screen,
 780                                                const struct pipe_resource *base,
 781                                                struct winsys_handle *whandle)
 782 {
 783     struct r300_winsys_screen *rws = (struct r300_winsys_screen*)screen->winsys;
 784     struct r300_screen *rscreen = r300_screen(screen);
 785     struct r300_winsys_buffer *buffer;
 786     enum r300_buffer_tiling microtile, macrotile;
 787     unsigned stride, size;
 788
 789     /* Support only 2D textures without mipmaps */
 790     if (base->target != PIPE_TEXTURE_2D ||
 791         base->depth0 != 1 ||
 792         base->last_level != 0) {
 793         return NULL;
 794     }
 795
 796     buffer = rws->buffer_from_handle(rws, whandle, &stride, &size);
 797     if (!buffer)
 798         return NULL;
 799
 800     rws->buffer_get_tiling(rws, buffer, &microtile, &macrotile);
 801
 802     /* Enforce a microtiled zbuffer. */
 803     if (util_format_is_depth_or_stencil(base->format) &&
 804         microtile == R300_BUFFER_LINEAR) {
 805         switch (util_format_get_blocksize(base->format)) {
 806             case 4:
 807                 microtile = R300_BUFFER_TILED;
 808                 break;
 809
 810             case 2:
 811                 if (rws->get_value(rws, R300_VID_SQUARE_TILING_SUPPORT))
 812                     microtile = R300_BUFFER_SQUARETILED;
 813                 break;
 814         }
 815     }
 816
 817     return (struct pipe_resource*)
 818            r300_texture_create_object(rscreen, base, microtile, macrotile,
 819                                       stride, size, buffer);
 820 }
 821
 822 /* Not required to implement u_resource_vtbl, consider moving to another file:
 823  */
 824 struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 825                                           struct pipe_resource* texture,
 826                                           unsigned face,
 827                                           unsigned level,
 828                                           unsigned zslice,
 829                                           unsigned flags)
 830 {
 831     struct r300_texture* tex = r300_texture(texture);
 832     struct r300_surface* surface = CALLOC_STRUCT(r300_surface);
 833
 834     if (surface) {
 835         uint32_t offset, tile_height;
 836
 837         pipe_reference_init(&surface->base.reference, 1);
 838         pipe_resource_reference(&surface->base.texture, texture);
 839         surface->base.format = texture->format;
 840         surface->base.width = u_minify(texture->width0, level);
 841         surface->base.height = u_minify(texture->height0, level);
 842         surface->base.usage = flags;
 843         surface->base.zslice = zslice;
 844         surface->base.face = face;
 845         surface->base.level = level;
 846
 847         surface->buffer = tex->buffer;
 848
 849         /* Prefer VRAM if there are multiple domains to choose from. */
 850         surface->domain = tex->domain;
 851         if (surface->domain & R300_DOMAIN_VRAM)
 852             surface->domain &= ~R300_DOMAIN_GTT;
 853
 854         surface->offset = r300_texture_get_offset(&tex->desc,
 855                                                   level, zslice, face);
 856         surface->pitch = tex->fb_state.pitch[level];
 857         surface->format = tex->fb_state.format;
 858
 859         /* Parameters for the CBZB clear. */
 860         surface->cbzb_allowed = tex->desc.cbzb_allowed[level];
 861         surface->cbzb_width = align(surface->base.width, 64);
 862
 863         /* Height must be aligned to the size of a tile. */
 864         tile_height = r300_get_pixel_alignment(tex->desc.b.b.format,
 865                                                tex->desc.b.b.nr_samples,
 866                                                tex->desc.microtile,
 867                                                tex->desc.macrotile[level],
 868                                                DIM_HEIGHT);
 869
 870         surface->cbzb_height = align((surface->base.height + 1) / 2,
 871                                      tile_height);
 872
 873         /* Offset must be aligned to 2K and must point at the beginning
 874          * of a scanline. */
 875         offset = surface->offset +
 876                  tex->desc.stride_in_bytes[level] * surface->cbzb_height;
 877         surface->cbzb_midpoint_offset = offset & ~2047;
 878
 879         surface->cbzb_pitch = surface->pitch & 0x1ffffc;
 880
 881         if (util_format_get_blocksizebits(surface->base.format) == 32)
 882             surface->cbzb_format = R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
 883         else
 884             surface->cbzb_format = R300_DEPTHFORMAT_16BIT_INT_Z;
 885
 886         SCREEN_DBG(r300_screen(screen), DBG_CBZB,
 887                    "CBZB Dim: %ix%i, Misalignment: %i, Macro: %s\n",
 888                    surface->cbzb_width, surface->cbzb_height,
 889                    offset & 2047,
 890                    tex->desc.macrotile[level] ? "YES" : " NO");
 891     }
 892
 893     return &surface->base;
 894 }
 895
 896 /* Not required to implement u_resource_vtbl, consider moving to another file:
 897  */
 898 void r300_tex_surface_destroy(struct pipe_surface* s)
 899 {
 900     pipe_resource_reference(&s->texture, NULL);
 901     FREE(s);
 902 }