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 #include "pipe/p_screen.h"
  25
  26 #include "util/u_format.h"
  27 #include "util/u_math.h"
  28 #include "util/u_memory.h"
  29
  30 #include "r300_context.h"
  31 #include "r300_texture.h"
  32 #include "r300_screen.h"
  33 #include "r300_state_inlines.h"
  34 #include "r300_winsys.h"
  35
  36 #define TILE_WIDTH 0
  37 #define TILE_HEIGHT 1
  38
  39 static const unsigned microblock_table[5][3][2] = {
  40     /*linear  tiled   square-tiled */
  41     {{32, 1}, {8, 4}, {0, 0}}, /*   8 bits per pixel */
  42     {{16, 1}, {8, 2}, {4, 4}}, /*  16 bits per pixel */
  43     {{ 8, 1}, {4, 2}, {0, 0}}, /*  32 bits per pixel */
  44     {{ 4, 1}, {0, 0}, {2, 2}}, /*  64 bits per pixel */
  45     {{ 2, 1}, {0, 0}, {0, 0}}  /* 128 bits per pixel */
  46 };
  47
  48 /* Translate a pipe_format into a useful texture format for sampling.
  49  *
  50  * Some special formats are translated directly using R300_EASY_TX_FORMAT,
  51  * but the majority of them is translated in a generic way, automatically
  52  * supporting all the formats hw can support.
  53  *
  54  * R300_EASY_TX_FORMAT swizzles the texture.
  55  * Note the signature of R300_EASY_TX_FORMAT:
  56  *   R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
  57  *
  58  * The FORMAT specifies how the texture sampler will treat the texture, and
  59  * makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
  60 static uint32_t r300_translate_texformat(enum pipe_format format)
  61 {
  62     uint32_t result = 0;
  63     const struct util_format_description *desc;
  64     unsigned components = 0, i;
  65     boolean uniform = TRUE;
  66     const uint32_t swizzle_shift[4] = {
  67         R300_TX_FORMAT_R_SHIFT,
  68         R300_TX_FORMAT_G_SHIFT,
  69         R300_TX_FORMAT_B_SHIFT,
  70         R300_TX_FORMAT_A_SHIFT
  71     };
  72     const uint32_t swizzle[4] = {
  73         R300_TX_FORMAT_X,
  74         R300_TX_FORMAT_Y,
  75         R300_TX_FORMAT_Z,
  76         R300_TX_FORMAT_W
  77     };
  78     const uint32_t sign_bit[4] = {
  79         R300_TX_FORMAT_SIGNED_X,
  80         R300_TX_FORMAT_SIGNED_Y,
  81         R300_TX_FORMAT_SIGNED_Z,
  82         R300_TX_FORMAT_SIGNED_W,
  83     };
  84
  85     desc = util_format_description(format);
  86
  87     /* Colorspace (return non-RGB formats directly). */
  88     switch (desc->colorspace) {
  89         /* Depth stencil formats. */
  90         case UTIL_FORMAT_COLORSPACE_ZS:
  91             switch (format) {
  92                 case PIPE_FORMAT_Z16_UNORM:
  93                     return R300_EASY_TX_FORMAT(X, X, X, X, X16);
  94                 case PIPE_FORMAT_X8Z24_UNORM:
  95                 case PIPE_FORMAT_S8Z24_UNORM:
  96                     return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
  97                 default:
  98                     return ~0; /* Unsupported. */
  99             }
 100
 101         /* YUV formats. */
 102         case UTIL_FORMAT_COLORSPACE_YUV:
 103             result |= R300_TX_FORMAT_YUV_TO_RGB;
 104
 105             switch (format) {
 106                 case PIPE_FORMAT_UYVY:
 107                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
 108                 case PIPE_FORMAT_YUYV:
 109                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
 110                 default:
 111                     return ~0; /* Unsupported/unknown. */
 112             }
 113
 114         /* Add gamma correction. */
 115         case UTIL_FORMAT_COLORSPACE_SRGB:
 116             result |= R300_TX_FORMAT_GAMMA;
 117             break;
 118
 119         default:;
 120     }
 121
 122     /* Add swizzle. */
 123     for (i = 0; i < 4; i++) {
 124         switch (desc->swizzle[i]) {
 125             case UTIL_FORMAT_SWIZZLE_X:
 126             case UTIL_FORMAT_SWIZZLE_NONE:
 127                 result |= swizzle[0] << swizzle_shift[i];
 128                 break;
 129             case UTIL_FORMAT_SWIZZLE_Y:
 130                 result |= swizzle[1] << swizzle_shift[i];
 131                 break;
 132             case UTIL_FORMAT_SWIZZLE_Z:
 133                 result |= swizzle[2] << swizzle_shift[i];
 134                 break;
 135             case UTIL_FORMAT_SWIZZLE_W:
 136                 result |= swizzle[3] << swizzle_shift[i];
 137                 break;
 138             case UTIL_FORMAT_SWIZZLE_0:
 139                 result |= R300_TX_FORMAT_ZERO << swizzle_shift[i];
 140                 break;
 141             case UTIL_FORMAT_SWIZZLE_1:
 142                 result |= R300_TX_FORMAT_ONE << swizzle_shift[i];
 143                 break;
 144             default:
 145                 return ~0; /* Unsupported. */
 146         }
 147     }
 148
 149     /* Compressed formats. */
 150     if (desc->layout == UTIL_FORMAT_LAYOUT_COMPRESSED) {
 151         switch (format) {
 152             case PIPE_FORMAT_DXT1_RGB:
 153             case PIPE_FORMAT_DXT1_RGBA:
 154             case PIPE_FORMAT_DXT1_SRGB:
 155             case PIPE_FORMAT_DXT1_SRGBA:
 156                 return R300_TX_FORMAT_DXT1 | result;
 157             case PIPE_FORMAT_DXT3_RGBA:
 158             case PIPE_FORMAT_DXT3_SRGBA:
 159                 return R300_TX_FORMAT_DXT3 | result;
 160             case PIPE_FORMAT_DXT5_RGBA:
 161             case PIPE_FORMAT_DXT5_SRGBA:
 162                 return R300_TX_FORMAT_DXT5 | result;
 163             default:
 164                 return ~0; /* Unsupported/unknown. */
 165         }
 166     }
 167
 168     /* Get the number of components. */
 169     for (i = 0; i < 4; i++) {
 170         if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 171             ++components;
 172         }
 173     }
 174
 175     /* Add sign. */
 176     for (i = 0; i < components; i++) {
 177         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 178             result |= sign_bit[i];
 179         }
 180     }
 181
 182     /* See whether the components are of the same size. */
 183     for (i = 1; i < components; i++) {
 184         uniform = uniform && desc->channel[0].size == desc->channel[i].size;
 185     }
 186
 187     /* Non-uniform formats. */
 188     if (!uniform) {
 189         switch (components) {
 190             case 3:
 191                 if (desc->channel[0].size == 5 &&
 192                     desc->channel[1].size == 6 &&
 193                     desc->channel[2].size == 5) {
 194                     return R300_TX_FORMAT_Z5Y6X5 | result;
 195                 }
 196                 if (desc->channel[0].size == 5 &&
 197                     desc->channel[1].size == 5 &&
 198                     desc->channel[2].size == 6) {
 199                     return R300_TX_FORMAT_Z6Y5X5 | result;
 200                 }
 201                 return ~0; /* Unsupported/unknown. */
 202
 203             case 4:
 204                 if (desc->channel[0].size == 5 &&
 205                     desc->channel[1].size == 5 &&
 206                     desc->channel[2].size == 5 &&
 207                     desc->channel[3].size == 1) {
 208                     return R300_TX_FORMAT_W1Z5Y5X5 | result;
 209                 }
 210                 if (desc->channel[0].size == 10 &&
 211                     desc->channel[1].size == 10 &&
 212                     desc->channel[2].size == 10 &&
 213                     desc->channel[3].size == 2) {
 214                     return R300_TX_FORMAT_W2Z10Y10X10 | result;
 215                 }
 216         }
 217         return ~0; /* Unsupported/unknown. */
 218     }
 219
 220     /* And finally, uniform formats. */
 221     switch (desc->channel[0].type) {
 222         case UTIL_FORMAT_TYPE_UNSIGNED:
 223         case UTIL_FORMAT_TYPE_SIGNED:
 224             if (!desc->channel[0].normalized &&
 225                 desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
 226                 return ~0;
 227             }
 228
 229             switch (desc->channel[0].size) {
 230                 case 4:
 231                     switch (components) {
 232                         case 2:
 233                             return R300_TX_FORMAT_Y4X4 | result;
 234                         case 4:
 235                             return R300_TX_FORMAT_W4Z4Y4X4 | result;
 236                     }
 237                     return ~0;
 238
 239                 case 8:
 240                     switch (components) {
 241                         case 1:
 242                             return R300_TX_FORMAT_X8 | result;
 243                         case 2:
 244                             return R300_TX_FORMAT_Y8X8 | result;
 245                         case 4:
 246                             return R300_TX_FORMAT_W8Z8Y8X8 | result;
 247                     }
 248                     return ~0;
 249
 250                 case 16:
 251                     switch (components) {
 252                         case 1:
 253                             return R300_TX_FORMAT_X16 | result;
 254                         case 2:
 255                             return R300_TX_FORMAT_Y16X16 | result;
 256                         case 4:
 257                             return R300_TX_FORMAT_W16Z16Y16X16 | result;
 258                     }
 259             }
 260             return ~0;
 261
 262 /* XXX Enable float textures here. */
 263 #if 0
 264         case UTIL_FORMAT_TYPE_FLOAT:
 265             switch (desc->channel[0].size) {
 266                 case 16:
 267                     switch (components) {
 268                         case 1:
 269                             return R300_TX_FORMAT_16F | result;
 270                         case 2:
 271                             return R300_TX_FORMAT_16F_16F | result;
 272                         case 4:
 273                             return R300_TX_FORMAT_16F_16F_16F_16F | result;
 274                     }
 275                     return ~0;
 276
 277                 case 32:
 278                     switch (components) {
 279                         case 1:
 280                             return R300_TX_FORMAT_32F | result;
 281                         case 2:
 282                             return R300_TX_FORMAT_32F_32F | result;
 283                         case 4:
 284                             return R300_TX_FORMAT_32F_32F_32F_32F | result;
 285                     }
 286             }
 287 #endif
 288     }
 289
 290     return ~0; /* Unsupported/unknown. */
 291 }
 292
 293 /* Buffer formats. */
 294
 295 /* Colorbuffer formats. This is the unswizzled format of the RB3D block's
 296  * output. For the swizzling of the targets, check the shader's format. */
 297 static uint32_t r300_translate_colorformat(enum pipe_format format)
 298 {
 299     switch (format) {
 300         /* 8-bit buffers. */
 301         case PIPE_FORMAT_A8_UNORM:
 302         case PIPE_FORMAT_I8_UNORM:
 303         case PIPE_FORMAT_L8_UNORM:
 304         case PIPE_FORMAT_R8_UNORM:
 305         case PIPE_FORMAT_R8_SNORM:
 306             return R300_COLOR_FORMAT_I8;
 307
 308         /* 16-bit buffers. */
 309         case PIPE_FORMAT_B5G6R5_UNORM:
 310             return R300_COLOR_FORMAT_RGB565;
 311         case PIPE_FORMAT_B5G5R5A1_UNORM:
 312         case PIPE_FORMAT_B5G5R5X1_UNORM:
 313             return R300_COLOR_FORMAT_ARGB1555;
 314         case PIPE_FORMAT_B4G4R4A4_UNORM:
 315             return R300_COLOR_FORMAT_ARGB4444;
 316
 317         /* 32-bit buffers. */
 318         case PIPE_FORMAT_B8G8R8A8_UNORM:
 319         case PIPE_FORMAT_B8G8R8X8_UNORM:
 320         case PIPE_FORMAT_A8R8G8B8_UNORM:
 321         case PIPE_FORMAT_X8R8G8B8_UNORM:
 322         case PIPE_FORMAT_A8B8G8R8_UNORM:
 323         case PIPE_FORMAT_R8G8B8A8_SNORM:
 324         case PIPE_FORMAT_X8B8G8R8_UNORM:
 325         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 326             return R300_COLOR_FORMAT_ARGB8888;
 327         case PIPE_FORMAT_R10G10B10A2_UNORM:
 328             return R500_COLOR_FORMAT_ARGB2101010;  /* R5xx-only? */
 329
 330         /* 64-bit buffers. */
 331         case PIPE_FORMAT_R16G16B16A16_UNORM:
 332         case PIPE_FORMAT_R16G16B16A16_SNORM:
 333         //case PIPE_FORMAT_R16G16B16A16_FLOAT: /* not in pipe_format */
 334             return R300_COLOR_FORMAT_ARGB16161616;
 335
 336 /* XXX Enable float textures here. */
 337 #if 0
 338         /* 128-bit buffers. */
 339         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 340             return R300_COLOR_FORMAT_ARGB32323232;
 341 #endif
 342
 343         /* YUV buffers. */
 344         case PIPE_FORMAT_UYVY:
 345             return R300_COLOR_FORMAT_YVYU;
 346         case PIPE_FORMAT_YUYV:
 347             return R300_COLOR_FORMAT_VYUY;
 348         default:
 349             return ~0; /* Unsupported. */
 350     }
 351 }
 352
 353 /* Depthbuffer and stencilbuffer. Thankfully, we only support two flavors. */
 354 static uint32_t r300_translate_zsformat(enum pipe_format format)
 355 {
 356     switch (format) {
 357         /* 16-bit depth, no stencil */
 358         case PIPE_FORMAT_Z16_UNORM:
 359             return R300_DEPTHFORMAT_16BIT_INT_Z;
 360         /* 24-bit depth, ignored stencil */
 361         case PIPE_FORMAT_X8Z24_UNORM:
 362         /* 24-bit depth, 8-bit stencil */
 363         case PIPE_FORMAT_S8Z24_UNORM:
 364             return R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
 365         default:
 366             return ~0; /* Unsupported. */
 367     }
 368 }
 369
 370 /* Shader output formats. This is essentially the swizzle from the shader
 371  * to the RB3D block.
 372  *
 373  * Note that formats are stored from C3 to C0. */
 374 static uint32_t r300_translate_out_fmt(enum pipe_format format)
 375 {
 376     uint32_t modifier = 0;
 377     unsigned i;
 378     const struct util_format_description *desc;
 379     static const uint32_t sign_bit[4] = {
 380         R300_OUT_SIGN(0x1),
 381         R300_OUT_SIGN(0x2),
 382         R300_OUT_SIGN(0x4),
 383         R300_OUT_SIGN(0x8),
 384     };
 385
 386     desc = util_format_description(format);
 387
 388     /* Specifies how the shader output is written to the fog unit. */
 389     if (desc->channel[0].type == UTIL_FORMAT_TYPE_FLOAT) {
 390         if (desc->channel[0].size == 32) {
 391             modifier |= R300_US_OUT_FMT_C4_32_FP;
 392         } else {
 393             modifier |= R300_US_OUT_FMT_C4_16_FP;
 394         }
 395     } else {
 396         if (desc->channel[0].size == 16) {
 397             modifier |= R300_US_OUT_FMT_C4_16;
 398         } else {
 399             /* C4_8 seems to be used for the formats whose pixel size
 400              * is <= 32 bits. */
 401             modifier |= R300_US_OUT_FMT_C4_8;
 402         }
 403     }
 404
 405     /* Add sign. */
 406     for (i = 0; i < 4; i++)
 407         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 408             modifier |= sign_bit[i];
 409         }
 410
 411     /* Add swizzles and return. */
 412     switch (format) {
 413         /* 8-bit outputs.
 414          * COLORFORMAT_I8 stores the C2 component. */
 415         case PIPE_FORMAT_A8_UNORM:
 416             return modifier | R300_C2_SEL_A;
 417         case PIPE_FORMAT_I8_UNORM:
 418         case PIPE_FORMAT_L8_UNORM:
 419         case PIPE_FORMAT_R8_UNORM:
 420         case PIPE_FORMAT_R8_SNORM:
 421             return modifier | R300_C2_SEL_R;
 422
 423         /* BGRA outputs. */
 424         case PIPE_FORMAT_B5G6R5_UNORM:
 425         case PIPE_FORMAT_B5G5R5A1_UNORM:
 426         case PIPE_FORMAT_B5G5R5X1_UNORM:
 427         case PIPE_FORMAT_B4G4R4A4_UNORM:
 428         case PIPE_FORMAT_B8G8R8A8_UNORM:
 429         case PIPE_FORMAT_B8G8R8X8_UNORM:
 430             return modifier |
 431                 R300_C0_SEL_B | R300_C1_SEL_G |
 432                 R300_C2_SEL_R | R300_C3_SEL_A;
 433
 434         /* ARGB outputs. */
 435         case PIPE_FORMAT_A8R8G8B8_UNORM:
 436         case PIPE_FORMAT_X8R8G8B8_UNORM:
 437             return modifier |
 438                 R300_C0_SEL_A | R300_C1_SEL_R |
 439                 R300_C2_SEL_G | R300_C3_SEL_B;
 440
 441         /* ABGR outputs. */
 442         case PIPE_FORMAT_A8B8G8R8_UNORM:
 443         case PIPE_FORMAT_X8B8G8R8_UNORM:
 444             return modifier |
 445                 R300_C0_SEL_A | R300_C1_SEL_B |
 446                 R300_C2_SEL_G | R300_C3_SEL_R;
 447
 448         /* RGBA outputs. */
 449         case PIPE_FORMAT_R8G8B8A8_SNORM:
 450         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 451         case PIPE_FORMAT_R10G10B10A2_UNORM:
 452         case PIPE_FORMAT_R16G16B16A16_UNORM:
 453         case PIPE_FORMAT_R16G16B16A16_SNORM:
 454         //case PIPE_FORMAT_R16G16B16A16_FLOAT: /* not in pipe_format */
 455         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 456             return modifier |
 457                 R300_C0_SEL_R | R300_C1_SEL_G |
 458                 R300_C2_SEL_B | R300_C3_SEL_A;
 459
 460         default:
 461             return ~0; /* Unsupported. */
 462     }
 463 }
 464
 465 boolean r300_is_colorbuffer_format_supported(enum pipe_format format)
 466 {
 467     return r300_translate_colorformat(format) != ~0 &&
 468            r300_translate_out_fmt(format) != ~0;
 469 }
 470
 471 boolean r300_is_zs_format_supported(enum pipe_format format)
 472 {
 473     return r300_translate_zsformat(format) != ~0;
 474 }
 475
 476 boolean r300_is_sampler_format_supported(enum pipe_format format)
 477 {
 478     return r300_translate_texformat(format) != ~0;
 479 }
 480
 481 static void r300_setup_texture_state(struct r300_screen* screen, struct r300_texture* tex)
 482 {
 483     struct r300_texture_format_state* state = &tex->state;
 484     struct pipe_texture *pt = &tex->tex;
 485     unsigned i;
 486     boolean is_r500 = screen->caps->is_r500;
 487
 488     /* Set sampler state. */
 489     state->format0 = R300_TX_WIDTH((pt->width0 - 1) & 0x7ff) |
 490                      R300_TX_HEIGHT((pt->height0 - 1) & 0x7ff);
 491
 492     if (tex->is_npot) {
 493         /* rectangles love this */
 494         state->format0 |= R300_TX_PITCH_EN;
 495         state->format2 = (tex->pitch[0] - 1) & 0x1fff;
 496     } else {
 497         /* power of two textures (3D, mipmaps, and no pitch) */
 498         state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth0) & 0xf);
 499     }
 500
 501     state->format1 = r300_translate_texformat(pt->format);
 502     if (pt->target == PIPE_TEXTURE_CUBE) {
 503         state->format1 |= R300_TX_FORMAT_CUBIC_MAP;
 504     }
 505     if (pt->target == PIPE_TEXTURE_3D) {
 506         state->format1 |= R300_TX_FORMAT_3D;
 507     }
 508
 509     /* large textures on r500 */
 510     if (is_r500)
 511     {
 512         if (pt->width0 > 2048) {
 513             state->format2 |= R500_TXWIDTH_BIT11;
 514         }
 515         if (pt->height0 > 2048) {
 516             state->format2 |= R500_TXHEIGHT_BIT11;
 517         }
 518     }
 519
 520     SCREEN_DBG(screen, DBG_TEX, "r300: Set texture state (%dx%d, %d levels)\n",
 521                pt->width0, pt->height0, pt->last_level);
 522
 523     /* Set framebuffer state. */
 524     if (util_format_is_depth_or_stencil(tex->tex.format)) {
 525         for (i = 0; i <= tex->tex.last_level; i++) {
 526             tex->fb_state.depthpitch[i] =
 527                 tex->pitch[i] |
 528                 R300_DEPTHMACROTILE(tex->mip_macrotile[i]) |
 529                 R300_DEPTHMICROTILE(tex->microtile);
 530         }
 531         tex->fb_state.zb_format = r300_translate_zsformat(tex->tex.format);
 532     } else {
 533         for (i = 0; i <= tex->tex.last_level; i++) {
 534             tex->fb_state.colorpitch[i] =
 535                 tex->pitch[i] |
 536                 r300_translate_colorformat(tex->tex.format) |
 537                 R300_COLOR_TILE(tex->mip_macrotile[i]) |
 538                 R300_COLOR_MICROTILE(tex->microtile);
 539         }
 540         tex->fb_state.us_out_fmt = r300_translate_out_fmt(tex->tex.format);
 541     }
 542 }
 543
 544 void r300_texture_reinterpret_format(struct pipe_screen *screen,
 545                                      struct pipe_texture *tex,
 546                                      enum pipe_format new_format)
 547 {
 548     struct r300_screen *r300screen = r300_screen(screen);
 549
 550     SCREEN_DBG(r300screen, DBG_TEX, "r300: Reinterpreting format: %s -> %s\n",
 551                util_format_name(tex->format), util_format_name(new_format));
 552
 553     tex->format = new_format;
 554
 555     r300_setup_texture_state(r300_screen(screen), (struct r300_texture*)tex);
 556 }
 557
 558 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
 559                                  unsigned zslice, unsigned face)
 560 {
 561     unsigned offset = tex->offset[level];
 562
 563     switch (tex->tex.target) {
 564         case PIPE_TEXTURE_3D:
 565             assert(face == 0);
 566             return offset + zslice * tex->layer_size[level];
 567
 568         case PIPE_TEXTURE_CUBE:
 569             assert(zslice == 0);
 570             return offset + face * tex->layer_size[level];
 571
 572         default:
 573             assert(zslice == 0 && face == 0);
 574             return offset;
 575     }
 576 }
 577
 578 /**
 579  * Return the width (dim==TILE_WIDTH) or height (dim==TILE_HEIGHT) of one tile
 580  * of the given texture.
 581  */
 582 static unsigned r300_texture_get_tile_size(struct r300_texture* tex,
 583                                            int dim, boolean macrotile)
 584 {
 585     unsigned pixsize, tile_size;
 586
 587     pixsize = util_format_get_blocksize(tex->tex.format);
 588     tile_size = microblock_table[util_logbase2(pixsize)][tex->microtile][dim];
 589
 590     if (macrotile) {
 591         tile_size *= 8;
 592     }
 593
 594     assert(tile_size);
 595     return tile_size;
 596 }
 597
 598 /* Return true if macrotiling should be enabled on the miplevel. */
 599 static boolean r300_texture_macro_switch(struct r300_texture *tex,
 600                                          unsigned level,
 601                                          boolean rv350_mode,
 602                                          int dim)
 603 {
 604     unsigned tile, texdim;
 605
 606     tile = r300_texture_get_tile_size(tex, dim, TRUE);
 607     if (dim == TILE_WIDTH) {
 608         texdim = u_minify(tex->tex.width0, level);
 609     } else {
 610         texdim = u_minify(tex->tex.height0, level);
 611     }
 612
 613     /* See TX_FILTER1_n.MACRO_SWITCH. */
 614     if (rv350_mode) {
 615         return texdim >= tile;
 616     } else {
 617         return texdim > tile;
 618     }
 619 }
 620
 621 /**
 622  * Return the stride, in bytes, of the texture images of the given texture
 623  * at the given level.
 624  */
 625 unsigned r300_texture_get_stride(struct r300_screen* screen,
 626                                  struct r300_texture* tex, unsigned level)
 627 {
 628     unsigned tile_width, width;
 629
 630     if (tex->stride_override)
 631         return tex->stride_override;
 632
 633     /* Check the level. */
 634     if (level > tex->tex.last_level) {
 635         SCREEN_DBG(screen, DBG_TEX, "%s: level (%u) > last_level (%u)\n",
 636                    __FUNCTION__, level, tex->tex.last_level);
 637         return 0;
 638     }
 639
 640     width = u_minify(tex->tex.width0, level);
 641
 642     if (!util_format_is_compressed(tex->tex.format)) {
 643         tile_width = r300_texture_get_tile_size(tex, TILE_WIDTH,
 644                                                 tex->mip_macrotile[level]);
 645         width = align(width, tile_width);
 646
 647         return util_format_get_stride(tex->tex.format, width);
 648     } else {
 649         return align(util_format_get_stride(tex->tex.format, width), 32);
 650     }
 651 }
 652
 653 static unsigned r300_texture_get_nblocksy(struct r300_texture* tex,
 654                                           unsigned level)
 655 {
 656     unsigned height, tile_height;
 657
 658     height = u_minify(tex->tex.height0, level);
 659
 660     if (!util_format_is_compressed(tex->tex.format)) {
 661         tile_height = r300_texture_get_tile_size(tex, TILE_HEIGHT,
 662                                                  tex->mip_macrotile[level]);
 663         height = align(height, tile_height);
 664     }
 665
 666     return util_format_get_nblocksy(tex->tex.format, height);
 667 }
 668
 669 static void r300_setup_miptree(struct r300_screen* screen,
 670                                struct r300_texture* tex)
 671 {
 672     struct pipe_texture* base = &tex->tex;
 673     unsigned stride, size, layer_size, nblocksy, i;
 674     boolean rv350_mode = screen->caps->family >= CHIP_FAMILY_RV350;
 675
 676     SCREEN_DBG(screen, DBG_TEX, "r300: Making miptree for texture, format %s\n",
 677                util_format_name(base->format));
 678
 679     for (i = 0; i <= base->last_level; i++) {
 680         /* Let's see if this miplevel can be macrotiled. */
 681         tex->mip_macrotile[i] =
 682             (tex->macrotile == R300_BUFFER_TILED &&
 683              r300_texture_macro_switch(tex, i, rv350_mode, TILE_WIDTH)) ?
 684              R300_BUFFER_TILED : R300_BUFFER_LINEAR;
 685
 686         stride = r300_texture_get_stride(screen, tex, i);
 687         nblocksy = r300_texture_get_nblocksy(tex, i);
 688         layer_size = stride * nblocksy;
 689
 690         if (base->target == PIPE_TEXTURE_CUBE)
 691             size = layer_size * 6;
 692         else
 693             size = layer_size * u_minify(base->depth0, i);
 694
 695         tex->offset[i] = tex->size;
 696         tex->size = tex->offset[i] + size;
 697         tex->layer_size[i] = layer_size;
 698         tex->pitch[i] = stride / util_format_get_blocksize(base->format);
 699
 700         SCREEN_DBG(screen, DBG_TEX, "r300: Texture miptree: Level %d "
 701                 "(%dx%dx%d px, pitch %d bytes) %d bytes total, macrotiled %s\n",
 702                 i, u_minify(base->width0, i), u_minify(base->height0, i),
 703                 u_minify(base->depth0, i), stride, tex->size,
 704                 tex->mip_macrotile[i] ? "TRUE" : "FALSE");
 705     }
 706 }
 707
 708 static void r300_setup_flags(struct r300_texture* tex)
 709 {
 710     tex->is_npot = !util_is_power_of_two(tex->tex.width0) ||
 711                    !util_is_power_of_two(tex->tex.height0);
 712 }
 713
 714 static void r300_setup_tiling(struct pipe_screen *screen,
 715                               struct r300_texture *tex)
 716 {
 717     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 718     enum pipe_format format = tex->tex.format;
 719     boolean rv350_mode = r300_screen(screen)->caps->family >= CHIP_FAMILY_RV350;
 720
 721     if (util_format_is_compressed(format)) {
 722         return;
 723     }
 724
 725     if (tex->tex.width0 == 1 ||
 726         tex->tex.height0 == 1) {
 727         return;
 728     }
 729
 730     /* Set microtiling. */
 731     switch (util_format_get_blocksize(format)) {
 732         case 1:
 733         case 4:
 734             tex->microtile = R300_BUFFER_TILED;
 735             break;
 736
 737         case 2:
 738         case 8:
 739             if (rws->get_value(rws, R300_VID_SQUARE_TILING_SUPPORT)) {
 740                 tex->microtile = R300_BUFFER_SQUARETILED;
 741             }
 742             break;
 743     }
 744
 745     /* Set macrotiling. */
 746     if (r300_texture_macro_switch(tex, 0, rv350_mode, TILE_WIDTH) &&
 747         r300_texture_macro_switch(tex, 0, rv350_mode, TILE_HEIGHT)) {
 748         tex->macrotile = R300_BUFFER_TILED;
 749     }
 750 }
 751
 752 /* Create a new texture. */
 753 static struct pipe_texture* r300_texture_create(struct pipe_screen* screen,
 754                                          const struct pipe_texture* template)
 755 {
 756     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
 757     struct r300_screen* rscreen = r300_screen(screen);
 758     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 759
 760     if (!tex) {
 761         return NULL;
 762     }
 763
 764     tex->tex = *template;
 765     pipe_reference_init(&tex->tex.reference, 1);
 766     tex->tex.screen = screen;
 767
 768     r300_setup_flags(tex);
 769     if (!(template->tex_usage & R300_TEXTURE_USAGE_TRANSFER)) {
 770         r300_setup_tiling(screen, tex);
 771     }
 772     r300_setup_miptree(rscreen, tex);
 773     r300_setup_texture_state(rscreen, tex);
 774
 775     tex->buffer = rws->buffer_create(rws, 2048,
 776                                      PIPE_BUFFER_USAGE_PIXEL,
 777                                      tex->size);
 778     rws->buffer_set_tiling(rws, tex->buffer,
 779                            tex->pitch[0],
 780                            tex->microtile,
 781                            tex->macrotile);
 782
 783     if (!tex->buffer) {
 784         FREE(tex);
 785         return NULL;
 786     }
 787
 788     return (struct pipe_texture*)tex;
 789 }
 790
 791 static void r300_texture_destroy(struct pipe_texture* texture)
 792 {
 793     struct r300_texture* tex = (struct r300_texture*)texture;
 794     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)texture->screen->winsys;
 795
 796     rws->buffer_reference(rws, &tex->buffer, NULL);
 797     FREE(tex);
 798 }
 799
 800 static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 801                                                  struct pipe_texture* texture,
 802                                                  unsigned face,
 803                                                  unsigned level,
 804                                                  unsigned zslice,
 805                                                  unsigned flags)
 806 {
 807     struct r300_texture* tex = (struct r300_texture*)texture;
 808     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
 809     unsigned offset;
 810
 811     offset = r300_texture_get_offset(tex, level, zslice, face);
 812
 813     if (surface) {
 814         pipe_reference_init(&surface->reference, 1);
 815         pipe_texture_reference(&surface->texture, texture);
 816         surface->format = texture->format;
 817         surface->width = u_minify(texture->width0, level);
 818         surface->height = u_minify(texture->height0, level);
 819         surface->offset = offset;
 820         surface->usage = flags;
 821         surface->zslice = zslice;
 822         surface->texture = texture;
 823         surface->face = face;
 824         surface->level = level;
 825     }
 826
 827     return surface;
 828 }
 829
 830 static void r300_tex_surface_destroy(struct pipe_surface* s)
 831 {
 832     pipe_texture_reference(&s->texture, NULL);
 833     FREE(s);
 834 }
 835
 836
 837 static struct pipe_texture*
 838     r300_texture_from_handle(struct pipe_screen* screen,
 839                              const struct pipe_texture* base,
 840                              struct winsys_handle *whandle)
 841 {
 842     struct r300_winsys_screen *rws = (struct r300_winsys_screen*)screen->winsys;
 843     struct r300_screen* rscreen = r300_screen(screen);
 844     struct r300_winsys_buffer *buffer;
 845     struct r300_texture* tex;
 846     unsigned stride;
 847
 848     /* Support only 2D textures without mipmaps */
 849     if (base->target != PIPE_TEXTURE_2D ||
 850         base->depth0 != 1 ||
 851         base->last_level != 0) {
 852         return NULL;
 853     }
 854
 855     buffer = rws->buffer_from_handle(rws, screen, whandle, &stride);
 856     if (!buffer) {
 857         return NULL;
 858     }
 859
 860     tex = CALLOC_STRUCT(r300_texture);
 861     if (!tex) {
 862         return NULL;
 863     }
 864
 865     tex->tex = *base;
 866     pipe_reference_init(&tex->tex.reference, 1);
 867     tex->tex.screen = screen;
 868
 869     tex->stride_override = stride;
 870     tex->pitch[0] = stride / util_format_get_blocksize(base->format);
 871
 872     r300_setup_flags(tex);
 873     r300_setup_texture_state(rscreen, tex);
 874
 875     /* one ref already taken */
 876     tex->buffer = buffer;
 877
 878     return (struct pipe_texture*)tex;
 879 }
 880
 881 static boolean
 882     r300_texture_get_handle(struct pipe_screen* screen,
 883                             struct pipe_texture *texture,
 884                             struct winsys_handle *whandle)
 885 {
 886     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 887     struct r300_texture* tex = (struct r300_texture*)texture;
 888     unsigned stride;
 889
 890     if (!tex) {
 891         return FALSE;
 892     }
 893
 894     stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
 895
 896     rws->buffer_get_handle(rws, tex->buffer, stride, whandle);
 897
 898     return TRUE;
 899 }
 900
 901 static struct pipe_video_surface *
 902 r300_video_surface_create(struct pipe_screen *screen,
 903                           enum pipe_video_chroma_format chroma_format,
 904                           unsigned width, unsigned height)
 905 {
 906     struct r300_video_surface *r300_vsfc;
 907     struct pipe_texture template;
 908
 909     assert(screen);
 910     assert(width && height);
 911
 912     r300_vsfc = CALLOC_STRUCT(r300_video_surface);
 913     if (!r300_vsfc)
 914        return NULL;
 915
 916     pipe_reference_init(&r300_vsfc->base.reference, 1);
 917     r300_vsfc->base.screen = screen;
 918     r300_vsfc->base.chroma_format = chroma_format;
 919     r300_vsfc->base.width = width;
 920     r300_vsfc->base.height = height;
 921
 922     memset(&template, 0, sizeof(struct pipe_texture));
 923     template.target = PIPE_TEXTURE_2D;
 924     template.format = PIPE_FORMAT_B8G8R8X8_UNORM;
 925     template.last_level = 0;
 926     template.width0 = util_next_power_of_two(width);
 927     template.height0 = util_next_power_of_two(height);
 928     template.depth0 = 1;
 929     template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
 930                          PIPE_TEXTURE_USAGE_RENDER_TARGET;
 931
 932     r300_vsfc->tex = screen->texture_create(screen, &template);
 933     if (!r300_vsfc->tex)
 934     {
 935         FREE(r300_vsfc);
 936         return NULL;
 937     }
 938
 939     return &r300_vsfc->base;
 940 }
 941
 942 static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 943 {
 944     struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
 945     pipe_texture_reference(&r300_vsfc->tex, NULL);
 946     FREE(r300_vsfc);
 947 }
 948
 949 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 950 {
 951     screen->texture_create = r300_texture_create;
 952     screen->texture_from_handle = r300_texture_from_handle;
 953     screen->texture_get_handle = r300_texture_get_handle;
 954     screen->texture_destroy = r300_texture_destroy;
 955     screen->get_tex_surface = r300_get_tex_surface;
 956     screen->tex_surface_destroy = r300_tex_surface_destroy;
 957
 958     screen->video_surface_create = r300_video_surface_create;
 959     screen->video_surface_destroy= r300_video_surface_destroy;
 960 }
 961
 962 boolean r300_get_texture_buffer(struct pipe_screen* screen,
 963                                 struct pipe_texture* texture,
 964                                 struct r300_winsys_buffer** buffer,
 965                                 unsigned* stride)
 966 {
 967     struct r300_texture* tex = (struct r300_texture*)texture;
 968     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 969     struct r300_winsys_buffer *buf;
 970
 971     if (!tex) {
 972         return FALSE;
 973     }
 974
 975     rws->buffer_reference(rws, &buf, tex->buffer);
 976
 977     if (stride) {
 978         *stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
 979     }
 980
 981     *buffer = buf;
 982     return TRUE;
 983 }