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 /* Return true for non-compressed and non-YUV formats. */
  49 static boolean r300_format_is_plain(enum pipe_format format)
  50 {
  51     const struct util_format_description *desc = util_format_description(format);
  52
  53     if (!format) {
  54         return FALSE;
  55     }
  56
  57     return desc->layout == UTIL_FORMAT_LAYOUT_PLAIN;
  58 }
  59
  60 /* Translate a pipe_format into a useful texture format for sampling.
  61  *
  62  * Some special formats are translated directly using R300_EASY_TX_FORMAT,
  63  * but the majority of them is translated in a generic way, automatically
  64  * supporting all the formats hw can support.
  65  *
  66  * R300_EASY_TX_FORMAT swizzles the texture.
  67  * Note the signature of R300_EASY_TX_FORMAT:
  68  *   R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
  69  *
  70  * The FORMAT specifies how the texture sampler will treat the texture, and
  71  * makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
  72 static uint32_t r300_translate_texformat(enum pipe_format format)
  73 {
  74     uint32_t result = 0;
  75     const struct util_format_description *desc;
  76     unsigned i;
  77     boolean uniform = TRUE;
  78     const uint32_t swizzle_shift[4] = {
  79         R300_TX_FORMAT_R_SHIFT,
  80         R300_TX_FORMAT_G_SHIFT,
  81         R300_TX_FORMAT_B_SHIFT,
  82         R300_TX_FORMAT_A_SHIFT
  83     };
  84     const uint32_t swizzle[4] = {
  85         R300_TX_FORMAT_X,
  86         R300_TX_FORMAT_Y,
  87         R300_TX_FORMAT_Z,
  88         R300_TX_FORMAT_W
  89     };
  90     const uint32_t sign_bit[4] = {
  91         R300_TX_FORMAT_SIGNED_X,
  92         R300_TX_FORMAT_SIGNED_Y,
  93         R300_TX_FORMAT_SIGNED_Z,
  94         R300_TX_FORMAT_SIGNED_W,
  95     };
  96
  97     desc = util_format_description(format);
  98
  99     /* Colorspace (return non-RGB formats directly). */
 100     switch (desc->colorspace) {
 101         /* Depth stencil formats. */
 102         case UTIL_FORMAT_COLORSPACE_ZS:
 103             switch (format) {
 104                 case PIPE_FORMAT_Z16_UNORM:
 105                     return R300_EASY_TX_FORMAT(X, X, X, X, X16);
 106                 case PIPE_FORMAT_X8Z24_UNORM:
 107                 case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 108                     return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
 109                 default:
 110                     return ~0; /* Unsupported. */
 111             }
 112
 113         /* YUV formats. */
 114         case UTIL_FORMAT_COLORSPACE_YUV:
 115             result |= R300_TX_FORMAT_YUV_TO_RGB;
 116
 117             switch (format) {
 118                 case PIPE_FORMAT_UYVY:
 119                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
 120                 case PIPE_FORMAT_YUYV:
 121                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
 122                 default:
 123                     return ~0; /* Unsupported/unknown. */
 124             }
 125
 126         /* Add gamma correction. */
 127         case UTIL_FORMAT_COLORSPACE_SRGB:
 128             result |= R300_TX_FORMAT_GAMMA;
 129             break;
 130
 131         default:;
 132     }
 133
 134     /* Add swizzle. */
 135     for (i = 0; i < 4; i++) {
 136         switch (desc->swizzle[i]) {
 137             case UTIL_FORMAT_SWIZZLE_X:
 138             case UTIL_FORMAT_SWIZZLE_NONE:
 139                 result |= swizzle[0] << swizzle_shift[i];
 140                 break;
 141             case UTIL_FORMAT_SWIZZLE_Y:
 142                 result |= swizzle[1] << swizzle_shift[i];
 143                 break;
 144             case UTIL_FORMAT_SWIZZLE_Z:
 145                 result |= swizzle[2] << swizzle_shift[i];
 146                 break;
 147             case UTIL_FORMAT_SWIZZLE_W:
 148                 result |= swizzle[3] << swizzle_shift[i];
 149                 break;
 150             case UTIL_FORMAT_SWIZZLE_0:
 151                 result |= R300_TX_FORMAT_ZERO << swizzle_shift[i];
 152                 break;
 153             case UTIL_FORMAT_SWIZZLE_1:
 154                 result |= R300_TX_FORMAT_ONE << swizzle_shift[i];
 155                 break;
 156             default:
 157                 return ~0; /* Unsupported. */
 158         }
 159     }
 160
 161     /* S3TC formats. */
 162     if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 163         switch (format) {
 164             case PIPE_FORMAT_DXT1_RGB:
 165             case PIPE_FORMAT_DXT1_RGBA:
 166             case PIPE_FORMAT_DXT1_SRGB:
 167             case PIPE_FORMAT_DXT1_SRGBA:
 168                 return R300_TX_FORMAT_DXT1 | result;
 169             case PIPE_FORMAT_DXT3_RGBA:
 170             case PIPE_FORMAT_DXT3_SRGBA:
 171                 return R300_TX_FORMAT_DXT3 | result;
 172             case PIPE_FORMAT_DXT5_RGBA:
 173             case PIPE_FORMAT_DXT5_SRGBA:
 174                 return R300_TX_FORMAT_DXT5 | result;
 175             default:
 176                 return ~0; /* Unsupported/unknown. */
 177         }
 178     }
 179
 180     /* Add sign. */
 181     for (i = 0; i < desc->nr_channels; i++) {
 182         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 183             result |= sign_bit[i];
 184         }
 185     }
 186
 187     /* RGTC formats. */
 188     if (desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
 189         switch (format) {
 190             case PIPE_FORMAT_RGTC1_UNORM:
 191             case PIPE_FORMAT_RGTC1_SNORM:
 192                 return R500_TX_FORMAT_ATI1N | result;
 193             case PIPE_FORMAT_RGTC2_UNORM:
 194             case PIPE_FORMAT_RGTC2_SNORM:
 195                 return R400_TX_FORMAT_ATI2N | result;
 196             default:
 197                 return ~0; /* Unsupported/unknown. */
 198         }
 199     }
 200
 201     /* See whether the components are of the same size. */
 202     for (i = 1; i < desc->nr_channels; i++) {
 203         uniform = uniform && desc->channel[0].size == desc->channel[i].size;
 204     }
 205
 206     /* Non-uniform formats. */
 207     if (!uniform) {
 208         switch (desc->nr_channels) {
 209             case 3:
 210                 if (desc->channel[0].size == 5 &&
 211                     desc->channel[1].size == 6 &&
 212                     desc->channel[2].size == 5) {
 213                     return R300_TX_FORMAT_Z5Y6X5 | result;
 214                 }
 215                 if (desc->channel[0].size == 5 &&
 216                     desc->channel[1].size == 5 &&
 217                     desc->channel[2].size == 6) {
 218                     return R300_TX_FORMAT_Z6Y5X5 | result;
 219                 }
 220                 return ~0; /* Unsupported/unknown. */
 221
 222             case 4:
 223                 if (desc->channel[0].size == 5 &&
 224                     desc->channel[1].size == 5 &&
 225                     desc->channel[2].size == 5 &&
 226                     desc->channel[3].size == 1) {
 227                     return R300_TX_FORMAT_W1Z5Y5X5 | result;
 228                 }
 229                 if (desc->channel[0].size == 10 &&
 230                     desc->channel[1].size == 10 &&
 231                     desc->channel[2].size == 10 &&
 232                     desc->channel[3].size == 2) {
 233                     return R300_TX_FORMAT_W2Z10Y10X10 | result;
 234                 }
 235         }
 236         return ~0; /* Unsupported/unknown. */
 237     }
 238
 239     /* And finally, uniform formats. */
 240     switch (desc->channel[0].type) {
 241         case UTIL_FORMAT_TYPE_UNSIGNED:
 242         case UTIL_FORMAT_TYPE_SIGNED:
 243             if (!desc->channel[0].normalized &&
 244                 desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
 245                 return ~0;
 246             }
 247
 248             switch (desc->channel[0].size) {
 249                 case 4:
 250                     switch (desc->nr_channels) {
 251                         case 2:
 252                             return R300_TX_FORMAT_Y4X4 | result;
 253                         case 4:
 254                             return R300_TX_FORMAT_W4Z4Y4X4 | result;
 255                     }
 256                     return ~0;
 257
 258                 case 8:
 259                     switch (desc->nr_channels) {
 260                         case 1:
 261                             return R300_TX_FORMAT_X8 | result;
 262                         case 2:
 263                             return R300_TX_FORMAT_Y8X8 | result;
 264                         case 4:
 265                             return R300_TX_FORMAT_W8Z8Y8X8 | result;
 266                     }
 267                     return ~0;
 268
 269                 case 16:
 270                     switch (desc->nr_channels) {
 271                         case 1:
 272                             return R300_TX_FORMAT_X16 | result;
 273                         case 2:
 274                             return R300_TX_FORMAT_Y16X16 | result;
 275                         case 4:
 276                             return R300_TX_FORMAT_W16Z16Y16X16 | result;
 277                     }
 278             }
 279             return ~0;
 280
 281 /* XXX Enable float textures here. */
 282 #if 0
 283         case UTIL_FORMAT_TYPE_FLOAT:
 284             switch (desc->channel[0].size) {
 285                 case 16:
 286                     switch (desc->nr_channels) {
 287                         case 1:
 288                             return R300_TX_FORMAT_16F | result;
 289                         case 2:
 290                             return R300_TX_FORMAT_16F_16F | result;
 291                         case 4:
 292                             return R300_TX_FORMAT_16F_16F_16F_16F | result;
 293                     }
 294                     return ~0;
 295
 296                 case 32:
 297                     switch (desc->nr_channels) {
 298                         case 1:
 299                             return R300_TX_FORMAT_32F | result;
 300                         case 2:
 301                             return R300_TX_FORMAT_32F_32F | result;
 302                         case 4:
 303                             return R300_TX_FORMAT_32F_32F_32F_32F | result;
 304                     }
 305             }
 306 #endif
 307     }
 308
 309     return ~0; /* Unsupported/unknown. */
 310 }
 311
 312 static uint32_t r500_tx_format_msb_bit(enum pipe_format format)
 313 {
 314     switch (format) {
 315         case PIPE_FORMAT_RGTC1_UNORM:
 316         case PIPE_FORMAT_RGTC1_SNORM:
 317             return R500_TXFORMAT_MSB;
 318         default:
 319             return 0;
 320     }
 321 }
 322
 323 /* Buffer formats. */
 324
 325 /* Colorbuffer formats. This is the unswizzled format of the RB3D block's
 326  * output. For the swizzling of the targets, check the shader's format. */
 327 static uint32_t r300_translate_colorformat(enum pipe_format format)
 328 {
 329     switch (format) {
 330         /* 8-bit buffers. */
 331         case PIPE_FORMAT_A8_UNORM:
 332         case PIPE_FORMAT_I8_UNORM:
 333         case PIPE_FORMAT_L8_UNORM:
 334         case PIPE_FORMAT_R8_UNORM:
 335         case PIPE_FORMAT_R8_SNORM:
 336             return R300_COLOR_FORMAT_I8;
 337
 338         /* 16-bit buffers. */
 339         case PIPE_FORMAT_B5G6R5_UNORM:
 340             return R300_COLOR_FORMAT_RGB565;
 341         case PIPE_FORMAT_B5G5R5A1_UNORM:
 342         case PIPE_FORMAT_B5G5R5X1_UNORM:
 343             return R300_COLOR_FORMAT_ARGB1555;
 344         case PIPE_FORMAT_B4G4R4A4_UNORM:
 345             return R300_COLOR_FORMAT_ARGB4444;
 346
 347         /* 32-bit buffers. */
 348         case PIPE_FORMAT_B8G8R8A8_UNORM:
 349         case PIPE_FORMAT_B8G8R8X8_UNORM:
 350         case PIPE_FORMAT_A8R8G8B8_UNORM:
 351         case PIPE_FORMAT_X8R8G8B8_UNORM:
 352         case PIPE_FORMAT_A8B8G8R8_UNORM:
 353         case PIPE_FORMAT_R8G8B8A8_SNORM:
 354         case PIPE_FORMAT_X8B8G8R8_UNORM:
 355         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 356             return R300_COLOR_FORMAT_ARGB8888;
 357         case PIPE_FORMAT_R10G10B10A2_UNORM:
 358             return R500_COLOR_FORMAT_ARGB2101010;  /* R5xx-only? */
 359
 360         /* 64-bit buffers. */
 361         case PIPE_FORMAT_R16G16B16A16_UNORM:
 362         case PIPE_FORMAT_R16G16B16A16_SNORM:
 363         //case PIPE_FORMAT_R16G16B16A16_FLOAT: /* not in pipe_format */
 364             return R300_COLOR_FORMAT_ARGB16161616;
 365
 366 /* XXX Enable float textures here. */
 367 #if 0
 368         /* 128-bit buffers. */
 369         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 370             return R300_COLOR_FORMAT_ARGB32323232;
 371 #endif
 372
 373         /* YUV buffers. */
 374         case PIPE_FORMAT_UYVY:
 375             return R300_COLOR_FORMAT_YVYU;
 376         case PIPE_FORMAT_YUYV:
 377             return R300_COLOR_FORMAT_VYUY;
 378         default:
 379             return ~0; /* Unsupported. */
 380     }
 381 }
 382
 383 /* Depthbuffer and stencilbuffer. Thankfully, we only support two flavors. */
 384 static uint32_t r300_translate_zsformat(enum pipe_format format)
 385 {
 386     switch (format) {
 387         /* 16-bit depth, no stencil */
 388         case PIPE_FORMAT_Z16_UNORM:
 389             return R300_DEPTHFORMAT_16BIT_INT_Z;
 390         /* 24-bit depth, ignored stencil */
 391         case PIPE_FORMAT_X8Z24_UNORM:
 392         /* 24-bit depth, 8-bit stencil */
 393         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 394             return R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
 395         default:
 396             return ~0; /* Unsupported. */
 397     }
 398 }
 399
 400 /* Shader output formats. This is essentially the swizzle from the shader
 401  * to the RB3D block.
 402  *
 403  * Note that formats are stored from C3 to C0. */
 404 static uint32_t r300_translate_out_fmt(enum pipe_format format)
 405 {
 406     uint32_t modifier = 0;
 407     unsigned i;
 408     const struct util_format_description *desc;
 409     static const uint32_t sign_bit[4] = {
 410         R300_OUT_SIGN(0x1),
 411         R300_OUT_SIGN(0x2),
 412         R300_OUT_SIGN(0x4),
 413         R300_OUT_SIGN(0x8),
 414     };
 415
 416     desc = util_format_description(format);
 417
 418     /* Specifies how the shader output is written to the fog unit. */
 419     if (desc->channel[0].type == UTIL_FORMAT_TYPE_FLOAT) {
 420         if (desc->channel[0].size == 32) {
 421             modifier |= R300_US_OUT_FMT_C4_32_FP;
 422         } else {
 423             modifier |= R300_US_OUT_FMT_C4_16_FP;
 424         }
 425     } else {
 426         if (desc->channel[0].size == 16) {
 427             modifier |= R300_US_OUT_FMT_C4_16;
 428         } else {
 429             /* C4_8 seems to be used for the formats whose pixel size
 430              * is <= 32 bits. */
 431             modifier |= R300_US_OUT_FMT_C4_8;
 432         }
 433     }
 434
 435     /* Add sign. */
 436     for (i = 0; i < 4; i++)
 437         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 438             modifier |= sign_bit[i];
 439         }
 440
 441     /* Add swizzles and return. */
 442     switch (format) {
 443         /* 8-bit outputs.
 444          * COLORFORMAT_I8 stores the C2 component. */
 445         case PIPE_FORMAT_A8_UNORM:
 446             return modifier | R300_C2_SEL_A;
 447         case PIPE_FORMAT_I8_UNORM:
 448         case PIPE_FORMAT_L8_UNORM:
 449         case PIPE_FORMAT_R8_UNORM:
 450         case PIPE_FORMAT_R8_SNORM:
 451             return modifier | R300_C2_SEL_R;
 452
 453         /* BGRA outputs. */
 454         case PIPE_FORMAT_B5G6R5_UNORM:
 455         case PIPE_FORMAT_B5G5R5A1_UNORM:
 456         case PIPE_FORMAT_B5G5R5X1_UNORM:
 457         case PIPE_FORMAT_B4G4R4A4_UNORM:
 458         case PIPE_FORMAT_B8G8R8A8_UNORM:
 459         case PIPE_FORMAT_B8G8R8X8_UNORM:
 460             return modifier |
 461                 R300_C0_SEL_B | R300_C1_SEL_G |
 462                 R300_C2_SEL_R | R300_C3_SEL_A;
 463
 464         /* ARGB outputs. */
 465         case PIPE_FORMAT_A8R8G8B8_UNORM:
 466         case PIPE_FORMAT_X8R8G8B8_UNORM:
 467             return modifier |
 468                 R300_C0_SEL_A | R300_C1_SEL_R |
 469                 R300_C2_SEL_G | R300_C3_SEL_B;
 470
 471         /* ABGR outputs. */
 472         case PIPE_FORMAT_A8B8G8R8_UNORM:
 473         case PIPE_FORMAT_X8B8G8R8_UNORM:
 474             return modifier |
 475                 R300_C0_SEL_A | R300_C1_SEL_B |
 476                 R300_C2_SEL_G | R300_C3_SEL_R;
 477
 478         /* RGBA outputs. */
 479         case PIPE_FORMAT_R8G8B8A8_SNORM:
 480         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 481         case PIPE_FORMAT_R10G10B10A2_UNORM:
 482         case PIPE_FORMAT_R16G16B16A16_UNORM:
 483         case PIPE_FORMAT_R16G16B16A16_SNORM:
 484         //case PIPE_FORMAT_R16G16B16A16_FLOAT: /* not in pipe_format */
 485         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 486             return modifier |
 487                 R300_C0_SEL_R | R300_C1_SEL_G |
 488                 R300_C2_SEL_B | R300_C3_SEL_A;
 489
 490         default:
 491             return ~0; /* Unsupported. */
 492     }
 493 }
 494
 495 boolean r300_is_colorbuffer_format_supported(enum pipe_format format)
 496 {
 497     return r300_translate_colorformat(format) != ~0 &&
 498            r300_translate_out_fmt(format) != ~0;
 499 }
 500
 501 boolean r300_is_zs_format_supported(enum pipe_format format)
 502 {
 503     return r300_translate_zsformat(format) != ~0;
 504 }
 505
 506 boolean r300_is_sampler_format_supported(enum pipe_format format)
 507 {
 508     return r300_translate_texformat(format) != ~0;
 509 }
 510
 511 static void r300_setup_texture_state(struct r300_screen* screen, struct r300_texture* tex)
 512 {
 513     struct r300_texture_format_state* state = &tex->state;
 514     struct pipe_texture *pt = &tex->tex;
 515     unsigned i;
 516     boolean is_r500 = screen->caps->is_r500;
 517
 518     /* Set sampler state. */
 519     state->format0 = R300_TX_WIDTH((pt->width0 - 1) & 0x7ff) |
 520                      R300_TX_HEIGHT((pt->height0 - 1) & 0x7ff);
 521
 522     if (tex->is_npot) {
 523         /* rectangles love this */
 524         state->format0 |= R300_TX_PITCH_EN;
 525         state->format2 = (tex->pitch[0] - 1) & 0x1fff;
 526     } else {
 527         /* power of two textures (3D, mipmaps, and no pitch) */
 528         state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth0) & 0xf);
 529     }
 530
 531     state->format1 = r300_translate_texformat(pt->format);
 532     if (pt->target == PIPE_TEXTURE_CUBE) {
 533         state->format1 |= R300_TX_FORMAT_CUBIC_MAP;
 534     }
 535     if (pt->target == PIPE_TEXTURE_3D) {
 536         state->format1 |= R300_TX_FORMAT_3D;
 537     }
 538
 539     /* large textures on r500 */
 540     if (is_r500)
 541     {
 542         if (pt->width0 > 2048) {
 543             state->format2 |= R500_TXWIDTH_BIT11;
 544         }
 545         if (pt->height0 > 2048) {
 546             state->format2 |= R500_TXHEIGHT_BIT11;
 547         }
 548         state->format2 |= r500_tx_format_msb_bit(pt->format);
 549     }
 550
 551     SCREEN_DBG(screen, DBG_TEX, "r300: Set texture state (%dx%d, %d levels)\n",
 552                pt->width0, pt->height0, pt->last_level);
 553
 554     /* Set framebuffer state. */
 555     if (util_format_is_depth_or_stencil(tex->tex.format)) {
 556         for (i = 0; i <= tex->tex.last_level; i++) {
 557             tex->fb_state.depthpitch[i] =
 558                 tex->pitch[i] |
 559                 R300_DEPTHMACROTILE(tex->mip_macrotile[i]) |
 560                 R300_DEPTHMICROTILE(tex->microtile);
 561         }
 562         tex->fb_state.zb_format = r300_translate_zsformat(tex->tex.format);
 563     } else {
 564         for (i = 0; i <= tex->tex.last_level; i++) {
 565             tex->fb_state.colorpitch[i] =
 566                 tex->pitch[i] |
 567                 r300_translate_colorformat(tex->tex.format) |
 568                 R300_COLOR_TILE(tex->mip_macrotile[i]) |
 569                 R300_COLOR_MICROTILE(tex->microtile);
 570         }
 571         tex->fb_state.us_out_fmt = r300_translate_out_fmt(tex->tex.format);
 572     }
 573 }
 574
 575 void r300_texture_reinterpret_format(struct pipe_screen *screen,
 576                                      struct pipe_texture *tex,
 577                                      enum pipe_format new_format)
 578 {
 579     struct r300_screen *r300screen = r300_screen(screen);
 580
 581     SCREEN_DBG(r300screen, DBG_TEX, "r300: Reinterpreting format: %s -> %s\n",
 582                util_format_name(tex->format), util_format_name(new_format));
 583
 584     tex->format = new_format;
 585
 586     r300_setup_texture_state(r300_screen(screen), (struct r300_texture*)tex);
 587 }
 588
 589 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
 590                                  unsigned zslice, unsigned face)
 591 {
 592     unsigned offset = tex->offset[level];
 593
 594     switch (tex->tex.target) {
 595         case PIPE_TEXTURE_3D:
 596             assert(face == 0);
 597             return offset + zslice * tex->layer_size[level];
 598
 599         case PIPE_TEXTURE_CUBE:
 600             assert(zslice == 0);
 601             return offset + face * tex->layer_size[level];
 602
 603         default:
 604             assert(zslice == 0 && face == 0);
 605             return offset;
 606     }
 607 }
 608
 609 /**
 610  * Return the width (dim==TILE_WIDTH) or height (dim==TILE_HEIGHT) of one tile
 611  * of the given texture.
 612  */
 613 static unsigned r300_texture_get_tile_size(struct r300_texture* tex,
 614                                            int dim, boolean macrotile)
 615 {
 616     unsigned pixsize, tile_size;
 617
 618     pixsize = util_format_get_blocksize(tex->tex.format);
 619     tile_size = microblock_table[util_logbase2(pixsize)][tex->microtile][dim];
 620
 621     if (macrotile) {
 622         tile_size *= 8;
 623     }
 624
 625     assert(tile_size);
 626     return tile_size;
 627 }
 628
 629 /* Return true if macrotiling should be enabled on the miplevel. */
 630 static boolean r300_texture_macro_switch(struct r300_texture *tex,
 631                                          unsigned level,
 632                                          boolean rv350_mode,
 633                                          int dim)
 634 {
 635     unsigned tile, texdim;
 636
 637     tile = r300_texture_get_tile_size(tex, dim, TRUE);
 638     if (dim == TILE_WIDTH) {
 639         texdim = u_minify(tex->tex.width0, level);
 640     } else {
 641         texdim = u_minify(tex->tex.height0, level);
 642     }
 643
 644     /* See TX_FILTER1_n.MACRO_SWITCH. */
 645     if (rv350_mode) {
 646         return texdim >= tile;
 647     } else {
 648         return texdim > tile;
 649     }
 650 }
 651
 652 /**
 653  * Return the stride, in bytes, of the texture images of the given texture
 654  * at the given level.
 655  */
 656 unsigned r300_texture_get_stride(struct r300_screen* screen,
 657                                  struct r300_texture* tex, unsigned level)
 658 {
 659     unsigned tile_width, width;
 660
 661     if (tex->stride_override)
 662         return tex->stride_override;
 663
 664     /* Check the level. */
 665     if (level > tex->tex.last_level) {
 666         SCREEN_DBG(screen, DBG_TEX, "%s: level (%u) > last_level (%u)\n",
 667                    __FUNCTION__, level, tex->tex.last_level);
 668         return 0;
 669     }
 670
 671     width = u_minify(tex->tex.width0, level);
 672
 673     if (r300_format_is_plain(tex->tex.format)) {
 674         tile_width = r300_texture_get_tile_size(tex, TILE_WIDTH,
 675                                                 tex->mip_macrotile[level]);
 676         width = align(width, tile_width);
 677
 678         return util_format_get_stride(tex->tex.format, width);
 679     } else {
 680         return align(util_format_get_stride(tex->tex.format, width), 32);
 681     }
 682 }
 683
 684 static unsigned r300_texture_get_nblocksy(struct r300_texture* tex,
 685                                           unsigned level)
 686 {
 687     unsigned height, tile_height;
 688
 689     height = u_minify(tex->tex.height0, level);
 690
 691     if (r300_format_is_plain(tex->tex.format)) {
 692         tile_height = r300_texture_get_tile_size(tex, TILE_HEIGHT,
 693                                                  tex->mip_macrotile[level]);
 694         height = align(height, tile_height);
 695     }
 696
 697     return util_format_get_nblocksy(tex->tex.format, height);
 698 }
 699
 700 static void r300_setup_miptree(struct r300_screen* screen,
 701                                struct r300_texture* tex)
 702 {
 703     struct pipe_texture* base = &tex->tex;
 704     unsigned stride, size, layer_size, nblocksy, i;
 705     boolean rv350_mode = screen->caps->family >= CHIP_FAMILY_RV350;
 706
 707     SCREEN_DBG(screen, DBG_TEX, "r300: Making miptree for texture, format %s\n",
 708                util_format_name(base->format));
 709
 710     for (i = 0; i <= base->last_level; i++) {
 711         /* Let's see if this miplevel can be macrotiled. */
 712         tex->mip_macrotile[i] =
 713             (tex->macrotile == R300_BUFFER_TILED &&
 714              r300_texture_macro_switch(tex, i, rv350_mode, TILE_WIDTH) &&
 715              r300_texture_macro_switch(tex, i, rv350_mode, TILE_HEIGHT)) ?
 716              R300_BUFFER_TILED : R300_BUFFER_LINEAR;
 717
 718         stride = r300_texture_get_stride(screen, tex, i);
 719         nblocksy = r300_texture_get_nblocksy(tex, i);
 720         layer_size = stride * nblocksy;
 721
 722         if (base->target == PIPE_TEXTURE_CUBE)
 723             size = layer_size * 6;
 724         else
 725             size = layer_size * u_minify(base->depth0, i);
 726
 727         tex->offset[i] = tex->size;
 728         tex->size = tex->offset[i] + size;
 729         tex->layer_size[i] = layer_size;
 730         tex->pitch[i] = stride / util_format_get_blocksize(base->format);
 731
 732         SCREEN_DBG(screen, DBG_TEX, "r300: Texture miptree: Level %d "
 733                 "(%dx%dx%d px, pitch %d bytes) %d bytes total, macrotiled %s\n",
 734                 i, u_minify(base->width0, i), u_minify(base->height0, i),
 735                 u_minify(base->depth0, i), stride, tex->size,
 736                 tex->mip_macrotile[i] ? "TRUE" : "FALSE");
 737     }
 738 }
 739
 740 static void r300_setup_flags(struct r300_texture* tex)
 741 {
 742     tex->is_npot = !util_is_power_of_two(tex->tex.width0) ||
 743                    !util_is_power_of_two(tex->tex.height0);
 744 }
 745
 746 static void r300_setup_tiling(struct pipe_screen *screen,
 747                               struct r300_texture *tex)
 748 {
 749     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 750     enum pipe_format format = tex->tex.format;
 751     boolean rv350_mode = r300_screen(screen)->caps->family >= CHIP_FAMILY_RV350;
 752
 753     if (!r300_format_is_plain(format)) {
 754         return;
 755     }
 756
 757     if (tex->tex.width0 == 1 ||
 758         tex->tex.height0 == 1) {
 759         return;
 760     }
 761
 762     /* Set microtiling. */
 763     switch (util_format_get_blocksize(format)) {
 764         case 1:
 765         case 4:
 766             tex->microtile = R300_BUFFER_TILED;
 767             break;
 768
 769         case 2:
 770         case 8:
 771             if (rws->get_value(rws, R300_VID_SQUARE_TILING_SUPPORT)) {
 772                 tex->microtile = R300_BUFFER_SQUARETILED;
 773             }
 774             break;
 775     }
 776
 777     /* Set macrotiling. */
 778     if (r300_texture_macro_switch(tex, 0, rv350_mode, TILE_WIDTH) &&
 779         r300_texture_macro_switch(tex, 0, rv350_mode, TILE_HEIGHT)) {
 780         tex->macrotile = R300_BUFFER_TILED;
 781     }
 782 }
 783
 784 /* Create a new texture. */
 785 static struct pipe_texture* r300_texture_create(struct pipe_screen* screen,
 786                                          const struct pipe_texture* template)
 787 {
 788     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
 789     struct r300_screen* rscreen = r300_screen(screen);
 790     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 791
 792     if (!tex) {
 793         return NULL;
 794     }
 795
 796     tex->tex = *template;
 797     pipe_reference_init(&tex->tex.reference, 1);
 798     tex->tex.screen = screen;
 799
 800     r300_setup_flags(tex);
 801     if (!(template->tex_usage & R300_TEXTURE_USAGE_TRANSFER)) {
 802         r300_setup_tiling(screen, tex);
 803     }
 804     r300_setup_miptree(rscreen, tex);
 805     r300_setup_texture_state(rscreen, tex);
 806
 807     tex->buffer = rws->buffer_create(rws, 2048,
 808                                      PIPE_BUFFER_USAGE_PIXEL,
 809                                      tex->size);
 810     rws->buffer_set_tiling(rws, tex->buffer,
 811                            tex->pitch[0],
 812                            tex->microtile,
 813                            tex->macrotile);
 814
 815     if (!tex->buffer) {
 816         FREE(tex);
 817         return NULL;
 818     }
 819
 820     return (struct pipe_texture*)tex;
 821 }
 822
 823 static void r300_texture_destroy(struct pipe_texture* texture)
 824 {
 825     struct r300_texture* tex = (struct r300_texture*)texture;
 826     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)texture->screen->winsys;
 827
 828     rws->buffer_reference(rws, &tex->buffer, NULL);
 829     FREE(tex);
 830 }
 831
 832 static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 833                                                  struct pipe_texture* texture,
 834                                                  unsigned face,
 835                                                  unsigned level,
 836                                                  unsigned zslice,
 837                                                  unsigned flags)
 838 {
 839     struct r300_texture* tex = (struct r300_texture*)texture;
 840     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
 841     unsigned offset;
 842
 843     offset = r300_texture_get_offset(tex, level, zslice, face);
 844
 845     if (surface) {
 846         pipe_reference_init(&surface->reference, 1);
 847         pipe_texture_reference(&surface->texture, texture);
 848         surface->format = texture->format;
 849         surface->width = u_minify(texture->width0, level);
 850         surface->height = u_minify(texture->height0, level);
 851         surface->offset = offset;
 852         surface->usage = flags;
 853         surface->zslice = zslice;
 854         surface->texture = texture;
 855         surface->face = face;
 856         surface->level = level;
 857     }
 858
 859     return surface;
 860 }
 861
 862 static void r300_tex_surface_destroy(struct pipe_surface* s)
 863 {
 864     pipe_texture_reference(&s->texture, NULL);
 865     FREE(s);
 866 }
 867
 868
 869 static struct pipe_texture*
 870     r300_texture_from_handle(struct pipe_screen* screen,
 871                              const struct pipe_texture* base,
 872                              struct winsys_handle *whandle)
 873 {
 874     struct r300_winsys_screen *rws = (struct r300_winsys_screen*)screen->winsys;
 875     struct r300_screen* rscreen = r300_screen(screen);
 876     struct r300_winsys_buffer *buffer;
 877     struct r300_texture* tex;
 878     unsigned stride;
 879
 880     /* Support only 2D textures without mipmaps */
 881     if (base->target != PIPE_TEXTURE_2D ||
 882         base->depth0 != 1 ||
 883         base->last_level != 0) {
 884         return NULL;
 885     }
 886
 887     buffer = rws->buffer_from_handle(rws, screen, whandle, &stride);
 888     if (!buffer) {
 889         return NULL;
 890     }
 891
 892     tex = CALLOC_STRUCT(r300_texture);
 893     if (!tex) {
 894         return NULL;
 895     }
 896
 897     tex->tex = *base;
 898     pipe_reference_init(&tex->tex.reference, 1);
 899     tex->tex.screen = screen;
 900
 901     tex->stride_override = stride;
 902     tex->pitch[0] = stride / util_format_get_blocksize(base->format);
 903
 904     r300_setup_flags(tex);
 905     r300_setup_texture_state(rscreen, tex);
 906
 907     /* one ref already taken */
 908     tex->buffer = buffer;
 909
 910     return (struct pipe_texture*)tex;
 911 }
 912
 913 static boolean
 914     r300_texture_get_handle(struct pipe_screen* screen,
 915                             struct pipe_texture *texture,
 916                             struct winsys_handle *whandle)
 917 {
 918     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 919     struct r300_texture* tex = (struct r300_texture*)texture;
 920     unsigned stride;
 921
 922     if (!tex) {
 923         return FALSE;
 924     }
 925
 926     stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
 927
 928     rws->buffer_get_handle(rws, tex->buffer, stride, whandle);
 929
 930     return TRUE;
 931 }
 932
 933 static struct pipe_video_surface *
 934 r300_video_surface_create(struct pipe_screen *screen,
 935                           enum pipe_video_chroma_format chroma_format,
 936                           unsigned width, unsigned height)
 937 {
 938     struct r300_video_surface *r300_vsfc;
 939     struct pipe_texture template;
 940
 941     assert(screen);
 942     assert(width && height);
 943
 944     r300_vsfc = CALLOC_STRUCT(r300_video_surface);
 945     if (!r300_vsfc)
 946        return NULL;
 947
 948     pipe_reference_init(&r300_vsfc->base.reference, 1);
 949     r300_vsfc->base.screen = screen;
 950     r300_vsfc->base.chroma_format = chroma_format;
 951     r300_vsfc->base.width = width;
 952     r300_vsfc->base.height = height;
 953
 954     memset(&template, 0, sizeof(struct pipe_texture));
 955     template.target = PIPE_TEXTURE_2D;
 956     template.format = PIPE_FORMAT_B8G8R8X8_UNORM;
 957     template.last_level = 0;
 958     template.width0 = util_next_power_of_two(width);
 959     template.height0 = util_next_power_of_two(height);
 960     template.depth0 = 1;
 961     template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
 962                          PIPE_TEXTURE_USAGE_RENDER_TARGET;
 963
 964     r300_vsfc->tex = screen->texture_create(screen, &template);
 965     if (!r300_vsfc->tex)
 966     {
 967         FREE(r300_vsfc);
 968         return NULL;
 969     }
 970
 971     return &r300_vsfc->base;
 972 }
 973
 974 static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 975 {
 976     struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
 977     pipe_texture_reference(&r300_vsfc->tex, NULL);
 978     FREE(r300_vsfc);
 979 }
 980
 981 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 982 {
 983     screen->texture_create = r300_texture_create;
 984     screen->texture_from_handle = r300_texture_from_handle;
 985     screen->texture_get_handle = r300_texture_get_handle;
 986     screen->texture_destroy = r300_texture_destroy;
 987     screen->get_tex_surface = r300_get_tex_surface;
 988     screen->tex_surface_destroy = r300_tex_surface_destroy;
 989
 990     screen->video_surface_create = r300_video_surface_create;
 991     screen->video_surface_destroy= r300_video_surface_destroy;
 992 }
 993
 994 boolean r300_get_texture_buffer(struct pipe_screen* screen,
 995                                 struct pipe_texture* texture,
 996                                 struct r300_winsys_buffer** buffer,
 997                                 unsigned* stride)
 998 {
 999     struct r300_texture* tex = (struct r300_texture*)texture;
1000     struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
1001     struct r300_winsys_buffer *buf;
1002
1003     if (!tex) {
1004         return FALSE;
1005     }
1006
1007     rws->buffer_reference(rws, &buf, tex->buffer);
1008
1009     if (stride) {
1010         *stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
1011     }
1012
1013     *buffer = buf;
1014     return TRUE;
1015 }