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
  35 #include "radeon_winsys.h"
  36
  37 #define TILE_WIDTH 0
  38 #define TILE_HEIGHT 1
  39
  40 static const unsigned microblock_table[5][3][2] = {
  41     /*linear  tiled   square-tiled */
  42     {{32, 1}, {8, 4}, {0, 0}}, /*   8 bits per pixel */
  43     {{16, 1}, {8, 2}, {4, 4}}, /*  16 bits per pixel */
  44     {{ 8, 1}, {4, 2}, {0, 0}}, /*  32 bits per pixel */
  45     {{ 4, 1}, {0, 0}, {2, 2}}, /*  64 bits per pixel */
  46     {{ 2, 1}, {0, 0}, {0, 0}}  /* 128 bits per pixel */
  47 };
  48
  49 /* Translate a pipe_format into a useful texture format for sampling.
  50  *
  51  * Some special formats are translated directly using R300_EASY_TX_FORMAT,
  52  * but the majority of them is translated in a generic way, automatically
  53  * supporting all the formats hw can support.
  54  *
  55  * R300_EASY_TX_FORMAT swizzles the texture.
  56  * Note the signature of R300_EASY_TX_FORMAT:
  57  *   R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
  58  *
  59  * The FORMAT specifies how the texture sampler will treat the texture, and
  60  * makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
  61 static uint32_t r300_translate_texformat(enum pipe_format format)
  62 {
  63     uint32_t result = 0;
  64     const struct util_format_description *desc;
  65     unsigned components = 0, i;
  66     boolean uniform = TRUE;
  67     const uint32_t swizzle_shift[4] = {
  68         R300_TX_FORMAT_R_SHIFT,
  69         R300_TX_FORMAT_G_SHIFT,
  70         R300_TX_FORMAT_B_SHIFT,
  71         R300_TX_FORMAT_A_SHIFT
  72     };
  73     const uint32_t swizzle[4] = {
  74         R300_TX_FORMAT_X,
  75         R300_TX_FORMAT_Y,
  76         R300_TX_FORMAT_Z,
  77         R300_TX_FORMAT_W
  78     };
  79     const uint32_t sign_bit[4] = {
  80         R300_TX_FORMAT_SIGNED_X,
  81         R300_TX_FORMAT_SIGNED_Y,
  82         R300_TX_FORMAT_SIGNED_Z,
  83         R300_TX_FORMAT_SIGNED_W,
  84     };
  85
  86     desc = util_format_description(format);
  87
  88     /* Colorspace (return non-RGB formats directly). */
  89     switch (desc->colorspace) {
  90         /* Depth stencil formats. */
  91         case UTIL_FORMAT_COLORSPACE_ZS:
  92             switch (format) {
  93                 case PIPE_FORMAT_Z16_UNORM:
  94                     return R300_EASY_TX_FORMAT(X, X, X, X, X16);
  95                 case PIPE_FORMAT_Z24X8_UNORM:
  96                 case PIPE_FORMAT_Z24S8_UNORM:
  97                     return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
  98                 default:
  99                     return ~0; /* Unsupported. */
 100             }
 101
 102         /* YUV formats. */
 103         case UTIL_FORMAT_COLORSPACE_YUV:
 104             result |= R300_TX_FORMAT_YUV_TO_RGB;
 105
 106             switch (format) {
 107                 case PIPE_FORMAT_YCBCR:
 108                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
 109                 case PIPE_FORMAT_YCBCR_REV:
 110                     return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
 111                 default:
 112                     return ~0; /* Unsupported/unknown. */
 113             }
 114
 115         /* Add gamma correction. */
 116         case UTIL_FORMAT_COLORSPACE_SRGB:
 117             result |= R300_TX_FORMAT_GAMMA;
 118             break;
 119
 120         default:;
 121     }
 122
 123     /* Add swizzle. */
 124     for (i = 0; i < 4; i++) {
 125         switch (desc->swizzle[i]) {
 126             case UTIL_FORMAT_SWIZZLE_X:
 127             case UTIL_FORMAT_SWIZZLE_NONE:
 128                 result |= swizzle[0] << swizzle_shift[i];
 129                 break;
 130             case UTIL_FORMAT_SWIZZLE_Y:
 131                 result |= swizzle[1] << swizzle_shift[i];
 132                 break;
 133             case UTIL_FORMAT_SWIZZLE_Z:
 134                 result |= swizzle[2] << swizzle_shift[i];
 135                 break;
 136             case UTIL_FORMAT_SWIZZLE_W:
 137                 result |= swizzle[3] << swizzle_shift[i];
 138                 break;
 139             case UTIL_FORMAT_SWIZZLE_0:
 140                 result |= R300_TX_FORMAT_ZERO << swizzle_shift[i];
 141                 break;
 142             case UTIL_FORMAT_SWIZZLE_1:
 143                 result |= R300_TX_FORMAT_ONE << swizzle_shift[i];
 144                 break;
 145             default:
 146                 return ~0; /* Unsupported. */
 147         }
 148     }
 149
 150     /* Compressed formats. */
 151     if (desc->layout == UTIL_FORMAT_LAYOUT_COMPRESSED) {
 152         switch (format) {
 153             case PIPE_FORMAT_DXT1_RGB:
 154             case PIPE_FORMAT_DXT1_RGBA:
 155             case PIPE_FORMAT_DXT1_SRGB:
 156             case PIPE_FORMAT_DXT1_SRGBA:
 157                 return R300_TX_FORMAT_DXT1 | result;
 158             case PIPE_FORMAT_DXT3_RGBA:
 159             case PIPE_FORMAT_DXT3_SRGBA:
 160                 return R300_TX_FORMAT_DXT3 | result;
 161             case PIPE_FORMAT_DXT5_RGBA:
 162             case PIPE_FORMAT_DXT5_SRGBA:
 163                 return R300_TX_FORMAT_DXT5 | result;
 164             default:
 165                 return ~0; /* Unsupported/unknown. */
 166         }
 167     }
 168
 169     /* Get the number of components. */
 170     for (i = 0; i < 4; i++) {
 171         if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 172             ++components;
 173         }
 174     }
 175
 176     /* Add sign. */
 177     for (i = 0; i < components; i++) {
 178         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 179             result |= sign_bit[i];
 180         }
 181     }
 182
 183     /* See whether the components are of the same size. */
 184     for (i = 1; i < components; i++) {
 185         uniform = uniform && desc->channel[0].size == desc->channel[i].size;
 186     }
 187
 188     /* Non-uniform formats. */
 189     if (!uniform) {
 190         switch (components) {
 191             case 3:
 192                 if (desc->channel[0].size == 5 &&
 193                     desc->channel[1].size == 6 &&
 194                     desc->channel[2].size == 5) {
 195                     return R300_TX_FORMAT_Z5Y6X5 | result;
 196                 }
 197                 if (desc->channel[0].size == 5 &&
 198                     desc->channel[1].size == 5 &&
 199                     desc->channel[2].size == 6) {
 200                     return R300_TX_FORMAT_Z6Y5X5 | result;
 201                 }
 202                 return ~0; /* Unsupported/unknown. */
 203
 204             case 4:
 205                 if (desc->channel[0].size == 5 &&
 206                     desc->channel[1].size == 5 &&
 207                     desc->channel[2].size == 5 &&
 208                     desc->channel[3].size == 1) {
 209                     return R300_TX_FORMAT_W1Z5Y5X5 | result;
 210                 }
 211                 if (desc->channel[0].size == 10 &&
 212                     desc->channel[1].size == 10 &&
 213                     desc->channel[2].size == 10 &&
 214                     desc->channel[3].size == 2) {
 215                     return R300_TX_FORMAT_W2Z10Y10X10 | result;
 216                 }
 217         }
 218         return ~0; /* Unsupported/unknown. */
 219     }
 220
 221     /* And finally, uniform formats. */
 222     switch (desc->channel[0].type) {
 223         case UTIL_FORMAT_TYPE_UNSIGNED:
 224         case UTIL_FORMAT_TYPE_SIGNED:
 225             if (!desc->channel[0].normalized &&
 226                 desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
 227                 return ~0;
 228             }
 229
 230             switch (desc->channel[0].size) {
 231                 case 4:
 232                     switch (components) {
 233                         case 2:
 234                             return R300_TX_FORMAT_Y4X4 | result;
 235                         case 4:
 236                             return R300_TX_FORMAT_W4Z4Y4X4 | result;
 237                     }
 238                     return ~0;
 239
 240                 case 8:
 241                     switch (components) {
 242                         case 1:
 243                             return R300_TX_FORMAT_X8 | result;
 244                         case 2:
 245                             return R300_TX_FORMAT_Y8X8 | result;
 246                         case 4:
 247                             return R300_TX_FORMAT_W8Z8Y8X8 | result;
 248                     }
 249                     return ~0;
 250
 251                 case 16:
 252                     switch (components) {
 253                         case 1:
 254                             return R300_TX_FORMAT_X16 | result;
 255                         case 2:
 256                             return R300_TX_FORMAT_Y16X16 | result;
 257                         case 4:
 258                             return R300_TX_FORMAT_W16Z16Y16X16 | result;
 259                     }
 260             }
 261             return ~0;
 262
 263 /* XXX Enable float textures here. */
 264 #if 0
 265         case UTIL_FORMAT_TYPE_FLOAT:
 266             switch (desc->channel[0].size) {
 267                 case 16:
 268                     switch (components) {
 269                         case 1:
 270                             return R300_TX_FORMAT_16F | result;
 271                         case 2:
 272                             return R300_TX_FORMAT_16F_16F | result;
 273                         case 4:
 274                             return R300_TX_FORMAT_16F_16F_16F_16F | result;
 275                     }
 276                     return ~0;
 277
 278                 case 32:
 279                     switch (components) {
 280                         case 1:
 281                             return R300_TX_FORMAT_32F | result;
 282                         case 2:
 283                             return R300_TX_FORMAT_32F_32F | result;
 284                         case 4:
 285                             return R300_TX_FORMAT_32F_32F_32F_32F | result;
 286                     }
 287             }
 288 #endif
 289     }
 290
 291     return ~0; /* Unsupported/unknown. */
 292 }
 293
 294 /* Buffer formats. */
 295
 296 /* Colorbuffer formats. This is the unswizzled format of the RB3D block's
 297  * output. For the swizzling of the targets, check the shader's format. */
 298 static uint32_t r300_translate_colorformat(enum pipe_format format)
 299 {
 300     switch (format) {
 301         /* 8-bit buffers. */
 302         case PIPE_FORMAT_A8_UNORM:
 303         case PIPE_FORMAT_I8_UNORM:
 304         case PIPE_FORMAT_L8_UNORM:
 305         case PIPE_FORMAT_L8_SRGB:
 306         case PIPE_FORMAT_R8_UNORM:
 307         case PIPE_FORMAT_R8_SNORM:
 308             return R300_COLOR_FORMAT_I8;
 309
 310         /* 16-bit buffers. */
 311         case PIPE_FORMAT_R5G6B5_UNORM:
 312             return R300_COLOR_FORMAT_RGB565;
 313         case PIPE_FORMAT_A1R5G5B5_UNORM:
 314             return R300_COLOR_FORMAT_ARGB1555;
 315         case PIPE_FORMAT_A4R4G4B4_UNORM:
 316             return R300_COLOR_FORMAT_ARGB4444;
 317
 318         /* 32-bit buffers. */
 319         case PIPE_FORMAT_A8R8G8B8_UNORM:
 320         case PIPE_FORMAT_A8R8G8B8_SRGB:
 321         case PIPE_FORMAT_X8R8G8B8_UNORM:
 322         case PIPE_FORMAT_X8R8G8B8_SRGB:
 323         case PIPE_FORMAT_B8G8R8A8_UNORM:
 324         case PIPE_FORMAT_B8G8R8A8_SRGB:
 325         case PIPE_FORMAT_B8G8R8X8_UNORM:
 326         case PIPE_FORMAT_B8G8R8X8_SRGB:
 327         case PIPE_FORMAT_R8G8B8A8_UNORM:
 328         case PIPE_FORMAT_R8G8B8A8_SNORM:
 329         case PIPE_FORMAT_R8G8B8A8_SRGB:
 330         case PIPE_FORMAT_R8G8B8X8_UNORM:
 331         case PIPE_FORMAT_R8G8B8X8_SRGB:
 332         case PIPE_FORMAT_R8G8B8X8_SNORM:
 333         case PIPE_FORMAT_A8B8G8R8_SNORM:
 334         case PIPE_FORMAT_X8B8G8R8_SNORM:
 335         case PIPE_FORMAT_X8UB8UG8SR8S_NORM:
 336             return R300_COLOR_FORMAT_ARGB8888;
 337         case PIPE_FORMAT_A2B10G10R10_UNORM:
 338             return R500_COLOR_FORMAT_ARGB2101010;  /* R5xx-only? */
 339
 340         /* 64-bit buffers. */
 341         case PIPE_FORMAT_R16G16B16A16_UNORM:
 342         case PIPE_FORMAT_R16G16B16A16_SNORM:
 343         //case PIPE_FORMAT_R16G16B16A16_FLOAT: /* not in pipe_format */
 344             return R300_COLOR_FORMAT_ARGB16161616;
 345
 346 /* XXX Enable float textures here. */
 347 #if 0
 348         /* 128-bit buffers. */
 349         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 350             return R300_COLOR_FORMAT_ARGB32323232;
 351 #endif
 352
 353         /* YUV buffers. */
 354         case PIPE_FORMAT_YCBCR:
 355             return R300_COLOR_FORMAT_YVYU;
 356         case PIPE_FORMAT_YCBCR_REV:
 357             return R300_COLOR_FORMAT_VYUY;
 358         default:
 359             return ~0; /* Unsupported. */
 360     }
 361 }
 362
 363 /* Depthbuffer and stencilbuffer. Thankfully, we only support two flavors. */
 364 static uint32_t r300_translate_zsformat(enum pipe_format format)
 365 {
 366     switch (format) {
 367         /* 16-bit depth, no stencil */
 368         case PIPE_FORMAT_Z16_UNORM:
 369             return R300_DEPTHFORMAT_16BIT_INT_Z;
 370         /* 24-bit depth, ignored stencil */
 371         case PIPE_FORMAT_Z24X8_UNORM:
 372         /* 24-bit depth, 8-bit stencil */
 373         case PIPE_FORMAT_Z24S8_UNORM:
 374             return R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
 375         default:
 376             return ~0; /* Unsupported. */
 377     }
 378 }
 379
 380 /* Shader output formats. This is essentially the swizzle from the shader
 381  * to the RB3D block.
 382  *
 383  * Note that formats are stored from C3 to C0. */
 384 static uint32_t r300_translate_out_fmt(enum pipe_format format)
 385 {
 386     uint32_t modifier = 0;
 387     unsigned i;
 388     const struct util_format_description *desc;
 389     static const uint32_t sign_bit[4] = {
 390         R300_OUT_SIGN(0x1),
 391         R300_OUT_SIGN(0x2),
 392         R300_OUT_SIGN(0x4),
 393         R300_OUT_SIGN(0x8),
 394     };
 395
 396     desc = util_format_description(format);
 397
 398     /* Specifies how the shader output is written to the fog unit. */
 399     if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
 400         /* The gamma correction causes precision loss so we need
 401          * higher precision to maintain reasonable quality.
 402          * It has nothing to do with the colorbuffer format. */
 403         modifier |= R300_US_OUT_FMT_C4_10_GAMMA;
 404     } else if (desc->channel[0].type == UTIL_FORMAT_TYPE_FLOAT) {
 405         if (desc->channel[0].size == 32) {
 406             modifier |= R300_US_OUT_FMT_C4_32_FP;
 407         } else {
 408             modifier |= R300_US_OUT_FMT_C4_16_FP;
 409         }
 410     } else {
 411         if (desc->channel[0].size == 16) {
 412             modifier |= R300_US_OUT_FMT_C4_16;
 413         } else {
 414             /* C4_8 seems to be used for the formats whose pixel size
 415              * is <= 32 bits. */
 416             modifier |= R300_US_OUT_FMT_C4_8;
 417         }
 418     }
 419
 420     /* Add sign. */
 421     for (i = 0; i < 4; i++)
 422         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 423             modifier |= sign_bit[i];
 424         }
 425
 426     /* Add swizzles and return. */
 427     switch (format) {
 428         /* 8-bit outputs.
 429          * COLORFORMAT_I8 stores the C2 component. */
 430         case PIPE_FORMAT_A8_UNORM:
 431             return modifier | R300_C2_SEL_A;
 432         case PIPE_FORMAT_I8_UNORM:
 433         case PIPE_FORMAT_L8_UNORM:
 434         case PIPE_FORMAT_L8_SRGB:
 435         case PIPE_FORMAT_R8_UNORM:
 436         case PIPE_FORMAT_R8_SNORM:
 437             return modifier | R300_C2_SEL_R;
 438
 439         /* ARGB 32-bit outputs. */
 440         case PIPE_FORMAT_R5G6B5_UNORM:
 441         case PIPE_FORMAT_A1R5G5B5_UNORM:
 442         case PIPE_FORMAT_A4R4G4B4_UNORM:
 443         case PIPE_FORMAT_A8R8G8B8_UNORM:
 444         case PIPE_FORMAT_A8R8G8B8_SRGB:
 445         case PIPE_FORMAT_X8R8G8B8_UNORM:
 446         case PIPE_FORMAT_X8R8G8B8_SRGB:
 447             return modifier |
 448                 R300_C0_SEL_B | R300_C1_SEL_G |
 449                 R300_C2_SEL_R | R300_C3_SEL_A;
 450
 451         /* BGRA 32-bit outputs. */
 452         case PIPE_FORMAT_B8G8R8A8_UNORM:
 453         case PIPE_FORMAT_B8G8R8A8_SRGB:
 454         case PIPE_FORMAT_B8G8R8X8_UNORM:
 455         case PIPE_FORMAT_B8G8R8X8_SRGB:
 456             return modifier |
 457                 R300_C0_SEL_A | R300_C1_SEL_R |
 458                 R300_C2_SEL_G | R300_C3_SEL_B;
 459
 460         /* RGBA 32-bit outputs. */
 461         case PIPE_FORMAT_R8G8B8A8_UNORM:
 462         case PIPE_FORMAT_R8G8B8A8_SNORM:
 463         case PIPE_FORMAT_R8G8B8A8_SRGB:
 464         case PIPE_FORMAT_R8G8B8X8_UNORM:
 465         case PIPE_FORMAT_R8G8B8X8_SRGB:
 466         case PIPE_FORMAT_R8G8B8X8_SNORM:
 467             return modifier |
 468                 R300_C0_SEL_A | R300_C1_SEL_B |
 469                 R300_C2_SEL_G | R300_C3_SEL_R;
 470
 471         /* ABGR 32-bit outputs. */
 472         case PIPE_FORMAT_A8B8G8R8_SNORM:
 473         case PIPE_FORMAT_X8B8G8R8_SNORM:
 474         case PIPE_FORMAT_X8UB8UG8SR8S_NORM:
 475         case PIPE_FORMAT_A2B10G10R10_UNORM:
 476         /* RGBA high precision outputs (same swizzles as ABGR low precision) */
 477         case PIPE_FORMAT_R16G16B16A16_UNORM:
 478         case PIPE_FORMAT_R16G16B16A16_SNORM:
 479         //case PIPE_FORMAT_R16G16B16A16_FLOAT: /* not in pipe_format */
 480         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 481             return modifier |
 482                 R300_C0_SEL_R | R300_C1_SEL_G |
 483                 R300_C2_SEL_B | R300_C3_SEL_A;
 484
 485         default:
 486             return ~0; /* Unsupported. */
 487     }
 488 }
 489
 490 boolean r300_is_colorbuffer_format_supported(enum pipe_format format)
 491 {
 492     return r300_translate_colorformat(format) != ~0 &&
 493            r300_translate_out_fmt(format) != ~0;
 494 }
 495
 496 boolean r300_is_zs_format_supported(enum pipe_format format)
 497 {
 498     return r300_translate_zsformat(format) != ~0;
 499 }
 500
 501 boolean r300_is_sampler_format_supported(enum pipe_format format)
 502 {
 503     return r300_translate_texformat(format) != ~0;
 504 }
 505
 506 static void r300_setup_texture_state(struct r300_screen* screen, struct r300_texture* tex)
 507 {
 508     struct r300_texture_state* state = &tex->state;
 509     struct pipe_texture *pt = &tex->tex;
 510     unsigned i;
 511     boolean is_r500 = screen->caps->is_r500;
 512
 513     /* Set sampler state. */
 514     state->format0 = R300_TX_WIDTH((pt->width0 - 1) & 0x7ff) |
 515                      R300_TX_HEIGHT((pt->height0 - 1) & 0x7ff);
 516
 517     if (tex->is_npot) {
 518         /* rectangles love this */
 519         state->format0 |= R300_TX_PITCH_EN;
 520         state->format2 = (tex->pitch[0] - 1) & 0x1fff;
 521     } else {
 522         /* power of two textures (3D, mipmaps, and no pitch) */
 523         state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth0) & 0xf);
 524     }
 525
 526     state->format1 = r300_translate_texformat(pt->format);
 527     if (pt->target == PIPE_TEXTURE_CUBE) {
 528         state->format1 |= R300_TX_FORMAT_CUBIC_MAP;
 529     }
 530     if (pt->target == PIPE_TEXTURE_3D) {
 531         state->format1 |= R300_TX_FORMAT_3D;
 532     }
 533
 534     /* large textures on r500 */
 535     if (is_r500)
 536     {
 537         if (pt->width0 > 2048) {
 538             state->format2 |= R500_TXWIDTH_BIT11;
 539         }
 540         if (pt->height0 > 2048) {
 541             state->format2 |= R500_TXHEIGHT_BIT11;
 542         }
 543     }
 544
 545     SCREEN_DBG(screen, DBG_TEX, "r300: Set texture state (%dx%d, %d levels)\n",
 546                pt->width0, pt->height0, pt->last_level);
 547
 548     /* Set framebuffer state. */
 549     if (util_format_is_depth_or_stencil(tex->tex.format)) {
 550         for (i = 0; i <= tex->tex.last_level; i++) {
 551             tex->fb_state.depthpitch[i] =
 552                 tex->pitch[i] |
 553                 R300_DEPTHMACROTILE(tex->mip_macrotile[i]) |
 554                 R300_DEPTHMICROTILE(tex->microtile);
 555         }
 556         tex->fb_state.zb_format = r300_translate_zsformat(tex->tex.format);
 557     } else {
 558         for (i = 0; i <= tex->tex.last_level; i++) {
 559             tex->fb_state.colorpitch[i] =
 560                 tex->pitch[i] |
 561                 r300_translate_colorformat(tex->tex.format) |
 562                 R300_COLOR_TILE(tex->mip_macrotile[i]) |
 563                 R300_COLOR_MICROTILE(tex->microtile);
 564         }
 565         tex->fb_state.us_out_fmt = r300_translate_out_fmt(tex->tex.format);
 566     }
 567 }
 568
 569 void r300_texture_reinterpret_format(struct pipe_screen *screen,
 570                                      struct pipe_texture *tex,
 571                                      enum pipe_format new_format)
 572 {
 573     struct r300_screen *r300screen = r300_screen(screen);
 574
 575     SCREEN_DBG(r300screen, DBG_TEX, "r300: Reinterpreting format: %s -> %s\n",
 576                util_format_name(tex->format), util_format_name(new_format));
 577
 578     tex->format = new_format;
 579
 580     r300_setup_texture_state(r300_screen(screen), (struct r300_texture*)tex);
 581 }
 582
 583 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
 584                                  unsigned zslice, unsigned face)
 585 {
 586     unsigned offset = tex->offset[level];
 587
 588     switch (tex->tex.target) {
 589         case PIPE_TEXTURE_3D:
 590             assert(face == 0);
 591             return offset + zslice * tex->layer_size[level];
 592
 593         case PIPE_TEXTURE_CUBE:
 594             assert(zslice == 0);
 595             return offset + face * tex->layer_size[level];
 596
 597         default:
 598             assert(zslice == 0 && face == 0);
 599             return offset;
 600     }
 601 }
 602
 603 /**
 604  * Return the width (dim==TILE_WIDTH) or height (dim==TILE_HEIGHT) of one tile
 605  * of the given texture.
 606  */
 607 static unsigned r300_texture_get_tile_size(struct r300_texture* tex,
 608                                            int dim, boolean macrotile)
 609 {
 610     unsigned pixsize, tile_size;
 611
 612     pixsize = util_format_get_blocksize(tex->tex.format);
 613     tile_size = microblock_table[util_logbase2(pixsize)][tex->microtile][dim];
 614
 615     if (macrotile) {
 616         tile_size *= 8;
 617     }
 618
 619     assert(tile_size);
 620     return tile_size;
 621 }
 622
 623 /* Return true if macrotiling should be enabled on the miplevel. */
 624 static boolean r300_texture_macro_switch(struct r300_texture *tex,
 625                                          unsigned level,
 626                                          boolean rv350_mode)
 627 {
 628     unsigned tile_width, width;
 629
 630     tile_width = r300_texture_get_tile_size(tex, TILE_WIDTH, TRUE);
 631     width = u_minify(tex->tex.width0, level);
 632
 633     /* See TX_FILTER1_n.MACRO_SWITCH. */
 634     if (rv350_mode) {
 635         return width >= tile_width;
 636     } else {
 637         return width > tile_width;
 638     }
 639 }
 640
 641 /**
 642  * Return the stride, in bytes, of the texture images of the given texture
 643  * at the given level.
 644  */
 645 unsigned r300_texture_get_stride(struct r300_screen* screen,
 646                                  struct r300_texture* tex, unsigned level)
 647 {
 648     unsigned tile_width, width;
 649
 650     if (tex->stride_override)
 651         return tex->stride_override;
 652
 653     /* Check the level. */
 654     if (level > tex->tex.last_level) {
 655         SCREEN_DBG(screen, DBG_TEX, "%s: level (%u) > last_level (%u)\n",
 656                    __FUNCTION__, level, tex->tex.last_level);
 657         return 0;
 658     }
 659
 660     width = u_minify(tex->tex.width0, level);
 661
 662     if (!util_format_is_compressed(tex->tex.format)) {
 663         tile_width = r300_texture_get_tile_size(tex, TILE_WIDTH,
 664                                                 tex->mip_macrotile[level]);
 665         width = align(width, tile_width);
 666
 667         return util_format_get_stride(tex->tex.format, width);
 668     } else {
 669         return align(util_format_get_stride(tex->tex.format, width), 32);
 670     }
 671 }
 672
 673 static unsigned r300_texture_get_nblocksy(struct r300_texture* tex,
 674                                           unsigned level)
 675 {
 676     unsigned height, tile_height;
 677
 678     height = u_minify(tex->tex.height0, level);
 679
 680     if (!util_format_is_compressed(tex->tex.format)) {
 681         tile_height = r300_texture_get_tile_size(tex, TILE_HEIGHT,
 682                                                  tex->mip_macrotile[level]);
 683         height = align(height, tile_height);
 684     }
 685
 686     return util_format_get_nblocksy(tex->tex.format, height);
 687 }
 688
 689 static void r300_setup_miptree(struct r300_screen* screen,
 690                                struct r300_texture* tex)
 691 {
 692     struct pipe_texture* base = &tex->tex;
 693     unsigned stride, size, layer_size, nblocksy, i;
 694     boolean rv350_mode = screen->caps->family >= CHIP_FAMILY_RV350;
 695
 696     SCREEN_DBG(screen, DBG_TEX, "r300: Making miptree for texture, format %s\n",
 697                util_format_name(base->format));
 698
 699     for (i = 0; i <= base->last_level; i++) {
 700         /* Let's see if this miplevel can be macrotiled. */
 701         tex->mip_macrotile[i] = (tex->macrotile == R300_BUFFER_TILED &&
 702                                  r300_texture_macro_switch(tex, i, rv350_mode)) ?
 703                                  R300_BUFFER_TILED : R300_BUFFER_LINEAR;
 704
 705         stride = r300_texture_get_stride(screen, tex, i);
 706         nblocksy = r300_texture_get_nblocksy(tex, i);
 707         layer_size = stride * nblocksy;
 708
 709         if (base->target == PIPE_TEXTURE_CUBE)
 710             size = layer_size * 6;
 711         else
 712             size = layer_size * u_minify(base->depth0, i);
 713
 714         tex->offset[i] = tex->size;
 715         tex->size = tex->offset[i] + size;
 716         tex->layer_size[i] = layer_size;
 717         tex->pitch[i] = stride / util_format_get_blocksize(base->format);
 718
 719         SCREEN_DBG(screen, DBG_TEX, "r300: Texture miptree: Level %d "
 720                 "(%dx%dx%d px, pitch %d bytes) %d bytes total, macrotiled %s\n",
 721                 i, u_minify(base->width0, i), u_minify(base->height0, i),
 722                 u_minify(base->depth0, i), stride, tex->size,
 723                 tex->mip_macrotile[i] ? "TRUE" : "FALSE");
 724     }
 725 }
 726
 727 static void r300_setup_flags(struct r300_texture* tex)
 728 {
 729     tex->is_npot = !util_is_power_of_two(tex->tex.width0) ||
 730                    !util_is_power_of_two(tex->tex.height0);
 731 }
 732
 733 /* Create a new texture. */
 734 static struct pipe_texture*
 735     r300_texture_create(struct pipe_screen* screen,
 736                         const struct pipe_texture* template)
 737 {
 738     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
 739     struct r300_screen* rscreen = r300_screen(screen);
 740     struct radeon_winsys* winsys = (struct radeon_winsys*)screen->winsys;
 741
 742     if (!tex) {
 743         return NULL;
 744     }
 745
 746     tex->tex = *template;
 747     pipe_reference_init(&tex->tex.reference, 1);
 748     tex->tex.screen = screen;
 749
 750     r300_setup_flags(tex);
 751     r300_setup_miptree(rscreen, tex);
 752     r300_setup_texture_state(rscreen, tex);
 753
 754     tex->buffer = screen->buffer_create(screen, 2048,
 755                                         PIPE_BUFFER_USAGE_PIXEL,
 756                                         tex->size);
 757     winsys->buffer_set_tiling(winsys, tex->buffer,
 758                               tex->pitch[0],
 759                               tex->microtile != R300_BUFFER_LINEAR,
 760                               tex->macrotile != R300_BUFFER_LINEAR);
 761
 762     if (!tex->buffer) {
 763         FREE(tex);
 764         return NULL;
 765     }
 766
 767     return (struct pipe_texture*)tex;
 768 }
 769
 770 static void r300_texture_destroy(struct pipe_texture* texture)
 771 {
 772     struct r300_texture* tex = (struct r300_texture*)texture;
 773
 774     pipe_buffer_reference(&tex->buffer, NULL);
 775
 776     FREE(tex);
 777 }
 778
 779 static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 780                                                  struct pipe_texture* texture,
 781                                                  unsigned face,
 782                                                  unsigned level,
 783                                                  unsigned zslice,
 784                                                  unsigned flags)
 785 {
 786     struct r300_texture* tex = (struct r300_texture*)texture;
 787     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
 788     unsigned offset;
 789
 790     offset = r300_texture_get_offset(tex, level, zslice, face);
 791
 792     if (surface) {
 793         pipe_reference_init(&surface->reference, 1);
 794         pipe_texture_reference(&surface->texture, texture);
 795         surface->format = texture->format;
 796         surface->width = u_minify(texture->width0, level);
 797         surface->height = u_minify(texture->height0, level);
 798         surface->offset = offset;
 799         surface->usage = flags;
 800         surface->zslice = zslice;
 801         surface->texture = texture;
 802         surface->face = face;
 803         surface->level = level;
 804     }
 805
 806     return surface;
 807 }
 808
 809 static void r300_tex_surface_destroy(struct pipe_surface* s)
 810 {
 811     pipe_texture_reference(&s->texture, NULL);
 812     FREE(s);
 813 }
 814
 815 static struct pipe_texture*
 816     r300_texture_blanket(struct pipe_screen* screen,
 817                          const struct pipe_texture* base,
 818                          const unsigned* stride,
 819                          struct pipe_buffer* buffer)
 820 {
 821     struct r300_texture* tex;
 822     struct r300_screen* rscreen = r300_screen(screen);
 823
 824     /* Support only 2D textures without mipmaps */
 825     if (base->target != PIPE_TEXTURE_2D ||
 826         base->depth0 != 1 ||
 827         base->last_level != 0) {
 828         return NULL;
 829     }
 830
 831     tex = CALLOC_STRUCT(r300_texture);
 832     if (!tex) {
 833         return NULL;
 834     }
 835
 836     tex->tex = *base;
 837     pipe_reference_init(&tex->tex.reference, 1);
 838     tex->tex.screen = screen;
 839
 840     tex->stride_override = *stride;
 841     tex->pitch[0] = *stride / util_format_get_blocksize(base->format);
 842
 843     r300_setup_flags(tex);
 844     r300_setup_texture_state(rscreen, tex);
 845
 846     pipe_buffer_reference(&tex->buffer, buffer);
 847
 848     return (struct pipe_texture*)tex;
 849 }
 850
 851 static struct pipe_video_surface *
 852 r300_video_surface_create(struct pipe_screen *screen,
 853                           enum pipe_video_chroma_format chroma_format,
 854                           unsigned width, unsigned height)
 855 {
 856     struct r300_video_surface *r300_vsfc;
 857     struct pipe_texture template;
 858
 859     assert(screen);
 860     assert(width && height);
 861
 862     r300_vsfc = CALLOC_STRUCT(r300_video_surface);
 863     if (!r300_vsfc)
 864        return NULL;
 865
 866     pipe_reference_init(&r300_vsfc->base.reference, 1);
 867     r300_vsfc->base.screen = screen;
 868     r300_vsfc->base.chroma_format = chroma_format;
 869     r300_vsfc->base.width = width;
 870     r300_vsfc->base.height = height;
 871
 872     memset(&template, 0, sizeof(struct pipe_texture));
 873     template.target = PIPE_TEXTURE_2D;
 874     template.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 875     template.last_level = 0;
 876     template.width0 = util_next_power_of_two(width);
 877     template.height0 = util_next_power_of_two(height);
 878     template.depth0 = 1;
 879     template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
 880                          PIPE_TEXTURE_USAGE_RENDER_TARGET;
 881
 882     r300_vsfc->tex = screen->texture_create(screen, &template);
 883     if (!r300_vsfc->tex)
 884     {
 885         FREE(r300_vsfc);
 886         return NULL;
 887     }
 888
 889     return &r300_vsfc->base;
 890 }
 891
 892 static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 893 {
 894     struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
 895     pipe_texture_reference(&r300_vsfc->tex, NULL);
 896     FREE(r300_vsfc);
 897 }
 898
 899 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 900 {
 901     screen->texture_create = r300_texture_create;
 902     screen->texture_destroy = r300_texture_destroy;
 903     screen->get_tex_surface = r300_get_tex_surface;
 904     screen->tex_surface_destroy = r300_tex_surface_destroy;
 905     screen->texture_blanket = r300_texture_blanket;
 906
 907     screen->video_surface_create = r300_video_surface_create;
 908     screen->video_surface_destroy= r300_video_surface_destroy;
 909 }
 910
 911 boolean r300_get_texture_buffer(struct pipe_screen* screen,
 912                                 struct pipe_texture* texture,
 913                                 struct pipe_buffer** buffer,
 914                                 unsigned* stride)
 915 {
 916     struct r300_texture* tex = (struct r300_texture*)texture;
 917     if (!tex) {
 918         return FALSE;
 919     }
 920
 921     pipe_buffer_reference(buffer, tex->buffer);
 922
 923     if (stride) {
 924         *stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
 925     }
 926
 927     return TRUE;
 928 }