src/mesa/drivers/dri/intel/intel_mipmap_tree.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "intel_context.h"
  29 #include "intel_mipmap_tree.h"
  30 #include "intel_regions.h"
  31 #include "intel_chipset.h"
  32 #include "main/enums.h"
  33
  34 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  35
  36 static GLenum
  37 target_to_target(GLenum target)
  38 {
  39    switch (target) {
  40    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  41    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  42    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  43    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  44    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  45    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  46       return GL_TEXTURE_CUBE_MAP_ARB;
  47    default:
  48       return target;
  49    }
  50 }
  51
  52 static struct intel_mipmap_tree *
  53 intel_miptree_create_internal(struct intel_context *intel,
  54                               GLenum target,
  55                               GLenum internal_format,
  56                               GLuint first_level,
  57                               GLuint last_level,
  58                               GLuint width0,
  59                               GLuint height0,
  60                               GLuint depth0, GLuint cpp, GLuint compress_byte,
  61                               uint32_t tiling)
  62 {
  63    GLboolean ok;
  64    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  65
  66    DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
  67        _mesa_lookup_enum_by_nr(target),
  68        _mesa_lookup_enum_by_nr(internal_format),
  69        first_level, last_level, mt);
  70
  71    mt->target = target_to_target(target);
  72    mt->internal_format = internal_format;
  73    mt->first_level = first_level;
  74    mt->last_level = last_level;
  75    mt->width0 = width0;
  76    mt->height0 = height0;
  77    mt->depth0 = depth0;
  78    mt->cpp = compress_byte ? compress_byte : cpp;
  79    mt->compressed = compress_byte ? 1 : 0;
  80    mt->refcount = 1;
  81    mt->pitch = 0;
  82
  83 #ifdef I915
  84    if (IS_945(intel->intelScreen->deviceID))
  85       ok = i945_miptree_layout(intel, mt, tiling);
  86    else
  87       ok = i915_miptree_layout(intel, mt, tiling);
  88 #else
  89    ok = brw_miptree_layout(intel, mt, tiling);
  90 #endif
  91
  92    if (!ok) {
  93       free(mt);
  94       DBG("%s not okay - returning NULL\n", __FUNCTION__);
  95       return NULL;
  96    }
  97
  98    return mt;
  99 }
 100
 101 struct intel_mipmap_tree *
 102 intel_miptree_create(struct intel_context *intel,
 103                      GLenum target,
 104                      GLenum base_format,
 105                      GLenum internal_format,
 106                      GLuint first_level,
 107                      GLuint last_level,
 108                      GLuint width0,
 109                      GLuint height0,
 110                      GLuint depth0, GLuint cpp, GLuint compress_byte,
 111                      GLboolean expect_accelerated_upload)
 112 {
 113    struct intel_mipmap_tree *mt;
 114    uint32_t tiling;
 115
 116    if (intel->use_texture_tiling && compress_byte == 0 &&
 117        intel->intelScreen->kernel_exec_fencing) {
 118       if (IS_965(intel->intelScreen->deviceID) &&
 119           (base_format == GL_DEPTH_COMPONENT ||
 120            base_format == GL_DEPTH_STENCIL_EXT))
 121          tiling = I915_TILING_Y;
 122       else
 123          tiling = I915_TILING_X;
 124    } else
 125       tiling = I915_TILING_NONE;
 126
 127    mt = intel_miptree_create_internal(intel, target, internal_format,
 128                                       first_level, last_level, width0,
 129                                       height0, depth0, cpp, compress_byte,
 130                                       tiling);
 131    /*
 132     * pitch == 0 || height == 0  indicates the null texture
 133     */
 134    if (!mt || !mt->pitch || !mt->total_height)
 135       return NULL;
 136
 137    mt->region = intel_region_alloc(intel,
 138                                    tiling,
 139                                    mt->cpp,
 140                                    mt->pitch,
 141                                    mt->total_height,
 142                                    mt->pitch,
 143                                    expect_accelerated_upload);
 144
 145    if (!mt->region) {
 146        free(mt);
 147        return NULL;
 148    }
 149
 150    return mt;
 151 }
 152
 153 struct intel_mipmap_tree *
 154 intel_miptree_create_for_region(struct intel_context *intel,
 155                                 GLenum target,
 156                                 GLenum internal_format,
 157                                 GLuint first_level,
 158                                 GLuint last_level,
 159                                 struct intel_region *region,
 160                                 GLuint depth0,
 161                                 GLuint compress_byte)
 162 {
 163    struct intel_mipmap_tree *mt;
 164
 165    mt = intel_miptree_create_internal(intel, target, internal_format,
 166                                       first_level, last_level,
 167                                       region->width, region->height, 1,
 168                                       region->cpp, compress_byte,
 169                                       I915_TILING_NONE);
 170    if (!mt)
 171       return mt;
 172 #if 0
 173    if (mt->pitch != region->pitch) {
 174       fprintf(stderr,
 175               "region pitch (%d) doesn't match mipmap tree pitch (%d)\n",
 176               region->pitch, mt->pitch);
 177       free(mt);
 178       return NULL;
 179    }
 180 #else
 181    /* The mipmap tree pitch is aligned to 64 bytes to make sure render
 182     * to texture works, but we don't need that for texturing from a
 183     * pixmap.  Just override it here. */
 184    mt->pitch = region->pitch;
 185 #endif
 186
 187    intel_region_reference(&mt->region, region);
 188
 189    return mt;
 190  }
 191
 192 /**
 193  * intel_miptree_pitch_align:
 194  *
 195  * @intel: intel context pointer
 196  *
 197  * @mt: the miptree to compute pitch alignment for
 198  *
 199  * @pitch: the natural pitch value
 200  *
 201  * Given @pitch, compute a larger value which accounts for
 202  * any necessary alignment required by the device
 203  */
 204
 205 int intel_miptree_pitch_align (struct intel_context *intel,
 206                                struct intel_mipmap_tree *mt,
 207                                uint32_t tiling,
 208                                int pitch)
 209 {
 210 #ifdef I915
 211    GLcontext *ctx = &intel->ctx;
 212 #endif
 213
 214    if (!mt->compressed) {
 215       int pitch_align;
 216
 217       if (intel->ttm) {
 218          /* XXX: Align pitch to multiple of 64 bytes for now to allow
 219           * render-to-texture to work in all cases. This should probably be
 220           * replaced at some point by some scheme to only do this when really
 221           * necessary.
 222           */
 223          pitch_align = 64;
 224       } else {
 225          pitch_align = 4;
 226       }
 227
 228       if (tiling == I915_TILING_X)
 229          pitch_align = 512;
 230       else if (tiling == I915_TILING_Y)
 231          pitch_align = 128;
 232
 233       pitch = ALIGN(pitch * mt->cpp, pitch_align);
 234
 235 #ifdef I915
 236       /* XXX: At least the i915 seems very upset when the pitch is a multiple
 237        * of 1024 and sometimes 512 bytes - performance can drop by several
 238        * times. Go to the next multiple of the required alignment for now.
 239        */
 240       if (!(pitch & 511) &&
 241          (pitch + pitch_align) < (1 << ctx->Const.MaxTextureLevels))
 242          pitch += pitch_align;
 243 #endif
 244
 245       pitch /= mt->cpp;
 246    }
 247    return pitch;
 248 }
 249
 250 void
 251 intel_miptree_reference(struct intel_mipmap_tree **dst,
 252                         struct intel_mipmap_tree *src)
 253 {
 254    src->refcount++;
 255    *dst = src;
 256    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 257 }
 258
 259 void
 260 intel_miptree_release(struct intel_context *intel,
 261                       struct intel_mipmap_tree **mt)
 262 {
 263    if (!*mt)
 264       return;
 265
 266    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 267    if (--(*mt)->refcount <= 0) {
 268       GLuint i;
 269
 270       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 271
 272       intel_region_release(&((*mt)->region));
 273
 274       for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
 275          if ((*mt)->level[i].image_offset)
 276             free((*mt)->level[i].image_offset);
 277
 278       free(*mt);
 279    }
 280    *mt = NULL;
 281 }
 282
 283
 284
 285
 286 /* Can the image be pulled into a unified mipmap tree.  This mirrors
 287  * the completeness test in a lot of ways.
 288  *
 289  * Not sure whether I want to pass gl_texture_image here.
 290  */
 291 GLboolean
 292 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 293                           struct gl_texture_image *image,
 294                           GLuint face, GLuint level)
 295 {
 296    /* Images with borders are never pulled into mipmap trees.
 297     */
 298    if (image->Border ||
 299        ((image->_BaseFormat == GL_DEPTH_COMPONENT) &&
 300         ((image->TexObject->WrapS == GL_CLAMP_TO_BORDER) ||
 301          (image->TexObject->WrapT == GL_CLAMP_TO_BORDER))))
 302       return GL_FALSE;
 303
 304    if (image->InternalFormat != mt->internal_format ||
 305        image->IsCompressed != mt->compressed)
 306       return GL_FALSE;
 307
 308    if (!image->IsCompressed &&
 309        !mt->compressed &&
 310        image->TexFormat->TexelBytes != mt->cpp)
 311       return GL_FALSE;
 312
 313    /* Test image dimensions against the base level image adjusted for
 314     * minification.  This will also catch images not present in the
 315     * tree, changed targets, etc.
 316     */
 317    if (image->Width != mt->level[level].width ||
 318        image->Height != mt->level[level].height ||
 319        image->Depth != mt->level[level].depth)
 320       return GL_FALSE;
 321
 322    return GL_TRUE;
 323 }
 324
 325
 326 void
 327 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 328                              GLuint level,
 329                              GLuint nr_images,
 330                              GLuint x, GLuint y,
 331                              GLuint w, GLuint h, GLuint d)
 332 {
 333    mt->level[level].width = w;
 334    mt->level[level].height = h;
 335    mt->level[level].depth = d;
 336    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 337    mt->level[level].nr_images = nr_images;
 338
 339    DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
 340        level, w, h, d, x, y, mt->level[level].level_offset);
 341
 342    /* Not sure when this would happen, but anyway:
 343     */
 344    if (mt->level[level].image_offset) {
 345       free(mt->level[level].image_offset);
 346       mt->level[level].image_offset = NULL;
 347    }
 348
 349    assert(nr_images);
 350
 351    mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
 352    mt->level[level].image_offset[0] = 0;
 353 }
 354
 355
 356 void
 357 intel_miptree_set_image_offset_ex(struct intel_mipmap_tree *mt,
 358                                   GLuint level, GLuint img,
 359                                   GLuint x, GLuint y,
 360                                   GLuint offset)
 361 {
 362    if (img == 0 && level == 0)
 363       assert(x == 0 && y == 0);
 364
 365    assert(img < mt->level[level].nr_images);
 366
 367    mt->level[level].image_offset[img] = (x + y * mt->pitch) * mt->cpp + offset;
 368
 369    DBG("%s level %d img %d pos %d,%d image_offset %x\n",
 370        __FUNCTION__, level, img, x, y, mt->level[level].image_offset[img]);
 371 }
 372
 373 void
 374 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 375                                GLuint level, GLuint img,
 376                                GLuint x, GLuint y)
 377 {
 378     intel_miptree_set_image_offset_ex(mt, level, img, x, y, 0);
 379 }
 380
 381
 382 /* Although we use the image_offset[] array to store relative offsets
 383  * to cube faces, Mesa doesn't know anything about this and expects
 384  * each cube face to be treated as a separate image.
 385  *
 386  * These functions present that view to mesa:
 387  */
 388 const GLuint *
 389 intel_miptree_depth_offsets(struct intel_mipmap_tree *mt, GLuint level)
 390 {
 391    static const GLuint zero = 0;
 392
 393    if (mt->target != GL_TEXTURE_3D || mt->level[level].nr_images == 1)
 394       return &zero;
 395    else
 396       return mt->level[level].image_offset;
 397 }
 398
 399
 400 GLuint
 401 intel_miptree_image_offset(struct intel_mipmap_tree *mt,
 402                            GLuint face, GLuint level)
 403 {
 404    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
 405       return (mt->level[level].level_offset +
 406               mt->level[level].image_offset[face]);
 407    else
 408       return mt->level[level].level_offset;
 409 }
 410
 411
 412
 413 /**
 414  * Map a teximage in a mipmap tree.
 415  * \param row_stride  returns row stride in bytes
 416  * \param image_stride  returns image stride in bytes (for 3D textures).
 417  * \param image_offsets pointer to array of pixel offsets from the returned
 418  *        pointer to each depth image
 419  * \return address of mapping
 420  */
 421 GLubyte *
 422 intel_miptree_image_map(struct intel_context * intel,
 423                         struct intel_mipmap_tree * mt,
 424                         GLuint face,
 425                         GLuint level,
 426                         GLuint * row_stride, GLuint * image_offsets)
 427 {
 428    DBG("%s \n", __FUNCTION__);
 429
 430    if (row_stride)
 431       *row_stride = mt->pitch * mt->cpp;
 432
 433    if (mt->target == GL_TEXTURE_3D) {
 434       int i;
 435
 436       for (i = 0; i < mt->level[level].depth; i++)
 437          image_offsets[i] = mt->level[level].image_offset[i] / mt->cpp;
 438    } else {
 439       assert(mt->level[level].depth == 1);
 440       assert(mt->target == GL_TEXTURE_CUBE_MAP ||
 441              mt->level[level].image_offset[0] == 0);
 442       image_offsets[0] = 0;
 443    }
 444
 445    return (intel_region_map(intel, mt->region) +
 446            intel_miptree_image_offset(mt, face, level));
 447 }
 448
 449 void
 450 intel_miptree_image_unmap(struct intel_context *intel,
 451                           struct intel_mipmap_tree *mt)
 452 {
 453    DBG("%s\n", __FUNCTION__);
 454    intel_region_unmap(intel, mt->region);
 455 }
 456
 457
 458
 459 /* Upload data for a particular image.
 460  */
 461 void
 462 intel_miptree_image_data(struct intel_context *intel,
 463                          struct intel_mipmap_tree *dst,
 464                          GLuint face,
 465                          GLuint level,
 466                          void *src,
 467                          GLuint src_row_pitch,
 468                          GLuint src_image_pitch)
 469 {
 470    GLuint depth = dst->level[level].depth;
 471    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 472    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 473    GLuint i;
 474    GLuint height = 0;
 475
 476    DBG("%s: %d/%d\n", __FUNCTION__, face, level);
 477    for (i = 0; i < depth; i++) {
 478       height = dst->level[level].height;
 479       if(dst->compressed)
 480          height = (height + 3) / 4;
 481       intel_region_data(intel,
 482                         dst->region,
 483                         dst_offset + dst_depth_offset[i], /* dst_offset */
 484                         0, 0,                             /* dstx, dsty */
 485                         src,
 486                         src_row_pitch,
 487                         0, 0,                             /* source x, y */
 488                         dst->level[level].width, height); /* width, height */
 489
 490       src = (char *)src + src_image_pitch * dst->cpp;
 491    }
 492 }
 493
 494 extern void intel_get_texture_alignment_unit(GLenum, GLuint *, GLuint *);
 495 /* Copy mipmap image between trees
 496  */
 497 void
 498 intel_miptree_image_copy(struct intel_context *intel,
 499                          struct intel_mipmap_tree *dst,
 500                          GLuint face, GLuint level,
 501                          struct intel_mipmap_tree *src)
 502 {
 503    GLuint width = src->level[level].width;
 504    GLuint height = src->level[level].height;
 505    GLuint depth = src->level[level].depth;
 506    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 507    GLuint src_offset = intel_miptree_image_offset(src, face, level);
 508    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 509    const GLuint *src_depth_offset = intel_miptree_depth_offsets(src, level);
 510    GLuint i;
 511    GLboolean success;
 512
 513    if (dst->compressed) {
 514        GLuint align_w, align_h;
 515
 516        intel_get_texture_alignment_unit(dst->internal_format, &align_w, &align_h);
 517        height = (height + 3) / 4;
 518        width = ALIGN(width, align_w);
 519    }
 520
 521    for (i = 0; i < depth; i++) {
 522       success = intel_region_copy(intel,
 523                                   dst->region, dst_offset + dst_depth_offset[i],
 524                                   0, 0,
 525                                   src->region, src_offset + src_depth_offset[i],
 526                                   0, 0, width, height, GL_COPY);
 527       if (!success) {
 528          GLubyte *src_ptr, *dst_ptr;
 529
 530          src_ptr = intel_region_map(intel, src->region);
 531          dst_ptr = intel_region_map(intel, dst->region);
 532
 533          _mesa_copy_rect(dst_ptr + dst_offset + dst_depth_offset[i],
 534                          dst->cpp,
 535                          dst->pitch,
 536                          0, 0, width, height,
 537                          src_ptr + src_offset + src_depth_offset[i],
 538                          src->pitch,
 539                          0, 0);
 540          intel_region_unmap(intel, src->region);
 541          intel_region_unmap(intel, dst->region);
 542       }
 543    }
 544 }