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_tex_layout.h"
  32 #include "intel_chipset.h"
  33 #ifndef I915
  34 #include "brw_state.h"
  35 #endif
  36 #include "main/enums.h"
  37
  38 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  39
  40
  41 static GLenum
  42 target_to_target(GLenum target)
  43 {
  44    switch (target) {
  45    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  46    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  47    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  48    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  49    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  50    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  51       return GL_TEXTURE_CUBE_MAP_ARB;
  52    default:
  53       return target;
  54    }
  55 }
  56
  57
  58 static struct intel_mipmap_tree *
  59 intel_miptree_create_internal(struct intel_context *intel,
  60                               GLenum target,
  61                               GLenum internal_format,
  62                               GLuint first_level,
  63                               GLuint last_level,
  64                               GLuint width0,
  65                               GLuint height0,
  66                               GLuint depth0, GLuint cpp, GLuint compress_byte,
  67                               uint32_t tiling)
  68 {
  69    GLboolean ok;
  70    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  71
  72    DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
  73        _mesa_lookup_enum_by_nr(target),
  74        _mesa_lookup_enum_by_nr(internal_format),
  75        first_level, last_level, mt);
  76
  77    mt->target = target_to_target(target);
  78    mt->internal_format = internal_format;
  79    mt->first_level = first_level;
  80    mt->last_level = last_level;
  81    mt->width0 = width0;
  82    mt->height0 = height0;
  83    mt->depth0 = depth0;
  84    mt->cpp = compress_byte ? compress_byte : cpp;
  85    mt->compressed = compress_byte ? 1 : 0;
  86    mt->refcount = 1;
  87    mt->pitch = 0;
  88
  89 #ifdef I915
  90    if (intel->is_945)
  91       ok = i945_miptree_layout(intel, mt, tiling);
  92    else
  93       ok = i915_miptree_layout(intel, mt, tiling);
  94 #else
  95    ok = brw_miptree_layout(intel, mt, tiling);
  96 #endif
  97
  98    if (!ok) {
  99       free(mt);
 100       DBG("%s not okay - returning NULL\n", __FUNCTION__);
 101       return NULL;
 102    }
 103
 104    return mt;
 105 }
 106
 107
 108 struct intel_mipmap_tree *
 109 intel_miptree_create(struct intel_context *intel,
 110                      GLenum target,
 111                      GLenum base_format,
 112                      GLenum internal_format,
 113                      GLuint first_level,
 114                      GLuint last_level,
 115                      GLuint width0,
 116                      GLuint height0,
 117                      GLuint depth0, GLuint cpp, GLuint compress_byte,
 118                      GLboolean expect_accelerated_upload)
 119 {
 120    struct intel_mipmap_tree *mt;
 121    uint32_t tiling;
 122
 123    if (intel->use_texture_tiling && compress_byte == 0 &&
 124        intel->intelScreen->kernel_exec_fencing) {
 125       if (intel->gen >= 4 &&
 126           (base_format == GL_DEPTH_COMPONENT ||
 127            base_format == GL_DEPTH_STENCIL_EXT))
 128          tiling = I915_TILING_Y;
 129       else
 130          tiling = I915_TILING_X;
 131    } else
 132       tiling = I915_TILING_NONE;
 133
 134    mt = intel_miptree_create_internal(intel, target, internal_format,
 135                                       first_level, last_level, width0,
 136                                       height0, depth0, cpp, compress_byte,
 137                                       tiling);
 138    /*
 139     * pitch == 0 || height == 0  indicates the null texture
 140     */
 141    if (!mt || !mt->pitch || !mt->total_height) {
 142       free(mt);
 143       return NULL;
 144    }
 145
 146    mt->region = intel_region_alloc(intel,
 147                                    tiling,
 148                                    mt->cpp,
 149                                    mt->pitch,
 150                                    mt->total_height,
 151                                    mt->pitch,
 152                                    expect_accelerated_upload);
 153
 154    if (!mt->region) {
 155        free(mt);
 156        return NULL;
 157    }
 158
 159    return mt;
 160 }
 161
 162
 163 struct intel_mipmap_tree *
 164 intel_miptree_create_for_region(struct intel_context *intel,
 165                                 GLenum target,
 166                                 GLenum internal_format,
 167                                 GLuint first_level,
 168                                 GLuint last_level,
 169                                 struct intel_region *region,
 170                                 GLuint depth0,
 171                                 GLuint compress_byte)
 172 {
 173    struct intel_mipmap_tree *mt;
 174
 175    mt = intel_miptree_create_internal(intel, target, internal_format,
 176                                       first_level, last_level,
 177                                       region->width, region->height, 1,
 178                                       region->cpp, compress_byte,
 179                                       I915_TILING_NONE);
 180    if (!mt)
 181       return mt;
 182 #if 0
 183    if (mt->pitch != region->pitch) {
 184       fprintf(stderr,
 185               "region pitch (%d) doesn't match mipmap tree pitch (%d)\n",
 186               region->pitch, mt->pitch);
 187       free(mt);
 188       return NULL;
 189    }
 190 #else
 191    /* The mipmap tree pitch is aligned to 64 bytes to make sure render
 192     * to texture works, but we don't need that for texturing from a
 193     * pixmap.  Just override it here. */
 194    mt->pitch = region->pitch;
 195 #endif
 196
 197    intel_region_reference(&mt->region, region);
 198
 199    return mt;
 200 }
 201
 202
 203 /**
 204  * intel_miptree_pitch_align:
 205  *
 206  * @intel: intel context pointer
 207  *
 208  * @mt: the miptree to compute pitch alignment for
 209  *
 210  * @pitch: the natural pitch value
 211  *
 212  * Given @pitch, compute a larger value which accounts for
 213  * any necessary alignment required by the device
 214  */
 215 int intel_miptree_pitch_align (struct intel_context *intel,
 216                                struct intel_mipmap_tree *mt,
 217                                uint32_t tiling,
 218                                int pitch)
 219 {
 220 #ifdef I915
 221    GLcontext *ctx = &intel->ctx;
 222 #endif
 223
 224    if (!mt->compressed) {
 225       int pitch_align;
 226
 227       /* XXX: Align pitch to multiple of 64 bytes for now to allow
 228        * render-to-texture to work in all cases. This should probably be
 229        * replaced at some point by some scheme to only do this when really
 230        * necessary.
 231        */
 232       pitch_align = 64;
 233
 234       if (tiling == I915_TILING_X)
 235          pitch_align = 512;
 236       else if (tiling == I915_TILING_Y)
 237          pitch_align = 128;
 238
 239       pitch = ALIGN(pitch * mt->cpp, pitch_align);
 240
 241 #ifdef I915
 242       /* XXX: At least the i915 seems very upset when the pitch is a multiple
 243        * of 1024 and sometimes 512 bytes - performance can drop by several
 244        * times. Go to the next multiple of the required alignment for now.
 245        */
 246       if (!(pitch & 511) &&
 247          (pitch + pitch_align) < (1 << ctx->Const.MaxTextureLevels))
 248          pitch += pitch_align;
 249 #endif
 250
 251       pitch /= mt->cpp;
 252    }
 253    return pitch;
 254 }
 255
 256
 257 void
 258 intel_miptree_reference(struct intel_mipmap_tree **dst,
 259                         struct intel_mipmap_tree *src)
 260 {
 261    src->refcount++;
 262    *dst = src;
 263    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 264 }
 265
 266
 267 void
 268 intel_miptree_release(struct intel_context *intel,
 269                       struct intel_mipmap_tree **mt)
 270 {
 271    if (!*mt)
 272       return;
 273
 274    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 275    if (--(*mt)->refcount <= 0) {
 276       GLuint i;
 277
 278       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 279
 280 #ifndef I915
 281       /* Free up cached binding tables holding a reference on our buffer, to
 282        * avoid excessive memory consumption.
 283        *
 284        * This isn't as aggressive as we could be, as we'd like to do
 285        * it from any time we free the last ref on a region.  But intel_region.c
 286        * is context-agnostic.  Perhaps our constant state cache should be, as
 287        * well.
 288        */
 289       brw_state_cache_bo_delete(&brw_context(&intel->ctx)->surface_cache,
 290                                 (*mt)->region->buffer);
 291 #endif
 292
 293       intel_region_release(&((*mt)->region));
 294
 295       for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
 296          free((*mt)->level[i].x_offset);
 297          free((*mt)->level[i].y_offset);
 298       }
 299
 300       free(*mt);
 301    }
 302    *mt = NULL;
 303 }
 304
 305
 306 /**
 307  * Can the image be pulled into a unified mipmap tree?  This mirrors
 308  * the completeness test in a lot of ways.
 309  *
 310  * Not sure whether I want to pass gl_texture_image here.
 311  */
 312 GLboolean
 313 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 314                           struct gl_texture_image *image)
 315 {
 316    GLboolean isCompressed = _mesa_is_format_compressed(image->TexFormat);
 317    struct intel_texture_image *intelImage = intel_texture_image(image);
 318    GLuint level = intelImage->level;
 319
 320    /* Images with borders are never pulled into mipmap trees. */
 321    if (image->Border)
 322       return GL_FALSE;
 323
 324    if (image->InternalFormat != mt->internal_format ||
 325        isCompressed != mt->compressed)
 326       return GL_FALSE;
 327
 328    if (!isCompressed &&
 329        !mt->compressed &&
 330        _mesa_get_format_bytes(image->TexFormat) != mt->cpp)
 331       return GL_FALSE;
 332
 333    /* Test image dimensions against the base level image adjusted for
 334     * minification.  This will also catch images not present in the
 335     * tree, changed targets, etc.
 336     */
 337    if (image->Width != mt->level[level].width ||
 338        image->Height != mt->level[level].height ||
 339        image->Depth != mt->level[level].depth)
 340       return GL_FALSE;
 341
 342    return GL_TRUE;
 343 }
 344
 345
 346 void
 347 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 348                              GLuint level,
 349                              GLuint nr_images,
 350                              GLuint x, GLuint y,
 351                              GLuint w, GLuint h, GLuint d)
 352 {
 353    mt->level[level].width = w;
 354    mt->level[level].height = h;
 355    mt->level[level].depth = d;
 356    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 357    mt->level[level].level_x = x;
 358    mt->level[level].level_y = y;
 359    mt->level[level].nr_images = nr_images;
 360
 361    DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
 362        level, w, h, d, x, y, mt->level[level].level_offset);
 363
 364    assert(nr_images);
 365    assert(!mt->level[level].x_offset);
 366
 367    mt->level[level].x_offset = malloc(nr_images * sizeof(GLuint));
 368    mt->level[level].x_offset[0] = mt->level[level].level_x;
 369    mt->level[level].y_offset = malloc(nr_images * sizeof(GLuint));
 370    mt->level[level].y_offset[0] = mt->level[level].level_y;
 371 }
 372
 373
 374 void
 375 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 376                                GLuint level, GLuint img,
 377                                GLuint x, GLuint y)
 378 {
 379    if (img == 0 && level == 0)
 380       assert(x == 0 && y == 0);
 381
 382    assert(img < mt->level[level].nr_images);
 383
 384    mt->level[level].x_offset[img] = mt->level[level].level_x + x;
 385    mt->level[level].y_offset[img] = mt->level[level].level_y + y;
 386
 387    DBG("%s level %d img %d pos %d,%d\n",
 388        __FUNCTION__, level, img,
 389        mt->level[level].x_offset[img], mt->level[level].y_offset[img]);
 390 }
 391
 392
 393 void
 394 intel_miptree_get_image_offset(struct intel_mipmap_tree *mt,
 395                                GLuint level, GLuint face, GLuint depth,
 396                                GLuint *x, GLuint *y)
 397 {
 398    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB) {
 399       *x = mt->level[level].x_offset[face];
 400       *y = mt->level[level].y_offset[face];
 401    } else if (mt->target == GL_TEXTURE_3D) {
 402       *x = mt->level[level].x_offset[depth];
 403       *y = mt->level[level].y_offset[depth];
 404    } else {
 405       *x = mt->level[level].x_offset[0];
 406       *y = mt->level[level].y_offset[0];
 407    }
 408 }
 409
 410 /**
 411  * Map a teximage in a mipmap tree.
 412  * \param row_stride  returns row stride in bytes
 413  * \param image_stride  returns image stride in bytes (for 3D textures).
 414  * \param image_offsets pointer to array of pixel offsets from the returned
 415  *        pointer to each depth image
 416  * \return address of mapping
 417  */
 418 GLubyte *
 419 intel_miptree_image_map(struct intel_context * intel,
 420                         struct intel_mipmap_tree * mt,
 421                         GLuint face,
 422                         GLuint level,
 423                         GLuint * row_stride, GLuint * image_offsets)
 424 {
 425    GLuint x, y;
 426    DBG("%s \n", __FUNCTION__);
 427
 428    if (row_stride)
 429       *row_stride = mt->pitch * mt->cpp;
 430
 431    if (mt->target == GL_TEXTURE_3D) {
 432       int i;
 433
 434       for (i = 0; i < mt->level[level].depth; i++) {
 435
 436          intel_miptree_get_image_offset(mt, level, face, i,
 437                                         &x, &y);
 438          image_offsets[i] = x + y * mt->pitch;
 439       }
 440
 441       return intel_region_map(intel, mt->region);
 442    } else {
 443       assert(mt->level[level].depth == 1);
 444       intel_miptree_get_image_offset(mt, level, face, 0,
 445                                      &x, &y);
 446       image_offsets[0] = 0;
 447
 448       return intel_region_map(intel, mt->region) +
 449          (x + y * mt->pitch) * mt->cpp;
 450    }
 451 }
 452
 453
 454 void
 455 intel_miptree_image_unmap(struct intel_context *intel,
 456                           struct intel_mipmap_tree *mt)
 457 {
 458    DBG("%s\n", __FUNCTION__);
 459    intel_region_unmap(intel, mt->region);
 460 }
 461
 462
 463 /**
 464  * Upload data for a particular image.
 465  */
 466 void
 467 intel_miptree_image_data(struct intel_context *intel,
 468                          struct intel_mipmap_tree *dst,
 469                          GLuint face,
 470                          GLuint level,
 471                          void *src,
 472                          GLuint src_row_pitch,
 473                          GLuint src_image_pitch)
 474 {
 475    const GLuint depth = dst->level[level].depth;
 476    GLuint i;
 477
 478    DBG("%s: %d/%d\n", __FUNCTION__, face, level);
 479    for (i = 0; i < depth; i++) {
 480       GLuint dst_x, dst_y, height;
 481
 482       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 483
 484       height = dst->level[level].height;
 485       if(dst->compressed)
 486          height = (height + 3) / 4;
 487
 488       intel_region_data(intel,
 489                         dst->region, 0, dst_x, dst_y,
 490                         src,
 491                         src_row_pitch,
 492                         0, 0,                             /* source x, y */
 493                         dst->level[level].width, height); /* width, height */
 494
 495       src = (char *)src + src_image_pitch * dst->cpp;
 496    }
 497 }
 498
 499
 500 /**
 501  * Copy mipmap image between trees
 502  */
 503 void
 504 intel_miptree_image_copy(struct intel_context *intel,
 505                          struct intel_mipmap_tree *dst,
 506                          GLuint face, GLuint level,
 507                          struct intel_mipmap_tree *src)
 508 {
 509    GLuint width = src->level[level].width;
 510    GLuint height = src->level[level].height;
 511    GLuint depth = src->level[level].depth;
 512    GLuint src_x, src_y, dst_x, dst_y;
 513    GLuint i;
 514    GLboolean success;
 515
 516    if (dst->compressed) {
 517        GLuint align_w, align_h;
 518
 519        intel_get_texture_alignment_unit(dst->internal_format,
 520                                         &align_w, &align_h);
 521        height = (height + 3) / 4;
 522        width = ALIGN(width, align_w);
 523    }
 524
 525    for (i = 0; i < depth; i++) {
 526       intel_miptree_get_image_offset(src, level, face, i, &src_x, &src_y);
 527       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 528       success = intel_region_copy(intel,
 529                                   dst->region, 0, dst_x, dst_y,
 530                                   src->region, 0, src_x, src_y, width, height,
 531                                   GL_COPY);
 532       if (!success) {
 533          GLubyte *src_ptr, *dst_ptr;
 534
 535          src_ptr = intel_region_map(intel, src->region);
 536          dst_ptr = intel_region_map(intel, dst->region);
 537
 538          _mesa_copy_rect(dst_ptr + dst->cpp * (dst_x + dst_y * dst->pitch),
 539                          dst->cpp,
 540                          dst->pitch,
 541                          0, 0, width, height,
 542                          src_ptr + src->cpp * (src_x + src_y * src->pitch),
 543                          src->pitch,
 544                          0, 0);
 545          intel_region_unmap(intel, src->region);
 546          intel_region_unmap(intel, dst->region);
 547       }
 548    }
 549 }