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 internal_format,
 105                      GLuint first_level,
 106                      GLuint last_level,
 107                      GLuint width0,
 108                      GLuint height0,
 109                      GLuint depth0, GLuint cpp, GLuint compress_byte,
 110                      GLboolean expect_accelerated_upload)
 111 {
 112    struct intel_mipmap_tree *mt;
 113    uint32_t tiling;
 114
 115    if (intel->use_texture_tiling && compress_byte == 0 &&
 116        intel->intelScreen->kernel_exec_fencing) {
 117       if (IS_965(intel->intelScreen->deviceID) &&
 118           internal_format == GL_DEPTH_COMPONENT)
 119          tiling = I915_TILING_Y;
 120       else
 121          tiling = I915_TILING_X;
 122    } else
 123       tiling = I915_TILING_NONE;
 124
 125    mt = intel_miptree_create_internal(intel, target, internal_format,
 126                                       first_level, last_level, width0,
 127                                       height0, depth0, cpp, compress_byte,
 128                                       tiling);
 129    /*
 130     * pitch == 0 || height == 0  indicates the null texture
 131     */
 132    if (!mt || !mt->pitch || !mt->total_height)
 133       return NULL;
 134
 135    mt->region = intel_region_alloc(intel,
 136                                    tiling,
 137                                    mt->cpp,
 138                                    mt->pitch,
 139                                    mt->total_height,
 140                                    mt->pitch,
 141                                    expect_accelerated_upload);
 142
 143    if (!mt->region) {
 144        free(mt);
 145        return NULL;
 146    }
 147
 148    return mt;
 149 }
 150
 151 struct intel_mipmap_tree *
 152 intel_miptree_create_for_region(struct intel_context *intel,
 153                                 GLenum target,
 154                                 GLenum internal_format,
 155                                 GLuint first_level,
 156                                 GLuint last_level,
 157                                 struct intel_region *region,
 158                                 GLuint depth0,
 159                                 GLuint compress_byte)
 160 {
 161    struct intel_mipmap_tree *mt;
 162
 163    mt = intel_miptree_create_internal(intel, target, internal_format,
 164                                       first_level, last_level,
 165                                       region->width, region->height, 1,
 166                                       region->cpp, compress_byte,
 167                                       I915_TILING_NONE);
 168    if (!mt)
 169       return mt;
 170 #if 0
 171    if (mt->pitch != region->pitch) {
 172       fprintf(stderr,
 173               "region pitch (%d) doesn't match mipmap tree pitch (%d)\n",
 174               region->pitch, mt->pitch);
 175       free(mt);
 176       return NULL;
 177    }
 178 #else
 179    /* The mipmap tree pitch is aligned to 64 bytes to make sure render
 180     * to texture works, but we don't need that for texturing from a
 181     * pixmap.  Just override it here. */
 182    mt->pitch = region->pitch;
 183 #endif
 184
 185    intel_region_reference(&mt->region, region);
 186
 187    return mt;
 188  }
 189
 190 /**
 191  * intel_miptree_pitch_align:
 192  *
 193  * @intel: intel context pointer
 194  *
 195  * @mt: the miptree to compute pitch alignment for
 196  *
 197  * @pitch: the natural pitch value
 198  *
 199  * Given @pitch, compute a larger value which accounts for
 200  * any necessary alignment required by the device
 201  */
 202
 203 int intel_miptree_pitch_align (struct intel_context *intel,
 204                                struct intel_mipmap_tree *mt,
 205                                uint32_t tiling,
 206                                int pitch)
 207 {
 208 #ifdef I915
 209    GLcontext *ctx = &intel->ctx;
 210 #endif
 211
 212    if (!mt->compressed) {
 213       int pitch_align;
 214
 215       if (intel->ttm) {
 216          /* XXX: Align pitch to multiple of 64 bytes for now to allow
 217           * render-to-texture to work in all cases. This should probably be
 218           * replaced at some point by some scheme to only do this when really
 219           * necessary.
 220           */
 221          pitch_align = 64;
 222       } else {
 223          pitch_align = 4;
 224       }
 225
 226       if (tiling == I915_TILING_X)
 227          pitch_align = 512;
 228       else if (tiling == I915_TILING_Y)
 229          pitch_align = 128;
 230
 231       pitch = ALIGN(pitch * mt->cpp, pitch_align);
 232
 233 #ifdef I915
 234       /* XXX: At least the i915 seems very upset when the pitch is a multiple
 235        * of 1024 and sometimes 512 bytes - performance can drop by several
 236        * times. Go to the next multiple of the required alignment for now.
 237        */
 238       if (!(pitch & 511) &&
 239          (pitch + pitch_align) < (1 << ctx->Const.MaxTextureLevels))
 240          pitch += pitch_align;
 241 #endif
 242
 243       pitch /= mt->cpp;
 244    }
 245    return pitch;
 246 }
 247
 248 void
 249 intel_miptree_reference(struct intel_mipmap_tree **dst,
 250                         struct intel_mipmap_tree *src)
 251 {
 252    src->refcount++;
 253    *dst = src;
 254    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 255 }
 256
 257 void
 258 intel_miptree_release(struct intel_context *intel,
 259                       struct intel_mipmap_tree **mt)
 260 {
 261    if (!*mt)
 262       return;
 263
 264    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 265    if (--(*mt)->refcount <= 0) {
 266       GLuint i;
 267
 268       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 269
 270       intel_region_release(&((*mt)->region));
 271
 272       for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
 273          if ((*mt)->level[i].image_offset)
 274             free((*mt)->level[i].image_offset);
 275
 276       free(*mt);
 277    }
 278    *mt = NULL;
 279 }
 280
 281
 282
 283
 284 /* Can the image be pulled into a unified mipmap tree.  This mirrors
 285  * the completeness test in a lot of ways.
 286  *
 287  * Not sure whether I want to pass gl_texture_image here.
 288  */
 289 GLboolean
 290 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 291                           struct gl_texture_image *image,
 292                           GLuint face, GLuint level)
 293 {
 294    /* Images with borders are never pulled into mipmap trees.
 295     */
 296    if (image->Border ||
 297        ((image->_BaseFormat == GL_DEPTH_COMPONENT) &&
 298         ((image->TexObject->WrapS == GL_CLAMP_TO_BORDER) ||
 299          (image->TexObject->WrapT == GL_CLAMP_TO_BORDER))))
 300       return GL_FALSE;
 301
 302    if (image->InternalFormat != mt->internal_format ||
 303        image->IsCompressed != mt->compressed)
 304       return GL_FALSE;
 305
 306    if (!image->IsCompressed &&
 307        !mt->compressed &&
 308        image->TexFormat->TexelBytes != mt->cpp)
 309       return GL_FALSE;
 310
 311    /* Test image dimensions against the base level image adjusted for
 312     * minification.  This will also catch images not present in the
 313     * tree, changed targets, etc.
 314     */
 315    if (image->Width != mt->level[level].width ||
 316        image->Height != mt->level[level].height ||
 317        image->Depth != mt->level[level].depth)
 318       return GL_FALSE;
 319
 320    return GL_TRUE;
 321 }
 322
 323
 324 void
 325 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 326                              GLuint level,
 327                              GLuint nr_images,
 328                              GLuint x, GLuint y,
 329                              GLuint w, GLuint h, GLuint d)
 330 {
 331    mt->level[level].width = w;
 332    mt->level[level].height = h;
 333    mt->level[level].depth = d;
 334    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 335    mt->level[level].nr_images = nr_images;
 336
 337    DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
 338        level, w, h, d, x, y, mt->level[level].level_offset);
 339
 340    /* Not sure when this would happen, but anyway:
 341     */
 342    if (mt->level[level].image_offset) {
 343       free(mt->level[level].image_offset);
 344       mt->level[level].image_offset = NULL;
 345    }
 346
 347    assert(nr_images);
 348
 349    mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
 350    mt->level[level].image_offset[0] = 0;
 351 }
 352
 353
 354
 355 void
 356 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 357                                GLuint level, GLuint img,
 358                                GLuint x, GLuint y)
 359 {
 360    if (img == 0 && level == 0)
 361       assert(x == 0 && y == 0);
 362
 363    assert(img < mt->level[level].nr_images);
 364
 365    mt->level[level].image_offset[img] = (x + y * mt->pitch) * mt->cpp;
 366
 367    DBG("%s level %d img %d pos %d,%d image_offset %x\n",
 368        __FUNCTION__, level, img, x, y, mt->level[level].image_offset[img]);
 369 }
 370
 371
 372 /* Although we use the image_offset[] array to store relative offsets
 373  * to cube faces, Mesa doesn't know anything about this and expects
 374  * each cube face to be treated as a separate image.
 375  *
 376  * These functions present that view to mesa:
 377  */
 378 const GLuint *
 379 intel_miptree_depth_offsets(struct intel_mipmap_tree *mt, GLuint level)
 380 {
 381    static const GLuint zero = 0;
 382
 383    if (mt->target != GL_TEXTURE_3D || mt->level[level].nr_images == 1)
 384       return &zero;
 385    else
 386       return mt->level[level].image_offset;
 387 }
 388
 389
 390 GLuint
 391 intel_miptree_image_offset(struct intel_mipmap_tree *mt,
 392                            GLuint face, GLuint level)
 393 {
 394    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
 395       return (mt->level[level].level_offset +
 396               mt->level[level].image_offset[face]);
 397    else
 398       return mt->level[level].level_offset;
 399 }
 400
 401
 402
 403 /**
 404  * Map a teximage in a mipmap tree.
 405  * \param row_stride  returns row stride in bytes
 406  * \param image_stride  returns image stride in bytes (for 3D textures).
 407  * \param image_offsets pointer to array of pixel offsets from the returned
 408  *        pointer to each depth image
 409  * \return address of mapping
 410  */
 411 GLubyte *
 412 intel_miptree_image_map(struct intel_context * intel,
 413                         struct intel_mipmap_tree * mt,
 414                         GLuint face,
 415                         GLuint level,
 416                         GLuint * row_stride, GLuint * image_offsets)
 417 {
 418    DBG("%s \n", __FUNCTION__);
 419
 420    if (row_stride)
 421       *row_stride = mt->pitch * mt->cpp;
 422
 423    if (mt->target == GL_TEXTURE_3D) {
 424       int i;
 425
 426       for (i = 0; i < mt->level[level].depth; i++)
 427          image_offsets[i] = mt->level[level].image_offset[i] / mt->cpp;
 428    } else {
 429       assert(mt->level[level].depth == 1);
 430       assert(mt->target == GL_TEXTURE_CUBE_MAP ||
 431              mt->level[level].image_offset[0] == 0);
 432       image_offsets[0] = 0;
 433    }
 434
 435    return (intel_region_map(intel, mt->region) +
 436            intel_miptree_image_offset(mt, face, level));
 437 }
 438
 439 void
 440 intel_miptree_image_unmap(struct intel_context *intel,
 441                           struct intel_mipmap_tree *mt)
 442 {
 443    DBG("%s\n", __FUNCTION__);
 444    intel_region_unmap(intel, mt->region);
 445 }
 446
 447
 448
 449 /* Upload data for a particular image.
 450  */
 451 void
 452 intel_miptree_image_data(struct intel_context *intel,
 453                          struct intel_mipmap_tree *dst,
 454                          GLuint face,
 455                          GLuint level,
 456                          void *src,
 457                          GLuint src_row_pitch,
 458                          GLuint src_image_pitch)
 459 {
 460    GLuint depth = dst->level[level].depth;
 461    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 462    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 463    GLuint i;
 464    GLuint height = 0;
 465
 466    DBG("%s: %d/%d\n", __FUNCTION__, face, level);
 467    for (i = 0; i < depth; i++) {
 468       height = dst->level[level].height;
 469       if(dst->compressed)
 470          height = (height + 3) / 4;
 471       intel_region_data(intel,
 472                         dst->region,
 473                         dst_offset + dst_depth_offset[i], /* dst_offset */
 474                         0, 0,                             /* dstx, dsty */
 475                         src,
 476                         src_row_pitch,
 477                         0, 0,                             /* source x, y */
 478                         dst->level[level].width, height); /* width, height */
 479
 480       src += src_image_pitch * dst->cpp;
 481    }
 482 }
 483
 484 extern GLuint intel_compressed_alignment(GLenum);
 485 /* Copy mipmap image between trees
 486  */
 487 void
 488 intel_miptree_image_copy(struct intel_context *intel,
 489                          struct intel_mipmap_tree *dst,
 490                          GLuint face, GLuint level,
 491                          struct intel_mipmap_tree *src)
 492 {
 493    GLuint width = src->level[level].width;
 494    GLuint height = src->level[level].height;
 495    GLuint depth = src->level[level].depth;
 496    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 497    GLuint src_offset = intel_miptree_image_offset(src, face, level);
 498    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 499    const GLuint *src_depth_offset = intel_miptree_depth_offsets(src, level);
 500    GLuint i;
 501
 502    if (dst->compressed) {
 503        GLuint alignment = intel_compressed_alignment(dst->internal_format);
 504        height = (height + 3) / 4;
 505        width = ((width + alignment - 1) & ~(alignment - 1));
 506    }
 507
 508    for (i = 0; i < depth; i++) {
 509       intel_region_copy(intel,
 510                         dst->region, dst_offset + dst_depth_offset[i],
 511                         0,
 512                         0,
 513                         src->region, src_offset + src_depth_offset[i],
 514                         0, 0, width, height, GL_COPY);
 515    }
 516
 517 }