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            internal_format == GL_DEPTH_STENCIL_EXT))
 120          tiling = I915_TILING_Y;
 121       else
 122          tiling = I915_TILING_X;
 123    } else
 124       tiling = I915_TILING_NONE;
 125
 126    mt = intel_miptree_create_internal(intel, target, internal_format,
 127                                       first_level, last_level, width0,
 128                                       height0, depth0, cpp, compress_byte,
 129                                       tiling);
 130    /*
 131     * pitch == 0 || height == 0  indicates the null texture
 132     */
 133    if (!mt || !mt->pitch || !mt->total_height)
 134       return NULL;
 135
 136    mt->region = intel_region_alloc(intel,
 137                                    tiling,
 138                                    mt->cpp,
 139                                    mt->pitch,
 140                                    mt->total_height,
 141                                    mt->pitch,
 142                                    expect_accelerated_upload);
 143
 144    if (!mt->region) {
 145        free(mt);
 146        return NULL;
 147    }
 148
 149    return mt;
 150 }
 151
 152 struct intel_mipmap_tree *
 153 intel_miptree_create_for_region(struct intel_context *intel,
 154                                 GLenum target,
 155                                 GLenum internal_format,
 156                                 GLuint first_level,
 157                                 GLuint last_level,
 158                                 struct intel_region *region,
 159                                 GLuint depth0,
 160                                 GLuint compress_byte)
 161 {
 162    struct intel_mipmap_tree *mt;
 163
 164    mt = intel_miptree_create_internal(intel, target, internal_format,
 165                                       first_level, last_level,
 166                                       region->width, region->height, 1,
 167                                       region->cpp, compress_byte,
 168                                       I915_TILING_NONE);
 169    if (!mt)
 170       return mt;
 171 #if 0
 172    if (mt->pitch != region->pitch) {
 173       fprintf(stderr,
 174               "region pitch (%d) doesn't match mipmap tree pitch (%d)\n",
 175               region->pitch, mt->pitch);
 176       free(mt);
 177       return NULL;
 178    }
 179 #else
 180    /* The mipmap tree pitch is aligned to 64 bytes to make sure render
 181     * to texture works, but we don't need that for texturing from a
 182     * pixmap.  Just override it here. */
 183    mt->pitch = region->pitch;
 184 #endif
 185
 186    intel_region_reference(&mt->region, region);
 187
 188    return mt;
 189  }
 190
 191 /**
 192  * intel_miptree_pitch_align:
 193  *
 194  * @intel: intel context pointer
 195  *
 196  * @mt: the miptree to compute pitch alignment for
 197  *
 198  * @pitch: the natural pitch value
 199  *
 200  * Given @pitch, compute a larger value which accounts for
 201  * any necessary alignment required by the device
 202  */
 203
 204 int intel_miptree_pitch_align (struct intel_context *intel,
 205                                struct intel_mipmap_tree *mt,
 206                                uint32_t tiling,
 207                                int pitch)
 208 {
 209 #ifdef I915
 210    GLcontext *ctx = &intel->ctx;
 211 #endif
 212
 213    if (!mt->compressed) {
 214       int pitch_align;
 215
 216       if (intel->ttm) {
 217          /* XXX: Align pitch to multiple of 64 bytes for now to allow
 218           * render-to-texture to work in all cases. This should probably be
 219           * replaced at some point by some scheme to only do this when really
 220           * necessary.
 221           */
 222          pitch_align = 64;
 223       } else {
 224          pitch_align = 4;
 225       }
 226
 227       if (tiling == I915_TILING_X)
 228          pitch_align = 512;
 229       else if (tiling == I915_TILING_Y)
 230          pitch_align = 128;
 231
 232       pitch = ALIGN(pitch * mt->cpp, pitch_align);
 233
 234 #ifdef I915
 235       /* XXX: At least the i915 seems very upset when the pitch is a multiple
 236        * of 1024 and sometimes 512 bytes - performance can drop by several
 237        * times. Go to the next multiple of the required alignment for now.
 238        */
 239       if (!(pitch & 511) &&
 240          (pitch + pitch_align) < (1 << ctx->Const.MaxTextureLevels))
 241          pitch += pitch_align;
 242 #endif
 243
 244       pitch /= mt->cpp;
 245    }
 246    return pitch;
 247 }
 248
 249 void
 250 intel_miptree_reference(struct intel_mipmap_tree **dst,
 251                         struct intel_mipmap_tree *src)
 252 {
 253    src->refcount++;
 254    *dst = src;
 255    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 256 }
 257
 258 void
 259 intel_miptree_release(struct intel_context *intel,
 260                       struct intel_mipmap_tree **mt)
 261 {
 262    if (!*mt)
 263       return;
 264
 265    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 266    if (--(*mt)->refcount <= 0) {
 267       GLuint i;
 268
 269       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 270
 271       intel_region_release(&((*mt)->region));
 272
 273       for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
 274          if ((*mt)->level[i].image_offset)
 275             free((*mt)->level[i].image_offset);
 276
 277       free(*mt);
 278    }
 279    *mt = NULL;
 280 }
 281
 282
 283
 284
 285 /* Can the image be pulled into a unified mipmap tree.  This mirrors
 286  * the completeness test in a lot of ways.
 287  *
 288  * Not sure whether I want to pass gl_texture_image here.
 289  */
 290 GLboolean
 291 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 292                           struct gl_texture_image *image,
 293                           GLuint face, GLuint level)
 294 {
 295    /* Images with borders are never pulled into mipmap trees.
 296     */
 297    if (image->Border ||
 298        ((image->_BaseFormat == GL_DEPTH_COMPONENT) &&
 299         ((image->TexObject->WrapS == GL_CLAMP_TO_BORDER) ||
 300          (image->TexObject->WrapT == GL_CLAMP_TO_BORDER))))
 301       return GL_FALSE;
 302
 303    if (image->InternalFormat != mt->internal_format ||
 304        image->IsCompressed != mt->compressed)
 305       return GL_FALSE;
 306
 307    if (!image->IsCompressed &&
 308        !mt->compressed &&
 309        image->TexFormat->TexelBytes != mt->cpp)
 310       return GL_FALSE;
 311
 312    /* Test image dimensions against the base level image adjusted for
 313     * minification.  This will also catch images not present in the
 314     * tree, changed targets, etc.
 315     */
 316    if (image->Width != mt->level[level].width ||
 317        image->Height != mt->level[level].height ||
 318        image->Depth != mt->level[level].depth)
 319       return GL_FALSE;
 320
 321    return GL_TRUE;
 322 }
 323
 324
 325 void
 326 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 327                              GLuint level,
 328                              GLuint nr_images,
 329                              GLuint x, GLuint y,
 330                              GLuint w, GLuint h, GLuint d)
 331 {
 332    mt->level[level].width = w;
 333    mt->level[level].height = h;
 334    mt->level[level].depth = d;
 335    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 336    mt->level[level].nr_images = nr_images;
 337
 338    DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
 339        level, w, h, d, x, y, mt->level[level].level_offset);
 340
 341    /* Not sure when this would happen, but anyway:
 342     */
 343    if (mt->level[level].image_offset) {
 344       free(mt->level[level].image_offset);
 345       mt->level[level].image_offset = NULL;
 346    }
 347
 348    assert(nr_images);
 349
 350    mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
 351    mt->level[level].image_offset[0] = 0;
 352 }
 353
 354
 355
 356 void
 357 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 358                                GLuint level, GLuint img,
 359                                GLuint x, GLuint y)
 360 {
 361    if (img == 0 && level == 0)
 362       assert(x == 0 && y == 0);
 363
 364    assert(img < mt->level[level].nr_images);
 365
 366    mt->level[level].image_offset[img] = (x + y * mt->pitch) * mt->cpp;
 367
 368    DBG("%s level %d img %d pos %d,%d image_offset %x\n",
 369        __FUNCTION__, level, img, x, y, mt->level[level].image_offset[img]);
 370 }
 371
 372
 373 /* Although we use the image_offset[] array to store relative offsets
 374  * to cube faces, Mesa doesn't know anything about this and expects
 375  * each cube face to be treated as a separate image.
 376  *
 377  * These functions present that view to mesa:
 378  */
 379 const GLuint *
 380 intel_miptree_depth_offsets(struct intel_mipmap_tree *mt, GLuint level)
 381 {
 382    static const GLuint zero = 0;
 383
 384    if (mt->target != GL_TEXTURE_3D || mt->level[level].nr_images == 1)
 385       return &zero;
 386    else
 387       return mt->level[level].image_offset;
 388 }
 389
 390
 391 GLuint
 392 intel_miptree_image_offset(struct intel_mipmap_tree *mt,
 393                            GLuint face, GLuint level)
 394 {
 395    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
 396       return (mt->level[level].level_offset +
 397               mt->level[level].image_offset[face]);
 398    else
 399       return mt->level[level].level_offset;
 400 }
 401
 402
 403
 404 /**
 405  * Map a teximage in a mipmap tree.
 406  * \param row_stride  returns row stride in bytes
 407  * \param image_stride  returns image stride in bytes (for 3D textures).
 408  * \param image_offsets pointer to array of pixel offsets from the returned
 409  *        pointer to each depth image
 410  * \return address of mapping
 411  */
 412 GLubyte *
 413 intel_miptree_image_map(struct intel_context * intel,
 414                         struct intel_mipmap_tree * mt,
 415                         GLuint face,
 416                         GLuint level,
 417                         GLuint * row_stride, GLuint * image_offsets)
 418 {
 419    DBG("%s \n", __FUNCTION__);
 420
 421    if (row_stride)
 422       *row_stride = mt->pitch * mt->cpp;
 423
 424    if (mt->target == GL_TEXTURE_3D) {
 425       int i;
 426
 427       for (i = 0; i < mt->level[level].depth; i++)
 428          image_offsets[i] = mt->level[level].image_offset[i] / mt->cpp;
 429    } else {
 430       assert(mt->level[level].depth == 1);
 431       assert(mt->target == GL_TEXTURE_CUBE_MAP ||
 432              mt->level[level].image_offset[0] == 0);
 433       image_offsets[0] = 0;
 434    }
 435
 436    return (intel_region_map(intel, mt->region) +
 437            intel_miptree_image_offset(mt, face, level));
 438 }
 439
 440 void
 441 intel_miptree_image_unmap(struct intel_context *intel,
 442                           struct intel_mipmap_tree *mt)
 443 {
 444    DBG("%s\n", __FUNCTION__);
 445    intel_region_unmap(intel, mt->region);
 446 }
 447
 448
 449
 450 /* Upload data for a particular image.
 451  */
 452 void
 453 intel_miptree_image_data(struct intel_context *intel,
 454                          struct intel_mipmap_tree *dst,
 455                          GLuint face,
 456                          GLuint level,
 457                          void *src,
 458                          GLuint src_row_pitch,
 459                          GLuint src_image_pitch)
 460 {
 461    GLuint depth = dst->level[level].depth;
 462    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 463    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 464    GLuint i;
 465    GLuint height = 0;
 466
 467    DBG("%s: %d/%d\n", __FUNCTION__, face, level);
 468    for (i = 0; i < depth; i++) {
 469       height = dst->level[level].height;
 470       if(dst->compressed)
 471          height = (height + 3) / 4;
 472       intel_region_data(intel,
 473                         dst->region,
 474                         dst_offset + dst_depth_offset[i], /* dst_offset */
 475                         0, 0,                             /* dstx, dsty */
 476                         src,
 477                         src_row_pitch,
 478                         0, 0,                             /* source x, y */
 479                         dst->level[level].width, height); /* width, height */
 480
 481       src += src_image_pitch * dst->cpp;
 482    }
 483 }
 484
 485 extern GLuint intel_compressed_alignment(GLenum);
 486 /* Copy mipmap image between trees
 487  */
 488 void
 489 intel_miptree_image_copy(struct intel_context *intel,
 490                          struct intel_mipmap_tree *dst,
 491                          GLuint face, GLuint level,
 492                          struct intel_mipmap_tree *src)
 493 {
 494    GLuint width = src->level[level].width;
 495    GLuint height = src->level[level].height;
 496    GLuint depth = src->level[level].depth;
 497    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 498    GLuint src_offset = intel_miptree_image_offset(src, face, level);
 499    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 500    const GLuint *src_depth_offset = intel_miptree_depth_offsets(src, level);
 501    GLuint i;
 502    GLboolean success;
 503
 504    if (dst->compressed) {
 505        GLuint alignment = intel_compressed_alignment(dst->internal_format);
 506        height = (height + 3) / 4;
 507        width = ((width + alignment - 1) & ~(alignment - 1));
 508    }
 509
 510    for (i = 0; i < depth; i++) {
 511       success = intel_region_copy(intel,
 512                                   dst->region, dst_offset + dst_depth_offset[i],
 513                                   0, 0,
 514                                   src->region, src_offset + src_depth_offset[i],
 515                                   0, 0, width, height, GL_COPY);
 516       if (!success) {
 517          GLubyte *src_ptr, *dst_ptr;
 518
 519          src_ptr = intel_region_map(intel, src->region);
 520          dst_ptr = intel_region_map(intel, dst->region);
 521
 522          _mesa_copy_rect(dst_ptr + dst_offset + dst_depth_offset[i],
 523                          dst->cpp,
 524                          dst->pitch,
 525                          0, 0, width, height,
 526                          src_ptr + src_offset + src_depth_offset[i],
 527                          src->pitch,
 528                          0, 0);
 529          intel_region_unmap(intel, src->region);
 530          intel_region_unmap(intel, dst->region);
 531       }
 532    }
 533 }