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_tex.h"
  33 #include "main/enums.h"
  34 #include "main/formats.h"
  35
  36 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  37
  38
  39 static GLenum
  40 target_to_target(GLenum target)
  41 {
  42    switch (target) {
  43    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  44    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  45    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  46    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  47    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  48    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  49       return GL_TEXTURE_CUBE_MAP_ARB;
  50    default:
  51       return target;
  52    }
  53 }
  54
  55
  56 static struct intel_mipmap_tree *
  57 intel_miptree_create_internal(struct intel_context *intel,
  58                               GLenum target,
  59                               gl_format format,
  60                               GLuint first_level,
  61                               GLuint last_level,
  62                               GLuint width0,
  63                               GLuint height0,
  64                               GLuint depth0)
  65 {
  66    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  67    int compress_byte = 0;
  68
  69    DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
  70        _mesa_lookup_enum_by_nr(target),
  71        _mesa_get_format_name(format),
  72        first_level, last_level, mt);
  73
  74    if (_mesa_is_format_compressed(format))
  75       compress_byte = intel_compressed_num_bytes(format);
  76
  77    mt->target = target_to_target(target);
  78    mt->format = 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 : _mesa_get_format_bytes(mt->format);
  85    mt->compressed = compress_byte ? 1 : 0;
  86    mt->refcount = 1;
  87
  88 #ifdef I915
  89    (void) intel;
  90    if (intel->is_945)
  91       i945_miptree_layout(mt);
  92    else
  93       i915_miptree_layout(mt);
  94 #else
  95    brw_miptree_layout(intel, mt);
  96 #endif
  97
  98    return mt;
  99 }
 100
 101
 102 struct intel_mipmap_tree *
 103 intel_miptree_create(struct intel_context *intel,
 104                      GLenum target,
 105                      gl_format format,
 106                      GLuint first_level,
 107                      GLuint last_level,
 108                      GLuint width0,
 109                      GLuint height0,
 110                      GLuint depth0,
 111                      GLboolean expect_accelerated_upload)
 112 {
 113    struct intel_mipmap_tree *mt;
 114    uint32_t tiling = I915_TILING_NONE;
 115    GLenum base_format = _mesa_get_format_base_format(format);
 116
 117    if (intel->use_texture_tiling && !_mesa_is_format_compressed(format)) {
 118       if (intel->gen >= 4 &&
 119           (base_format == GL_DEPTH_COMPONENT ||
 120            base_format == GL_DEPTH_STENCIL_EXT))
 121          tiling = I915_TILING_Y;
 122       else if (width0 >= 64)
 123          tiling = I915_TILING_X;
 124    }
 125
 126    mt = intel_miptree_create_internal(intel, target, format,
 127                                       first_level, last_level, width0,
 128                                       height0, depth0);
 129    /*
 130     * pitch == 0 || height == 0  indicates the null texture
 131     */
 132    if (!mt || !mt->total_width || !mt->total_height) {
 133       free(mt);
 134       return NULL;
 135    }
 136
 137    mt->region = intel_region_alloc(intel->intelScreen,
 138                                    tiling,
 139                                    mt->cpp,
 140                                    mt->total_width,
 141                                    mt->total_height,
 142                                    expect_accelerated_upload);
 143
 144    if (!mt->region) {
 145        free(mt);
 146        return NULL;
 147    }
 148
 149    return mt;
 150 }
 151
 152
 153 struct intel_mipmap_tree *
 154 intel_miptree_create_for_region(struct intel_context *intel,
 155                                 GLenum target,
 156                                 gl_format format,
 157                                 struct intel_region *region)
 158 {
 159    struct intel_mipmap_tree *mt;
 160
 161    mt = intel_miptree_create_internal(intel, target, format,
 162                                       0, 0,
 163                                       region->width, region->height, 1);
 164    if (!mt)
 165       return mt;
 166
 167    intel_region_reference(&mt->region, region);
 168
 169    return mt;
 170 }
 171
 172 void
 173 intel_miptree_reference(struct intel_mipmap_tree **dst,
 174                         struct intel_mipmap_tree *src)
 175 {
 176    src->refcount++;
 177    *dst = src;
 178    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 179 }
 180
 181
 182 void
 183 intel_miptree_release(struct intel_context *intel,
 184                       struct intel_mipmap_tree **mt)
 185 {
 186    if (!*mt)
 187       return;
 188
 189    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 190    if (--(*mt)->refcount <= 0) {
 191       GLuint i;
 192
 193       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 194
 195       intel_region_release(&((*mt)->region));
 196       intel_region_release(&((*mt)->hiz_region));
 197
 198       for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
 199          free((*mt)->level[i].x_offset);
 200          free((*mt)->level[i].y_offset);
 201       }
 202
 203       free(*mt);
 204    }
 205    *mt = NULL;
 206 }
 207
 208
 209 /**
 210  * Can the image be pulled into a unified mipmap tree?  This mirrors
 211  * the completeness test in a lot of ways.
 212  *
 213  * Not sure whether I want to pass gl_texture_image here.
 214  */
 215 GLboolean
 216 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 217                           struct gl_texture_image *image)
 218 {
 219    struct intel_texture_image *intelImage = intel_texture_image(image);
 220    GLuint level = intelImage->base.Base.Level;
 221
 222    /* Images with borders are never pulled into mipmap trees. */
 223    if (image->Border)
 224       return GL_FALSE;
 225
 226    if (image->TexFormat != mt->format)
 227       return GL_FALSE;
 228
 229    /* Test image dimensions against the base level image adjusted for
 230     * minification.  This will also catch images not present in the
 231     * tree, changed targets, etc.
 232     */
 233    if (image->Width != mt->level[level].width ||
 234        image->Height != mt->level[level].height ||
 235        image->Depth != mt->level[level].depth)
 236       return GL_FALSE;
 237
 238    return GL_TRUE;
 239 }
 240
 241
 242 void
 243 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 244                              GLuint level,
 245                              GLuint nr_images,
 246                              GLuint x, GLuint y,
 247                              GLuint w, GLuint h, GLuint d)
 248 {
 249    mt->level[level].width = w;
 250    mt->level[level].height = h;
 251    mt->level[level].depth = d;
 252    mt->level[level].level_x = x;
 253    mt->level[level].level_y = y;
 254    mt->level[level].nr_images = nr_images;
 255
 256    DBG("%s level %d size: %d,%d,%d offset %d,%d\n", __FUNCTION__,
 257        level, w, h, d, x, y);
 258
 259    assert(nr_images);
 260    assert(!mt->level[level].x_offset);
 261
 262    mt->level[level].x_offset = malloc(nr_images * sizeof(GLuint));
 263    mt->level[level].x_offset[0] = mt->level[level].level_x;
 264    mt->level[level].y_offset = malloc(nr_images * sizeof(GLuint));
 265    mt->level[level].y_offset[0] = mt->level[level].level_y;
 266 }
 267
 268
 269 void
 270 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 271                                GLuint level, GLuint img,
 272                                GLuint x, GLuint y)
 273 {
 274    if (img == 0 && level == 0)
 275       assert(x == 0 && y == 0);
 276
 277    assert(img < mt->level[level].nr_images);
 278
 279    mt->level[level].x_offset[img] = mt->level[level].level_x + x;
 280    mt->level[level].y_offset[img] = mt->level[level].level_y + y;
 281
 282    DBG("%s level %d img %d pos %d,%d\n",
 283        __FUNCTION__, level, img,
 284        mt->level[level].x_offset[img], mt->level[level].y_offset[img]);
 285 }
 286
 287
 288 void
 289 intel_miptree_get_image_offset(struct intel_mipmap_tree *mt,
 290                                GLuint level, GLuint face, GLuint depth,
 291                                GLuint *x, GLuint *y)
 292 {
 293    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB) {
 294       *x = mt->level[level].x_offset[face];
 295       *y = mt->level[level].y_offset[face];
 296    } else if (mt->target == GL_TEXTURE_3D) {
 297       *x = mt->level[level].x_offset[depth];
 298       *y = mt->level[level].y_offset[depth];
 299    } else {
 300       *x = mt->level[level].x_offset[0];
 301       *y = mt->level[level].y_offset[0];
 302    }
 303 }
 304
 305 /**
 306  * Map a teximage in a mipmap tree.
 307  * \param row_stride  returns row stride in bytes
 308  * \param image_stride  returns image stride in bytes (for 3D textures).
 309  * \param image_offsets pointer to array of pixel offsets from the returned
 310  *        pointer to each depth image
 311  * \return address of mapping
 312  */
 313 GLubyte *
 314 intel_miptree_image_map(struct intel_context * intel,
 315                         struct intel_mipmap_tree * mt,
 316                         GLuint face,
 317                         GLuint level,
 318                         GLuint * row_stride, GLuint * image_offsets)
 319 {
 320    GLuint x, y;
 321
 322    if (row_stride)
 323       *row_stride = mt->region->pitch * mt->cpp;
 324
 325    if (mt->target == GL_TEXTURE_3D) {
 326       int i;
 327
 328       for (i = 0; i < mt->level[level].depth; i++) {
 329
 330          intel_miptree_get_image_offset(mt, level, face, i,
 331                                         &x, &y);
 332          image_offsets[i] = x + y * mt->region->pitch;
 333       }
 334
 335       DBG("%s \n", __FUNCTION__);
 336
 337       return intel_region_map(intel, mt->region);
 338    } else {
 339       assert(mt->level[level].depth == 1);
 340       intel_miptree_get_image_offset(mt, level, face, 0,
 341                                      &x, &y);
 342       image_offsets[0] = 0;
 343
 344       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 345           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 346
 347       return intel_region_map(intel, mt->region) +
 348          (x + y * mt->region->pitch) * mt->cpp;
 349    }
 350 }
 351
 352
 353 void
 354 intel_miptree_image_unmap(struct intel_context *intel,
 355                           struct intel_mipmap_tree *mt)
 356 {
 357    DBG("%s\n", __FUNCTION__);
 358    intel_region_unmap(intel, mt->region);
 359 }
 360
 361
 362 /**
 363  * Upload data for a particular image.
 364  */
 365 void
 366 intel_miptree_image_data(struct intel_context *intel,
 367                          struct intel_mipmap_tree *dst,
 368                          GLuint face,
 369                          GLuint level,
 370                          void *src,
 371                          GLuint src_row_pitch,
 372                          GLuint src_image_pitch)
 373 {
 374    const GLuint depth = dst->level[level].depth;
 375    GLuint i;
 376
 377    for (i = 0; i < depth; i++) {
 378       GLuint dst_x, dst_y, height, width;
 379
 380       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 381
 382       height = dst->level[level].height;
 383       width = dst->level[level].width;
 384       if (dst->compressed) {
 385          unsigned int align_w, align_h;
 386
 387          intel_get_texture_alignment_unit(dst->format, &align_w, &align_h);
 388          height = (height + align_h - 1) / align_h;
 389          width = ALIGN(width, align_w);
 390       }
 391
 392       DBG("%s: %d/%d %p/%d -> (%d, %d)/%d (%d, %d)\n",
 393           __FUNCTION__, face, level,
 394           src, src_row_pitch * dst->cpp,
 395           dst_x, dst_y, dst->region->pitch * dst->cpp,
 396           width, height);
 397
 398       intel_region_data(intel,
 399                         dst->region, 0, dst_x, dst_y,
 400                         src,
 401                         src_row_pitch,
 402                         0, 0,                             /* source x, y */
 403                         width, height);
 404
 405       src = (char *)src + src_image_pitch * dst->cpp;
 406    }
 407 }
 408
 409
 410 /**
 411  * Copy mipmap image between trees
 412  */
 413 void
 414 intel_miptree_image_copy(struct intel_context *intel,
 415                          struct intel_mipmap_tree *dst,
 416                          GLuint face, GLuint level,
 417                          struct intel_mipmap_tree *src)
 418 {
 419    GLuint width = src->level[level].width;
 420    GLuint height = src->level[level].height;
 421    GLuint depth = src->level[level].depth;
 422    GLuint src_x, src_y, dst_x, dst_y;
 423    GLuint i;
 424    GLboolean success;
 425
 426    if (dst->compressed) {
 427        GLuint align_w, align_h;
 428
 429        intel_get_texture_alignment_unit(dst->format, &align_w, &align_h);
 430        height = (height + 3) / 4;
 431        width = ALIGN(width, align_w);
 432    }
 433
 434    intel_prepare_render(intel);
 435
 436    for (i = 0; i < depth; i++) {
 437       intel_miptree_get_image_offset(src, level, face, i, &src_x, &src_y);
 438       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 439       success = intel_region_copy(intel,
 440                                   dst->region, 0, dst_x, dst_y,
 441                                   src->region, 0, src_x, src_y,
 442                                   width, height, GL_FALSE,
 443                                   GL_COPY);
 444       if (!success) {
 445          GLubyte *src_ptr, *dst_ptr;
 446
 447          src_ptr = intel_region_map(intel, src->region);
 448          dst_ptr = intel_region_map(intel, dst->region);
 449
 450          _mesa_copy_rect(dst_ptr,
 451                          dst->cpp,
 452                          dst->region->pitch,
 453                          dst_x, dst_y, width, height,
 454                          src_ptr,
 455                          src->region->pitch,
 456                          src_x, src_y);
 457          intel_region_unmap(intel, src->region);
 458          intel_region_unmap(intel, dst->region);
 459       }
 460    }
 461 }