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 "main/enums.h"
  33
  34 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  35
  36
  37 static GLenum
  38 target_to_target(GLenum target)
  39 {
  40    switch (target) {
  41    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  42    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  43    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  44    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  45    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  46    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  47       return GL_TEXTURE_CUBE_MAP_ARB;
  48    default:
  49       return target;
  50    }
  51 }
  52
  53
  54 static struct intel_mipmap_tree *
  55 intel_miptree_create_internal(struct intel_context *intel,
  56                               GLenum target,
  57                               GLenum internal_format,
  58                               GLuint first_level,
  59                               GLuint last_level,
  60                               GLuint width0,
  61                               GLuint height0,
  62                               GLuint depth0, GLuint cpp, GLuint compress_byte,
  63                               uint32_t tiling)
  64 {
  65    GLboolean ok;
  66    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  67
  68    DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
  69        _mesa_lookup_enum_by_nr(target),
  70        _mesa_lookup_enum_by_nr(internal_format),
  71        first_level, last_level, mt);
  72
  73    mt->target = target_to_target(target);
  74    mt->internal_format = internal_format;
  75    mt->first_level = first_level;
  76    mt->last_level = last_level;
  77    mt->width0 = width0;
  78    mt->height0 = height0;
  79    mt->depth0 = depth0;
  80    mt->cpp = compress_byte ? compress_byte : cpp;
  81    mt->compressed = compress_byte ? 1 : 0;
  82    mt->refcount = 1;
  83
  84 #ifdef I915
  85    if (intel->is_945)
  86       ok = i945_miptree_layout(intel, mt, tiling);
  87    else
  88       ok = i915_miptree_layout(intel, mt, tiling);
  89 #else
  90    ok = brw_miptree_layout(intel, mt, tiling);
  91 #endif
  92
  93    if (!ok) {
  94       free(mt);
  95       DBG("%s not okay - returning NULL\n", __FUNCTION__);
  96       return NULL;
  97    }
  98
  99    return mt;
 100 }
 101
 102
 103 struct intel_mipmap_tree *
 104 intel_miptree_create(struct intel_context *intel,
 105                      GLenum target,
 106                      GLenum base_format,
 107                      GLenum internal_format,
 108                      GLuint first_level,
 109                      GLuint last_level,
 110                      GLuint width0,
 111                      GLuint height0,
 112                      GLuint depth0, GLuint cpp, GLuint compress_byte,
 113                      GLboolean expect_accelerated_upload)
 114 {
 115    struct intel_mipmap_tree *mt;
 116    uint32_t tiling = I915_TILING_NONE;
 117
 118    if (intel->use_texture_tiling && compress_byte == 0) {
 119       if (intel->gen >= 4 &&
 120           (base_format == GL_DEPTH_COMPONENT ||
 121            base_format == GL_DEPTH_STENCIL_EXT))
 122          tiling = I915_TILING_Y;
 123       else if (width0 >= 64)
 124          tiling = I915_TILING_X;
 125    }
 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->total_height) {
 135       free(mt);
 136       return NULL;
 137    }
 138
 139    mt->region = intel_region_alloc(intel,
 140                                    tiling,
 141                                    mt->cpp,
 142                                    mt->total_width,
 143                                    mt->total_height,
 144                                    expect_accelerated_upload);
 145
 146    if (!mt->region) {
 147        free(mt);
 148        return NULL;
 149    }
 150
 151    return mt;
 152 }
 153
 154
 155 struct intel_mipmap_tree *
 156 intel_miptree_create_for_region(struct intel_context *intel,
 157                                 GLenum target,
 158                                 GLenum internal_format,
 159                                 GLuint first_level,
 160                                 GLuint last_level,
 161                                 struct intel_region *region,
 162                                 GLuint depth0,
 163                                 GLuint compress_byte)
 164 {
 165    struct intel_mipmap_tree *mt;
 166
 167    mt = intel_miptree_create_internal(intel, target, internal_format,
 168                                       first_level, last_level,
 169                                       region->width, region->height, 1,
 170                                       region->cpp, compress_byte,
 171                                       I915_TILING_NONE);
 172    if (!mt)
 173       return mt;
 174
 175    intel_region_reference(&mt->region, region);
 176
 177    return mt;
 178 }
 179
 180 void
 181 intel_miptree_reference(struct intel_mipmap_tree **dst,
 182                         struct intel_mipmap_tree *src)
 183 {
 184    src->refcount++;
 185    *dst = src;
 186    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 187 }
 188
 189
 190 void
 191 intel_miptree_release(struct intel_context *intel,
 192                       struct intel_mipmap_tree **mt)
 193 {
 194    if (!*mt)
 195       return;
 196
 197    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 198    if (--(*mt)->refcount <= 0) {
 199       GLuint i;
 200
 201       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 202
 203       intel_region_release(&((*mt)->region));
 204
 205       for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
 206          free((*mt)->level[i].x_offset);
 207          free((*mt)->level[i].y_offset);
 208       }
 209
 210       free(*mt);
 211    }
 212    *mt = NULL;
 213 }
 214
 215
 216 /**
 217  * Can the image be pulled into a unified mipmap tree?  This mirrors
 218  * the completeness test in a lot of ways.
 219  *
 220  * Not sure whether I want to pass gl_texture_image here.
 221  */
 222 GLboolean
 223 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 224                           struct gl_texture_image *image)
 225 {
 226    GLboolean isCompressed = _mesa_is_format_compressed(image->TexFormat);
 227    struct intel_texture_image *intelImage = intel_texture_image(image);
 228    GLuint level = intelImage->level;
 229
 230    /* Images with borders are never pulled into mipmap trees. */
 231    if (image->Border)
 232       return GL_FALSE;
 233
 234    if (image->InternalFormat != mt->internal_format ||
 235        isCompressed != mt->compressed)
 236       return GL_FALSE;
 237
 238    if (!isCompressed &&
 239        !mt->compressed &&
 240        _mesa_get_format_bytes(image->TexFormat) != mt->cpp)
 241       return GL_FALSE;
 242
 243    /* Test image dimensions against the base level image adjusted for
 244     * minification.  This will also catch images not present in the
 245     * tree, changed targets, etc.
 246     */
 247    if (image->Width != mt->level[level].width ||
 248        image->Height != mt->level[level].height ||
 249        image->Depth != mt->level[level].depth)
 250       return GL_FALSE;
 251
 252    return GL_TRUE;
 253 }
 254
 255
 256 void
 257 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 258                              GLuint level,
 259                              GLuint nr_images,
 260                              GLuint x, GLuint y,
 261                              GLuint w, GLuint h, GLuint d)
 262 {
 263    mt->level[level].width = w;
 264    mt->level[level].height = h;
 265    mt->level[level].depth = d;
 266    mt->level[level].level_x = x;
 267    mt->level[level].level_y = y;
 268    mt->level[level].nr_images = nr_images;
 269
 270    DBG("%s level %d size: %d,%d,%d offset %d,%d\n", __FUNCTION__,
 271        level, w, h, d, x, y);
 272
 273    assert(nr_images);
 274    assert(!mt->level[level].x_offset);
 275
 276    mt->level[level].x_offset = malloc(nr_images * sizeof(GLuint));
 277    mt->level[level].x_offset[0] = mt->level[level].level_x;
 278    mt->level[level].y_offset = malloc(nr_images * sizeof(GLuint));
 279    mt->level[level].y_offset[0] = mt->level[level].level_y;
 280 }
 281
 282
 283 void
 284 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 285                                GLuint level, GLuint img,
 286                                GLuint x, GLuint y)
 287 {
 288    if (img == 0 && level == 0)
 289       assert(x == 0 && y == 0);
 290
 291    assert(img < mt->level[level].nr_images);
 292
 293    mt->level[level].x_offset[img] = mt->level[level].level_x + x;
 294    mt->level[level].y_offset[img] = mt->level[level].level_y + y;
 295
 296    DBG("%s level %d img %d pos %d,%d\n",
 297        __FUNCTION__, level, img,
 298        mt->level[level].x_offset[img], mt->level[level].y_offset[img]);
 299 }
 300
 301
 302 void
 303 intel_miptree_get_image_offset(struct intel_mipmap_tree *mt,
 304                                GLuint level, GLuint face, GLuint depth,
 305                                GLuint *x, GLuint *y)
 306 {
 307    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB) {
 308       *x = mt->level[level].x_offset[face];
 309       *y = mt->level[level].y_offset[face];
 310    } else if (mt->target == GL_TEXTURE_3D) {
 311       *x = mt->level[level].x_offset[depth];
 312       *y = mt->level[level].y_offset[depth];
 313    } else {
 314       *x = mt->level[level].x_offset[0];
 315       *y = mt->level[level].y_offset[0];
 316    }
 317 }
 318
 319 /**
 320  * Map a teximage in a mipmap tree.
 321  * \param row_stride  returns row stride in bytes
 322  * \param image_stride  returns image stride in bytes (for 3D textures).
 323  * \param image_offsets pointer to array of pixel offsets from the returned
 324  *        pointer to each depth image
 325  * \return address of mapping
 326  */
 327 GLubyte *
 328 intel_miptree_image_map(struct intel_context * intel,
 329                         struct intel_mipmap_tree * mt,
 330                         GLuint face,
 331                         GLuint level,
 332                         GLuint * row_stride, GLuint * image_offsets)
 333 {
 334    GLuint x, y;
 335    DBG("%s \n", __FUNCTION__);
 336
 337    if (row_stride)
 338       *row_stride = mt->region->pitch * mt->cpp;
 339
 340    if (mt->target == GL_TEXTURE_3D) {
 341       int i;
 342
 343       for (i = 0; i < mt->level[level].depth; i++) {
 344
 345          intel_miptree_get_image_offset(mt, level, face, i,
 346                                         &x, &y);
 347          image_offsets[i] = x + y * mt->region->pitch;
 348       }
 349
 350       return intel_region_map(intel, mt->region);
 351    } else {
 352       assert(mt->level[level].depth == 1);
 353       intel_miptree_get_image_offset(mt, level, face, 0,
 354                                      &x, &y);
 355       image_offsets[0] = 0;
 356
 357       return intel_region_map(intel, mt->region) +
 358          (x + y * mt->region->pitch) * mt->cpp;
 359    }
 360 }
 361
 362
 363 void
 364 intel_miptree_image_unmap(struct intel_context *intel,
 365                           struct intel_mipmap_tree *mt)
 366 {
 367    DBG("%s\n", __FUNCTION__);
 368    intel_region_unmap(intel, mt->region);
 369 }
 370
 371
 372 /**
 373  * Upload data for a particular image.
 374  */
 375 void
 376 intel_miptree_image_data(struct intel_context *intel,
 377                          struct intel_mipmap_tree *dst,
 378                          GLuint face,
 379                          GLuint level,
 380                          void *src,
 381                          GLuint src_row_pitch,
 382                          GLuint src_image_pitch)
 383 {
 384    const GLuint depth = dst->level[level].depth;
 385    GLuint i;
 386
 387    DBG("%s: %d/%d\n", __FUNCTION__, face, level);
 388    for (i = 0; i < depth; i++) {
 389       GLuint dst_x, dst_y, height;
 390
 391       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 392
 393       height = dst->level[level].height;
 394       if(dst->compressed)
 395          height = (height + 3) / 4;
 396
 397       intel_region_data(intel,
 398                         dst->region, 0, dst_x, dst_y,
 399                         src,
 400                         src_row_pitch,
 401                         0, 0,                             /* source x, y */
 402                         dst->level[level].width, height); /* width, height */
 403
 404       src = (char *)src + src_image_pitch * dst->cpp;
 405    }
 406 }
 407
 408
 409 /**
 410  * Copy mipmap image between trees
 411  */
 412 void
 413 intel_miptree_image_copy(struct intel_context *intel,
 414                          struct intel_mipmap_tree *dst,
 415                          GLuint face, GLuint level,
 416                          struct intel_mipmap_tree *src)
 417 {
 418    GLuint width = src->level[level].width;
 419    GLuint height = src->level[level].height;
 420    GLuint depth = src->level[level].depth;
 421    GLuint src_x, src_y, dst_x, dst_y;
 422    GLuint i;
 423    GLboolean success;
 424
 425    if (dst->compressed) {
 426        GLuint align_w, align_h;
 427
 428        intel_get_texture_alignment_unit(dst->internal_format,
 429                                         &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 }