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 #include "main/formats.h"
  34
  35 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  36
  37
  38 static GLenum
  39 target_to_target(GLenum target)
  40 {
  41    switch (target) {
  42    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  43    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  44    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  45    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  46    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  47    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  48       return GL_TEXTURE_CUBE_MAP_ARB;
  49    default:
  50       return target;
  51    }
  52 }
  53
  54
  55 static struct intel_mipmap_tree *
  56 intel_miptree_create_internal(struct intel_context *intel,
  57                               GLenum target,
  58                               GLenum internal_format,
  59                               GLuint first_level,
  60                               GLuint last_level,
  61                               GLuint width0,
  62                               GLuint height0,
  63                               GLuint depth0, GLuint cpp, GLuint compress_byte,
  64                               uint32_t tiling)
  65 {
  66    GLboolean ok;
  67    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  68
  69    DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
  70        _mesa_lookup_enum_by_nr(target),
  71        _mesa_lookup_enum_by_nr(internal_format),
  72        first_level, last_level, mt);
  73
  74    mt->target = target_to_target(target);
  75    mt->internal_format = internal_format;
  76    mt->first_level = first_level;
  77    mt->last_level = last_level;
  78    mt->width0 = width0;
  79    mt->height0 = height0;
  80    mt->depth0 = depth0;
  81    mt->cpp = compress_byte ? compress_byte : cpp;
  82    mt->compressed = compress_byte ? 1 : 0;
  83    mt->refcount = 1;
  84
  85 #ifdef I915
  86    if (intel->is_945)
  87       ok = i945_miptree_layout(intel, mt, tiling);
  88    else
  89       ok = i915_miptree_layout(intel, mt, tiling);
  90 #else
  91    ok = brw_miptree_layout(intel, mt, tiling);
  92 #endif
  93
  94    if (!ok) {
  95       free(mt);
  96       DBG("%s not okay - returning NULL\n", __FUNCTION__);
  97       return NULL;
  98    }
  99
 100    return mt;
 101 }
 102
 103
 104 struct intel_mipmap_tree *
 105 intel_miptree_create(struct intel_context *intel,
 106                      GLenum target,
 107                      GLenum base_format,
 108                      GLenum internal_format,
 109                      GLuint first_level,
 110                      GLuint last_level,
 111                      GLuint width0,
 112                      GLuint height0,
 113                      GLuint depth0, GLuint cpp, GLuint compress_byte,
 114                      GLboolean expect_accelerated_upload)
 115 {
 116    struct intel_mipmap_tree *mt;
 117    uint32_t tiling = I915_TILING_NONE;
 118
 119    if (intel->use_texture_tiling && compress_byte == 0) {
 120       if (intel->gen >= 4 &&
 121           (base_format == GL_DEPTH_COMPONENT ||
 122            base_format == GL_DEPTH_STENCIL_EXT))
 123          tiling = I915_TILING_Y;
 124       else if (width0 >= 64)
 125          tiling = I915_TILING_X;
 126    }
 127
 128    mt = intel_miptree_create_internal(intel, target, internal_format,
 129                                       first_level, last_level, width0,
 130                                       height0, depth0, cpp, compress_byte,
 131                                       tiling);
 132    /*
 133     * pitch == 0 || height == 0  indicates the null texture
 134     */
 135    if (!mt || !mt->total_height) {
 136       free(mt);
 137       return NULL;
 138    }
 139
 140    mt->region = intel_region_alloc(intel->intelScreen,
 141                                    tiling,
 142                                    mt->cpp,
 143                                    mt->total_width,
 144                                    mt->total_height,
 145                                    expect_accelerated_upload);
 146
 147    if (!mt->region) {
 148        free(mt);
 149        return NULL;
 150    }
 151
 152    return mt;
 153 }
 154
 155
 156 struct intel_mipmap_tree *
 157 intel_miptree_create_for_region(struct intel_context *intel,
 158                                 GLenum target,
 159                                 GLenum internal_format,
 160                                 struct intel_region *region,
 161                                 GLuint depth0,
 162                                 GLuint compress_byte)
 163 {
 164    struct intel_mipmap_tree *mt;
 165
 166    mt = intel_miptree_create_internal(intel, target, internal_format,
 167                                       0, 0,
 168                                       region->width, region->height, 1,
 169                                       region->cpp, compress_byte,
 170                                       I915_TILING_NONE);
 171    if (!mt)
 172       return mt;
 173
 174    intel_region_reference(&mt->region, region);
 175
 176    return mt;
 177 }
 178
 179 void
 180 intel_miptree_reference(struct intel_mipmap_tree **dst,
 181                         struct intel_mipmap_tree *src)
 182 {
 183    src->refcount++;
 184    *dst = src;
 185    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 186 }
 187
 188
 189 void
 190 intel_miptree_release(struct intel_context *intel,
 191                       struct intel_mipmap_tree **mt)
 192 {
 193    if (!*mt)
 194       return;
 195
 196    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 197    if (--(*mt)->refcount <= 0) {
 198       GLuint i;
 199
 200       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 201
 202       intel_region_release(&((*mt)->region));
 203
 204       for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
 205          free((*mt)->level[i].x_offset);
 206          free((*mt)->level[i].y_offset);
 207       }
 208
 209       free(*mt);
 210    }
 211    *mt = NULL;
 212 }
 213
 214
 215 /**
 216  * Can the image be pulled into a unified mipmap tree?  This mirrors
 217  * the completeness test in a lot of ways.
 218  *
 219  * Not sure whether I want to pass gl_texture_image here.
 220  */
 221 GLboolean
 222 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 223                           struct gl_texture_image *image)
 224 {
 225    GLboolean isCompressed = _mesa_is_format_compressed(image->TexFormat);
 226    struct intel_texture_image *intelImage = intel_texture_image(image);
 227    GLuint level = intelImage->level;
 228
 229    /* Images with borders are never pulled into mipmap trees. */
 230    if (image->Border)
 231       return GL_FALSE;
 232
 233    if (image->InternalFormat != mt->internal_format ||
 234        isCompressed != mt->compressed)
 235       return GL_FALSE;
 236
 237    if (!isCompressed &&
 238        !mt->compressed &&
 239        _mesa_get_format_bytes(image->TexFormat) != mt->cpp)
 240       return GL_FALSE;
 241
 242    /* Test image dimensions against the base level image adjusted for
 243     * minification.  This will also catch images not present in the
 244     * tree, changed targets, etc.
 245     */
 246    if (image->Width != mt->level[level].width ||
 247        image->Height != mt->level[level].height ||
 248        image->Depth != mt->level[level].depth)
 249       return GL_FALSE;
 250
 251    return GL_TRUE;
 252 }
 253
 254
 255 void
 256 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 257                              GLuint level,
 258                              GLuint nr_images,
 259                              GLuint x, GLuint y,
 260                              GLuint w, GLuint h, GLuint d)
 261 {
 262    mt->level[level].width = w;
 263    mt->level[level].height = h;
 264    mt->level[level].depth = d;
 265    mt->level[level].level_x = x;
 266    mt->level[level].level_y = y;
 267    mt->level[level].nr_images = nr_images;
 268
 269    DBG("%s level %d size: %d,%d,%d offset %d,%d\n", __FUNCTION__,
 270        level, w, h, d, x, y);
 271
 272    assert(nr_images);
 273    assert(!mt->level[level].x_offset);
 274
 275    mt->level[level].x_offset = malloc(nr_images * sizeof(GLuint));
 276    mt->level[level].x_offset[0] = mt->level[level].level_x;
 277    mt->level[level].y_offset = malloc(nr_images * sizeof(GLuint));
 278    mt->level[level].y_offset[0] = mt->level[level].level_y;
 279 }
 280
 281
 282 void
 283 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 284                                GLuint level, GLuint img,
 285                                GLuint x, GLuint y)
 286 {
 287    if (img == 0 && level == 0)
 288       assert(x == 0 && y == 0);
 289
 290    assert(img < mt->level[level].nr_images);
 291
 292    mt->level[level].x_offset[img] = mt->level[level].level_x + x;
 293    mt->level[level].y_offset[img] = mt->level[level].level_y + y;
 294
 295    DBG("%s level %d img %d pos %d,%d\n",
 296        __FUNCTION__, level, img,
 297        mt->level[level].x_offset[img], mt->level[level].y_offset[img]);
 298 }
 299
 300
 301 void
 302 intel_miptree_get_image_offset(struct intel_mipmap_tree *mt,
 303                                GLuint level, GLuint face, GLuint depth,
 304                                GLuint *x, GLuint *y)
 305 {
 306    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB) {
 307       *x = mt->level[level].x_offset[face];
 308       *y = mt->level[level].y_offset[face];
 309    } else if (mt->target == GL_TEXTURE_3D) {
 310       *x = mt->level[level].x_offset[depth];
 311       *y = mt->level[level].y_offset[depth];
 312    } else {
 313       *x = mt->level[level].x_offset[0];
 314       *y = mt->level[level].y_offset[0];
 315    }
 316 }
 317
 318 /**
 319  * Map a teximage in a mipmap tree.
 320  * \param row_stride  returns row stride in bytes
 321  * \param image_stride  returns image stride in bytes (for 3D textures).
 322  * \param image_offsets pointer to array of pixel offsets from the returned
 323  *        pointer to each depth image
 324  * \return address of mapping
 325  */
 326 GLubyte *
 327 intel_miptree_image_map(struct intel_context * intel,
 328                         struct intel_mipmap_tree * mt,
 329                         GLuint face,
 330                         GLuint level,
 331                         GLuint * row_stride, GLuint * image_offsets)
 332 {
 333    GLuint x, y;
 334
 335    if (row_stride)
 336       *row_stride = mt->region->pitch * mt->cpp;
 337
 338    if (mt->target == GL_TEXTURE_3D) {
 339       int i;
 340
 341       for (i = 0; i < mt->level[level].depth; i++) {
 342
 343          intel_miptree_get_image_offset(mt, level, face, i,
 344                                         &x, &y);
 345          image_offsets[i] = x + y * mt->region->pitch;
 346       }
 347
 348       DBG("%s \n", __FUNCTION__);
 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       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 358           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 359
 360       return intel_region_map(intel, mt->region) +
 361          (x + y * mt->region->pitch) * mt->cpp;
 362    }
 363 }
 364
 365
 366 void
 367 intel_miptree_image_unmap(struct intel_context *intel,
 368                           struct intel_mipmap_tree *mt)
 369 {
 370    DBG("%s\n", __FUNCTION__);
 371    intel_region_unmap(intel, mt->region);
 372 }
 373
 374
 375 /**
 376  * Upload data for a particular image.
 377  */
 378 void
 379 intel_miptree_image_data(struct intel_context *intel,
 380                          struct intel_mipmap_tree *dst,
 381                          GLuint face,
 382                          GLuint level,
 383                          void *src,
 384                          GLuint src_row_pitch,
 385                          GLuint src_image_pitch)
 386 {
 387    const GLuint depth = dst->level[level].depth;
 388    GLuint i;
 389
 390    for (i = 0; i < depth; i++) {
 391       GLuint dst_x, dst_y, height;
 392
 393       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 394
 395       height = dst->level[level].height;
 396       if(dst->compressed)
 397          height = (height + 3) / 4;
 398
 399       DBG("%s: %d/%d %p/%d -> (%d, %d)/%d (%d, %d)\n",
 400           __FUNCTION__, face, level,
 401           src, src_row_pitch * dst->cpp,
 402           dst_x, dst_y, dst->region->pitch * dst->cpp,
 403           dst->level[level].width, height);
 404
 405       intel_region_data(intel,
 406                         dst->region, 0, dst_x, dst_y,
 407                         src,
 408                         src_row_pitch,
 409                         0, 0,                             /* source x, y */
 410                         dst->level[level].width, height); /* width, height */
 411
 412       src = (char *)src + src_image_pitch * dst->cpp;
 413    }
 414 }
 415
 416
 417 /**
 418  * Copy mipmap image between trees
 419  */
 420 void
 421 intel_miptree_image_copy(struct intel_context *intel,
 422                          struct intel_mipmap_tree *dst,
 423                          GLuint face, GLuint level,
 424                          struct intel_mipmap_tree *src)
 425 {
 426    GLuint width = src->level[level].width;
 427    GLuint height = src->level[level].height;
 428    GLuint depth = src->level[level].depth;
 429    GLuint src_x, src_y, dst_x, dst_y;
 430    GLuint i;
 431    GLboolean success;
 432
 433    if (dst->compressed) {
 434        GLuint align_w, align_h;
 435
 436        intel_get_texture_alignment_unit(dst->internal_format,
 437                                         &align_w, &align_h);
 438        height = (height + 3) / 4;
 439        width = ALIGN(width, align_w);
 440    }
 441
 442    intel_prepare_render(intel);
 443
 444    for (i = 0; i < depth; i++) {
 445       intel_miptree_get_image_offset(src, level, face, i, &src_x, &src_y);
 446       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 447       success = intel_region_copy(intel,
 448                                   dst->region, 0, dst_x, dst_y,
 449                                   src->region, 0, src_x, src_y,
 450                                   width, height, GL_FALSE,
 451                                   GL_COPY);
 452       if (!success) {
 453          GLubyte *src_ptr, *dst_ptr;
 454
 455          src_ptr = intel_region_map(intel, src->region);
 456          dst_ptr = intel_region_map(intel, dst->region);
 457
 458          _mesa_copy_rect(dst_ptr,
 459                          dst->cpp,
 460                          dst->region->pitch,
 461                          dst_x, dst_y, width, height,
 462                          src_ptr,
 463                          src->region->pitch,
 464                          src_x, src_y);
 465          intel_region_unmap(intel, src->region);
 466          intel_region_unmap(intel, dst->region);
 467       }
 468    }
 469 }