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 levels,
  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 levels %d <-- %p\n", __FUNCTION__,
  69        _mesa_lookup_enum_by_nr(target),
  70        _mesa_lookup_enum_by_nr(internal_format),
  71        levels, mt);
  72
  73    mt->target = target_to_target(target);
  74    mt->internal_format = internal_format;
  75    mt->levels = levels;
  76    mt->width0 = width0;
  77    mt->height0 = height0;
  78    mt->depth0 = depth0;
  79    mt->cpp = compress_byte ? compress_byte : cpp;
  80    mt->compressed = compress_byte ? 1 : 0;
  81    mt->refcount = 1;
  82
  83 #ifdef I915
  84    if (intel->is_945)
  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
 102 struct intel_mipmap_tree *
 103 intel_miptree_create(struct intel_context *intel,
 104                      GLenum target,
 105                      GLenum base_format,
 106                      GLenum internal_format,
 107                      GLuint levels,
 108                      GLuint width0,
 109                      GLuint height0,
 110                      GLuint depth0, GLuint cpp, GLuint compress_byte,
 111                      GLboolean expect_accelerated_upload)
 112 {
 113    struct intel_mipmap_tree *mt;
 114    uint32_t tiling = I915_TILING_NONE;
 115
 116    if (intel->use_texture_tiling && compress_byte == 0) {
 117       if (intel->gen >= 4 &&
 118           (base_format == GL_DEPTH_COMPONENT ||
 119            base_format == GL_DEPTH_STENCIL_EXT))
 120          tiling = I915_TILING_Y;
 121       else if (width0 >= 64)
 122          tiling = I915_TILING_X;
 123    }
 124
 125    mt = intel_miptree_create_internal(intel, target, internal_format,
 126                                       levels, width0,
 127                                       height0, depth0, cpp, compress_byte,
 128                                       tiling);
 129    /*
 130     * pitch == 0 || height == 0  indicates the null texture
 131     */
 132    if (!mt || !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                                 GLenum internal_format,
 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                                       1,
 165                                       region->width, region->height, 1,
 166                                       region->cpp, compress_byte,
 167                                       I915_TILING_NONE);
 168    if (!mt)
 169       return mt;
 170
 171    intel_region_reference(&mt->region, region);
 172
 173    return mt;
 174 }
 175
 176 void
 177 intel_miptree_reference(struct intel_mipmap_tree **dst,
 178                         struct intel_mipmap_tree *src)
 179 {
 180    src->refcount++;
 181    *dst = src;
 182    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 183 }
 184
 185
 186 void
 187 intel_miptree_release(struct intel_context *intel,
 188                       struct intel_mipmap_tree **mt)
 189 {
 190    if (!*mt)
 191       return;
 192
 193    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 194    if (--(*mt)->refcount <= 0) {
 195       GLuint i;
 196
 197       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 198
 199       intel_region_release(&((*mt)->region));
 200
 201       for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
 202          free((*mt)->level[i].x_offset);
 203          free((*mt)->level[i].y_offset);
 204       }
 205
 206       free(*mt);
 207    }
 208    *mt = NULL;
 209 }
 210
 211
 212 /**
 213  * Can the image be pulled into a unified mipmap tree?  This mirrors
 214  * the completeness test in a lot of ways.
 215  *
 216  * Not sure whether I want to pass gl_texture_image here.
 217  */
 218 GLboolean
 219 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 220                           struct gl_texture_image *image)
 221 {
 222    GLboolean isCompressed = _mesa_is_format_compressed(image->TexFormat);
 223    struct intel_texture_image *intelImage = intel_texture_image(image);
 224    GLuint level = intelImage->level;
 225
 226    /* Images with borders are never pulled into mipmap trees. */
 227    if (image->Border)
 228       return GL_FALSE;
 229
 230    if (image->InternalFormat != mt->internal_format ||
 231        isCompressed != mt->compressed)
 232       return GL_FALSE;
 233
 234    if (!isCompressed &&
 235        !mt->compressed &&
 236        _mesa_get_format_bytes(image->TexFormat) != mt->cpp)
 237       return GL_FALSE;
 238
 239    /* Test image dimensions against the base level image adjusted for
 240     * minification.  This will also catch images not present in the
 241     * tree, changed targets, etc.
 242     */
 243    if (image->Width != mt->level[level].width ||
 244        image->Height != mt->level[level].height ||
 245        image->Depth != mt->level[level].depth)
 246       return GL_FALSE;
 247
 248    return GL_TRUE;
 249 }
 250
 251
 252 void
 253 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 254                              GLuint level,
 255                              GLuint nr_images,
 256                              GLuint x, GLuint y,
 257                              GLuint w, GLuint h, GLuint d)
 258 {
 259    mt->level[level].width = w;
 260    mt->level[level].height = h;
 261    mt->level[level].depth = d;
 262    mt->level[level].level_x = x;
 263    mt->level[level].level_y = y;
 264    mt->level[level].nr_images = nr_images;
 265
 266    DBG("%s level %d size: %d,%d,%d offset %d,%d\n", __FUNCTION__,
 267        level, w, h, d, x, y);
 268
 269    assert(nr_images);
 270    assert(!mt->level[level].x_offset);
 271
 272    mt->level[level].x_offset = malloc(nr_images * sizeof(GLuint));
 273    mt->level[level].x_offset[0] = mt->level[level].level_x;
 274    mt->level[level].y_offset = malloc(nr_images * sizeof(GLuint));
 275    mt->level[level].y_offset[0] = mt->level[level].level_y;
 276 }
 277
 278
 279 void
 280 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 281                                GLuint level, GLuint img,
 282                                GLuint x, GLuint y)
 283 {
 284    if (img == 0 && level == 0)
 285       assert(x == 0 && y == 0);
 286
 287    assert(img < mt->level[level].nr_images);
 288
 289    mt->level[level].x_offset[img] = mt->level[level].level_x + x;
 290    mt->level[level].y_offset[img] = mt->level[level].level_y + y;
 291
 292    DBG("%s level %d img %d pos %d,%d\n",
 293        __FUNCTION__, level, img,
 294        mt->level[level].x_offset[img], mt->level[level].y_offset[img]);
 295 }
 296
 297
 298 void
 299 intel_miptree_get_image_offset(struct intel_mipmap_tree *mt,
 300                                GLuint level, GLuint face, GLuint depth,
 301                                GLuint *x, GLuint *y)
 302 {
 303    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB) {
 304       *x = mt->level[level].x_offset[face];
 305       *y = mt->level[level].y_offset[face];
 306    } else if (mt->target == GL_TEXTURE_3D) {
 307       *x = mt->level[level].x_offset[depth];
 308       *y = mt->level[level].y_offset[depth];
 309    } else {
 310       *x = mt->level[level].x_offset[0];
 311       *y = mt->level[level].y_offset[0];
 312    }
 313 }
 314
 315 /**
 316  * Map a teximage in a mipmap tree.
 317  * \param row_stride  returns row stride in bytes
 318  * \param image_stride  returns image stride in bytes (for 3D textures).
 319  * \param image_offsets pointer to array of pixel offsets from the returned
 320  *        pointer to each depth image
 321  * \return address of mapping
 322  */
 323 GLubyte *
 324 intel_miptree_image_map(struct intel_context * intel,
 325                         struct intel_mipmap_tree * mt,
 326                         GLuint face,
 327                         GLuint level,
 328                         GLuint * row_stride, GLuint * image_offsets)
 329 {
 330    GLuint x, y;
 331
 332    if (row_stride)
 333       *row_stride = mt->region->pitch * mt->cpp;
 334
 335    if (mt->target == GL_TEXTURE_3D) {
 336       int i;
 337
 338       for (i = 0; i < mt->level[level].depth; i++) {
 339
 340          intel_miptree_get_image_offset(mt, level, face, i,
 341                                         &x, &y);
 342          image_offsets[i] = x + y * mt->region->pitch;
 343       }
 344
 345       DBG("%s \n", __FUNCTION__);
 346
 347       return intel_region_map(intel, mt->region);
 348    } else {
 349       assert(mt->level[level].depth == 1);
 350       intel_miptree_get_image_offset(mt, level, face, 0,
 351                                      &x, &y);
 352       image_offsets[0] = 0;
 353
 354       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 355           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 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    for (i = 0; i < depth; i++) {
 388       GLuint dst_x, dst_y, height;
 389
 390       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 391
 392       height = dst->level[level].height;
 393       if(dst->compressed)
 394          height = (height + 3) / 4;
 395
 396       DBG("%s: %d/%d %p/%d -> (%d, %d)/%d (%d, %d)\n",
 397           __FUNCTION__, face, level,
 398           src, src_row_pitch * dst->cpp,
 399           dst_x, dst_y, dst->region->pitch * dst->cpp,
 400           dst->level[level].width, height);
 401
 402       intel_region_data(intel,
 403                         dst->region, 0, dst_x, dst_y,
 404                         src,
 405                         src_row_pitch,
 406                         0, 0,                             /* source x, y */
 407                         dst->level[level].width, height); /* width, height */
 408
 409       src = (char *)src + src_image_pitch * dst->cpp;
 410    }
 411 }
 412
 413
 414 /**
 415  * Copy mipmap image between trees
 416  */
 417 void
 418 intel_miptree_image_copy(struct intel_context *intel,
 419                          struct intel_mipmap_tree *dst,
 420                          GLuint face, GLuint level,
 421                          struct intel_mipmap_tree *src)
 422 {
 423    GLuint width = src->level[level].width;
 424    GLuint height = src->level[level].height;
 425    GLuint depth = src->level[level].depth;
 426    GLuint src_x, src_y, dst_x, dst_y;
 427    GLuint i;
 428    GLboolean success;
 429
 430    if (dst->compressed) {
 431        GLuint align_w, align_h;
 432
 433        intel_get_texture_alignment_unit(dst->internal_format,
 434                                         &align_w, &align_h);
 435        height = (height + 3) / 4;
 436        width = ALIGN(width, align_w);
 437    }
 438
 439    intel_prepare_render(intel);
 440
 441    for (i = 0; i < depth; i++) {
 442       intel_miptree_get_image_offset(src, level, face, i, &src_x, &src_y);
 443       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 444       success = intel_region_copy(intel,
 445                                   dst->region, 0, dst_x, dst_y,
 446                                   src->region, 0, src_x, src_y,
 447                                   width, height, GL_FALSE,
 448                                   GL_COPY);
 449       if (!success) {
 450          GLubyte *src_ptr, *dst_ptr;
 451
 452          src_ptr = intel_region_map(intel, src->region);
 453          dst_ptr = intel_region_map(intel, dst->region);
 454
 455          _mesa_copy_rect(dst_ptr,
 456                          dst->cpp,
 457                          dst->region->pitch,
 458                          dst_x, dst_y, width, height,
 459                          src_ptr,
 460                          src->region->pitch,
 461                          src_x, src_y);
 462          intel_region_unmap(intel, src->region);
 463          intel_region_unmap(intel, dst->region);
 464       }
 465    }
 466 }