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