src/cairo-xcb-surface-core.c

   1 /* cairo - a vector graphics library with display and print output
   2  *
   3  * Copyright © 2009 Intel Corporation
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it either under the terms of the GNU Lesser General Public
   7  * License version 2.1 as published by the Free Software Foundation
   8  * (the "LGPL") or, at your option, under the terms of the Mozilla
   9  * Public License Version 1.1 (the "MPL"). If you do not alter this
  10  * notice, a recipient may use your version of this file under either
  11  * the MPL or the LGPL.
  12  *
  13  * You should have received a copy of the LGPL along with this library
  14  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  16  * You should have received a copy of the MPL along with this library
  17  * in the file COPYING-MPL-1.1
  18  *
  19  * The contents of this file are subject to the Mozilla Public License
  20  * Version 1.1 (the "License"); you may not use this file except in
  21  * compliance with the License. You may obtain a copy of the License at
  22  * http://www.mozilla.org/MPL/
  23  *
  24  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  25  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  26  * the specific language governing rights and limitations.
  27  *
  28  * Contributor(s):
  29  *      Chris Wilson <chris@chris-wilson.co.uk>
  30  */
  31
  32 #include "cairoint.h"
  33
  34 #include "cairo-boxes-private.h"
  35 #include "cairo-xcb-private.h"
  36 #include "cairo-image-surface-private.h"
  37 #include "cairo-surface-backend-private.h"
  38
  39 /* XXX dithering */
  40
  41 typedef struct _cairo_xcb_pixmap {
  42     cairo_surface_t base;
  43
  44     cairo_xcb_connection_t *connection;
  45     cairo_xcb_screen_t *screen;
  46
  47     cairo_surface_t *owner;
  48     xcb_pixmap_t pixmap;
  49     int width;
  50     int height;
  51     int depth;
  52     int x0, y0;
  53     cairo_bool_t repeat;
  54 } cairo_xcb_pixmap_t;
  55
  56 static cairo_status_t
  57 _cairo_xcb_pixmap_finish (void *abstract_surface)
  58 {
  59     cairo_xcb_pixmap_t *surface = abstract_surface;
  60     cairo_status_t status;
  61
  62     if (surface->owner != NULL) {
  63         cairo_surface_destroy (surface->owner);
  64     } else {
  65         status = _cairo_xcb_connection_acquire (surface->connection);
  66         if (unlikely (status))
  67             return status;
  68
  69         _cairo_xcb_connection_free_pixmap (surface->connection,
  70                                            surface->pixmap);
  71         _cairo_xcb_connection_release (surface->connection);
  72     }
  73
  74     return CAIRO_STATUS_SUCCESS;
  75 }
  76
  77 static const cairo_surface_backend_t _cairo_xcb_pixmap_backend = {
  78     CAIRO_SURFACE_TYPE_XCB,
  79     _cairo_xcb_pixmap_finish,
  80 };
  81
  82 static cairo_xcb_pixmap_t *
  83 _cairo_xcb_pixmap_create (cairo_xcb_surface_t *target,
  84                           int width, int height)
  85 {
  86     cairo_xcb_pixmap_t *surface;
  87
  88     surface = malloc (sizeof (cairo_xcb_pixmap_t));
  89     if (unlikely (surface == NULL))
  90         return (cairo_xcb_pixmap_t *)
  91             _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
  92
  93     _cairo_surface_init (&surface->base,
  94                          &_cairo_xcb_pixmap_backend,
  95                          NULL,
  96                          target->base.content);
  97
  98     surface->connection = target->connection;
  99     surface->screen = target->screen;
 100     surface->owner = NULL;
 101     surface->width = width;
 102     surface->height = height;
 103     surface->depth = target->depth;
 104     surface->x0 = surface->y0 = 0;
 105     surface->repeat = FALSE;
 106
 107     surface->pixmap =
 108         _cairo_xcb_connection_create_pixmap (surface->connection,
 109                                              surface->depth,
 110                                              target->drawable,
 111                                              width, height);
 112
 113     return surface;
 114 }
 115
 116 static cairo_xcb_pixmap_t *
 117 _cairo_xcb_pixmap_copy (cairo_xcb_surface_t *target)
 118 {
 119     cairo_xcb_pixmap_t *surface;
 120
 121     surface = malloc (sizeof (cairo_xcb_pixmap_t));
 122     if (unlikely (surface == NULL))
 123         return (cairo_xcb_pixmap_t *)
 124             _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
 125
 126     _cairo_surface_init (&surface->base,
 127                          &_cairo_xcb_pixmap_backend,
 128                          NULL,
 129                          target->base.content);
 130
 131     surface->connection = target->connection;
 132     surface->screen = target->screen;
 133     surface->pixmap = target->drawable;
 134     surface->owner = cairo_surface_reference (&target->base);
 135     surface->width = target->width;
 136     surface->height = target->height;
 137     surface->depth = target->depth;
 138     surface->x0 = surface->y0 = 0;
 139     surface->repeat = FALSE;
 140
 141     return surface;
 142 }
 143
 144 #if CAIRO_HAS_XCB_SHM_FUNCTIONS
 145 static cairo_status_t
 146 _cairo_xcb_shm_image_create_shm (cairo_xcb_connection_t *connection,
 147                                  pixman_format_code_t pixman_format,
 148                                  int width, int height,
 149                                  cairo_image_surface_t **image_out,
 150                                  cairo_xcb_shm_info_t **shm_info_out)
 151 {
 152     cairo_surface_t *image = NULL;
 153     cairo_xcb_shm_info_t *shm_info = NULL;
 154     cairo_status_t status;
 155     size_t size, stride;
 156
 157     if (! (connection->flags & CAIRO_XCB_HAS_SHM))
 158         return CAIRO_INT_STATUS_UNSUPPORTED;
 159
 160     if (unlikely (width > XLIB_COORD_MAX || height > XLIB_COORD_MAX))
 161         return CAIRO_INT_STATUS_UNSUPPORTED;
 162
 163     stride = CAIRO_STRIDE_FOR_WIDTH_BPP (width, PIXMAN_FORMAT_BPP (pixman_format));
 164     size = stride * height;
 165     if (size <= CAIRO_XCB_SHM_SMALL_IMAGE)
 166         return CAIRO_INT_STATUS_UNSUPPORTED;
 167
 168     status = _cairo_xcb_connection_allocate_shm_info (connection, size,
 169                                                       FALSE, &shm_info);
 170     if (unlikely (status))
 171         return status;
 172
 173     image = _cairo_image_surface_create_with_pixman_format (shm_info->mem,
 174                                                             pixman_format,
 175                                                             width, height,
 176                                                             stride);
 177     status = image->status;
 178     if (unlikely (status)) {
 179         _cairo_xcb_shm_info_destroy (shm_info);
 180         return status;
 181     }
 182
 183     status = _cairo_user_data_array_set_data (&image->user_data,
 184                                               (const cairo_user_data_key_t *) connection,
 185                                               shm_info,
 186                                               (cairo_destroy_func_t) _cairo_xcb_shm_info_destroy);
 187
 188     if (unlikely (status)) {
 189         cairo_surface_destroy (image);
 190         _cairo_xcb_shm_info_destroy (shm_info);
 191         return status;
 192     }
 193
 194     *image_out = (cairo_image_surface_t *) image;
 195     *shm_info_out = shm_info;
 196     return CAIRO_STATUS_SUCCESS;
 197 }
 198 #else
 199 static cairo_status_t
 200 _cairo_xcb_shm_image_create_shm (cairo_xcb_connection_t *connection,
 201                                  pixman_format_code_t pixman_format,
 202                                  int width, int height,
 203                                  cairo_image_surface_t **image_out,
 204                                  cairo_xcb_shm_info_t **shm_info_out)
 205 {
 206     return CAIRO_INT_STATUS_UNSUPPORTED;
 207 }
 208 #endif
 209
 210 cairo_status_t
 211 _cairo_xcb_shm_image_create (cairo_xcb_connection_t *connection,
 212                              pixman_format_code_t pixman_format,
 213                              int width, int height,
 214                              cairo_image_surface_t **image_out,
 215                              cairo_xcb_shm_info_t **shm_info_out)
 216 {
 217     cairo_surface_t *image = NULL;
 218     cairo_xcb_shm_info_t *shm_info = NULL;
 219     cairo_status_t status;
 220
 221     status = _cairo_xcb_shm_image_create_shm (connection,
 222                                               pixman_format,
 223                                               width,
 224                                               height,
 225                                               image_out,
 226                                               shm_info_out);
 227
 228     if (status != CAIRO_STATUS_SUCCESS) {
 229         image = _cairo_image_surface_create_with_pixman_format (NULL,
 230                                                                 pixman_format,
 231                                                                 width, height,
 232                                                                 0);
 233         status = image->status;
 234         if (unlikely (status))
 235             return status;
 236
 237         *image_out = (cairo_image_surface_t *) image;
 238         *shm_info_out = shm_info;
 239     }
 240
 241     return CAIRO_STATUS_SUCCESS;
 242 }
 243
 244 static cairo_xcb_pixmap_t *
 245 _pixmap_from_image (cairo_xcb_surface_t *target,
 246                     xcb_render_pictformat_t format,
 247                     cairo_image_surface_t *image,
 248                     cairo_xcb_shm_info_t *shm_info)
 249 {
 250     xcb_gcontext_t gc;
 251     cairo_xcb_pixmap_t *pixmap;
 252
 253     pixmap = _cairo_xcb_pixmap_create (target,
 254                                        image->width,
 255                                        image->height);
 256     if (unlikely (pixmap->base.status))
 257         return pixmap;
 258
 259     gc = _cairo_xcb_screen_get_gc (target->screen, pixmap->pixmap, image->depth);
 260
 261     if (shm_info != NULL) {
 262         _cairo_xcb_connection_shm_put_image (target->connection,
 263                                              pixmap->pixmap, gc,
 264                                              image->width, image->height,
 265                                              0, 0,
 266                                              image->width, image->height,
 267                                              0, 0,
 268                                              image->depth,
 269                                              shm_info->shm,
 270                                              shm_info->offset);
 271     } else {
 272         int len;
 273
 274         /* Do we need to trim the image? */
 275         len = CAIRO_STRIDE_FOR_WIDTH_BPP (image->width,
 276                                           PIXMAN_FORMAT_BPP (image->pixman_format));
 277         if (len == image->stride) {
 278             _cairo_xcb_connection_put_image (target->connection,
 279                                              pixmap->pixmap, gc,
 280                                              image->width, image->height,
 281                                              0, 0,
 282                                              image->depth,
 283                                              image->stride,
 284                                              image->data);
 285         } else {
 286             _cairo_xcb_connection_put_subimage (target->connection,
 287                                                 pixmap->pixmap, gc,
 288                                                 0, 0,
 289                                                 image->width, image->height,
 290                                                 PIXMAN_FORMAT_BPP (image->pixman_format) / 8,
 291                                                 image->stride,
 292                                                 0, 0,
 293                                                 image->depth,
 294                                                 image->data);
 295
 296         }
 297     }
 298
 299     _cairo_xcb_screen_put_gc (target->screen, image->depth, gc);
 300
 301     return pixmap;
 302 }
 303
 304 static cairo_xcb_pixmap_t *
 305 _render_to_pixmap (cairo_xcb_surface_t *target,
 306                    const cairo_pattern_t *pattern,
 307                    const cairo_rectangle_int_t *extents)
 308 {
 309     cairo_image_surface_t *image;
 310     cairo_xcb_shm_info_t *shm_info;
 311     cairo_pattern_union_t copy;
 312     cairo_status_t status;
 313     cairo_xcb_pixmap_t *pixmap;
 314
 315     status = _cairo_xcb_shm_image_create (target->screen->connection,
 316                                           target->pixman_format,
 317                                           extents->width, extents->height,
 318                                           &image, &shm_info);
 319     if (unlikely (status))
 320         return (cairo_xcb_pixmap_t *) _cairo_surface_create_in_error (status);
 321
 322     _cairo_pattern_init_static_copy (&copy.base, pattern);
 323     cairo_matrix_translate (&copy.base.matrix, -extents->x, -extents->y);
 324     status = _cairo_surface_paint (&image->base,
 325                                    CAIRO_OPERATOR_SOURCE,
 326                                    &copy.base,
 327                                    NULL);
 328     if (unlikely (status)) {
 329         cairo_surface_destroy (&image->base);
 330         return (cairo_xcb_pixmap_t *) _cairo_surface_create_in_error (status);
 331     }
 332
 333     pixmap = _pixmap_from_image (target, target->xrender_format, image, shm_info);
 334     cairo_surface_destroy (&image->base);
 335
 336     if (unlikely (pixmap->base.status))
 337         return pixmap;
 338
 339     pixmap->x0 = -extents->x;
 340     pixmap->y0 = -extents->y;
 341     return pixmap;
 342 }
 343
 344 static cairo_xcb_pixmap_t *
 345 _copy_to_pixmap (cairo_xcb_surface_t *source)
 346 {
 347     cairo_xcb_pixmap_t *pixmap;
 348
 349     /* If the source may be a window, we need to copy it and its children
 350      * via a temporary pixmap so that we can IncludeInferiors on the source
 351      * and use ClipByChildren on the destination.
 352      */
 353     if (source->owns_pixmap) {
 354         pixmap = _cairo_xcb_pixmap_copy (source);
 355         if (unlikely (pixmap->base.status))
 356             return pixmap;
 357     } else {
 358         uint32_t values[1];
 359         xcb_gcontext_t gc;
 360
 361         pixmap = _cairo_xcb_pixmap_create (source,
 362                                            source->width,
 363                                            source->height);
 364         if (unlikely (pixmap->base.status))
 365             return pixmap;
 366
 367         gc = _cairo_xcb_screen_get_gc (source->screen,
 368                                        pixmap->pixmap,
 369                                        pixmap->depth);
 370
 371         values[0] = TRUE;
 372         _cairo_xcb_connection_change_gc (pixmap->connection, gc,
 373                                          XCB_GC_SUBWINDOW_MODE, values);
 374
 375         _cairo_xcb_connection_copy_area (pixmap->connection,
 376                                          source->drawable,
 377                                          pixmap->pixmap, gc,
 378                                          0, 0,
 379                                          0, 0,
 380                                          source->width,
 381                                          source->height);
 382
 383         values[0] = FALSE;
 384         _cairo_xcb_connection_change_gc (pixmap->connection, gc,
 385                                          XCB_GC_SUBWINDOW_MODE, values);
 386
 387         _cairo_xcb_screen_put_gc (source->screen,
 388                                   pixmap->depth,
 389                                   gc);
 390     }
 391
 392     return pixmap;
 393 }
 394 static cairo_xcb_pixmap_t *
 395 _cairo_xcb_surface_pixmap (cairo_xcb_surface_t *target,
 396                            const cairo_surface_pattern_t *pattern,
 397                            const cairo_rectangle_int_t *extents,
 398                            int tx, int ty)
 399 {
 400     cairo_surface_t *source;
 401     cairo_xcb_pixmap_t *pixmap;
 402
 403     source =  pattern->surface;
 404     pixmap = (cairo_xcb_pixmap_t *)
 405         _cairo_surface_has_snapshot (source, &_cairo_xcb_pixmap_backend);
 406     if (pixmap != NULL && pixmap->screen == target->screen)
 407         return (cairo_xcb_pixmap_t *) cairo_surface_reference (&pixmap->base);
 408
 409     if (source->type == CAIRO_SURFACE_TYPE_XCB &&
 410         ((cairo_xcb_surface_t *) source)->screen == target->screen)
 411     {
 412         cairo_xcb_surface_t *xcb_source = (cairo_xcb_surface_t *) source;
 413
 414         if (xcb_source->depth == target->depth)
 415             pixmap = _copy_to_pixmap (xcb_source);
 416     }
 417 #if CAIRO_HAS_XLIB_XCB_FUNCTIONS
 418     else if (source->type == CAIRO_SURFACE_TYPE_XLIB &&
 419              ((cairo_xlib_xcb_surface_t *) source)->xcb->screen == target->screen)
 420     {
 421         cairo_xcb_surface_t *xcb_source = ((cairo_xlib_xcb_surface_t *) source)->xcb;
 422
 423         if (xcb_source->depth == target->depth)
 424             pixmap = _copy_to_pixmap (xcb_source);
 425     }
 426 #endif
 427
 428     if (pixmap == NULL) {
 429         cairo_rectangle_int_t rect;
 430
 431         if (! _cairo_surface_get_extents (source, &rect)) {
 432             rect.x = rect.y = 0;
 433             rect.width  = target->width;
 434             rect.height = target->height;
 435         }
 436
 437         pixmap = _render_to_pixmap (target, &pattern->base, &rect);
 438     }
 439
 440     if (unlikely (pixmap->base.status))
 441         return pixmap;
 442
 443     _cairo_surface_attach_snapshot (source, &pixmap->base, NULL);
 444
 445     if (pattern->base.extend != CAIRO_EXTEND_NONE) {
 446         if (extents->x < 0 || extents->y < 0 ||
 447             extents->x + extents->width  > pixmap->width ||
 448             extents->y + extents->height > pixmap->height)
 449         {
 450             pixmap->repeat = TRUE;
 451         }
 452     }
 453
 454     pixmap->x0 += tx;
 455     pixmap->y0 += ty;
 456
 457     return pixmap;
 458 }
 459
 460 static cairo_xcb_pixmap_t *
 461 _cairo_xcb_pixmap_for_pattern (cairo_xcb_surface_t *target,
 462                                const cairo_pattern_t *pattern,
 463                                const cairo_rectangle_int_t *extents)
 464 {
 465     int tx, ty;
 466
 467     switch (pattern->type) {
 468     case CAIRO_PATTERN_TYPE_SURFACE:
 469         /* Core can only perform a native, unscaled blit, but can handle tiles */
 470         if (_cairo_matrix_is_integer_translation (&pattern->matrix, &tx, &ty)) {
 471             switch (pattern->extend) {
 472             case CAIRO_EXTEND_NONE:
 473             case CAIRO_EXTEND_REPEAT:
 474                 return _cairo_xcb_surface_pixmap (target,
 475                                                   (cairo_surface_pattern_t *) pattern,
 476                                                   extents, tx, ty);
 477
 478             default:
 479             case CAIRO_EXTEND_PAD:
 480             case CAIRO_EXTEND_REFLECT:
 481                 break;
 482             }
 483         }
 484         /* fallthrough */
 485     case CAIRO_PATTERN_TYPE_LINEAR:
 486     case CAIRO_PATTERN_TYPE_RADIAL:
 487     case CAIRO_PATTERN_TYPE_MESH:
 488     case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
 489         return _render_to_pixmap (target, pattern, extents);
 490
 491     default:
 492     case CAIRO_PATTERN_TYPE_SOLID:
 493         ASSERT_NOT_REACHED;
 494         return NULL;
 495     }
 496 }
 497
 498 cairo_status_t
 499 _cairo_xcb_surface_core_copy_boxes (cairo_xcb_surface_t         *dst,
 500                                    const cairo_pattern_t        *src_pattern,
 501                                    const cairo_rectangle_int_t  *extents,
 502                                    const cairo_boxes_t          *boxes)
 503 {
 504     cairo_xcb_pixmap_t *src;
 505     const struct _cairo_boxes_chunk *chunk;
 506     xcb_gcontext_t gc;
 507     cairo_status_t status;
 508
 509     status = _cairo_xcb_connection_acquire (dst->connection);
 510     if (unlikely (status))
 511         return status;
 512
 513     src = _cairo_xcb_pixmap_for_pattern (dst, src_pattern, extents);
 514     status = src->base.status;
 515     if (unlikely (status))
 516         goto CLEANUP_CONNECTION;
 517
 518     assert (src->depth == dst->depth);
 519
 520     gc = _cairo_xcb_screen_get_gc (dst->screen, src->pixmap, src->depth);
 521
 522     if (src->repeat) {
 523         uint32_t mask =
 524             XCB_GC_FILL_STYLE |
 525             XCB_GC_TILE |
 526             XCB_GC_TILE_STIPPLE_ORIGIN_X |
 527             XCB_GC_TILE_STIPPLE_ORIGIN_Y;
 528         uint32_t values[] = {
 529             XCB_FILL_STYLE_TILED,
 530             src->pixmap,
 531             - src->x0, - src->y0,
 532         };
 533         xcb_rectangle_t *xcb_rects;
 534
 535         _cairo_xcb_connection_change_gc (dst->connection, gc, mask, values);
 536
 537         for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
 538             int i;
 539
 540             xcb_rects = (xcb_rectangle_t *) chunk->base;
 541
 542             for (i = 0; i < chunk->count; i++) {
 543                 int x1 = _cairo_fixed_integer_round (chunk->base[i].p1.x);
 544                 int x2 = _cairo_fixed_integer_round (chunk->base[i].p2.x);
 545                 int y1 = _cairo_fixed_integer_round (chunk->base[i].p1.y);
 546                 int y2 = _cairo_fixed_integer_round (chunk->base[i].p2.y);
 547
 548                 xcb_rects[i].x = x1;
 549                 xcb_rects[i].y = y1;
 550                 xcb_rects[i].width  = x2 - x1;
 551                 xcb_rects[i].height = y2 - y1;
 552             }
 553             _cairo_xcb_connection_poly_fill_rectangle (dst->connection,
 554                                                        dst->drawable,
 555                                                        gc, chunk->count, xcb_rects);
 556         }
 557
 558         values[0] = 0;
 559         _cairo_xcb_connection_change_gc (dst->connection, gc, XCB_GC_FILL_STYLE, values);
 560     } else {
 561         for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
 562             int i;
 563
 564             for (i = 0; i < chunk->count; i++) {
 565                 int x1 = _cairo_fixed_integer_round (chunk->base[i].p1.x);
 566                 int x2 = _cairo_fixed_integer_round (chunk->base[i].p2.x);
 567                 int y1 = _cairo_fixed_integer_round (chunk->base[i].p1.y);
 568                 int y2 = _cairo_fixed_integer_round (chunk->base[i].p2.y);
 569
 570                 _cairo_xcb_connection_copy_area (dst->connection,
 571                                                  src->pixmap,
 572                                                  dst->drawable, gc,
 573                                                  src->x0 + x1,
 574                                                  src->y0 + y1,
 575                                                  x1, y1,
 576                                                  x2 - x2, y2 - x2);
 577             }
 578         }
 579     }
 580
 581     _cairo_xcb_screen_put_gc (dst->screen, src->depth, gc);
 582     cairo_surface_destroy (&src->base);
 583
 584   CLEANUP_CONNECTION:
 585     _cairo_xcb_connection_release (dst->connection);
 586
 587     return status;
 588 }
 589
 590 cairo_status_t
 591 _cairo_xcb_surface_core_fill_boxes (cairo_xcb_surface_t *dst,
 592                                     const cairo_color_t *color,
 593                                     cairo_boxes_t *boxes)
 594 {
 595     struct _cairo_boxes_chunk *chunk;
 596     xcb_gcontext_t gc;
 597     cairo_status_t status;
 598
 599     status = _cairo_xcb_connection_acquire (dst->connection);
 600     if (unlikely (status))
 601         return status;
 602
 603     gc = _cairo_xcb_screen_get_gc (dst->screen, dst->drawable, dst->depth);
 604
 605 #if 0
 606     xcb_pixmap_t source;
 607
 608     source = _dither_source (dst, color);
 609     XSetTSOrigin (surface->dpy, gc, 0, 0);
 610     XSetTile (surface->dpy, gc, source);
 611 #endif
 612
 613     for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
 614         xcb_rectangle_t *xcb_rects;
 615         int i;
 616
 617         xcb_rects = (xcb_rectangle_t *) chunk->base;
 618         for (i = 0; i < chunk->count; i++) {
 619             int x1 = _cairo_fixed_integer_round (chunk->base[i].p1.x);
 620             int x2 = _cairo_fixed_integer_round (chunk->base[i].p2.x);
 621             int y1 = _cairo_fixed_integer_round (chunk->base[i].p1.y);
 622             int y2 = _cairo_fixed_integer_round (chunk->base[i].p2.y);
 623
 624             xcb_rects[i].x = x1;
 625             xcb_rects[i].y = y1;
 626             xcb_rects[i].width  = x2 - x1;
 627             xcb_rects[i].height = y2 - y1;
 628         }
 629
 630         _cairo_xcb_connection_poly_fill_rectangle (dst->connection,
 631                                                    dst->drawable, gc,
 632                                                    chunk->count, xcb_rects);
 633     }
 634
 635     _cairo_xcb_screen_put_gc (dst->screen, dst->depth, gc);
 636     _cairo_xcb_connection_release (dst->connection);
 637
 638     return CAIRO_STATUS_SUCCESS;
 639 }