0,0 → 1,977 |
/* Cairo - a vector graphics library with display and print output |
* |
* Copyright © 2009 Intel Corporation |
* |
* This library is free software; you can redistribute it and/or |
* modify it either under the terms of the GNU Lesser General Public |
* License version 2.1 as published by the Free Software Foundation |
* (the "LGPL") or, at your option, under the terms of the Mozilla |
* Public License Version 1.1 (the "MPL"). If you do not alter this |
* notice, a recipient may use your version of this file under either |
* the MPL or the LGPL. |
* |
* You should have received a copy of the LGPL along with this library |
* in the file COPYING-LGPL-2.1; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
* You should have received a copy of the MPL along with this library |
* in the file COPYING-MPL-1.1 |
* |
* The contents of this file are subject to the Mozilla Public License |
* Version 1.1 (the "License"); you may not use this file except in |
* compliance with the License. You may obtain a copy of the License at |
* http://www.mozilla.org/MPL/ |
* |
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
* OF ANY KIND, either express or implied. See the LGPL or the MPL for |
* the specific language governing rights and limitations. |
* |
* Authors: |
* Chris Wilson <chris@chris-wilson.co.uk> |
*/ |
|
|
#include "cairoint.h" |
|
#include "cairo-xcb-private.h" |
#include "cairo-hash-private.h" |
#include "cairo-freelist-private.h" |
#include "cairo-list-inline.h" |
|
#include <xcb/xcbext.h> |
#include <xcb/bigreq.h> |
#include <errno.h> |
|
#if CAIRO_HAS_XCB_SHM_FUNCTIONS |
#include <sys/ipc.h> |
#include <sys/shm.h> |
#include <xcb/shm.h> |
#endif |
|
typedef struct _cairo_xcb_xrender_format { |
cairo_hash_entry_t key; |
xcb_render_pictformat_t xrender_format; |
} cairo_xcb_xrender_format_t; |
|
typedef struct _cairo_xcb_xid { |
cairo_list_t link; |
uint32_t xid; |
} cairo_xcb_xid_t; |
|
#define XCB_RENDER_AT_LEAST(V, major, minor) \ |
(((V)->major_version > major) || \ |
(((V)->major_version == major) && ((V)->minor_version >= minor))) |
|
#define XCB_RENDER_HAS_CREATE_PICTURE(surface) XCB_RENDER_AT_LEAST((surface), 0, 0) |
#define XCB_RENDER_HAS_COMPOSITE(surface) XCB_RENDER_AT_LEAST((surface), 0, 0) |
#define XCB_RENDER_HAS_COMPOSITE_TEXT(surface) XCB_RENDER_AT_LEAST((surface), 0, 0) |
|
#define XCB_RENDER_HAS_FILL_RECTANGLES(surface) XCB_RENDER_AT_LEAST((surface), 0, 1) |
|
#define XCB_RENDER_HAS_DISJOINT(surface) XCB_RENDER_AT_LEAST((surface), 0, 2) |
#define XCB_RENDER_HAS_CONJOINT(surface) XCB_RENDER_AT_LEAST((surface), 0, 2) |
|
#define XCB_RENDER_HAS_TRAPEZOIDS(surface) XCB_RENDER_AT_LEAST((surface), 0, 4) |
#define XCB_RENDER_HAS_TRIANGLES(surface) XCB_RENDER_AT_LEAST((surface), 0, 4) |
#define XCB_RENDER_HAS_TRISTRIP(surface) XCB_RENDER_AT_LEAST((surface), 0, 4) |
#define XCB_RENDER_HAS_TRIFAN(surface) XCB_RENDER_AT_LEAST((surface), 0, 4) |
|
#define XCB_RENDER_HAS_PICTURE_TRANSFORM(surface) XCB_RENDER_AT_LEAST((surface), 0, 6) |
#define XCB_RENDER_HAS_FILTERS(surface) XCB_RENDER_AT_LEAST((surface), 0, 6) |
|
#define XCB_RENDER_HAS_EXTENDED_REPEAT(surface) XCB_RENDER_AT_LEAST((surface), 0, 10) |
#define XCB_RENDER_HAS_GRADIENTS(surface) XCB_RENDER_AT_LEAST((surface), 0, 10) |
|
#define XCB_RENDER_HAS_PDF_OPERATORS(surface) XCB_RENDER_AT_LEAST((surface), 0, 11) |
|
static cairo_list_t connections; |
|
static cairo_status_t |
_cairo_xcb_connection_find_visual_formats (cairo_xcb_connection_t *connection, |
const xcb_render_query_pict_formats_reply_t *formats) |
{ |
xcb_render_pictscreen_iterator_t screens; |
xcb_render_pictdepth_iterator_t depths; |
xcb_render_pictvisual_iterator_t visuals; |
|
for (screens = xcb_render_query_pict_formats_screens_iterator (formats); |
screens.rem; |
xcb_render_pictscreen_next (&screens)) |
{ |
for (depths = xcb_render_pictscreen_depths_iterator (screens.data); |
depths.rem; |
xcb_render_pictdepth_next (&depths)) |
{ |
for (visuals = xcb_render_pictdepth_visuals_iterator (depths.data); |
visuals.rem; |
xcb_render_pictvisual_next (&visuals)) |
{ |
cairo_xcb_xrender_format_t *f; |
cairo_status_t status; |
|
f = malloc (sizeof (cairo_xcb_xrender_format_t)); |
if (unlikely (f == NULL)) |
return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
|
f->key.hash = visuals.data->visual; |
f->xrender_format = visuals.data->format; |
status = _cairo_hash_table_insert (connection->visual_to_xrender_format, |
&f->key); |
if (unlikely (status)) |
return status; |
} |
} |
} |
|
return CAIRO_STATUS_SUCCESS; |
} |
|
#if 0 |
static xcb_format_t * |
find_format_for_depth (const xcb_setup_t *setup, uint8_t depth) |
{ |
xcb_format_t *fmt = xcb_setup_pixmap_formats (setup); |
xcb_format_t *fmtend = fmt + xcb_setup_pixmap_formats_length (setup); |
|
for (; fmt != fmtend; ++fmt) |
if (fmt->depth == depth) |
return fmt; |
|
return 0; |
} |
#endif |
|
static cairo_status_t |
_cairo_xcb_connection_parse_xrender_formats (cairo_xcb_connection_t *connection, |
const xcb_render_query_pict_formats_reply_t *formats) |
{ |
xcb_render_pictforminfo_iterator_t i; |
cairo_status_t status; |
|
for (i = xcb_render_query_pict_formats_formats_iterator (formats); |
i.rem; |
xcb_render_pictforminfo_next (&i)) |
{ |
cairo_format_masks_t masks; |
pixman_format_code_t pixman_format; |
|
if (i.data->type != XCB_RENDER_PICT_TYPE_DIRECT) |
continue; |
|
masks.alpha_mask = |
(unsigned long) i.data->direct.alpha_mask << i.data->direct.alpha_shift; |
masks.red_mask = |
(unsigned long) i.data->direct.red_mask << i.data->direct.red_shift; |
masks.green_mask = |
(unsigned long) i.data->direct.green_mask << i.data->direct.green_shift; |
masks.blue_mask = |
(unsigned long) i.data->direct.blue_mask << i.data->direct.blue_shift; |
masks.bpp = i.data->depth; |
|
if (_pixman_format_from_masks (&masks, &pixman_format)) { |
cairo_hash_entry_t key; |
|
key.hash = pixman_format; |
if (! _cairo_hash_table_lookup (connection->xrender_formats, &key)) { |
cairo_xcb_xrender_format_t *f; |
|
f = malloc (sizeof (cairo_xcb_xrender_format_t)); |
if (unlikely (f == NULL)) |
return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
|
f->key.hash = pixman_format; |
f->xrender_format = i.data->id; |
status = _cairo_hash_table_insert (connection->xrender_formats, |
&f->key); |
if (unlikely (status)) |
return status; |
|
#if 0 |
printf ("xrender %x -> (%lx, %lx, %lx, %lx, %d) %x [%d, %d]\n", |
i.data->id, |
masks.alpha_mask, |
masks.red_mask, |
masks.green_mask, |
masks.blue_mask, |
masks.bpp, |
pixman_format, |
PIXMAN_FORMAT_DEPTH(pixman_format), |
PIXMAN_FORMAT_BPP(pixman_format)); |
#endif |
} |
} |
} |
|
status = _cairo_xcb_connection_find_visual_formats (connection, formats); |
if (unlikely (status)) |
return status; |
|
connection->standard_formats[CAIRO_FORMAT_A1] = |
_cairo_xcb_connection_get_xrender_format (connection, PIXMAN_a1); |
|
connection->standard_formats[CAIRO_FORMAT_A8] = |
_cairo_xcb_connection_get_xrender_format (connection, PIXMAN_a8); |
|
connection->standard_formats[CAIRO_FORMAT_RGB24] = |
_cairo_xcb_connection_get_xrender_format (connection, |
PIXMAN_FORMAT (24, |
PIXMAN_TYPE_ARGB, |
0, 8, 8, 8)); |
if (connection->standard_formats[CAIRO_FORMAT_RGB24] == XCB_NONE) { |
connection->standard_formats[CAIRO_FORMAT_RGB24] = |
_cairo_xcb_connection_get_xrender_format (connection, |
PIXMAN_FORMAT (24, PIXMAN_TYPE_ABGR, |
0, 8, 8, 8)); |
} |
|
connection->standard_formats[CAIRO_FORMAT_ARGB32] = |
_cairo_xcb_connection_get_xrender_format (connection, PIXMAN_a8r8g8b8); |
if (connection->standard_formats[CAIRO_FORMAT_ARGB32] == XCB_NONE) { |
connection->standard_formats[CAIRO_FORMAT_ARGB32] = |
_cairo_xcb_connection_get_xrender_format (connection, PIXMAN_a8b8g8r8); |
} |
|
return CAIRO_STATUS_SUCCESS; |
} |
|
/* |
* We require support for depth 1, 8, 24 and 32 pixmaps |
*/ |
#define DEPTH_MASK(d) (1 << ((d) - 1)) |
#define REQUIRED_DEPTHS (DEPTH_MASK(1) | \ |
DEPTH_MASK(8) | \ |
DEPTH_MASK(24) | \ |
DEPTH_MASK(32)) |
static cairo_bool_t |
pixmap_depths_usable (cairo_xcb_connection_t *connection, |
uint32_t missing, |
xcb_drawable_t root) |
{ |
xcb_connection_t *c = connection->xcb_connection; |
xcb_void_cookie_t create_cookie[32]; |
xcb_pixmap_t pixmap; |
cairo_bool_t success = TRUE; |
int depth, i, j; |
|
pixmap = _cairo_xcb_connection_get_xid (connection); |
|
for (depth = 1, i = 0; depth <= 32; depth++) { |
if (missing & DEPTH_MASK(depth)) { |
create_cookie[i] = xcb_create_pixmap_checked (c, depth, pixmap, root, 1, 1); |
xcb_free_pixmap (c, pixmap); |
if (!create_cookie[i].sequence) { |
success = FALSE; |
break; |
} |
i++; |
} |
} |
|
for (j = 0; j < i; j++) { |
xcb_generic_error_t *create_error = xcb_request_check (c, create_cookie[j]); |
success &= create_error == NULL; |
free (create_error); |
} |
|
_cairo_xcb_connection_put_xid (connection, pixmap); |
|
return success; |
} |
|
static cairo_bool_t |
has_required_depths (cairo_xcb_connection_t *connection) |
{ |
xcb_screen_iterator_t screens; |
|
for (screens = xcb_setup_roots_iterator (connection->root); |
screens.rem; |
xcb_screen_next (&screens)) |
{ |
xcb_depth_iterator_t depths; |
uint32_t missing = REQUIRED_DEPTHS; |
|
for (depths = xcb_screen_allowed_depths_iterator (screens.data); |
depths.rem; |
xcb_depth_next (&depths)) |
{ |
missing &= ~DEPTH_MASK (depths.data->depth); |
} |
if (missing == 0) |
continue; |
|
/* |
* Ok, this is ugly. It should be sufficient at this |
* point to just return false, but Xinerama is broken at |
* this point and only advertises depths which have an |
* associated visual. Of course, the other depths still |
* work, but the only way to find out is to try them. |
*/ |
if (! pixmap_depths_usable (connection, missing, screens.data->root)) |
return FALSE; |
} |
|
return TRUE; |
} |
|
static xcb_render_query_version_reply_t * |
_render_restrict_env(xcb_render_query_version_reply_t *version) |
{ |
const char *env; |
|
if (version == NULL) |
return NULL; |
|
env = getenv ("CAIRO_DEBUG"); |
if (env != NULL) |
env = strstr (env, "xrender-version="); |
if (env != NULL) { |
int max_render_major, max_render_minor; |
|
env += sizeof ("xrender-version=") - 1; |
if (sscanf (env, "%d.%d", &max_render_major, &max_render_minor) != 2) |
max_render_major = max_render_minor = -1; |
|
if (max_render_major < 0 || max_render_minor < 0) { |
free (version); |
return NULL; |
} |
|
if (max_render_major < (int) version->major_version || |
(max_render_major == (int) version->major_version && |
max_render_minor < (int) version->minor_version)) |
{ |
version->major_version = max_render_major; |
version->minor_version = max_render_minor; |
} |
} |
|
return version; |
} |
|
static cairo_status_t |
_cairo_xcb_connection_query_render (cairo_xcb_connection_t *connection) |
{ |
xcb_connection_t *c = connection->xcb_connection; |
xcb_render_query_version_cookie_t version_cookie; |
xcb_render_query_pict_formats_cookie_t formats_cookie; |
xcb_render_query_version_reply_t *version; |
xcb_render_query_pict_formats_reply_t *formats; |
cairo_status_t status; |
cairo_bool_t present; |
|
version_cookie = xcb_render_query_version (c, XCB_RENDER_MAJOR_VERSION, XCB_RENDER_MINOR_VERSION); |
formats_cookie = xcb_render_query_pict_formats (c); |
|
present = has_required_depths (connection); |
version = xcb_render_query_version_reply (c, version_cookie, 0); |
formats = xcb_render_query_pict_formats_reply (c, formats_cookie, 0); |
|
version = _render_restrict_env (version); |
|
if (! present || version == NULL || formats == NULL) { |
free (version); |
free (formats); |
return CAIRO_STATUS_SUCCESS; |
} |
|
/* always true if the extension is present (i.e. >= 0.0) */ |
connection->flags |= CAIRO_XCB_HAS_RENDER; |
connection->flags |= CAIRO_XCB_RENDER_HAS_COMPOSITE; |
connection->flags |= CAIRO_XCB_RENDER_HAS_COMPOSITE_GLYPHS; |
|
if (XCB_RENDER_HAS_FILL_RECTANGLES (version)) |
connection->flags |= CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES; |
|
if (XCB_RENDER_HAS_TRAPEZOIDS (version)) |
connection->flags |= CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS; |
|
if (XCB_RENDER_HAS_PICTURE_TRANSFORM (version)) |
connection->flags |= CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM; |
|
if (XCB_RENDER_HAS_FILTERS (version)) |
connection->flags |= CAIRO_XCB_RENDER_HAS_FILTERS; |
|
if (XCB_RENDER_HAS_PDF_OPERATORS (version)) |
connection->flags |= CAIRO_XCB_RENDER_HAS_PDF_OPERATORS; |
|
if (XCB_RENDER_HAS_EXTENDED_REPEAT (version)) |
connection->flags |= CAIRO_XCB_RENDER_HAS_EXTENDED_REPEAT; |
|
if (XCB_RENDER_HAS_GRADIENTS (version)) |
connection->flags |= CAIRO_XCB_RENDER_HAS_GRADIENTS; |
|
free (version); |
|
status = _cairo_xcb_connection_parse_xrender_formats (connection, formats); |
free (formats); |
|
return status; |
} |
|
#if 0 |
static void |
_cairo_xcb_connection_query_cairo (cairo_xcb_connection_t *connection) |
{ |
xcb_connection_t *c = connection->xcb_connection; |
xcb_cairo_query_version_reply_t *version; |
|
version = xcb_cairo_query_version_reply (c, |
xcb_cairo_query_version (c, 0, 0), |
0); |
|
free (version); |
} |
#endif |
|
#if CAIRO_HAS_XCB_SHM_FUNCTIONS |
static cairo_bool_t |
can_use_shm (cairo_xcb_connection_t *connection) |
{ |
cairo_bool_t success = TRUE; |
xcb_connection_t *c = connection->xcb_connection; |
xcb_void_cookie_t cookie[2]; |
xcb_generic_error_t *error; |
int shmid; |
uint32_t shmseg; |
void *ptr; |
|
shmid = shmget (IPC_PRIVATE, 0x1000, IPC_CREAT | 0600); |
if (shmid == -1) |
return FALSE; |
|
ptr = shmat (shmid, NULL, 0); |
if (ptr == (char *) -1) { |
shmctl (shmid, IPC_RMID, NULL); |
return FALSE; |
} |
|
shmseg = _cairo_xcb_connection_get_xid (connection); |
cookie[0] = xcb_shm_attach_checked (c, shmseg, shmid, FALSE); |
cookie[1] = xcb_shm_detach_checked (c, shmseg); |
_cairo_xcb_connection_put_xid (connection, shmseg); |
|
error = xcb_request_check (c, cookie[0]); |
if (error != NULL) |
success = FALSE; |
|
error = xcb_request_check (c, cookie[1]); |
if (error != NULL) |
success = FALSE; |
|
shmctl (shmid, IPC_RMID, NULL); |
shmdt (ptr); |
|
return success; |
} |
|
static void |
_cairo_xcb_connection_query_shm (cairo_xcb_connection_t *connection) |
{ |
xcb_connection_t *c = connection->xcb_connection; |
xcb_shm_query_version_reply_t *version; |
|
version = xcb_shm_query_version_reply (c, xcb_shm_query_version (c), 0); |
if (version == NULL) |
return; |
|
free (version); |
|
if (can_use_shm (connection)) |
connection->flags |= CAIRO_XCB_HAS_SHM; |
} |
#endif |
|
static cairo_status_t |
_device_flush (void *device) |
{ |
cairo_xcb_connection_t *connection = device; |
cairo_status_t status; |
|
status = cairo_device_acquire (&connection->device); |
if (unlikely (status)) |
return status; |
|
#if CAIRO_HAS_XCB_SHM_FUNCTIONS |
_cairo_xcb_connection_shm_mem_pools_flush (connection); |
#endif |
|
xcb_flush (connection->xcb_connection); |
|
cairo_device_release (&connection->device); |
return CAIRO_STATUS_SUCCESS; |
} |
|
static void |
_pluck_xrender_format (void *entry, |
void *closure) |
{ |
_cairo_hash_table_remove (closure, entry); |
free (entry); |
} |
|
static void |
_device_finish (void *device) |
{ |
cairo_xcb_connection_t *connection = device; |
cairo_bool_t was_cached = FALSE; |
|
if (! cairo_list_is_empty (&connection->link)) { |
CAIRO_MUTEX_LOCK (_cairo_xcb_connections_mutex); |
cairo_list_del (&connection->link); |
CAIRO_MUTEX_UNLOCK (_cairo_xcb_connections_mutex); |
was_cached = TRUE; |
} |
|
while (! cairo_list_is_empty (&connection->fonts)) { |
cairo_xcb_font_t *font; |
|
font = cairo_list_first_entry (&connection->fonts, |
cairo_xcb_font_t, |
link); |
_cairo_xcb_font_close (font); |
} |
|
while (! cairo_list_is_empty (&connection->screens)) { |
cairo_xcb_screen_t *screen; |
|
screen = cairo_list_first_entry (&connection->screens, |
cairo_xcb_screen_t, |
link); |
_cairo_xcb_screen_finish (screen); |
} |
|
#if CAIRO_HAS_XCB_SHM_FUNCTIONS |
/* _cairo_xcb_screen_finish finishes surfaces. If any of those surfaces had |
* a fallback image, we might have done a SHM PutImage. */ |
_cairo_xcb_connection_shm_mem_pools_flush (connection); |
#endif |
|
if (was_cached) |
cairo_device_destroy (device); |
} |
|
static void |
_device_destroy (void *device) |
{ |
cairo_xcb_connection_t *connection = device; |
|
_cairo_hash_table_foreach (connection->xrender_formats, |
_pluck_xrender_format, connection->xrender_formats); |
_cairo_hash_table_destroy (connection->xrender_formats); |
|
_cairo_hash_table_foreach (connection->visual_to_xrender_format, |
_pluck_xrender_format, |
connection->visual_to_xrender_format); |
_cairo_hash_table_destroy (connection->visual_to_xrender_format); |
|
#if CAIRO_HAS_XCB_SHM_FUNCTIONS |
_cairo_xcb_connection_shm_mem_pools_fini (connection); |
#endif |
_cairo_freepool_fini (&connection->shm_info_freelist); |
|
_cairo_freepool_fini (&connection->xid_pool); |
|
CAIRO_MUTEX_FINI (connection->shm_mutex); |
CAIRO_MUTEX_FINI (connection->screens_mutex); |
|
free (connection); |
} |
|
static const cairo_device_backend_t _cairo_xcb_device_backend = { |
CAIRO_DEVICE_TYPE_XCB, |
|
NULL, NULL, /* lock, unlock */ |
|
_device_flush, |
_device_finish, |
_device_destroy, |
}; |
|
cairo_xcb_connection_t * |
_cairo_xcb_connection_get (xcb_connection_t *xcb_connection) |
{ |
cairo_xcb_connection_t *connection; |
const xcb_query_extension_reply_t *ext; |
cairo_status_t status; |
|
CAIRO_MUTEX_INITIALIZE (); |
|
CAIRO_MUTEX_LOCK (_cairo_xcb_connections_mutex); |
if (connections.next == NULL) { |
/* XXX _cairo_init () */ |
cairo_list_init (&connections); |
} |
|
cairo_list_foreach_entry (connection, |
cairo_xcb_connection_t, |
&connections, |
link) |
{ |
if (connection->xcb_connection == xcb_connection) { |
/* Maintain MRU order. */ |
if (connections.next != &connection->link) |
cairo_list_move (&connection->link, &connections); |
|
goto unlock; |
} |
} |
|
connection = malloc (sizeof (cairo_xcb_connection_t)); |
if (unlikely (connection == NULL)) |
goto unlock; |
|
_cairo_device_init (&connection->device, &_cairo_xcb_device_backend); |
|
connection->xcb_connection = xcb_connection; |
|
cairo_list_init (&connection->fonts); |
cairo_list_init (&connection->screens); |
cairo_list_init (&connection->link); |
connection->xrender_formats = _cairo_hash_table_create (NULL); |
if (connection->xrender_formats == NULL) { |
CAIRO_MUTEX_FINI (connection->device.mutex); |
free (connection); |
connection = NULL; |
goto unlock; |
} |
|
connection->visual_to_xrender_format = _cairo_hash_table_create (NULL); |
if (connection->visual_to_xrender_format == NULL) { |
_cairo_hash_table_destroy (connection->xrender_formats); |
CAIRO_MUTEX_FINI (connection->device.mutex); |
free (connection); |
connection = NULL; |
goto unlock; |
} |
|
cairo_list_init (&connection->free_xids); |
_cairo_freepool_init (&connection->xid_pool, |
sizeof (cairo_xcb_xid_t)); |
|
cairo_list_init (&connection->shm_pools); |
cairo_list_init (&connection->shm_pending); |
_cairo_freepool_init (&connection->shm_info_freelist, |
sizeof (cairo_xcb_shm_info_t)); |
|
connection->maximum_request_length = |
xcb_get_maximum_request_length (xcb_connection); |
|
CAIRO_MUTEX_INIT (connection->shm_mutex); |
CAIRO_MUTEX_INIT (connection->screens_mutex); |
|
CAIRO_MUTEX_LOCK (connection->device.mutex); |
|
connection->flags = 0; |
connection->force_precision = -1; |
|
xcb_prefetch_extension_data (xcb_connection, &xcb_big_requests_id); |
xcb_prefetch_extension_data (xcb_connection, &xcb_render_id); |
#if CAIRO_HAS_XCB_SHM_FUNCTIONS |
xcb_prefetch_extension_data (xcb_connection, &xcb_shm_id); |
#endif |
#if 0 |
xcb_prefetch_extension_data (xcb_connection, &xcb_cairo_id); |
#endif |
|
xcb_prefetch_maximum_request_length (xcb_connection); |
|
connection->root = xcb_get_setup (xcb_connection); |
connection->render = NULL; |
ext = xcb_get_extension_data (xcb_connection, &xcb_render_id); |
if (ext != NULL && ext->present) { |
status = _cairo_xcb_connection_query_render (connection); |
if (unlikely (status)) { |
CAIRO_MUTEX_UNLOCK (connection->device.mutex); |
_cairo_xcb_connection_destroy (connection); |
connection = NULL; |
goto unlock; |
} |
|
connection->render = ext; |
} |
|
#if 0 |
ext = xcb_get_extension_data (connection, &xcb_cairo_id); |
if (ext != NULL && ext->present) |
_cairo_xcb_connection_query_cairo (connection); |
#endif |
|
connection->shm = NULL; |
#if CAIRO_HAS_XCB_SHM_FUNCTIONS |
ext = xcb_get_extension_data (xcb_connection, &xcb_shm_id); |
if (ext != NULL && ext->present) { |
_cairo_xcb_connection_query_shm (connection); |
connection->shm = ext; |
} |
#endif |
|
connection->original_flags = connection->flags; |
|
CAIRO_MUTEX_UNLOCK (connection->device.mutex); |
|
cairo_list_add (&connection->link, &connections); |
unlock: |
CAIRO_MUTEX_UNLOCK (_cairo_xcb_connections_mutex); |
|
return connection; |
} |
|
xcb_render_pictformat_t |
_cairo_xcb_connection_get_xrender_format (cairo_xcb_connection_t *connection, |
pixman_format_code_t pixman_format) |
{ |
cairo_hash_entry_t key; |
cairo_xcb_xrender_format_t *format; |
|
key.hash = pixman_format; |
format = _cairo_hash_table_lookup (connection->xrender_formats, &key); |
return format ? format->xrender_format : XCB_NONE; |
} |
|
xcb_render_pictformat_t |
_cairo_xcb_connection_get_xrender_format_for_visual (cairo_xcb_connection_t *connection, |
const xcb_visualid_t visual) |
{ |
cairo_hash_entry_t key; |
cairo_xcb_xrender_format_t *format; |
|
key.hash = visual; |
format = _cairo_hash_table_lookup (connection->visual_to_xrender_format, &key); |
return format ? format->xrender_format : XCB_NONE; |
} |
|
void |
_cairo_xcb_connection_put_xid (cairo_xcb_connection_t *connection, |
uint32_t xid) |
{ |
cairo_xcb_xid_t *cache; |
|
assert (CAIRO_MUTEX_IS_LOCKED (connection->device.mutex)); |
cache = _cairo_freepool_alloc (&connection->xid_pool); |
if (likely (cache != NULL)) { |
cache->xid = xid; |
cairo_list_add (&cache->link, &connection->free_xids); |
} |
} |
|
uint32_t |
_cairo_xcb_connection_get_xid (cairo_xcb_connection_t *connection) |
{ |
uint32_t xid; |
|
assert (CAIRO_MUTEX_IS_LOCKED (connection->device.mutex)); |
if (! cairo_list_is_empty (&connection->free_xids)) { |
cairo_xcb_xid_t *cache; |
|
cache = cairo_list_first_entry (&connection->free_xids, |
cairo_xcb_xid_t, |
link); |
xid = cache->xid; |
|
cairo_list_del (&cache->link); |
_cairo_freepool_free (&connection->xid_pool, cache); |
} else { |
xid = xcb_generate_id (connection->xcb_connection); |
} |
|
return xid; |
} |
|
/** |
* cairo_xcb_device_get_connection: |
* @device: a #cairo_device_t for the XCB backend |
* |
* Get the connection for the XCB device. |
* |
* Returns: the #xcb_connection_t for the connection |
* |
* Since: 1.12 |
**/ |
xcb_connection_t * |
cairo_xcb_device_get_connection (cairo_device_t *device) |
{ |
if (device->backend->type != CAIRO_DEVICE_TYPE_XCB) |
return NULL; |
|
return ((cairo_xcb_connection_t *)device)->xcb_connection; |
} |
|
/* public (debug) interface */ |
|
/** |
* cairo_xcb_device_debug_cap_xshm_version: |
* @device: a #cairo_device_t for the XCB backend |
* @major_version: major version to restrict to |
* @minor_version: minor version to restrict to |
* |
* Restricts all future XCB surfaces for this devices to the specified version |
* of the SHM extension. This function exists solely for debugging purpose. |
* It let's you find out how cairo would behave with an older version of |
* the SHM extension. |
* |
* Use the special values -1 and -1 for disabling the SHM extension. |
* |
* Since: 1.12 |
**/ |
void |
cairo_xcb_device_debug_cap_xshm_version (cairo_device_t *device, |
int major_version, |
int minor_version) |
{ |
cairo_xcb_connection_t *connection = (cairo_xcb_connection_t *) device; |
|
if (device->backend->type != CAIRO_DEVICE_TYPE_XCB) { |
cairo_status_t status; |
|
status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH); |
(void) status; |
return; |
} |
|
/* First reset all the SHM flags to their original value. This works |
* because we only ever clear bits after the connection was created. |
*/ |
connection->flags |= (connection->original_flags & CAIRO_XCB_SHM_MASK); |
|
/* clear any flags that are inappropriate for the desired version */ |
if (major_version < 0 && minor_version < 0) { |
connection->flags &= ~(CAIRO_XCB_HAS_SHM); |
} |
} |
|
/** |
* cairo_xcb_device_debug_cap_xrender_version: |
* @device: a #cairo_device_t for the XCB backend |
* @major_version: major version to restrict to |
* @minor_version: minor version to restrict to |
* |
* Restricts all future XCB surfaces for this devices to the specified version |
* of the RENDER extension. This function exists solely for debugging purpose. |
* It let's you find out how cairo would behave with an older version of |
* the RENDER extension. |
* |
* Use the special values -1 and -1 for disabling the RENDER extension. |
* |
* Since: 1.12 |
**/ |
void |
cairo_xcb_device_debug_cap_xrender_version (cairo_device_t *device, |
int major_version, |
int minor_version) |
{ |
cairo_xcb_connection_t *connection = (cairo_xcb_connection_t *) device; |
|
if (device->backend->type != CAIRO_DEVICE_TYPE_XCB) { |
cairo_status_t status; |
|
status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH); |
(void) status; |
return; |
} |
|
/* First reset all the RENDER flags to their original value. This works |
* because we only ever clear bits after the connection was created. |
*/ |
connection->flags |= (connection->original_flags & CAIRO_XCB_RENDER_MASK); |
|
/* clear any flags that are inappropriate for the desired version */ |
if (major_version < 0 && minor_version < 0) { |
connection->flags &= ~(CAIRO_XCB_HAS_RENDER | |
CAIRO_XCB_RENDER_HAS_COMPOSITE | |
CAIRO_XCB_RENDER_HAS_COMPOSITE_GLYPHS | |
CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES | |
CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS | |
CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM | |
CAIRO_XCB_RENDER_HAS_FILTERS | |
CAIRO_XCB_RENDER_HAS_PDF_OPERATORS | |
CAIRO_XCB_RENDER_HAS_EXTENDED_REPEAT | |
CAIRO_XCB_RENDER_HAS_GRADIENTS); |
} else { |
xcb_render_query_version_reply_t version; |
|
version.major_version = major_version; |
version.minor_version = minor_version; |
|
if (! XCB_RENDER_HAS_FILL_RECTANGLES (&version)) |
connection->flags &= ~CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES; |
|
if (! XCB_RENDER_HAS_TRAPEZOIDS (&version)) |
connection->flags &= ~CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS; |
|
if (! XCB_RENDER_HAS_PICTURE_TRANSFORM (&version)) |
connection->flags &= ~CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM; |
|
if (! XCB_RENDER_HAS_FILTERS (&version)) |
connection->flags &= ~CAIRO_XCB_RENDER_HAS_FILTERS; |
|
if (! XCB_RENDER_HAS_PDF_OPERATORS (&version)) |
connection->flags &= ~CAIRO_XCB_RENDER_HAS_PDF_OPERATORS; |
|
if (! XCB_RENDER_HAS_EXTENDED_REPEAT (&version)) |
connection->flags &= ~CAIRO_XCB_RENDER_HAS_EXTENDED_REPEAT; |
|
if (! XCB_RENDER_HAS_GRADIENTS (&version)) |
connection->flags &= ~CAIRO_XCB_RENDER_HAS_GRADIENTS; |
} |
} |
#if CAIRO_HAS_XLIB_XCB_FUNCTIONS |
slim_hidden_def (cairo_xcb_device_debug_cap_xrender_version); |
#endif |
|
/** |
* cairo_xcb_device_debug_set_precision: |
* @device: a #cairo_device_t for the XCB backend |
* @precision: the precision to use |
* |
* Render supports two modes of precision when rendering trapezoids. Set |
* the precision to the desired mode. |
* |
* Since: 1.12 |
**/ |
void |
cairo_xcb_device_debug_set_precision (cairo_device_t *device, |
int precision) |
{ |
if (device == NULL || device->status) |
return; |
if (device->backend->type != CAIRO_DEVICE_TYPE_XCB) { |
cairo_status_t status; |
|
status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH); |
(void) status; |
return; |
} |
|
((cairo_xcb_connection_t *) device)->force_precision = precision; |
} |
#if CAIRO_HAS_XLIB_XCB_FUNCTIONS |
slim_hidden_def (cairo_xcb_device_debug_set_precision); |
#endif |
|
/** |
* cairo_xcb_device_debug_get_precision: |
* @device: a #cairo_device_t for the XCB backend |
* |
* Get the Xrender precision mode. |
* |
* Returns: the render precision mode |
* |
* Since: 1.12 |
**/ |
int |
cairo_xcb_device_debug_get_precision (cairo_device_t *device) |
{ |
if (device == NULL || device->status) |
return -1; |
if (device->backend->type != CAIRO_DEVICE_TYPE_XCB) { |
cairo_status_t status; |
|
status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH); |
(void) status; |
return -1; |
} |
|
return ((cairo_xcb_connection_t *) device)->force_precision; |
} |
#if CAIRO_HAS_XLIB_XCB_FUNCTIONS |
slim_hidden_def (cairo_xcb_device_debug_get_precision); |
#endif |