Eventually someone might try to paint to the xcb surface again. However,
_cairo_surface_begin_modification doesn't like that:
cairo-surface.c:385: _cairo_surface_begin_modification: Assertion
`surface->snapshot_of == ((void *)0)' failed.
There was only a single place in the xcb backend where a cairo_xcb_surface_t
could be used as a snapshot, so the _cairo_surface_has_snapshot that checked for
such a surface can be removed, too.
This does *not* remove all snapshots from the xcb backend, but all the remaining
snapshots are instances of cairo_xcb_picture_t. These surfaces are only ever
created internally and thus can't be modified by users directly.
Fixes: xcb-snapshot-assert
Signed-off-by: Uli Schlachter <psychon@znc.in>
When e.g. using an image surface as the source for a xcb surface, a
cairo_xcb_picture_t is created and attached to that image surface as a snapshot.
This contains the Picture that was created on the X11 server.
However, as soon as the cairo_xcb_picture_t's cairo_xcb_screen_t is finished and
destroyed, this picture can't be used anymore. This commit now makes sure all
these Pictures are freed when the screen is finished.
This was found because my X server's memory usage grew quite large. Every time
the app was done drawing, it destroyed its last surface which also destroyed the
last reference to the cairo_xcb_screen_t. This meant that the existing Picture
snapshots couldn't be used anymore, but they were still kept around and used up
memory until there wasn't any free memory left.
Signed-off-by: Uli Schlachter <psychon@znc.in>
The next commit will make cairo-xcb-screen.c use this struct and add new
members. Splitting off the move into its own commits makes that easier to
understand.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This commits makes the xlib-xcb backend produce its own cairo_device_t. This
per-Display* device is used to manage the registration of a XCloseDisplay hook
via XAddExtension/XESetCloseDisplay in the same way that the xlib backend does
this. The device is necessary to see if we already registered an extension.
This fixes weird errors when running cairo-test-suite with -a -s. They were
caused because the backend didn't see the XCloseDisplay and the next
XOpenDisplay happened to create a xcb_connection_t with the same address as the
last display. This caused the xcb backend to assume lots of wrongness.
This commit makes use of _cairo_xlib_display_mutex which is otherwise compiled
in but not used anywhere when xlib-xcb is enabled.
Patch v2: Fixed the xcb_device == NULL case and made sure the xcb_device is only
finished on XCloseDisplay, not when all xlib-xcb surfaces are destroyed.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Define a new device type to indicate that the device is not valid.
The -1 value is along the same line as CAIRO_FORMAT_INVALID (and is
likely to have the same issues).
Instead of abusing CAIRO_STATUS_SURFACE_FINISHED to indicate the use
of a finished device, define and use the new error status
CAIRO_STATUS_DEVICE_FINISHED.
cairo_pattern_create_rgb() and cairo_pattern_add_color_stop_rgb()
implement the same logic as cairo_pattern_create_rgba() and
cairo_pattern_add_color_stop_rgba() with an alpha == 1.0.
Instead of duplicating the code, they can simply call into the more
general functions.
Dynamically creating error contexts requires locking and failure
handling. The code logic can be simplified by statically defining all
the possible error contexts.
In commit f46ba56d5b the static context
stash was replaced by a dynamic freed pool, which needs to be cleared
upon resets.
Fixes:
cairo.c:181: warning: ‘context_pool’ defined but not used
Reported-by: Uli Schlachter <psychon@znc.in>
Conditional compilation was needed to avoid warnings:
cairo-clip.c:51: warning: ‘clip_path_pool’ defined but not used
cairo.c:181: warning: ‘context_pool’ defined but not used
They can be avoided by making sure that _freed_pool_reset(ptr)
actually consumes its argument. This has the pleasant side-effect that
forgetting to properly reset a freed-pool now results in a warning if
atomic ops are disabled/not available.
Instead, this now uses the surface wrapper functions for this job.
These functions make sure that e.g. snapshots are detached and that is_clear is
reset correctly.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Also, this now sets surface->xcb to NULL after the dereference. Segfaults are
way more prominent anyway. :-)
All the backend callbacks shouldn't need any checks since the public entry point
already checks for finished surfaces. Only the public functions in xlib-xcb need
to do checks for finished surfaces.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Since commit f1d313e0, the 'force' argument to _copy_to_picture() isn't used
anymore. Said commit should have removed it. Whoops.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This function called directly into the xcb's surface flush function. This means
that snapshots for that surface weren't detached since that's normally done in
cairo_surface_flush() before calling into the backend.
Fix this by using surface_flush() instead of calling into the backend directly.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=31931
Signed-off-by: Uli Schlachter <psychon@znc.in>
If the X11 server doesn't have the RENDER extension, the xcb backend falls back
to the image backend in some cases (e.g. create_similar). xlib-xcb didn't handle
this properly which means it used the result like a xcb surface.
Found while debugging https://bugs.freedesktop.org/show_bug.cgi?id=31931,
firefox died from a BadDrawable error when it tried to use the (bogous) result
from cairo_xlib_surface_get_drawable().
Signed-off-by: Uli Schlachter <psychon@znc.in>
The functions cairo_xlib_surface_set_size and cairo_xlib_surface_set_drawable
didn't set the expected error when called with a finished surface.
Signed-off-by: Uli Schlachter <psychon@znc.in>
There are debug functions for setting the precision on a xlib device, so
xlib-xcb must redirect that to the xcb backend, too. However this means that
these public functions now are also called internally, thus we have to make them
go through the slim_hidden_* macros.
This commit fixes the following error from "make check":
Checking .libs/libcairo.so for local PLT entries
00000000002bb6d8 000001e300000007 R_X86_64_JUMP_SLOT 000000000006d8a0 cairo_xcb_device_debug_set_precision + 0
00000000002bb750 0000025e00000007 R_X86_64_JUMP_SLOT 000000000006d8b0 cairo_xcb_device_debug_get_precision + 0
FAIL: check-plt.sh
Signed-off-by: Uli Schlachter <psychon@znc.in>
In order to defer the pixel conversion till as late in the pipeline as
possible, we want to try and preserve the pixman image format whilst
uploading the pixel data. To do this, we want to create an XRender
surface with a matching PictFormat to the source image. Then we need to
make sure we take the quick path through _draw_image_surface for none
and direct conversions.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reuse the freed-pool system to reduce allocation pressure of context
creation/destruction.
As a side effect, this removes the use of ffs() on Win32, cleaning up
some MSVC-specific code and fixing a mingw-related build issue.
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=30277
The extents of the boxes were being computed by taking into account
just the first box instead of all of them.
Based on a patch by James Cloos.
Fixes clip-disjoint, clip-stroke-unbounded, clip-fill-nz-unbounded,
clip-fill-eo-unbounded, clip-fill, clip-stroke, trap-clip.
See https://bugs.freedesktop.org/show_bug.cgi?id=38641
Reviewed-by: James Cloos <cloos@jhcloos.com>
Tested-by: James Cloos <cloos@jhcloos.com>
In 63bdae27a8, new fields were added to cairo_xcb_connection_t and
cairo_xcb_surface_t. The same change was done in the xlib backend.
However, in the xlib backend these new fields were properly initialized. This
was forgotten in the xcb backend.
Hopefully-Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=38482
Signed-off-by: Uli Schlachter <psychon@znc.in>
This adds checks for negative sizes in cairo_surface_create_similar() and for
non-positive sizes in all public surface-creation functions in the xcb and xlib
backends.
X11 doesn't allow 0 as width/height, so if anyone claims to have a drawable of
that size, he can't be right. However, cairo allows such sizes which is why
create_similar doesn't reject 0.
Signed-off-by: Uli Schlachter <psychon@znc.in>
cairo-perf-trace uses cairo-hash.c, which calls _cairo_error.
Instead of redefining it in cairo-perf-trace.c it can be abstracted in
a separate source which is directly included in the build of
cairo-perf-trace.
This avoids visibility issues when compiling cairo-perf-trace with a
statically linked cairo library on architectures which do not support
hidden visibility (example: win32).
The hashtable is guaranteed to only contain font faces which are
currently referenced, hence there is no need to remove any font face
when it is reset (just like for toy-font).
This makes the function simpler and fixes the assertion
Assertion failed: predicate != NULL, file cairo-hash.c, line 373
hit by multiple tests (the first one being "clear").
See https://bugs.freedesktop.org/show_bug.cgi?id=38049
If the hashtable cointains a font matching the font being created,
only reuse it if it is not in an error status. Otherwise, remove it
from teh hashtable and create a new one.
Since 03be41151d, it is safe to use
cairo_font_face_reference () to increment the reference count of a
font taken from the hashtable, because no mutex is being locked twice.
Since 92d7b1eee9 the flush vfunction
should return a cairo_status_t.
Silences the warning:
cairo-script-surface.c: At top level:
cairo-script-surface.c:3528:5: warning: initialization from
incompatible pointer type [enabled by default]
cairo-script-surface.c:3528:5: warning: (near initialization for
'_cairo_script_device_backend.flush') [enabled by default]
63bdae27a8 introduced a new public API
cairo_xlib_device_debug_set_precision(), exported by cairo-xlib.
cairo-xlib-xcb must implement it as well, because it must provide the
same public API.
Fixes the compilation of cairo-sphinx with --enable-tee
--enable-xlib-xcb --enable-script.
Reported-by: James Cloos <cloos@jhcloos.com>
45665c0d48 breaks the build of
cairo-xlib-xcb because it does not disable the compilation of
cairo-xlib implementation files when cairo-xlib-xcb is enable. This
results in collisions when linking.
Reported-by: James Cloos <cloos@jhcloos.com>
The assumption that no font face will hash to 0 is not correct.
Moreover, no special value is needed to mark fonts in error status, as
they can simply be detected upon lookup and destruction.
Silence the warning:
cairo-path-stroke.c: In function '_cairo_stroker_add_caps':
cairo-path-stroke.c:861:29: warning: comparison between
'cairo_line_cap_t' and 'enum _cairo_line_join' [-Wenum-compare]
CAIRO_LINE_JOIN_ROUND and CAIRO_LINE_CAP_ROUND have the same value,
hence this defect went unnoticed so far.
Winding of a box is toggled by swapping x1, x2 coordinates. So
we have to swap those coordinate rather than just copying.
Many routines assume that boxes are left-top to right-bottom
convention. So tessellator should produce such output boxes.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
make on win32 complains that:
make[1]: Entering directory `/home/ranma42/Code/fdo/cairo/src'
../src/Makefile.sources:220: *** missing separator. Stop.
Makefile.sources should not contain if's, which are aoutomake-only
conditionals. The correct way to conditionally include files is to
enable/disable them using C preprocessor macros.
We can't use an X11 surface in create_similar if the specified coordinates are
too small/large. However, we can still use SHM-backed memory for the image
surface which will be used instead.
Thanks to Chris Wilson for the hint.
Signed-off-by: Uli Schlachter <psychon@znc.in>
The PDF blend operators, as offered by cairo, where added in RENDER 0.11. This
commit makes the XCB backend use them, if they are available.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This reverts commit f6e6891b59.
Returning NULL in these cases is actually the right thing to do, because the
caller expects and handles this case.
cairo_surface_create_similar() won't return NULL due to this, because
_cairo_surface_create_similar_solid() will fall back to an image surface.
I think I missed that part when I wrote the bad commit.
This was found via the test suite's "zero-mask" test.
Signed-off-by: Uli Schlachter <psychon@znc.in>
