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<div class="moz-cite-prefix">Does this take care of the Glyph
rendering issues in the SVGs too? If so, you would be my hero for
the next 15 minutes. So serious.<br>
<pre class="moz-signature" cols="72">'We who cut mere stones must always be envisioning cathedrals.'
Quarry Worker's Creed</pre>
On 10/5/2012 11:27 AM, Chris Wilson wrote:<br>
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cite="mid:20121005162707.GA12161@cantiga.alporthouse.com"
type="cite">
<pre wrap="">A new cairo release 1.12.4 is now available from:
<a class="moz-txt-link-freetext" href="http://cairographics.org/releases/cairo-1.12.4.tar.xz">http://cairographics.org/releases/cairo-1.12.4.tar.xz</a>
which can be verified with:
<a class="moz-txt-link-freetext" href="http://cairographics.org/releases/cairo-1.12.4.tar.xz.sha1">http://cairographics.org/releases/cairo-1.12.4.tar.xz.sha1</a>
f4158981ed01e73c94fb8072074b17feee61a68b cairo-1.12.4.tar.xz
<a class="moz-txt-link-freetext" href="http://cairographics.org/releases/cairo-1.12.4.tar.xz.sha1.asc">http://cairographics.org/releases/cairo-1.12.4.tar.xz.sha1.asc</a>
(signed by Chris Wilson)
Additionally, a git clone of the source tree:
git clone git://git.cairographics.org/git/cairo
will include a signed 1.12.4 tag which points to a commit named:
117abd85ac7ff41e484fe0d98f16704ec30abd09
which can be verified with:
git verify-tag 1.12.4
and can be checked out with a command such as:
git checkout -b build 1.12.4
Release 1.12.4 (2012-10-05 Chris Wilson <a class="moz-txt-link-rfc2396E" href="mailto:chris@chris-wilson.co.uk"><chris@chris-wilson.co.uk></a>)
===================================================================
More bugs, and more importantly, more fixes. On the cairo-gl side, we
have refinements to the MSAA compositor which enables hardware
acceleration of comparitively low-quality antialiasing - which is useful
in animations and on very high density screens. For cairo-xlib, we have
finally enabled SHM transport for image transfers to and from the X
server. A long standing required feature, SHM transport offers a notable
reduction in rendering latency by reducing the number of copies
required to upload image data - given hardware and driver support,
cairo-xlib can now perform zero copy uploads onto the GPU. And as usual
Adrian Johnson has been very busy fixing many different corner cases in
cairo-pdf, impoving opacity groups and font subsetting. Last, but not
least, for cairo-image Søren Sandmann Pedersen added support for
rendering glyphs to pixman and using that from within cairo. The new
glyph rendering facility reduces the overhead for setting up the
compositing operation, improving glyph thoughput for the image backend
by a factor of about 4. And before he did so, he also fixed up a few
bugs in the existing glyph rendering code. So many thanks to Andrea
Canciani, Adrian Johnson, Chuanbo Weng, Dongyeon Kim, Henry Song, Martin
Robinson, Søren Sandmann Pedersen and Uli Schlachter for their
contributions, finding and fixing bugs.
-Chris
Bug fixes
---------
Interior boxes were being dropped when amalgamating regions during
tesselation.
<a class="moz-txt-link-freetext" href="https://bugs.freedesktop.org/show_bug.cgi?id=49446">https://bugs.freedesktop.org/show_bug.cgi?id=49446</a>
Allow building without gtk-doc installed
Invalid edge generation whilst reducing complex polygons.
<a class="moz-txt-link-freetext" href="https://bugs.freedesktop.org/show_bug.cgi?id=50852">https://bugs.freedesktop.org/show_bug.cgi?id=50852</a>
Stroking around tight cusps
Use locale correct formats for reading font subsetting and valid
buffers.
<a class="moz-txt-link-freetext" href="https://bugs.freedesktop.org/show_bug.cgi?id=51443">https://bugs.freedesktop.org/show_bug.cgi?id=51443</a>
Ensure that the type1 subset includes all the glyph encodings
<a class="moz-txt-link-freetext" href="https://bugs.freedesktop.org/show_bug.cgi?id=53040">https://bugs.freedesktop.org/show_bug.cgi?id=53040</a>
Upload the whole source for a repeating pattern.
<a class="moz-txt-link-freetext" href="https://bugs.freedesktop.org/show_bug.cgi?id=51910">https://bugs.freedesktop.org/show_bug.cgi?id=51910</a>
Fix damage tracking to handle continuation chunks corectly and so
prevent crashes on win32.
<a class="moz-txt-link-freetext" href="https://bugs.freedesktop.org/show_bug.cgi?id=53384">https://bugs.freedesktop.org/show_bug.cgi?id=53384</a>
Avoid emitting miter joins for degenerate line segments
<a class="moz-txt-link-freetext" href="https://bugzilla.mozilla.org/show_bug.cgi?id=407107">https://bugzilla.mozilla.org/show_bug.cgi?id=407107</a>
Convert the relative path semgents into the backend coordinates
and then back again to user coordinates (cairo_copy_path,
cairo_append_path)
<a class="moz-txt-link-freetext" href="https://bugs.freedesktop.org/show_bug.cgi?id=54732">https://bugs.freedesktop.org/show_bug.cgi?id=54732</a>
Fix extents computations for a degenerate path consisting only of a
move-to
<a class="moz-txt-link-freetext" href="https://bugs.freedesktop.org/show_bug.cgi?id=54549">https://bugs.freedesktop.org/show_bug.cgi?id=54549</a>
Prevent crashing on a degenerate project edge after polygon
intersection
<a class="moz-txt-link-freetext" href="https://bugs.freedesktop.org/show_bug.cgi?id=54822">https://bugs.freedesktop.org/show_bug.cgi?id=54822</a>
List of all changes since 1.12.2
--------------------------------
Adrian Johnson (12):
pdf: check if EXTEND_PAD group can be painted with EXTEND_NONE
pdf: fix smask gradient bbox
ps: check if EXTEND_PAD group can be painted with EXTEND_NONE
pdf: merge _emit_recording_surface and _emit_recording_subsurface into the one function
pdf: Don't use extents when acquiring a RASTER_SOURCE pattern
pdf: fix the offset of padded images
cff-subsetting: Ignore charset for non cid fonts
cff: convert '.' to locale specific decimal point before using sscanf
cff: use correct size for buffer
cff: initialise variable to prevent valgrind warning
cff subsetting: widths can be floating point
type1 subset: ensure encoding includes all glyphs
Alexandros Frantzis (2):
gl: Simplify GL wrap parameter setting code
gl: Provide a shader implementation of repeat wrap modes
Andrea Canciani (15):
build: Allow autogen-eration on systems without GTK-doc
build: Do not replace existing files
png: Implement conversion of CAIRO_FORMAT_RGB30 to string
surface: Define private map/unmap functions
surface: Make map_to_image return cairo_image_surface_t*
surface: Make backend-specific map/unmap functions symmetric
surface: Only use non-NULL extents for internal mapping
surface: Use the internal map/unmap
quartz: Silence warning
quartz: Mark surfaces created clear as is_clear
quartz: Provide a valid implementation of map_to_image
quart-image: Fix compilation
xcb: Fix make check
quartz: Use the correct transform when replaying recording surfaces
test: Add degenerate closed path case to get-path-extents
Behdad Esfahbod (2):
[util/malloc-stats] Use tighter spacing.
Fix malloc-stats for newer glibc
Chris Wilson (129):
version: Post release bump to 1.12.3
snapshot: Hold a reference to target whilst querying
snapshot: Avoid triggering assertion for grabbing the target during destroy
Split finish into multiple stages
damage: Avoid freeing the NIL error object
damage: Prevent accumulating damage to an error object
damage: Prevent reducing an error object
gl: Reject SOURCE + mask in composite_boxes()
test: Fix tighten-bounds reference images
spans-compositor: Handle unaligned unbounded boxes
spans-compositor: Add tracepoints for debugging
traps,spans-compositor: Avoid mistreating unaligned clips as aligned
spans: Only fallback for a clipmask if unbounded
clip: Apply clip boxes to the clip surface
arc: Use user endpoint for final step
spans: Debug input paths and polygons
stroke: Don't drop clockwise==0 lines
image: Tidy lerp8x4
win32: Fix return value for cairo_time_get
wideint: Fix compilation failure for bare use of uint64_t for !HAVE_UINT64_T
test: Fix leak from xcb-snapshort-assert
gl: Replace vbo with static allocation and immediate arrays
test: Exercise rectangular bo bug
bo-rectangular: Emit subsummed boxes for overlapping edges
test: Refresh unbounded-operator
test/record90: Rotate the reference so that it is wholly visible
test: Increase surface size for get-path-extents
gl: Use core GL_STENCIL8_DEPTH24 for gl_flavor=desktop
image: Propagate errors from clone_subimage
surface: Kill imagesurf temporary variable
gl: Do no access ctx after release during map-to-image
test: Restore bug-seams reference
image: Upconvert glyphs through a WHITE source when adding to the glyph mask
image: silence make check
surface: Eliminate PLT entries for map-to-image
gl: Add missing cairo-private to _cairo_gl_composite_with_clip
surface: replace map-to-image clone's use of user_data with parent pointer
Erradicate internal use of cairo_surface_get_content()
Erradicate internal use of cairo_surface_get_type()
composite-rectangles,scaled-font: Use accurate extents if the font is broken
scaled-font: Take lock around disposing of an empty page upon alloc failure
spans-compositor: After polygon intersection the fill rule is always non-zero
tor-scan-converter: Always recompute min-height following edge removal
polygon-reduce: Reduce broken stopped-edge continuation
image: Fix up glyphs compositing
gl: Trim the glyph mask to the operation extents
test: Exercise bug in joining together spline segments around cusps
stroke: Use round-joins near inflection points of splines
stroke: Skip inserting a round-join if within tolerance
ft: Indentation fixup for _get_bitmap_surface()
boilerplate/gl: Round fractional window sizes up
test: Add a simple exercise for raster sampling of subpixel geometry
test: Add example from bug-51910
xlib: If a sample accesses outside of a repeating image, upload it all
gl: Add the compile fix that I forgot to add to the previous commit
perf/chart: Render a solid bar if the column is too narrow for the gradient
gl: Fallback for copy_boxes if src/dst do not belong to the same device
trace: Fix propagation of CAIRO_TRACE_OUTDIR to children
egl: s/EGL_KHR_surfaceless_opengl/EGL_KHR_surfaceless_context/
gl: Remove unused variable
xlib: Silence compiler warning
gl: Use a wide texture ramp to emulate a linear step function
gl: Fudge gradient color generation to handle multiple stops at 0
damage: Update tail pointer after allocating new chunk
skia: Compile fix for changes to map-to-image
image: Temporarily resurrect the old non-pixman glyph compositor
xlib: Implement SHM fallbacks and fast upload paths
tor22: Add a simple method to quickly compute coverage (with saturation)
configure: Restore previous pixman required version of 0.22.0
xlib/shm: Fix up the shrinking of the priority queue
xcb: Migrate to the common mempool implementation
xlib/shm: Propagate the last-request to the synchronous create
xlib/shm: Limit use of the impromptu fallback pixmap for uploads
xlib/shm: Use an impromptu upload ShmSegment
xlib/shm: Clear the similar image surface
xlib: Only use CopyArea if the ShmPixmap and destination are the same depth
xlib/shm: Avoid using a synchronous ShmCreatePixmap if evading the readback
xlib/shm: Wrap the detection of shm with locking
xlib/shm: Fix runtime checking of has-shm-pixmaps for !shm case
xlib/shm: Mark the ShmPixmap as active following an upload flush
xlib: Drop the false optimisation of using a potentially busy shm upload pixmap
ft: Only use a specified font filename if its accessible
xlib: Move the shm cleanup from CloseDisplay to finish()
tests: Add outline-tolerance
stroker: Avoid emitting a miter join for across an elided degenerate segment
ft: Report FILE_NOT_FOUND if creating a font with a specified nonexistent file
cairo-script: Attempt to fallback for unresolved patterns
xlib/shm: Use a genuine event rather than an open-ended request
xlib/shm: Only check if we are expecting an event
xlib/shm: Reduce the frequency at which we emit events
xlib/shm: Add missing release of the display after GetImage
compositor: Skip invisible strokes
stroke: Skip spline evaluation when stroking to a polygon
pen: Use bisection to speed up vertex finding
stroke: Use new pen vertex range finders
stroke: Precompute the line half-width
stroke: Convert a very small round-join into a miter
stroke: Convert fallback stroker to new pen vertex finder
stroke: Compute bounds for fallback stroker (typically dashing)
bentley-ottman: Remove a few superfluous status propagation
bentley-ottmann: Only check the pairs of coordinates for equality.
bentley-ottmann: hint that the insertion compare function should be inlined
bentley-ottmann: Cache the most recent edge colinearity check
xlib/shm: Masquerade as an ordinary ShmCompletionEvent
default-context: Convert the relative path segments into the backend coordinates
path: Update last_move_point after move-to
image: Check for an error surface before dereferencing the backend
xlib/shm: Explicitly release shm surface if we do not own the pixmap
context: Add missing functions to transform between user and backend coordinates
path: Convert from backend coordinates back into user coordinates
xcb: Always flush the fallback damage to foreign drawables
xlib: Fix regression in cairo_xlib_surface_set_drawable()
xlib: Explicitly discard the fallback shm pixmap upon user modification
xlib: Force the fallback flush before updating the external Drawable
xlib: Do not call _cairo_xlib_surface_flush directly
xlib: Destroy the fallback damage along with the fallback surface
test: Add clip-disjoint-quad
polygon-intersect: Exclude non-overlapping clip boxes from consideration
spans-compositor: Use the tight clip-boxes for polygon construction
composite-rectangles: Update unbounded (clip extents) after reducing clip
test: Refresh reference image for clip-disjoint-quad
spans-compositor: Remove polygon limits after construction
tor: Fudge the edge if it is projected into a point
recording: Perform an explicit during snapshot
stroke: Remove redundant code for computing culling extents
test: Refresh reference images for slight alteration of curves
xlib/shm: Discard SHM surfaces upon CloseDisplay
win32: Compile fix for mismatched surface types
1.12.4 release
Chuanbo Weng (7):
gl: fix the translate value in copy_boxes.
gl: Convert CLEAR to DEST_OUT when there's a mask for composite_boxes.
gl: Do correct translation and lerp in gl-traps-compositor.
gl: Set correct clip rectangle for non-texture destination surfaces
gl: Set correct operation extents.
gl: Create a new texture surface if the source surface type is gl-window
gl: copy_boxes() does not support copying from a non-texture source
Daniel Stone (1):
Fix broken XRender ARGB32 formats
Dongyeon Kim (1):
gl: Set is_clear flag to FALSE after map_to_image
Henry (Yu) Song (8):
gl/msaa: Prevent stroke overlap
gl/msaa: Support for texture sources
gl/msaa: Support for masking
gl/msaa: Add support for unbounded operators
gl/msaa: Add ARB multisampling support
gl/msaa: Implement paint via masking
gl/msaa: Use unsigned short to build the index array
gl/msaa: Support the OpenGLES EXT multisampling extension
Henry (Yu) Song - SISA (2):
clip: Transform clip path in _cairo_clip_intersect_clip_path_transformed()
quartz: Never acquire recording surfaces
Henry Song (5):
subsurface: Disable subsurface-set-snapshot as it creates a ref cycle
gl: generate correct gradient color texture
gl: Destroy glyph cache surface during finish
gl: translate proper matrix depending up type of gl_operand
gl: use absolute value for color difference between gradient stops
Martin Robinson (9):
gl/msaa: Support for non-texture surfaces
gl/msaa: Wait to clip until compositing begins
gl/msaa: Implement glyph rendering
gl/msaa: Lazily flush the context
gl/msaa: Improve fallback detection
gl: Simplify switching between primitive types
gl: Fix compilation failure for flush cleanup.
gl: Remove the shader language version abstraction
gl: Add a non-thread-aware mode for GL devices
Søren Sandmann Pedersen (4):
Use pixman glyphs
Revert "Use pixman glyphs"
image: Fix bugs related to glyph mask creation
Use the new pixman_glyph_cache_t API that will be in pixman 0.28.0
Uli Schlachter (18):
Remove some unused functions
Remove some dead code
check-doc-syntax: Make this work again
check-doc-syntax: Find duplicate "Since:" tags
c_surface_set_mime_data: Remove duplicate "Since"
xcb: Handle recording surfaces differently
xcb: Correctly handle a recording surface's extents
Fix make check
Remove an unimplemented function declaration
xcb: Fix a warn_unused_result warning
xcb: Remove unimplemented cairo compositor
xcb: Switch to compositor architecture
xcb: Verify extension support before sending
xcb: Check the right flag for FillRectangles
xcb: Check if traps are supported before using them
xcb: Add a missing check for FillRectangles
surface: Check reference count right before free
mark_dirty: Check surface status
Weng Xuetian (1):
xlib: Reset fallback counter when discarding the fallback
Yuanhan Liu (2):
gl: use _cairo_gl_operand_copy to fix unblanced reference count
configure.ac: remove annoying change of INSTALL file
What is cairo
=============
Cairo is a 2D graphics library with support for multiple output
devices. Currently supported output targets include the X Window
System (via both Xlib and XCB), quartz, win32, and image buffers,
as well as PDF, PostScript, and SVG file output. Experimental backends
include OpenGL, BeOS, OS/2, and DirectFB.
Cairo is designed to produce consistent output on all output media
while taking advantage of display hardware acceleration when available
(for example, through the X Render Extension).
The cairo API provides operations similar to the drawing operators of
PostScript and PDF. Operations in cairo include stroking and filling
cubic Bézier splines, transforming and compositing translucent images,
and antialiased text rendering. All drawing operations can be
transformed by any affine transformation (scale, rotation, shear,
etc.).
Cairo has been designed to let you draw anything you want in a modern
2D graphical user interface. At the same time, the cairo API has been
designed to be as fun and easy to learn as possible. If you're not
having fun while programming with cairo, then we have failed
somewhere---let us know and we'll try to fix it next time around.
Cairo is free software and is available to be redistributed and/or
modified under the terms of either the GNU Lesser General Public
License (LGPL) version 2.1 or the Mozilla Public License (MPL) version
1.1.
Where to get more information about cairo
=========================================
The primary source of information about cairo is:
<a class="moz-txt-link-freetext" href="http://cairographics.org/">http://cairographics.org/</a>
The latest versions of cairo can always be found at:
<a class="moz-txt-link-freetext" href="http://cairographics.org/download">http://cairographics.org/download</a>
Documentation on using cairo and frequently-asked questions:
<a class="moz-txt-link-freetext" href="http://cairographics.org/documentation">http://cairographics.org/documentation</a>
<a class="moz-txt-link-freetext" href="http://cairographics.org/FAQ">http://cairographics.org/FAQ</a>
Mailing lists for contacting cairo users and developers:
<a class="moz-txt-link-freetext" href="http://cairographics.org/lists">http://cairographics.org/lists</a>
Roadmap and unscheduled things to do, (please feel free to help out):
<a class="moz-txt-link-freetext" href="http://cairographics.org/roadmap">http://cairographics.org/roadmap</a>
<a class="moz-txt-link-freetext" href="http://cairographics.org/todo">http://cairographics.org/todo</a>
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