From a0bf6d25b5b68c897d63580d1ca9ee182f04cce1 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 23 Mar 2012 19:33:07 +0000 Subject: version: bump for 1.12.0 release! --- NEWS | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ cairo-version.h | 4 +-- 2 files changed, 82 insertions(+), 2 deletions(-) diff --git a/NEWS b/NEWS index 5d22053a3..42dee908f 100644 --- a/NEWS +++ b/NEWS @@ -1,3 +1,83 @@ +Release 1.12.0 (2012-03-23 Chris Wilson ) +=================================================================== +It's taken over 18 months, but the wait is finally over. A new cairo release! +We are pleased to annouce a new stable release of Cairo that brings many +new features and performance improvements, all whilst maintaining +compatibility with cairo-1.0 and all releases since. We recommend anyone +using a previous release of Cairo to upgrade to 1.12.0. + +The major feature of this release is the introduction of a new procedural +pattern; the mesh gradient. This, albeit complex, gradient is constructed +from a set of cubic Bezier patches and is a superset of all other gradient +surfaces which allows for the construction of incredibily detailed patterns. +In PDF parlance, the mesh gradient corresponds with type 7 patterns. Many +thanks to Andrea Canciani for bringing this to Cairo, and for his work on +making gradient handling robust. + +Not content with just adding another procedural pattern, Cairo 1.12 also +adds new API to create a callback pattern, +cairo_pattern_create_raster_source, that allows the application to +provide the pixel data for the region of interest at the time of +rendering. This can be used for instance, by an application to decode +compressed images on demand and to keep a cache of those decompressed +images, independently of Cairo. When combined with the recording +surface, it should form a useful basis for a deferred renderer. + +With the release of cairo-1.12, we also introduce a new supported +backend for interoperating with X using XCB. Uli Schlachter, also +maintainer of awesome and contributor to libxcb, has volunteered to +maintain cairo-xcb for us. Thanks Uli! + +For cairo-1.12, we have also added some common API to address any +surface as an image and so allow direct modification of the raster data. +Previously, only the Quartz and Win32 backends supported a very narrow +interface to allow for efficient pixel upload. Now with +cairo_surface_create_similar_image, cairo_surface_map_to_image, and +cairo_surface_unmap_image, Cairo exports a consistent method for +treating those surfaces as an image and so allow modification inplace. +These are the same routines used internally, and should support +efficient transfer or direct mapping of the target surfaces as +applicable. + +Another focus over the past year has been to address many performance +issues, without sacrificing the composition model. To accomplish the +goal, once again the rasterisation pipeline was overhauled and made +explicit, giving the backends the freedom to implement their own +specific pipeline whilst also providing a library of common routines +from which to build the pipeline. For instance, this allows the image +backend and the gl backend to composite scan line primitives inplace, +and to then implement custom fallbacks to catch the corner cases that do +not map onto their fastest paths. Similarly, this allows for the Xlib +backend to implement trapezoidation without compromising the other +backends, yet still allow for the pipeline to be used elsewhere for +testing and fallbacks. Clipping was once again overhauled, so that the +common cases for the raster pipelines could be captured and processed +with fast paths with the emphasis on performing geometric clipping to +reduce the frequency of using multi-pass clipmasks. Stroking was made +faster, both by providing specialised fast-paths for simple, yet frequent, +cases (such as stroking around a rectangle) and by reducing the number +of edges generated by the general stroker. + +As part of the focus on performance, Cairo 1.12 introduces some +antialias hints (NONE,FAST, GOOD, BEST) that are interpolated by the +raserisers to fine tune their performance versus quality. Cairo 1.12 +also introduces a new observation architecture, +cairo_surface_observer_t, which can be used to analyse the amount of +time consumed by drawing commands and help identify inefficiencies in +both Cairo and the application. + +Last, but by no means least, the OpenGL backend has seen significant +work including the port to GLESv2 and the exploitation of advanced +hardware features. Interesting times. + +As always, I would like to thank everyone who contributed to Cairo, +not only through writing code, but also submitting documentation, bug +reports, suggestions and generally having fun with Cairo! In particular +though this release could not have happened without the efforts of +Adrian Johnson, Alexandros Frantiz, Andrea Canicani, Martin Robinson, +Nis Martensen, and Uli Schlachter. Thanks. +-Chris + Snapshot 1.11.4 (2012-13-12) ============================ The cairo community is pleased to finally announce the long aniticpated diff --git a/cairo-version.h b/cairo-version.h index a7725532e..1a38e6efd 100644 --- a/cairo-version.h +++ b/cairo-version.h @@ -2,7 +2,7 @@ #define CAIRO_VERSION_H #define CAIRO_VERSION_MAJOR 1 -#define CAIRO_VERSION_MINOR 11 -#define CAIRO_VERSION_MICRO 5 +#define CAIRO_VERSION_MINOR 12 +#define CAIRO_VERSION_MICRO 0 #endif -- cgit v1.2.3