Release Cogl 1.11.6 (snapshot)

[Robert Bragg <robert sixbynine org>]

Hi everyone,

A new Cogl snapshot (1.11.6) is now available:

LATEST NEWS
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Cogl 1.11.6                                                        2012-09-17

  • List of changes since Cogl 1.11.4

  » Support latest libgbm api
  » Improve error handling for cogl_texture_2d_new_from_foreign
  » Avoid referencing contexts internally so Android
    applications can reliably destroy the resources of a context without
    us needing to introduce api to break internal circular references.
  » More work to reduce our dependence on a global context internally.
  » Recognize the latest Mesa GL vendor strings and the "Software
    Rasterizer" renderer string.
  » Improved cogl-gles2 support by not depending on drivers allowing
    multiple vertex shaders in one program which isn't actually meant
    to be supported in GLES 2.0 anyway. (We were lucky before because
    Mesa happened to allow this but it doesn't work with other vendor
    drivers.)

  • List of bugs fixed since Cogl 1.11.4

    #683414 - memory corruption when freeing layer cache
    #683818 - Need to pick up new Mesa strings
    #683083 - Fix textures[] index

Many thanks to:

  Robert Bragg
  Neil Roberts
  Alban Browaeys
  Alexander Larsson
  Bruce Cowan
  Daniel Stone
  Gabor Kelemen
  Ihar Hrachyshka
  Marek Černocký
  Piotr Drąg

FETCHING THE RELEASE
-------------------------------------------------------------------------------

Tarballs can be downloaded from:

  http://download.gnome.org/sources/cogl/1.11/

SHA256 Checksum:

fc583a296d96aef9c4f5198f3ec0c446f400bc337e646fcf3ddce6667f795906
cogl-1.11.6.tar.bz2

Additionally, a git clone of the source tree:
  git clone git://git.gnome.org/cogl

will include a signed 1.11.6 tag which points to a commit named:
  3aa7bdaf49862d358bd4be4fd403436187371d4c

which can be verified with:
  git verify-tag 1.11.6

and can be checked out with a command such as:
  git checkout -b build 1.11.6

DESCRIPTION
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Cogl is a small open source library for using 3D graphics hardware for
rendering. The API departs from the flat state machine style of OpenGL and is
designed to make it easy to write orthogonal components that can render without
stepping on each others toes.

As well as aiming for a nice API, we think having a single library as opposed
to an API specification like OpenGL has a few advantages too; like being
able to paper over the inconsistencies/bugs of different OpenGL
implementations in a centralized place, not to mention the myriad of OpenGL
extensions. It also means we are in a better position to provide utility
APIs that help software developers since they only need to be implemented
once and there is no risk of inconsistency between implementations.

Having other backends, besides OpenGL, such as drm, Gallium or D3D are
options we are interested in for the future.


REQUIREMENTS
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Cogl currently only requires:

  • GLib ≥ 2.28.0
  • OpenGL ≥ 1.3 (or 1.2 + multitexturing), or OpenGL ES 2.0 (or 1.1)
  • GLX, AGL, WGL or an EGL implementation

Cogl also has optional dependencies:

  • GDK-Pixbuf ≥ 2.0
     - for image loading
  • Cairo ≥ 1.10
     - for debugging texture atlasing (debug builds only)

The optional Cogl Pango library requires:
  • Cairo ≥ 1.10
  • PangoCairo ≥ 1.20

On X11, Cogl depends on the following extensions

  • XComposite ≥ 0.4
  • XDamage
  • XExt
  • XFixes ≥ 3

When running with OpenGL, Cogl requires at least version 1.3
or 1.2 with the multitexturing extension. However to build Cogl
you will need the latest GL headers which can be obtained from:

  http://www.khronos.org

If you are building the API reference you will also need:

  • GTK-Doc ≥ 1.13

If you are building the additional documentation you will also need:

  • xsltproc
  • jw (optional, for generating PDFs)

If you are building the Introspection data you will also need:

  • GObject-Introspection ≥ 0.9.5

GObject-Introspection is available from:

  git://git.gnome.org/gobject-introspection

If you want support for profiling Cogl you will also need:

  • UProf ≥ 0.3

UProf is available from:

  git://github.com/rib/UProf.git



DOCUMENTATION
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The 1.x stable API is documented here:
  http://developer.gnome.org/cogl/stable/
The 1.x development API is documented here:
  http://developer.gnome.org/cogl/1.11

The experimental 2.0 API is currently not hosted online but can be built
by passing the --enable-gtk-doc option to ./configure when building.


RELEASE NOTES
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  - This is a development snapshot release so there are not API or ABI stability
    guarantees at this point for new APIs since the last stable release.

  - This Cogl release exports a 1.x API (For third-party Clutter
    developers to write custom actors) and an experimental 2.0 API which
    allows standalone application development.

  - Internally Clutter depends on the Cogl 2.0 experimental API so we maintain
    runtime compatibility between the 1.x API and experimental 2.0 APIs, which
    means developers can mix-and-match their use of the APIs in the same
    process.  API selection is done per-file by including a line like: '#define
    COGL_ENABLE_EXPERIMENTAL_2_0_API' before including cogl.h or clutter.h.

  - We recommend using the 2.0 API if you don't mind updating your code once in
    a while as this API evolves and stabilizes. We promise not to break the 2.0
    API during a 1.x stable cycle and hope that will encourage people to
    experiment with it and give critical feedback! For example after releasing
    1.8, the 2.0 API will be stable for 1.8.1, 1.8.2, 1.8.3 etc, but may update
    for 1.9/1.10.

  - Because we export the 1.x and 2.0 APIs from one libcogl.so the library
    versioning, and thus ABI, can only be considered as stable as our 2.0 API -
    i.e. during a stable release 1.x cycle.

  - Please report bugs using the Cogl Bugzilla product, at:
    http://bugzilla.gnome.org/enter_bug.cgi?product=cogl