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Release Cogl 1.12.2 (release)

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Posted 12 January 2013 - 04:35 PM

Good news, everyone!

A new Cogl release (1.12.2) is now available:


Cogl 1.12.2 2013-01-04

• List of changes since Cogl 1.12.0

» Lots of MSVC build updates
» Fix GL_ARB_shader_objects terminator mitigating potential crash
» Fix to only allow CoglGLES2 context creation with GLES2 driver
» Use right context when pushing a CoglGLES2 context to an onscreen
» Port to new Wayland 1.0 protocol
» Don't set SDL_GL_DOUBLEBUFFER when the swap chain has no pref

• Bugzilla bugs closed since Cogl 1.12.0

#682071 - MSVC: Link to SDL when apps are built
#684917 - winsys-glx: Don'T attempt to query the vblank counter when
using indirect rendering
#689850 - [PATCH] Fix call to BlendFuncSeparate

Many thanks to:

Chun-wei Fan
Neil Roberts
Robert Bragg
Andika Triwidada
Adam Jackson
Alexander Shopov
Aurimas Černius
Ihar Hrachyshka
Marek Černocký
Milo Casagrande
Rafael Ferreira
Rob Bradford
RÅ«dolfs Mazurs
Tom Tryfonidis
Unticha Pramgoed
Мирослав Николић


Tarballs can be downloaded from:


SHA256 Checksum:


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

will include a signed 1.12.2 tag which points to a commit named:

which can be verified with:
git verify-tag 1.12.2

and can be checked out with a command such as:
git checkout -b build 1.12.2


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.


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:


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:


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

• UProf ≥ 0.3

UProf is available from:



The 1.x stable API is documented here:
The 1.x development API is documented here:

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.

- 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 up[censored] 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:

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