This is the mail archive of the
mailing list for the Cygwin/XFree86 project.
Updated: mesa-10.2.4-1, mesa-demos-8.2.0-1
- From: Yaakov Selkowitz <yselkowitz at cygwin dot com>
- To: cygwin-xfree-announce at cygwin dot com
- Date: Wed, 23 Jul 2014 11:08:20 -0500
- Subject: Updated: mesa-10.2.4-1, mesa-demos-8.2.0-1
- Authentication-results: sourceware.org; auth=none
The following packages have been updated in the Cygwin distribution:
Mesa is an open-source implementation of the OpenGL specification, a
system for rendering interactive 3D graphics.
This is an update to the latest upstream release, with a number of new
Until now, OpenGL has been handled solely with indirect rendering,
meaning that libGL passes calls over the GLX protocol to the server,
which then handles the rendering with hardware acceleration in
multiwindow/-wgl mode, or software rendering (swrast) in desktop/-nowgl
mode. The major drawback of this method is that the GLX protocol only
supports OpenGL 1.4, anything which requires 2.0 or newer (such as GLSL)
This release adds *direct* rendering support, where libGL handles the
rendering itself via DRI drivers. This provides complete OpenGL 3.0 and
GLSL 1.30 support (along with numerous newer extensions), allowing much
more OpenGL software to render correctly. The only drawback at the
moment is that only the llvmpipe DRI driver is current available,
meaning that rendering is done in software and passed to the server over
the X11 protocol, and therefore more CPU intensive.
As this is a new feature, the previous behaviour of indirect rendering
is still the default. In order to enable direct rendering (and hence
OpenGL 3.0), the following steps are required:
1) If using -multiwindow, the -nowgl flag must be added.
2) Add the following to your ~/.startxwinrc, ~/.xinitrc, or ~/.bashrc,
or run this manually in the shell from which you will launch OpenGL
(tcsh users need to use unsetenv instead of unset, of course.)
Other feature changes:
* llvmpipe uses LLVM 3.4 and is now available on x86_64.
* GLES support has been added.
* mesa-demos includes EGL/GLES utilities.
Many thanks to Jon TURNEY for his continued work on OpenGL support which
led to these new features.
CYGWIN-XFREE-ANNOUNCE UNSUBSCRIBE INFO
If you want to unsubscribe from the cygwin-xfree-announce mailing list,
please use the automated form at:
If this does not work, then look at the "List-Unsubscribe: " tag in the
email header of this message. Send email to the address specified
there. It will be in the format:
If you need more information on unsubscribing, start reading here:
Please read *all* of the information on unsubscribing that is available
starting at this URL.