271 lines
12 KiB
Plaintext
271 lines
12 KiB
Plaintext
OSG News (most significant items from ChangeLog)
|
|
================================================
|
|
|
|
10th February 2002 - osg-0.8.44.tar.gz
|
|
|
|
>>> Support added for Mac OSX, Cygwin and MinGW, and new TerraPage loader.
|
|
|
|
The major item for this release is the completion of the Mac OSX port,
|
|
thanks to Phil Atkin and others for making this happen.
|
|
|
|
Also added to support for Cygwin and MinGW builds which gives Windows
|
|
users a free and robust alternative to the Visual C++, which we
|
|
have Norman Vine to thank.
|
|
|
|
Funtionality wise there has been a great deal of work behind the scenes
|
|
putting in place a flexible and extensible framework for handling
|
|
transform nodes, users can now extend the osg::Transform node through
|
|
subclassing or via callbacks. This work will underpin future work
|
|
on moving camera setup into the scene graph, and environmental effects
|
|
such as cloud layers, ground planes, stars and earth sky implementations
|
|
which are planned for the next release.
|
|
|
|
Callbacks and virtual methods have also been added to the osg::LOD &
|
|
osg::Billboard to allow users to customize their behavior. Draw
|
|
callbacks have also been added to allow customization of osg::Drawables
|
|
at runtime.
|
|
|
|
The Open Flight .flt loader has undergone a number of improvements
|
|
including support for instancing and billboards.
|
|
|
|
Support for the clone operation on osg::Object's has been expanded
|
|
to allow cloneType() - a simple clone an blank object of the same type,
|
|
and clone(CopyOp&) where CopyOp is a functor which allows users to
|
|
specify the deep copy vs shallow copying of object data.
|
|
|
|
|
|
2nd January 2002 - osg-0.8.43.tar.gz
|
|
|
|
>>> Support for TrueType text, Stereo out of the box, and much more.
|
|
|
|
Since the last release the OSG has moved to CVS based developments so
|
|
many users will have seen gradual increments in functionality and changes
|
|
to the API. Whereas a the leap from 0.8.42 to 0.8.43 is actually quite
|
|
significant is likely to require code changes as several significant parts
|
|
of the API have evolved to a more mature state.
|
|
|
|
The most significant new functionality is the addition of the osgText
|
|
library which provides support for true type font rendering, as textured,
|
|
polygonal, pixmap, bitmap and 3D fonts.
|
|
|
|
We now have new osg::Matrix implementation which cleans up its interface.
|
|
Also all angular paramters are now based on radians rather than degrees
|
|
as before (and as in Performer), this has been done to be more consistent
|
|
with the basic trignometric functions and standard maths conventions.
|
|
|
|
Scene graph optimization has been added which can boost performance
|
|
on some database by as much as an order of magnititude, this is
|
|
particularily noticable in .flt based databases. Display list performance
|
|
has also been boosted on NVidia based machines thanks to changing the
|
|
compilation and execution of display list into two seperate operations.
|
|
|
|
App callbacks are now supported on all Nodes, and there now a proper
|
|
app traversal which can be used to animate the scene.
|
|
|
|
Stereo support has been added into the osgUtil::SceneView which allows
|
|
quad buffered/anaglyphic stereo to enabled easily for almost all OSG
|
|
applications without code modifications - simple set environmental
|
|
variable or pass in appropriate arguments and your app will render in
|
|
stereo!
|
|
|
|
src/Demos/osgcluster has been added to demonstrate how easy it is
|
|
to set up a graphics cluster across a standard networked PC's.
|
|
|
|
There have been many minor code changes to fix bugs and address
|
|
performance bottlenecks or to improve extensibility was, representing
|
|
a significant step towards API maturity and a beta release which is
|
|
now not far away.
|
|
|
|
|
|
9th August 2001 - osg-0.8.42.tar.gz
|
|
|
|
>>> New osgWX library for integration of OSG with wxWindows apps.
|
|
|
|
This release sees a relatively minor number of enhancements over
|
|
0.8.41, the most significant being the new osgWX library and wxsgv
|
|
demo written by Ben Discoe.
|
|
|
|
Also from Brede Johansen in this release is the improvements in support for older
|
|
.flt (Open Flight) files such versions 12 & 13. Previously only version
|
|
15.6 files had been tested and developed to.
|
|
|
|
Last but by no means least, several bug fixes related to view frustum
|
|
culling have been made.
|
|
|
|
|
|
25th July 2001 - osg-0.8.41.tar.gz
|
|
|
|
>>> Support added for multi-pass and multi-stage rendering including Impostors.
|
|
|
|
The key feature developed is a highly flexible framework for multi-pass and
|
|
multi-stage rendering techniques. Unlike most scene graphs and games
|
|
engines the OSG has as dynamic framework which automatically configures
|
|
itself at runtime.
|
|
|
|
Building ontop of the new framework's multi-stage rendering capabilities,
|
|
support for Impostors (hirachical image caching) has been integrated into
|
|
the core scene graph library making extremely easy to take advantage of
|
|
this advanced rendering techinque - normally only seen in research papers.
|
|
Check out osgimpostor demo to see how easy it is to add osg::Impostor
|
|
nodes to your own models. Impostors are particularily effective are
|
|
reducing scene complexity whilest minimizing the visual impact, making it
|
|
ideal for scenes with large numbers of complex objects such as a city
|
|
scene, or a dense forest.
|
|
|
|
Taking advantage of the new framework's multi-pass rendering capabilities
|
|
is osgreflect demo which illustrates how to achieve planar relfections
|
|
using the stencil buffer and multi-pass rendering.
|
|
|
|
The cool thing about both the osgreflect and osgimpostor demos is that
|
|
there is no hardwiring to achieve the results, the scene graph stores
|
|
all the information neccessary to specify the number and type of rendering
|
|
passes, and the framework handles the rest behind the scenes. This also
|
|
makes it very easy to add these advanced rendering techinques to your
|
|
own applications as everything is cleanly encapsulated with
|
|
osgUtil::SceneView.
|
|
|
|
New loaders have been added to support .lwo (Light Wave), .obj
|
|
(Alias Wavefront) and .dw (Design Workshop) 3D file formats making it
|
|
even easier to compose your own worlds from models sourced from the
|
|
web or your own.
|
|
|
|
osg::Camera has been totally revamped and now supports asymetric
|
|
and othographics projections in addition to the symetrical perspective
|
|
projections.
|
|
|
|
And finally, support for texture subloading has been added to osg::Texture
|
|
and osg::Image. This allows textures to be updated dynamically, and
|
|
has already been used for mpeg video playback!
|
|
|
|
|
|
19th May 2001 - osg-0.8.40.tar.gz
|
|
|
|
>>> Project lead, Robert Osfield, makes full-time commitment to OSG.
|
|
|
|
This is the first full release since project lead, Robert Osfield, made
|
|
a move to pursue the OSG's development full-time. This commitment has
|
|
been made to bring the API rapidly towards maturity, and to provide
|
|
high quality support and consultancy services. Please contact
|
|
robert@openscenegraph.com if you have any queries.
|
|
|
|
This release marks a significant step forward in the maturity of the
|
|
API, with several major changes to the library in the areas of state
|
|
handling, database support, and portability.
|
|
|
|
To improve the extensibility of the OSG's handling of OpenGL state,
|
|
new classes have been introduced to replace the previous hardwired
|
|
state handling classes. The new classes also allow improved state
|
|
sorting and lazy state updating which boosts both cull traversal
|
|
and particularly draw traversal performance.
|
|
|
|
To improve the modularity, interopability and conceptual clarity the
|
|
support classes for database loading have been moved from the core
|
|
osg library into their own osgDB library. Support for the .osg
|
|
ASCII native database format and the .rgb reader has moved into its own
|
|
osgPlugins library to further the cleanliness of the core library.
|
|
|
|
Support has be added for multiple OpenGL context's and hence multi-pipe
|
|
systems such as sgi's Onyx2, allowing each context to have its own
|
|
display list and texture objects.
|
|
|
|
The culler and rendering support in osgUtil has also been improved, and
|
|
significantly speeded up for complex models.
|
|
|
|
Also just in, thanks to Randall Hopper for adding support for FreeBSD :-)
|
|
|
|
|
|
23rd March 2001 - osg-0.8.39.tar.gz
|
|
|
|
>>> Port of OSG to MacOS underway
|
|
|
|
The first steps towards support of MacOS have been taken by Bryan Woods,
|
|
adding Metrowerks project files and adding support for MacOS into the
|
|
core scene graph. Work still in progress so assistance welcome to
|
|
complete the task.
|
|
|
|
Other major developments have been the addition of two new base classes
|
|
osg::StateAttribute and osg::Drawable which are designed to allow greater
|
|
extensibility of OpenGL state management and primitives.
|
|
|
|
|
|
17th Feburary 2001 - osg-0.8.38.tar.gz
|
|
|
|
>>> New 3DS loader added
|
|
|
|
The OpenSceneGraph now supports the 3DS file format. This makes
|
|
available a huge range of potential models. Check out
|
|
http://www.3dcafe.com or http://www.3drocketfuel.com for some juice.
|
|
|
|
10th Feburary 2001 - osg_src-0.8-37.tar.gz
|
|
|
|
>>> Texture compression now supported
|
|
|
|
The OpenSceneGraph now provides support for ARB and S3TC texture
|
|
compression. This allows more textures to be loaded onto graphics
|
|
card memory, resulting in happier users and a better world in which
|
|
to live.
|
|
|
|
This release also sees the addition of a simple hang gliding flight sim
|
|
demo.
|
|
|
|
25th January 2001 - osg_src-0.8-35.tar.gz
|
|
|
|
>>> Anisotropic texturing now supported <i>and</i> loading of gzip compressed files
|
|
|
|
Anisotropic texturing provides for the next step in quality texturing
|
|
filtering above tri-linear and is especially effective when viewing
|
|
texture surfaces at shallow angles.
|
|
|
|
Also added in this release is on-the-fly support for loading gzipped
|
|
(.osgtgz, .tgz) and zipped (.zip) database files. This features allows
|
|
users to store whole databases (models and textures) in a single
|
|
tar ball and unpack them automatically on running the osg. This
|
|
is ideal for browsing the web.
|
|
|
|
22nd December 2000 - osg_src-0.8-33.tar.gz
|
|
|
|
>>> Support added for OpenGL vertex arrays, and several key image loaders.
|
|
|
|
Support for OpenGL vertex arrays has been added to improve performance,
|
|
particularly accelerating PC based graphics.
|
|
|
|
Also added is support gif, jpeg, pic, tga, tiff image formats via
|
|
dynamic plugins.
|
|
|
|
8th Decemeber 2000 - osg_src-0.8-32.tar.gz
|
|
|
|
>>> New high resolution, low latency timer class - osg::Timer.
|
|
|
|
Real-time graphics relies upon accurate timers for updating physics
|
|
simulations and managing constant framerates. The OSG now provides
|
|
osg::Timer which, when supported, takes advantage of hardware timers.
|
|
|
|
|
|
18th November 2000 - osg_src-0.8-29.tar.gz
|
|
|
|
>>> Support for detail drawing with osg::PolygonOffset.
|
|
|
|
Rendering of polygons which overlay underlying geometry, such
|
|
as white lines on a runway, can now be achieved utilizing the
|
|
new osg::PolygonOffset which encapsulates glPolygonOffset to
|
|
avoid z fighting which otherwise hampers such detailing.
|
|
|
|
10th November 2000 - osg_src-0.8-28.tar.gz
|
|
|
|
>>> New Open Flight .flt loader!
|
|
|
|
Thanks to Brede Johansen submission of .flt loader, the OSG can now
|
|
read Open Flight .flt databases.
|
|
|
|
3rd November 2000 - osg_src-0.8-26.tar.gz
|
|
|
|
>>> Driving and Flight modes have been added to viewers.
|
|
|
|
osgUtil::DriveManipulator and osgUtil::FlightManipulator have been
|
|
added to allow the scene graph viewer (sgv) and other viewers to
|
|
support a drive and flying modes. These modes can be accessed
|
|
in sgv by pressing '2' and '3' respectively ('1' returns to
|
|
trackball manipulator). Left mouse button accelerates forward,
|
|
middle stops motion and right deccelerates.
|
|
|