195 lines
8.2 KiB
Plaintext
195 lines
8.2 KiB
Plaintext
OSG News (most significant items from ChangeLog)
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================================================
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9th August 2001 - osg-0.8.42.tar.gz
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>>> New osgWX library for integration of OSG with wxWindows apps.
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This release sees a relatively minor number of enhancements over
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0.8.41, the most significant being the new osgWX library and wxsgv
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demo written by Ben Discoe.
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Also from Brede Johansen in this release is the improvements in support for older
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.flt (Open Flight) files such versions 12 & 13. Previously only version
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15.6 files had been tested and developed to.
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Last but by no means least, several bug fixes related to view frustum
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culling have been made.
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25th July 2001 - osg-0.8.41.tar.gz
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>>> Support added for multi-pass and multi-stage rendering including Impostors.
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The key feature developed is a highly flexible framework for multi-pass and
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multi-stage rendering techniques. Unlike most scene graphs and games
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engines the OSG has as dynamic framework which automatically configures
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itself at runtime.
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Building ontop of the new framework's multi-stage rendering capabilities,
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support for Impostors (hirachical image caching) has been integrated into
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the core scene graph library making extremely easy to take advantage of
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this advanced rendering techinque - normally only seen in research papers.
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Check out osgimpostor demo to see how easy it is to add osg::Impostor
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nodes to your own models. Impostors are particularily effective are
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reducing scene complexity whilest minimizing the visual impact, making it
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ideal for scenes with large numbers of complex objects such as a city
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scene, or a dense forest.
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Taking advantage of the new framework's multi-pass rendering capabilities
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is osgreflect demo which illustrates how to achieve planar relfections
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using the stencil buffer and multi-pass rendering.
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The cool thing about both the osgreflect and osgimpostor demos is that
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there is no hardwiring to achieve the results, the scene graph stores
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all the information neccessary to specify the number and type of rendering
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passes, and the framework handles the rest behind the scenes. This also
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makes it very easy to add these advanced rendering techinques to your
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own applications as everything is cleanly encapsulated with
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osgUtil::SceneView.
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New loaders have been added to support .lwo (Light Wave), .obj
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(Alias Wavefront) and .dw (Design Workshop) 3D file formats making it
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even easier to compose your own worlds from models sourced from the
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web or your own.
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osg::Camera has been totally revamped and now supports asymetric
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and othographics projections in addition to the symetrical perspective
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projections.
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And finally, support for texture subloading has been added to osg::Texture
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and osg::Image. This allows textures to be updated dynamically, and
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has already been used for mpeg video playback!
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19th May 2001 - osg-0.8.40.tar.gz
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>>> Project lead, Robert Osfield, makes full-time commitment to OSG.
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This is the first full release since project lead, Robert Osfield, made
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a move to pursue the OSG's development full-time. This commitment has
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been made to bring the API rapidly towards maturity, and to provide
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high quality support and consultancy services. Please contact
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robert@openscenegraph.com if you have any queries.
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This release marks a significant step forward in the maturity of the
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API, with several major changes to the library in the areas of state
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handling, database support, and portability.
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To improve the extensibility of the OSG's handling of OpenGL state,
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new classes have been introduced to replace the previous hardwired
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state handling classes. The new classes also allow improved state
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sorting and lazy state updating which boosts both cull traversal
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and particularly draw traversal performance.
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To improve the modularity, interopability and conceptual clarity the
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support classes for database loading have been moved from the core
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osg library into their own osgDB library. Support for the .osg
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ASCII native database format and the .rgb reader has moved into its own
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osgPlugins library to further the cleanliness of the core library.
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Support has be added for multiple OpenGL context's and hence multi-pipe
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systems such as sgi's Onyx2, allowing each context to have its own
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display list and texture objects.
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The culler and rendering support in osgUtil has also been improved, and
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significantly speeded up for complex models.
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Also just in, thanks to Randall Hopper for adding support for FreeBSD :-)
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23rd March 2001 - osg-0.8.39.tar.gz
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>>> Port of OSG to MacOS underway
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The first steps towards support of MacOS have been taken by Bryan Woods,
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adding Metrowerks project files and adding support for MacOS into the
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core scene graph. Work still in progress so assistance welcome to
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complete the task.
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Other major developments have been the addition of two new base classes
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osg::StateAttribute and osg::Drawable which are designed to allow greater
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extensibility of OpenGL state management and primitives.
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17th Feburary 2001 - osg-0.8.38.tar.gz
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>>> New 3DS loader added
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The OpenSceneGraph now supports the 3DS file format. This makes
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available a huge range of potential models. Check out
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http://www.3dcafe.com or http://www.3drocketfuel.com for some juice.
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10th Feburary 2001 - osg_src-0.8-37.tar.gz
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>>> Texture compression now supported
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The OpenSceneGraph now provides support for ARB and S3TC texture
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compression. This allows more textures to be loaded onto graphics
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card memory, resulting in happier users and a better world in which
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to live.
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This release also sees the addition of a simple hang gliding flight sim
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demo.
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25th January 2001 - osg_src-0.8-35.tar.gz
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>>> Anisotropic texturing now supported <i>and</i> loading of gzip compressed files
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Anisotropic texturing provides for the next step in quality texturing
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filtering above tri-linear and is especially effective when viewing
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texture surfaces at shallow angles.
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Also added in this release is on-the-fly support for loading gzipped
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(.osgtgz, .tgz) and zipped (.zip) database files. This features allows
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users to store whole databases (models and textures) in a single
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tar ball and unpack them automatically on running the osg. This
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is ideal for browsing the web.
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22nd December 2000 - osg_src-0.8-33.tar.gz
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>>> Support added for OpenGL vertex arrays, and several key image loaders.
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Support for OpenGL vertex arrays has been added to improve performance,
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particularly accelerating PC based graphics.
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Also added is support gif, jpeg, pic, tga, tiff image formats via
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dynamic plugins.
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8th Decemeber 2000 - osg_src-0.8-32.tar.gz
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>>> New high resolution, low latency timer class - osg::Timer.
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Real-time graphics relies upon accurate timers for updating physics
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simulations and managing constant framerates. The OSG now provides
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osg::Timer which, when supported, takes advantage of hardware timers.
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18th November 2000 - osg_src-0.8-29.tar.gz
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>>> Support for detail drawing with osg::PolygonOffset.
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Rendering of polygons which overlay underlying geometry, such
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as white lines on a runway, can now be achieved utilizing the
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new osg::PolygonOffset which encapsulates glPolygonOffset to
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avoid z fighting which otherwise hampers such detailing.
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10th November 2000 - osg_src-0.8-28.tar.gz
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>>> New Open Flight .flt loader!
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Thanks to Brede Johansen submission of .flt loader, the OSG can now
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read Open Flight .flt databases.
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3rd November 2000 - osg_src-0.8-26.tar.gz
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>>> Driving and Flight modes have been added to viewers.
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osgUtil::DriveManipulator and osgUtil::FlightManipulator have been
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added to allow the scene graph viewer (sgv) and other viewers to
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support a drive and flying modes. These modes can be accessed
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in sgv by pressing '2' and '3' respectively ('1' returns to
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trackball manipulator). Left mouse button accelerates forward,
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middle stops motion and right deccelerates.
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