Re: [osg-users] mygui integration (for Wang Rui)
Hi Trajce, This should be easy because MyGUI window is encapsulated in derived osg::Drawable class and displayed in a HUD camera. You may simply set the camera ortho matrix to a different value like (0.0, 0.4, 0.0, 0.4) to have OSG scene as background. Wang Rui -- Original -- From: "Trajce Nikolov NICK";<trajce.nikolov.n...@gmail.com>; Date: Wed, Nov 11, 2015 04:43 AM To: "OpenSceneGraph Users"<osg-users@lists.openscenegraph.org>; Subject: Re: [osg-users] mygui integration (for Wang Rui) Hi Wang, did you had luck to have osg scene as a background (the osg blusish background with a model)? Any hints for this? Thanks a lot! Nick On Tue, Nov 10, 2015 at 7:45 AM, Trajce Nikolov NICK <trajce.nikolov.n...@gmail.com> wrote: Thanks Wang for the fast reply ... I will .. Cheers, Nick On Tue, Nov 10, 2015 at 1:55 AM, Wang Rui <wangra...@gmail.com> wrote: Hi Trajce, The osgmygui example is compiled against MyGUI 3.01 and will look for resource.xml file in current working directory to locate MyGUI media files. The template of resource.xml can be found at /CMake/Templates, which should also be installed to /bin automatically. Sorry for my inactivity these days, and feel free to use and commit to the osgRecipes project. :-) Wang Rui -- Original -- From: "Trajce Nikolov NICK";<trajce.nikolov.n...@gmail.com>; Date: Tue, Nov 10, 2015 03:01 AM To: "OpenSceneGraph Users"<osg-users@lists.openscenegraph.org>; Subject: [osg-users] mygui integration (for Wang Rui) Hi Wang, I am looking at your work with mygui and I was wondering where do you host the referenced config .xml files to run the sample. Please let me know Thanks as always ! Nick p.s. I hope the community will not mind for posting this to the user list :-) -- trajce nikolov nick ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- trajce nikolov nick -- trajce nikolov nick___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] mygui integration (for Wang Rui)
Hi Trajce, The osgmygui example is compiled against MyGUI 3.01 and will look for resource.xml file in current working directory to locate MyGUI media files. The template of resource.xml can be found at /CMake/Templates, which should also be installed to /bin automatically. Sorry for my inactivity these days, and feel free to use and commit to the osgRecipes project. :-) Wang Rui -- Original -- From: "Trajce Nikolov NICK";<trajce.nikolov.n...@gmail.com>; Date: Tue, Nov 10, 2015 03:01 AM To: "OpenSceneGraph Users"<osg-users@lists.openscenegraph.org>; Subject: [osg-users] mygui integration (for Wang Rui) Hi Wang, I am looking at your work with mygui and I was wondering where do you host the referenced config .xml files to run the sample. Please let me know Thanks as always ! Nick p.s. I hope the community will not mind for posting this to the user list :-) -- trajce nikolov nick___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG RECIPES Data
Hi Dave,
One of the purpose of the osgRecipes project is to provide all source code used
in the book OpenSceneGraph 3.0 Cookbook, published by Packt Publishing. And
what you found is just corresponding to the second example in Chapter 5. And it
should be a mistake... The correct code snippet, as shown in the book, is as
below:
image = osgDB::readImageFile( 0.ffmpeg, new osgDB::Options(format=vfwcap
frame_rate=25) );
It in fact uses the FFmpeg plugin to load video stream from the webcam using
the VFW option. You may change the filename to some other disk files like
c:/path/file.avi.ffmpeg and then ignore the option string. But there is no
animate PNG support in OSG... so sorry for the misdirection. :-)
Also thank you for supporting the osgRecipes project.
Wang Rui
-- Original --
From: Dave Sargrad;davidsarg...@hotmail.com;
Date: Wed, Apr 15, 2015 05:42 AM
To: osg-usersosg-users@lists.openscenegraph.org;
Subject: [osg-users] OSG RECIPES Data
Hi,
I've found the osgRecipes (https://github.com/xarray/osgRecipes) to be quite
useful. However most of the data is missing from these, and there is no proper
reference to the location of the data. I stumbled on this
(https://github.com/openscenegraph/osg-data) data. It seems to be a close fit
to the recipes. However some data files are missing. For example right now I'm
in cookbook_05_02. This cookbook is looking for one of two datafiles (in my
case pic.png). I think this is just a placeholder, and I'm expected to drop my
own animated PNG into place. I've tried several such png's found on the web,
but none seem to do what one might expect.
Code:
osg::ref_ptrosg::Image image;
if ( arguments.argc()1 )
image = osgDB::readImageFile( arguments[1] );
else
{
#ifdef WIN32
image = osgDB::readImageFile( Images/bouncing_beach_ball.png );
#else
image = osgDB::readImageFile( /dev/video0.ffmpeg );
#endif
}
osg::ImageStream* imageStream = dynamic_castosg::ImageStream*(
image.get() );
if ( imageStream ) imageStream-play();
I've never used animated png's before so I'm not sure how best to find a
compatible image.
In this code snippet, I replaced pic.png with a bouncing_beach_ball.png found
here
(http://upload.wikimedia.org/wikipedia/commons/1/14/Animated_PNG_example_bouncing_beach_ball.png).
Thank you for any insights.
Cheers,
Dave
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=63394#63394
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Re: [osg-users] Register object wrapper for osg::Geode
Hi Robert and John,
As Geode and Group serializers both contain only one user macro for storing
children nodes, I think we can simply rewrite the Geode serializer like this:
REGISTER_OBJECT_WRAPPER( Geode,
new osg::Geode,
osg::Geode,
osg::Object osg::Node osg::Geode )
{
ADD_USER_SERIALIZER( Drawables ); // _drawables
{
UPDATE_TO_VERSION_SCOPED( 115 )
REMOVE_SERIALIZER( Drawables );
ADD_USER_SERIALIZER( Children ); // _children
}
}
Similar work should be done on osg::Drawable serializers as well to support
some important attributes like NodeMask and CullingActive. This is the fastest
way to update serializers and keep back-compatibility in my opinion, without
changes to the core modules.
An alternative way is to have a new REGISTER_VERSIONED_OBJECT_WRAPPER macro to
submit a new ObjectWrapper to the registry, in which only wrapper with newer
version number can be accepted, such like:
REGISTER_VERSIONED_OBJECT_WRAPPER( 115, Geode,
new osg::Geode,
osg::Geode,
osg::Object osg::Group osg::Geode )
{
...
}
The second way might be easier and more readable for further use.
Cheers,
Wang Rui
-- Original --
From: Robert Osfield;robert.osfi...@gmail.com;
Date: Tue, Mar 24, 2015 05:37 PM
To: OpenSceneGraph Usersosg-users@lists.openscenegraph.org; Wang
Ruiwangra...@gmail.com;
Subject: Re: [osg-users] Register object wrapper for osg::Geode
Hi John and Rui,
Well spotted. I am not sure what to do about this one. I think fixing the
REGISTER_OBJECT_WRAPPER to include osg::Group may well break the parsing of
.osgb files as the current serializers aren't versioned for the associates list.
Having two separate wrappers might be the way forward. Or adding some for of
versioning for the associate list.
Any thoughts Rui?
Cheers,
Robert.
On 24 March 2015 at 08:33, John Ivar Haugland john.haugl...@gmail.com wrote:
Hi,
I notice that osg::Geode now inherits osg::Group instead of osg::Node.
However, in the corresponsing serializer osg::Group is not mentioned in
REGISTER_OBJECT_WRAPPER( Geode,
new osg::Geode,
osg::Geode,
osg::Object osg::Node osg::Geode )
Is this correct ? or should it be changed to
REGISTER_OBJECT_WRAPPER( Geode,
new osg::Geode,
osg::Geode,
osg::Object osg::Node osg::Group osg::Geode )
Kind regards
John Ivar Haugland
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Re: [osg-users] [ANN] OpenMW: Announcing switch to OSG
Hi Max, It's great to see such a famous open source game chooses OSG. I personally focus on improving the rendering quality of OSG-based applications using deferred lighting and advanced shadow mapping techniques, which may be found at http://www.openscenegraph.com/index.php/gallery/use-cases Some of my implementation were already open sourced under Github/osgRecipes. And I plan to release my current deferred pipeline after some recent client work. Maybe at that time I could help improve the game rendering, too. :-) Cheers, Wang Rui -- Original -- From: Max Maslov;maxmaslov.k...@gmail.com; Date: Thu, Feb 26, 2015 11:30 AM To: osg-usersosg-users@lists.openscenegraph.org; Subject: Re: [osg-users] [ANN] OpenMW: Announcing switch to OSG Thanks for the warm welcome! And visit our forum https://forum.openmw.org/ - we're always looking for new developers and just interested folk. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=62829#62829 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN]OSGWARES 1.0 Beta Release notes(a gift for Robert and osg community)!
Hi all, I saw this IP in the Chinese OSG forum, too, whose name changes from learning OSG two months to five months continuously... And my feel is the same... very strange. His original executables are highly packed and can't be proved to be related with OSG (in fact it depends on D3D11 when checked with DependencyWalker). He said that the OSG source code were totally rewritten with DirectX in his programs but I'd rather think it a bad joke.. I personally think this IP bothers others in an ill-disposed manner (not studying, not sharing code, not selling products...) but don't have enough evidence currently. And I'm really confusing about his motivation. So I'm just sharing the information I know here, and hope my guess goes wrong at last. Wang Rui 2014-06-26 20:33 GMT+08:00 Robert Osfield robert.osfi...@gmail.com: On 26 June 2014 12:21, Jordi Torres jtorresfa...@gmail.com wrote: Quite strange, Agree it's very odd conduct for an OSG user/possible contributor. Out of the blue anonymously claiming losts of things that don't add up. The ip corresponds to Hong Kong, the whole web implementation is quite strange if you look at the code. The download links are not normal a/a html tags. The domain name that he/she elected is also suspicious. The post he/she made is targeted for OSG newbies, and obviously the person (who does not give his/her name) don't know much about OSG. So I was looking forward to see more (that OSGWARES thing) before report spamming. Specific targeting of malware at OSG users? Might be a possibility. Trying to get a trojan installed on one or more of our computers? If it is an attack vector then it's a pretty crude one. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Please test svn/trunk and OSG-3.2 branch in prep for 3.3.2 dev release and OSG-3.2.1-rc4
Hi Robert, Both dynamic and static libraries/examples build fine on Windows 7, Visual Studio 2010. Also interested in the new osgUI library. Will go a little deeper to see if I can write some more examples for it. :-) Wang Rui 2014-06-26 23:21 GMT+08:00 Robert Osfield robert.osfi...@gmail.com: Hi All, I will the tag the 3.3.2 dev release, and the OSG-3.2.1 release candidate 4 tomorrow (Friday 27th June). Could users checkout and build svn/trunk and the OSG-3.2 branch to make sure it compiles on your platforms and works against your applications. Please post to this thread if things work or don't so I know whether it looks things are looking like they are converging nicely for a tagging svn/trunk and OSG-3.2 branch. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hi ALL OSG Community members, For Robert Osfield's justice and proving all is reality no virtual reality, tonight(china time) www.osg3d.org first public the OSG D3D 9.0's Codes
As far as I know there is GLDirect ( http://sourceforge.net/projects/gldirect/) that can work like a bridge between OpenGL and D3D. I don't know if your application depends on it to support DirectX, but this is not important... Just can't understand your motivation of providing single-exe applications that obviously come from some other engines or be packed meticulously with certain tools, and emphasizing they are OSG beginner works. But it's OK, will also wait to see the source code. It is already overnight in Chinese time now so I wonder if you mean the next night? Wang Rui 2014-06-26 23:50 GMT+08:00 LearningOSG LearningOSG learning...@gmail.com: Hi ALL OSG Community members,For Robert Osfield's justice and proving all is reality no virtual reality,tonight(china time) www.osg3d.org first public the OSG D3D 9.0's Codes Thanks robert's justice! When all is finished tonight,Please download the codes! cheers Learned osg five months ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Please test svn/trunk and OSG-3.2 branch in prep for 3.3.2 dev release and OSG-3.2.1-rc4
Thanks Robert. So it is much clear to me now. Wang Rui 2014-06-27 0:23 GMT+08:00 Robert Osfield robert.osfi...@gmail.com: HI Rui, On 26 June 2014 17:12, Wang Rui wangra...@gmail.com wrote: Both dynamic and static libraries/examples build fine on Windows 7, Visual Studio 2010. Also interested in the new osgUI library. Will go a little deeper to see if I can write some more examples for it. :-) I am still working on osgUI it so you probably won't be able to achieve much yet. I'm mainly testing it through lua scripts as this tests both the C++ side and the scripting integration. My own intention is to put high level UI elements together with scripting, composing it using low level C++ widgets that have full wrappers exposed via the osgDB serializers. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG static linking
Hi Chris, As far as I know, USE_OSGPLUGIN only calls a C-styled function through a static proxy variable, which is defined by REGISTER_OSGPLUGIN in the plugin source code body. So compiler can thus find and register the plugin while static linking. It should do no harm to user applications no matter dynamic/static linked. Wang Rui 2014-03-09 0:14 GMT+08:00 Chris Hanson xe...@alphapixel.com: I think what Paul was asking is, if you build and install OSG, is there any state retained anywhere (in a #define in a config.h or something) that indicates _if_ OSG itself WAS built with OSG_STATIC, and therefore if the application needs to configure its own #if blocks to automatically instantiate the USE_OSGPLUGIN code. And the secondary question is -- is there any harm in having USE-OSGPLUGIN blocks in an application that is using OSG dynamically linked? I tried to answer the question, but discovered that I don't actually know these answers. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OT: Windows GDI/GDI++ Alternative
Hi Gordon, You may have a look at my latest submission to osgRecipes: https://github.com/xarray/osgRecipes/tree/master/integrations/osgagg I've jusst updated my work on integrating OSG and AGG (Anti-Grain Geometry) after several silent months working for clients and my first baby. It provides almost all graphics interfaces I think useful. Hope it will be of help to you, too. :-) Will be back to regular OSG developments soon. Cheers, Wang Rui 2014-03-05 12:34 GMT+08:00 Gordon Tomlinson gor...@gordon-tomlinson.com: Hi Folks This question is a little of topic but thought this group might be a good group to ask, I have a windows application ( that has an OSG component) that it looks like I have to port to Linux (Redhat), this application makes a lot of use of the Windows GDI/GDI++ library (Windows graphics device interface) and my current Linux knowledge is 9 years stale Can anyone recommend a good Linux alternative to the Windows GDI/GDI++ that offers comparable functionality Thanks Gordon _ *Gordon Tomlinson *Self defence is not a function of learning tricks but is a function of how quickly and intensely one can arouse one's instinct for survival -*Master Tambo Tetsura* ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Is it possible to use EffectCompositor to describe effects per object?
Hi Michael, Effect compositor in fact adds the child scene graph to a camera binding to a FBO, and then uses RTT cameras to perform the post processing work. The last step is always to show the final image on an HUD quad so all other scene nodes will be occluded. The only way to make the effect compositor work with other fixed pipeline nodes is to write to the depth values in the shader code of the last step, which cannot be automated. The dof.xml does such work so you may try ./osgeffectcompositor --normal-scene cessna.osg --effect dof.xml to see how normal and deferred shaded objects are merged. At present I haven't had a better idea about this problem. :-) Wang Rui 2013/10/30 michael kapelko korn...@gmail.com Hi. I've recently implemented deferred shading with normal mapping and shadow mapping using EffectCompositor, but it has effect on the whole scene, not a single object. Is it possible to use EffectCompositor to apply effects per object? Thanks. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] deferred shading in osg
Hi Nick, You may want to have a look at the osgeffectcompositor example in the osgRecipes project, which is an initial deferred shading framework for OSG. Also there is the osgPPU project that can do the same work for you, I think. Wang Rui 2013/8/5 Trajce Nikolov NICK trajce.nikolov.n...@gmail.com Hi Community, has anyone has done some work on this and willing to share hints, snippets ? Thanks a lot! Nick -- trajce nikolov nick ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN] New versions of the SilverLining Cloud, Sky Weather SDK and the Triton Ocean SDK
You may also have a look at the osgRecipes project which has an osgtriton example with patch support. Wang Rui 2013/8/1 Chris Hanson xe...@alphapixel.com You might want to contact Frank Kane at Sundog software directly. I don't think is really appropriate for the OSG users mailing list. On Thu, May 30, 2013 at 12:27 PM, Mohammed Djeralfia d_moham...@yahoo.frwrote: Hello, I am new with Triton, I want to set Water to a specific area in my project -- use Patch but all my objects were covered by water. So can you give us a simple code for osg using patch to try it. Thank you in advance. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=54324#54324 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android @alphapixel https://twitter.com/alphapixel facebook.com/alphapixel (775) 623-PIXL [7495] ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Solving forum.openscenegraph.org problems
Hi Robert, I'm currently working on the Chinese translation of OpenGL Programming Guide 8th Edition, as well as some client projects. It's heavy work for me so sorry for not being with the community these days. Fortunately I'm going to have a few more time later and will be back for more tests and feature addtions :-) In 2008, I started a Chinese OSG forum (bbs.osgchina.org), and have been managing it until now, which has about 7 housand members and more than 50 thousand posts. My experience is simply that you can hardly satisfy everyone who has questions in the forum. In most cases, askers will only put the questions like 'why my scene is black' or 'how to implement 3DGIS software', and it is nearly impossible to give a complete answer. I will always ignore such topics or just give an one-line answer to save their time and my time at that time. :-) We had better support forums and even social networks for OSG users, especially those young men, to get in touch with each other. This will also help OSG itself to grow more quickly and get more attentions when related news are coming. Release news will also receive more feedbacks if published on forum. In fact, in my opinion, the forum should not be somewhere filled with questions and answers, but a place for sharing ideas and achievements, making friends, and looking for opportunities. We need not only moderators but also active members to publish news, feature suggestions, discussions and project galleries in the forum, to attract more people to attend and encourage them to share their ideas, too. Wang Rui 2013/7/31 Björn Blissing bjorn.bliss...@vti.se Hi Robert et al, I would love for the forum to keep working. The forum is usually my goto place to find new information about OpenSceneGraph and I actually like the format better then the e-mail lists. Although the current state of the forum makes me a bit sad for the new users. I have been contemplating volunteering to do some basic moderation, ie. proof reading the first messages that users post before getting forum approval. My main hesitation has been, as I guess for all of you, lack of time. I also tend to work with OSG related project in irregular time periods. I have actually been working with OSG on and off since 2002. (My first experience with OSG was at a presentation that Robert held in Stockholm in November 2001). I usually work with it for a month or two and then I am away from the community for a couple of months doing other projects. The forum is perfect for this on-and-off lifestyle since it doesn't clog up my e-mail folders when I am inactive as a OSG user. (Registering and unregistering from the email lists became rather tedious.) So rather then letting the forum die, I would like to volunteer as moderator. Although I probably would be a moderator that would be rather inactive during some periods. But if there are more moderators our inactive periods hopefully shouldn't overlap too much. TLDR; I hereby volunteer as a forum moderator. Best regards, Björn Blissing -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=55494#55494 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] HowTo use UPDATE_TO_VERSION for custom osg::Object separate from osgVersion()
Hi Peter, Sorry for the delay. I'm still struggling on some business so not submit the new serializer version-control code. But as far as I know, there is no UPDATE_TO_USER_VERSION in any developer/stable version of OSG. It only exists in my submission, which needs to be improved so not merged. Thus I think maybe you have applied this submission in your OSG directory before, and then overwrite it with the new 3.1.5 release? I will finish my present work as soon as possible and submit to the OSG core again. Wang Rui 2013/4/18 Peter Bako osgfo...@tevs.eu Hello Wang. Recently, I downloaded osg version 3.1.5 and I found out, that my UPDATE_TO_USER_VERSION macros don't work anymore. I digged into the osg source and found out that it is not there anymore, so I searched the forum but I didn't find any reason why was it removed. I used osg 3.1.1 before. I don't want to force you, I just want to ask, why was it removed if it was already there once? Thank you! Cheers, Peter -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53678#53678 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Versioning to WRITE an old version ?
Hi Robert and Renaud, Sorry for the delay. I have just finished one of my client work and uploaded some pictures at www.openscenegraph.com (Gallery - Use cases - City of Xining). Hope someone would enjoy it. :-) Current serialization mechanism doesn't support writing to previous versions. And as Robert mentioned, we can implement such feature by customizing the version number of OutputStream while writing to files. This functionality will be submitted along with the alterable versioning mechanism soon, maybe this weekend. Thanks, Wang Rui 2013/3/26 Robert Osfield robert.osfi...@gmail.com Hi Renaud, I haven't ever tried forcing the serializes to write to an old version, Wang Rui is the original author so to answer the question I have to dig into the code. Looking at src/osgDB/OutputStream.cpp is curerntly hardwired to write out the current OSG version: *this PROPERTY(#Version) (unsigned int)OPENSCENEGRAPH_SOVERSION std::endl; So for now I don't think there is a way and to provide a solution would require modifications to the source code. My first thought would be perhaps one could have a so OutputStream version member variable default to OPENSCENEGRAPH_SOVERSION but allow this to be overwridden then use this when writing out version and selecting which wrappers to use in the ObjectWrapper.cpp. I know that Rui has been thinking about introducing a more flexible versioning scheme for the serializers so perhaps this capability could be worked into this work. He has recently mentioned that he's too busy with other work to get back to this right now but once he gets a quieter spell he come back to it. Robert. On 28 February 2013 19:12, Renaud Paris renaud.keri...@free.fr wrote: Hi, I've just spent some times on understanding serialization and versioning in wrappers. As far as I understand, you can read files written by previous versions. But is there a way to write as if it was written by a previous version? Do I miss something? Would it be a wrong idea to force version before writing and to modify ObjectWrapper::write to use either OPENSCENEGRAPH_SOVERSION or the wrapper version in order to select a serializer or not? Thank you! Cheers, Renaud -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52910#52910 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] HowTo use UPDATE_TO_VERSION for custom osg::Object separate from osgVersion()
Hi Christian, I'm currently closed to the deadline of my client work so I have to focus on it rather than the contribution. :-) I will try to get out of there and consider implementing the custom serialiser version functionality. Wang Rui 2013/3/19 Christian Noon cjn...@gmail.com Hi Wang Rui, Just wanted to ping this ticket to see if you've had a chance to make any progress. Thanks! -- Christian -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53145#53145 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Possible to make pixel-pretty text in OSG?
Hi Jesper, I've already integrated OSG and AGG (Anti-grained geometry library) to make use of the latter's 2D drawing ability. AGG can draw nice antialiased shapes and texts with very high quality AFAIK, so maybe you would like to have a look at it and see if it could benefit your work. You may download the osgagg example at: https://github.com/xarray/osgRecipes/tree/master/integrations/osgagg Wang Rui 2013/3/12 Jesper D. Thomsen j...@anybodytech.com Hi guys, ** ** We’re using OSG in our application to display a modelview and also as the basis for our chart views, which in general is working great for us. One area where we would want to improve our quality is in the display of text in our charts, where we’re using OSGtext for axis labels etc. (see attached screenshot). Is there any way in OSG to make this text look nicer in order to be able to use smaller text and still have it readable? Right now, the text quality suffers badly from (I’m guessing) the way the text is rendered to bitmaps and then rescaled when being displayed. I have included a tooltip containing pixel-based text in the screenshot as a comparison ** ** Would using OSGPango for text help with this, or would I somehow be able to use OpenGL text directly instead? The text in question is always being display billboarded and with a fixed pixel height. ** ** Thanks ** ** Jesper D. Thomsen AnyBody Technology ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] HowTo use UPDATE_TO_VERSION for custom osg::Object separate from osgVersion()
Hi Christian, Current serialization code doesn't support version control of custom serializers. I have once planned to submit this functionality, but it seems someone stole my memory after that... Sorry for the inconvenience. I will try to make it as soon as possible. Wang Rui 2013/2/26 Christian Noon cjn...@gmail.com Hello, I've dug through the forums as much as possible and I can't seem to figure out if there's a way to actually do this. I've written my own wrapper for a custom osg::Node that sits in my own library. I need to have the ability to create different versions of my serialization to accommodate future changes in the file structure. I've managed to get the UPDATE_TO_VERSION and UPDATE_TO_VERSION_SCOPED methods working, but they only allow me to control versioning based on the osg soversion. This is a huge problem for me if I need to change my serialization more often than the OSG version is actually updated. Is it possible to decouple the version number of my wrappers from the osg version? Thanks for all your help, really appreciate it! -- Christian -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52869#52869 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Cheaper way to implement rendering-to-texture and post-processing pipeline?
Hi, In my present implementation in the osgRecipes project, I create a list of pre-render cameras internally as post processing passes, instead of explicitly in the scene graph. So on the user level they may simply write: EffectCompositor* effect = new EffectCompositor; effect-loadFromEffectFile( ssao.xml ); effect-addChild( subgraph ); And during the cull traversal, cameras (and screen quads) are added directly to the cull visitor: cv-push*(); camera-accept(*cv); ... cv-pop*(); This simplifies the class interface but doesn't change the render stage/render bins we current use. But at least, the post processing passes are not traversable by a scene node visitor, thus not part of the scene graph and will not affect intersection test and other updating work, as Paul and Aurelien point out.. But we may not be able to directly migrate these to a draw callback, because CullVisitor doesn't really render anything, but will create the render-graph for SceneView. A possible idea in my mind is to execute the FrameBufferObject::apply() method along with Quad::drawImplementation() manually in the draw callback, which means to have another complete deferred draw process, besides the main renderstage/renderbin back-end. I don't know if it could be a good choice because the implementation may finally look like an OpenGL-style one, not an OSG composition. Thanks, Wang Rui 2013/2/15 Aurelien Albert aurelien.alb...@alyotech.fr Hi, the concept of post-processing is inherently non-spatial, so it really doesn't belong in a scene graph at all = this is why I think we should be able to execute a render pass on an arbitrary camera : the subgraph of this camera may not have a spatial organization, but a process-logic organization Wouldn't it be better to have a list of dedicated RTT objects as described by Rui, and process them as a Camera post-draw callback = this also my idea : have a dedicated executeCamera method which take a camera and a state as arguments : with that we can call it from a final / post draw call back. Rather than a list of dedicated RTT objects which will never cover all the diferent use cases, I think this is better to re-use the camera class with it's subgraph, which already works well : by building different small sub-graph we can implement different processing (with a render quad as input, or with a point cloud, or with anything else). Aurelien -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52688#52688 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Cheaper way to implement rendering-to-texture and post-processing pipeline?
Hi Robert, hi all, I want to raise this topic when reviewing my effect composting/view-dependent shadow code. As far as I know, most of us use osg::Camera for rendering to texture and thus the post-processing/deferred shading work. We attach the camera's sub scene to a texture with attach() and set render target to FBO and so on. It works fine so far in my client work. But these days I found another way to render scene to FBO based texture/image: First I create a node (include input textures, shaders, and the sub scene or a screen sized quad) and apply FBO and Viewport as its state attributes: osg::ref_ptrosg::Texture2D tex = new osg::Texture2D; tex-setTextureSize( 1024, 1024 ); osg::ref_ptrosg::FrameBufferObject fbo = new osg::FrameBufferObject; fbo-setAttachment( osg::Camera::COLOR_BUFFER, osg::FrameBufferAttachment(tex) ); node-getOrCreateStateSet()-setAttributeAndModes( fbo.get() ); node-getOrCreateStateSet()-setAttributeAndModes( new osg::Viewport(0, 0, 1024, 1024) ); Then if we need more deferred passes, we can add more nodes with screen sized quads and set texOutput as texture attributes. The intermediate passes require fixed view and projection matrix. So we can add it a cull callback like: cv-pushModelViewMatrix( new RefMatrix(Matrix()), Transform::ABSOLUTE_RF ); cv-pushProjectionMatrix( new RefMatrix(Matrix::ortho2D(0.0, 1.0, 0.0, 1.0)) ); each_child-accept( nv ); cv-popProjectionMatrix(); cv-popModelViewMatrix(); This works well in my initial tests and it won't require a list of osg::Camera classes. I think this would be a light-weighted way for the post-processing work as it won't create multiple RenderStages at the back-end and will reduce the possibility of having too many nests of cameras in a scene graph. Do you think it useful to have such a class? User input a sub-scene or any texture; the class uses multiple passes to process it and output to a result texture. The class won't have potential cameras for the RTT work, and can be placed anywhere in the scene graph as a deferred pipeline implementer, or a pure GPU-based image filter. I'd like to rewrite my effect compositor implementation with the new idea if it is considered necessary, or I will forget it and soon be getting ready to submit both the deferred shading pipeline and the new VDSM code in the following week. :-) Cheers, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Cheaper way to implement rendering-to-texture and post-processing pipeline?
Hi all, Thanks for the replies. It is always midnight for me when most community members are active so I have to reply to you all later in my morning. :-) Paul, I haven't done any comparisons yet. Post processing steps won't be too many in a common application, and as Robert says, the cull time cost of a camera and a normal node won't be too different, so I think the results may be difficult to measure. Aurelien's past idea (using RenderBins directly) also interests me but it will change the back-end dramatically. I'm also focusing on implementing a complete deferred pipeline including HDR, SSAO, color grading and AA work, and finally merge it with normal scenes like the HUD GUI. The automatic switch between DS and normal pipeline is done by changing whole 'technique' instead of moving child nodes, which may be found in the osgRecipes project I'm maintaining. But I don't think it easy to implement an executeCameraAsync() method at present. As OSG is a lazy rendering system and one can hardly insert some CPU side computation into FBO cameras. Maybe it could be done by using pre- and post-draw callbacks of a specified camera. I also agree with Daniel's second opinion that the pipeline should be compatible with multi-views. As a node in the scene graph we can easily do this by sharing the same root node in different views. For the first opinion, because we also have nodes that should not be affected by the post-processing effects (like the GUI, HUD display), and developers may require multiple post effects in the same scene graph (e.g., draw dynamic and static objects differently), I don't think it convincing to totally separate the post processing framework and place it in draw callbacks or viewer's graphics operations. So, in conclusion, I will agree with Robert that OSG itself don't need an additional RTT node at present and will use cameras to perform every passes, which is already proved in my client work to be compatible with most current OSG functionalities including the VDSM shadows, and some external libraries like SilverLining and osgEarth. I will try to tidy and submit my current code in the next week as well as a demo scene. And then I will modify the osgRecipes project to use the new idea flashed in my mind to find the pros and cons of it. Thanks, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgCompute] END_BRACKET
Hi Sajjadul, The ‘BEGIN_BRACKET' and 'END_BRACKET' macros are changed from static ones to class members in rev. 13058 to fix threading read/write problems . They are not modified yet in OSG 3.0.1 (older than rev.13058) so you will see the compiling problems above. Please try to use some later developer releases (like 3.1.4, or directly use the trunk) instead to make osgCompute compiled. Wang Rui 2013/2/13 Sajjadul Islam dosto.wa...@gmail.com Hi, I downloaded the latest osgCompute from the repository and i have the openscenegraph 3.0.1 installed in the system. And i am getting the similar compilation error while building the osgCompute: Code: [ 35%] Building CXX object src/osgCudaSerializer/CMakeFiles/osgdb_serializers_osgCuda.dir/Program.cpp.o /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp: In function ‘bool writeResources(osgDB::OutputStream, const osgCuda::Program)’: /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp:66:21: error: ‘class osgDB::OutputStream’ has no member named ‘BEGIN_BRACKET’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp:87:11: error: ‘class osgDB::OutputStream’ has no member named ‘END_BRACKET’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp: In function ‘bool readResources(osgDB::InputStream, osgCuda::Program)’: /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp:95:21: error: ‘class osgDB::InputStream’ has no member named ‘BEGIN_BRACKET’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp:116:11: error: ‘class osgDB::InputStream’ has no member named ‘END_BRACKET’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp: In function ‘bool writeComputations(osgDB::OutputStream, const osgCuda::Program)’: /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp:141:22: error: ‘class osgDB::OutputStream’ has no member named ‘BEGIN_BRACKET’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp:152:11: error: ‘class osgDB::OutputStream’ has no member named ‘END_BRACKET’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp: In function ‘bool readComputations(osgDB::InputStream, osgCuda::Program)’: /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp:160:22: error: ‘class osgDB::InputStream’ has no member named ‘BEGIN_BRACKET’ /home/sajjad/Downloads/OpenSceneGraph/osgCompute/osgCompute/src/osgCudaSerializer/Program.cpp:184:11: error: ‘class osgDB::InputStream’ has no member named ‘END_BRACKET’ make[2]: *** [src/osgCudaSerializer/CMakeFiles/osgdb_serializers_osgCuda.dir/Program.cpp.o] Error 1 make[1]: *** [src/osgCudaSerializer/CMakeFiles/osgdb_serializers_osgCuda.dir/all] Error 2 make: *** [all] Error 2 Any idea folks? Cheers, Sajjadul -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52627#52627 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Qt5 integration first try
Hi Vitezslav, That's good to hear that Qt5 integration can work now. Could you please send your patches (complete source files are recommended) to the osg-submissions so Robert can review and merge them? Cheers, Wang Rui 2013/1/28 Vitezslav Zajic vitezslav.za...@dlubal.cz Hi Wang, I've patched OSG to get multithreaded rendering working. I've used QGLContext::moveToThread, as you suggested, before the thread starts and the same function when the thread ends. I'm sharing the patch. Maybe it will save a little of your time. Please note that I'm not sure this is the best way to do it, take it just as a hint what has to be done. Cheers, Vitezslav -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52239#52239 Attachments: http://forum.openscenegraph.org//files/osg_qt5_multithreading_564.txt ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Using cmath to clean up include/osg/Math
Hi Robert, The cmath header changes can build with Visual Studio 2012 under Windows 7. I'd like to help test on the OpenSolaris platform later if I could download and make it work on my virtual machine. :-) Wang Rui 2013/2/6 Robert Osfield robert.osfi...@gmail.com Hi All, On 6 February 2013 11:02, Robert Osfield robert.osfi...@gmail.com wrote: With this issue I'm inclined to make the change and then push the problem out in the community to test, if no one complains that it'll be plain sailing all the way to the next stable release, for this topic at least. I have gone ahead and cleaned up include/osg/Math so that it uses cmath and cfloat on all platforms, there is only one platform specific hack left and that for MS's dumb arse we're not doing the Standard C++ properly, we'll do it in a own way so naa naa naa, the hack being _isnan in place of the proper std::isnan. I have checked this clean up in to svn/trunk so would appreciate testing out in the community for as wide range of platforms as you can. Fingers crossed it'll just work for all the platforms we need and life can be good :-) Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Sharing some screenshots of my present work :-)
Hi Daniel, Yes, I've implemented own HDR/Bloom for use along with SilverLining sky/cloud. You may found my contribution to the SilverLining libray in its latest osgRecipes example. :-) I once managed to submit my effect compositor and new shadow map code to the OSG core to build a deferred shading system for it. But I must delay my plan at present because of some client work. I may consider resubmit them in a few weeks. Wang Rui 2013/1/28 Daniel Schmid daniel.sch...@swiss-simtec.ch Hi Wang I'm using your VDSM implementation in my project, and also Silverlining for atmosphere simulation. Did you implement your own tone-mapping (HDR) or do you use Silverlining in the standard way? In case you use your own tone-mapping, I would be interested in some sample code, because I didn't manage to achieve something that was usable... Thank you! Cheers, Daniel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52236#52236 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] AlphaPixel Whitepaper on VirtualPlanetBuilder/OSGDEM
Hi Chris, That's great to have more papers about the implementations of more OSG components! Thank you for the efforts on them. :-) Is it possible to translate these papers into Chinese and put them on some Chinese forums, of course, with original copyrights? Thanks, Wang Rui 2013/1/22 Chris Hanson xe...@alphapixel.com As promised last week: http://alphapixel.com/content/openscengraph-virtual-planet-builder-osgdem Feedback welcomed. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android @alphapixel https://twitter.com/alphapixel facebook.com/alphapixel (775) 623-PIXL [7495] ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Which GPGPU postprocessing method is best for me?
Hi Ethan, You may found the osgeffectcompositor in osgRecipes project as Jeremy says. I'm currently working on a better version of ViewDependentShadowMap and will try to provide a complete pipeline using forward shadows and deferred shading work. It is always appreciated if you and others could provide some more ideas and suggestions. :-) Wang Rui 2013/1/8 Ethan Fahy ethanf...@gmail.com Thank you Jeremy I'll have a look at that implementation (I was actually just reading through Rui Wang's cookbook when you posted this). In the meantime I'll also try compiling osgPPU and osgCompute and go through some examples to assess which of these can accomplish what I am looking to do. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=51827#51827 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Create a custom RenderStage
Hi Aurelien, The OpenSceneGraph Cookbook provides a simple Depth-of-Field example that implements post-processing work with multiple camera ndoes (not slaves). You may have a look at it at https://github.com/xarray/osgRecipes . FYI, It also includes an osgeffectcompositor example that provides an initial deferred shading solution for OSG developers. Wang Rui 2013/1/2 Aurelien Albert aurelien.alb...@alyotech.fr Hi, I use differents custom RenderStages : as pre-renderstage for pre-processing and as post-renderstage for post processing. These processing are executed using FBO render targets. Currently I'm doing that with slaves cameras, but : - the RenderStage class is derived from the RenderBin class - it is possible to register new RenderBins using the addRenderBinPrototype method So I wonder if it is possible to create a new RenderStage prototype to replace my slave cameras ? How to configure the rendertarget of these renderstages ? My goal here is to learn how to create / customize RenderStages and RenderBins. Thank you! Cheers, Aurelien -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=51746#51746 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Create a custom RenderStage
Hi Aurelien, Oh, that's an interesting idea that not intrude the scene graph but with a special renderbin mode. I have never tried but know there is a Camera::setRenderingCache() method that would provide RenderStage instance corresponding with each camera node. It is used in osgUtil/CullVisitor, which has an internal RenderingCache class. Maybe you could do something here to replace the RenderingCache to your own one. W.r.t the creation of RenderBin instances, it is done in CullVisitor::pushStateSet() and can hardly be re-implemented unless you rewrite some source code of OSG itself, I think. Hope it helps, Wang Rui 2013/1/2 Aurelien Albert aurelien.alb...@alyotech.fr Hi Wang, Thanks for your quick answer ! I'm already doing pre and post-processing of various king : tone-mapping, DOF, motion blur... using multiple cameras, slave or childs. Now I'm trying to create custom renderstages, without multiple cameras, but using a RenderBin prototype. This could be very usefull in some situations, for example : - having a graph with a parent group and 3 childs : A, B and C - render node A and node C using a custom pre-renderstage - render node B as usual To do so with multiple cameras, the graph need to be manipulated to create a new camera and move A and C under this camera. Using a custom RenderStage registered as a RenderBin prototype, there is no need to edit the scene graph, but just edit the RenderBin of A and C statesets. In this situation, culling and events traversal are also done as described in the main graph : - parent --- A --- B --- C But whith multiple cameras it leads to something like : - parent --- child camera -- A -- C --- B Cheers, Aurelien -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=51748#51748 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgmovie receive stream
Hi David, I believe we can make use of the ffmpeg plugin to receive video streams. In fact webcams can already be retrieved and shown in OSG. Personally I haven't tested how to load rtsp/udp video streams using osgdb_ffmpeg directly. But in the osgRecipes project I have successfully used the VLC SDK to do the same work. I hope it will also help. Wang Rui 2012/12/16 DavidHornung horn...@googlemail.com Any Suggestions? is it possible to receive a network video stream ? Hello, is it possible to play a received stream with the ffmpeg osg plugin? Since it is possible to read from /dev/video0 it should, or? Cheers, David __**_ osg-users mailing list osg-users@lists.**openscenegraph.org osg-users@lists.openscenegraph.org http://lists.openscenegraph.**org/listinfo.cgi/osg-users-** openscenegraph.orghttp://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VirtualPlanetBuilder and the Cookbook
Hi Tony, Just use the .tif files. :-) Wang Rui 2012/12/7 Tony Vasile ming...@gmail.com Hi, Haven't heard anything from this post for a couple of weeks does anyone have an idea of what I have to do? Thank you! Cheers, Tony -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=51449#51449 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Qt5 integration first try
Hi Kristofer, Yes, I've noticed your submission but haven't had time to try it. I'd like to have a look at your code this weekend after my client work. :-) Thanks, Wang Rui 2012/11/29 Kristofer Tingdahl kristofer.tingd...@dgbes.com Hi, I did, FYI, submit a patch to adapt the cmake-system to compile with qt5 to osg-submissions a couple of days ago, but I have not heard anything. If you did not subscribe to that list, you can get my changes at https://docs.google.com/open?id=0B_4ZHt6ZZHE9Q2RBLUxac1hZQ2M I was, as you describe as well, not able to get multi-threaded rendering working. Sincerely, Kristofer Tingdahl -- Kristofer Tingdahl, Ph. D. CEO dGB Earth Sciences ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Retrobooster playable demo
Unbelievable! That's really a nice work. :-) Wang Rui 2012/11/30 Terry Welsh mogu...@gmail.com A little more blatant self-promotion here. I just released the first playable demo of my OSG-based game. Check it out if you want to see some crazy OSG action. http://www.reallyslick.com/retrobooster/downloads.html -- Terry Welsh www.reallyslick.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Qt5 integration first try
Hi Martin, Oh, good news! I'm working on Qt5, too. You may see something in the osgRecipes project. In just provided a simple example integrating OSG and Qt5 and draw Qt widgets in the scene graph. It is tested under Windows, but can't work in multithreaded mode. Unfortunately this seems not an OSG related problem, but an issue in QGLContext that can't work under different threads even doneCurrent() is executed in time. In the following link I found that Qt expects have already noticed it: https://codereview.qt-project.org/#change,40644 I'd like to then use moveToThread() to move QGLContext to the rendering thread so that it could work (at present it will fail and say it can't make a context current on another thread). Maybe these information will help you, too. Cheers, Wang Rui 2012/11/29 Martin Scheffler osgfo...@tevs.eu Hi all, here is a rough first version of Qt5 running together with OSG. It works fine on linux with Qt5 beta 2. On windows I get compile errors, a conflict between the OpenGL defines in OSG and those in Qt. Maybe it may become necessary to separate qt and osg even more so that their headers don't collide. OSG is now rendered to an opengl context created by Qt. The context object renders to a QWindow. Unfortunately there is not yet an easy way to add a QWindow as a child to QWidget (this will come in Qt 5.1 I have heard). But it is possible to add a QWindow to a QWidget by using the window handle. What's next: * Render in a different thread - I just didn't come around to try it, I don't expect that many problems * Try to render Qt Quick over the OSG scene. Qt could then be used to make HUDs. Maybe it is even possible to still keep OSG and Qt in different threads? Thank you! Cheers, Martin[/img] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=51281#51281 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Ideas about a resource system, and deferred rendering framework
Hi Michael, Current implementation is maintained in osgRecipes ( https://github.com/xarray/osgRecipes), and some snapshots are shared in the mail-list a few days ago using both VDSM and the compositor. Wang Rui 2012/11/17 michael kapelko korn...@gmail.com What's the progress on this? And is there any open repository? 2012/9/17 Jeremy Moles cubic...@gmail.com On Tue, 2012-09-11 at 10:54 +0800, Wang Rui wrote: Hi Jeremy, Thanks for the tests and feedback. I'm focusing on creating a material system which may be a little similar to the Ogre one but will be very easy to integrate with OSG scenes. I'd like to also have a benchmark including a complete deferred shading pipeline in the near future to show others how OSG produces realistic worlds. :-) Your requirement could be easiliy implemented with one forward pass rendering the scene to a texture, and two deferred passes doing the blur work with the texture as input. A final compositing pass will make use of the outputs of the blur passes and output to a new texture. You can get and use the new texture then in the scene for your own purpose instead of direct displaying them on screen. I'd like to upload a DOF effect file and an updated example some days later to demonstrate how these work. Hi Wang, Did you ever get a chance to work up an example showing something like this? I've been trying to get it to work using a modified blur-x/blur-y approach from osgPPU, but have had no success. Thanks, Wang Rui 2012/9/11 Jeremy Moles cubic...@gmail.com: On Mon, 2012-09-10 at 22:57 +0800, Wang Rui wrote: This looks really cool so far. I'd be really interested to know if it supports the following (and would be willing to create examples if you're willing to help)... Scenario: I want to render an entire subgraph to an FBO texture once, then apply 2 or more completely different shaders in some order, then put the final result into a last texture to be used somewhere in the scene. I'm doing a guassian blur, which typically applies two different shaders for x and y. I have this working in osgPPU, but I think you already have enough to do it here, I just couldn't put the pieces together. :) ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Sharing some screenshots of my present work :-)
Hi all, I'd love to share some snapshots of my present work, which lasts for half a months and depends heavily on a modified version of osgShadow and the OSG effect compositor in developing. The scene is from part of a CBD area in Beijing, and it will be shown on a wall with four projectors at last. I use VDSM with additional PSSM support and customized shaders to provide real-time illumination and shadowing. And the compositor which is currently maintained in osgRecipes is used to add glow effect and final color grading. SilverLining SDK is used for sky and cloud rendering. The scene includes only a few refined building models, but with OSG's dynamic paging ability we can easily support very large city with nearly the same rendering quality. I will be glad to submit both the shadow and compositor functionality to OSG core at the end of this year, or at the beginning of next year (as Robert is busy at present :-) and hope it could be improved again and again and also help other develop their applications. Current city models may not be suitable for open source use so I may have to find and commit a copyleft set of models along with the coming submissions. It would be appreciated if somebody could provide me some at that time. Cheers, Wang Rui [image: 内嵌图片 6] [image: 内嵌图片 1] [image: 内嵌图片 2] [image: 内嵌图片 3] [image: 内嵌图片 4] [image: 内嵌图片 5] ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Review of osgQt changes.
Hi Kristofer, I can't remember the exact time I wrote the GraphicsWindowQt class, maybe two or three years ago. I designed it along with the OpenThreads for Qt to make OSG's threading and windowing APIs compatible with Qt so that to later migrate to Symbian/Meego... But then iPhone and Android change the world and the plan is deprecated. :-) But Qt integration is still a very interesting and valuable topic nowadays and thanks to the contribution of the whole community, the GraphicsWindowQt class is now usable for some practical uses. I myself also use Qt in some client projects and think of integrating OSG with QML as well as some Qt 5.0 new features (e.g., the Qt3D module) some time later. I agree that the relationship of GraphicsWindowQt and GLWidget is confusing. Other windowing interface like GraphicsWindowWin32 can either create its new window or accept an existing one for the rendering context use. An ideal result in my opinion is that we can directly set a QGLWidget as an OSG window using Traits::inheritedWindowData, but the event handling must be overrode, for example, using installEventFilter() to make sure OSG can communicate with Qt window. In this way maybe we will not have to use any adapters but only send a QGLWidget pointer to the traits like: osg::ref_ptrosg::Referenced windata = new osgQt::GraphicsWindowQt::WindowData(qtWidget); traits-inheritedWindowData = windata; osg::GraphicsContext* gc = osg::GraphicsContext::createGraphicsContext(traits.get()); And thus remove present GLWidget class and provides a clear solution to Qt developers. What do you think about that? Wang Rui 2012/11/8 Kristofer Tingdahl kristofer.tingd...@dgbes.com The example code works, my application (OpendTect) works. I do however have a couple of questions: 1. I never grasped the complexity of QGraphicsViewerQt::init, especially where we get the context from the traits, and gets the window, and then the osgQt::GLWidget from it (around line 550). It requires the QGraphicsViewerQt to have an getGLWidget just because of this, so I have reluctantly kept that function. 2. There were some context-handling that I did not fully grasp: In GraphicsWindowQt::makeCurrentImplementation() we did not check if the current context was identical to our context, while in GraphicsWindowQt ::runOperations() and swapBufferImplementation we did. I have kept this functionality with a bool on osgQt::WidgetAdapter:: makeCurrentImplementation, while I have feeling that this distinction is bogus, and the boolean argument can be dropped. 3. Who should own the Adapter? If it is a widget (as it is now with osgQt::GLWidget), then it normally owned outside, while if it not a widget (which is what I want), then it would ideally inherit osg ::Referenced. There are also a few more systematic changes I want to do on osgQt (which are not done yet). 1. On the CMakeList.txt level, I would want to have an option whether to use optimized Qt or not. We have both in our environment, and today it uses debug-qt with debug-osg and release-qt with release-osg. Most often we are not debugging qt, and it I'm thinking of an option: Use optimized qt. Default would still be what it is today. 2. I want to have support for global namespacing in Qt. Qt has support for always putting all Qt classes in a namespace, and we are planning on using that to avoid clashes between developers making plugins to our system and who want to use another Qt than we do. It would mean we make a set of macros that add the namespace in front of all Qt classes. Comments and suggestions are welcome! - Kristofer Tingdahl ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] problem with linear depth in fragment shader
Hi Peterakos, Try changing the internal format of the output buffer to float32. I guess it is a precision problem. During the SSAO implementation of effect compositor (in osgRecipes now) I also encountered the problem and using 32 bit float values seems good to me. Wang Rui 2012/11/9 Peterakos hay...@gmail.com Hello. I try to create linear values for depth using the following code: Vertex Shader float depth_in_eye_space = (gl_ModelViewMatrix * gl_Vertex).z; depth = (-depth_in_eye_space - near)/(far - near); //depth is varying Fragment Shader gl_FragColor = vec4(depth, depth, depth, 1); The problem is that in the depth texture, many different levels of depth are creating. (attached 1) That causes problems in my next pass which uses the depth texture to create an ssao image. (attached 2) How can i get the right depth values in depth texture ? Thnx. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Open Asset Import Library
Hi Michael, AssImp use a simpler scene graph to manage read data, in which one node could have a transformation matrix and multiple meshes, and multiple child nodes. Materials (including textures) are managed globally in a int, pointer map so objects could share one texture. But one mesh can only be linked to one material. I personally think Assimp will divide any object into meshes to support multiple materials if required, but I don't know Blender output would be handled in similar way in such case. Wang Rui 2012/10/25 michael kapelko korn...@gmail.com: Wang Rui, I research what format best to use for moving objects from Blender to OSG, and I see Assimp claiming to load Blender files directly. Since you said you wrote the plug-in already for it, I'd like to try it out. I have a follow up question: can I possibly differentiate Blender model from Blender material to have several skins for the same material in OSG? Does your plug-in do anything of the sort? Thanks. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG-3.0.0 Windows Prebuilt Installer
Hi, AlphaPixel has already provided complete OSG binary downloads for developers under Windows, Linux and Mac OSX: http://www.alphapixel.com/osg/downloads/free-openscenegraph-binary-downloads So I decide not to maintain another version of prebuilt binaries that may make beginners confused. The download link can also be found in the OSG 3.0 Cookbook. Thanks, Wang Rui 2012/10/13 Avit Hohol avitho...@live.com: ProfKebe wrote: Hi all, I'm actually reading the OSG 3.0 guide from Wang Rui, and I wanted to know if it was possible to get the v3.0.0 / v3.0.1 with the Windows installer (actually I can get only the v2.9.9 max.) ? Thank you! Cheers, JereM I do wait for the installer as well, i have also found the installer with v2.9.9. Do we know anything about a possible release data ? Thank you -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50588#50588 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] CompositeViewer multiple windows, same scene problem
Hi Alvaro, I just did a quick test under Windows 7, with OSG 3.0.1 and Qt 4.8.2. Two views (created from GraphicsWindowQt) of a CompositeViewer in two windows can render the same node (lz.osg for my case) smoothly. Could you please provide more information about your implementation? If you are going to render textures of view 1 directly in view 2, maybe you have to enable OpenGL's shared context feature. You may specify camera 1's graphics context to Traits::sharedContext in such case. Wang Rui 2012/10/4 Alvaro Segura aseg...@vicomtech.org: Hi, We are having trouble using a CompositeViewer with 2 views in 2 windows, showing the same scene (same Node*). The first view (in addView order) is rendered correctly, but the second view is badly rendered with some missing or garbled geometries. If only one view is added, its rendering is fine. If instead of 2 windows, we use only one window with two contiguous viewports, rendering is fine. Each view has its own Camera and GraphicsContext. We use GraphicsWindowQt with or without the shareWidget argument. Using setUpViewInWindow() instead does the same. Seems that the first render is misusing the GL context or something so that the other has trouble. Threading is set to SingleThreaded to avoid potential sharing problems (but the TaskManager is showing many running threads (?)). The problematic models are FBX exported from 3ds Max, BTW. Is there any setting that has to be set in OSG/CompositeViewer to tell it that the scene is shared? Does anyone have an idea what can be wrong in such a setup? Thank you! Alvaro -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50406#50406 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Help:why does renderbin affect the display of textures ?
Hi Shuiying, I guess that there may be something wrong in the draw implementation of drawable B. Although OpenGL calls can be executable in custom drawables, it is still suggested that you apply all kinds of rendering states to the drawable using StateAttribute derivatives. But without looking at some detailed code, I can hardly find out the actual reason inside. Wang Rui 2012/10/8 wang shuiying shuiying.w...@fu-berlin.de: Is nobody interested in this question?:-( Hello, I have two drawable nodes A and B under the same main group node. I mapped two different textures on the drawables respectively. Those two drawables do not have any overlappings in terms of pixels on the screen. Drawable A is described using open scene graph library while drawable B is described using openGL terms. Depth test is disabled by Drawable A and enabled by drawable B. Texture display on A uses a shader while B does not. When the renderbin of drawable A is set to be -1 and that of drawable B is 1, the two textures cannot show at the same time. That is to say, when I toggle on both drawable A and drawable B and make them both seen on the screen, the texture on drawable B doesn't show, but the color of B is correct. Under such circumstance, when I manipulate the view in a way such that drawable A is out of sight, then the texture on drawable B will appear. If I reverse the renderbins of those two drawables, then the textures can show at the same time. I just cannot figure out why this happens. If it is due to depth test, why should such conflicts happen, since they have no overlapped pixels on the screen? Even it is due to depth test, why is the color correct? Would someone please be so kind enough as to explain that to me? Thanks millions in advance! Best regards Shuiying ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] select point from pointcloud
Hi Markus, Default LinesegmentIntersector is unable to handle intersections with lines and points. But PolytopeIntersector which will require a rectangle on screen (or a polytope in space) may do the work for you. The OpenSceneGraph 3.0 Cookbook (Packt Publishing) introduces how to use custom intersector to select points in the last chapter. Unfortunately the whole chapter was removed at last because of page count limitation. But you can still find the source code from the Github repo and test it freely: https://github.com/xarray/osgRecipes/tree/master/cookbook/chapter10/ch10_07 Another way to do point selection effectively is to make use of the glReadPixels() function with depth component. You can then obtain the depth value(s) at your mouse point and compute real point coordinate when it is valid. Wang Rui 2012/10/1 Markus Ikeda markus.ik...@profactor.at: Hi, I'm new to OSG and I tried the osgkeyboardmouse example root/OpenSceneGraph/trunk/examples/osgkeyboardmouse/osgkeyboardmouse.cpp but I still couldn't manage to use the polytope intersector to select a subset of points via mouseclick in a pointcloud. Did anybody have the same problem and solve it ? Thank you! Cheers, Markus -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50360#50360 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Render passes and stereo handling
Hi Gaurav, A possible solution I think (but never tested it) is to set a draw callback to left/right render stage (stages can be obtained from camera-getRenderer()-getSceneView()-getRenderStageLeft(), and then use RenderBin::setDrawCallback... Oops). And you may know if left or right render stage is drawing in the callback and change your shader inputs in time. But this is really ugly and unsafe in multithreading mode... Maybe it is good for OSG to add a flag in RenderInfo to indicate if current drawing process is for left or right eye. And I just do wonder if there are some better ideas not to change your stereo inputs on the fly (maybe you can only change the contents and dirty them). Wang Rui 2012/10/2 Gaurav Chaurasia gaurav.chaura...@inria.fr: Hi, Is there a way to know which eye (left/right) is currently being drawn inside osg::Camera::DrawCallback. There is the UserData field in RenderInfo, but I don't think I can use it for my purpose without having to patch osgUtil::SceneView.cpp - the patch being that I update UserData before drawing each eye. Actually, I am doing render passes with render targets for a stereo application. So I need to switch shader inputs like textures,uniforms for each eye just before the draw call. I figured I can use the PreDrawCallback for the purpose because it is called inside RenderStage::draw just before the actual rendering happens. If someone has a cleaner solution, I would be most grateful. Thank you! Cheers, Gaurav -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50378#50378 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Backward compatibility with custom serializers
Hi Farshid, 2012/10/5 Farshid Lashkari fla...@gmail.com: Thanks Wang, Robert. How would I go about using the UPDATE_TO_VERSION macro in this scenario? My understanding is that the macro is used when the version of OSG is updated. However, the version of OSG is the same between the two versions of my application, it's just that the serialization support for my custom object was added in the newer version. Oh, this seems to be already discussed in another thread. I was thinking of implementing a user version macro at that time but then I was a little too busy to worked on it. I will consider adding a new UPDATE_TO_USER_VERSION macro to allow version control of custom serializers as soon as possible, maybe tomorrow. :-) Could this be a bug with current loader? I've attached a zip file that contains an ive, osgt, and osgb version of the same model. The ive loads and displays fine in 3.0.1, but as I mentioned, the osgt/osgb files do not display anything. Yes, this is a bug just found in osgWrappers/serializers/osg/Node.cpp, which uses UPDATE_TO_VERSION incorrectly so it also affects the following StateSet serializer. I think the brackets after the macro really confuses us and will do something soon to make it more readable. Thanks, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Backward compatibility with custom serializers
Hi Farshid, Unfortunately the InputStream doesn't have a good mechanism to handle unsupported class in binary files without the version control macro UPDATE_TO_VERSION (for IVE files, version control is supported internally in the plugin source code). Text files can ignore unknown class blocks because the advanceToCurrentEndBracket() method makes it possible to jump to next block. But for binary files, there are no straightforward flags to mark the beginning or end of a wrapper class' data. So I think adding UPDATE_TO_VERSION macro in your serializers would be the only way to keep compatibility at present. Wang Rui 2012/10/4 Farshid Lashkari fla...@gmail.com: Hi, I recently added serialization support for a custom osg::Object derived class in my application. I saved the object to a osgt and osgb file and attempted to load it into an older version of my application, which didn't have serialization support for my custom object yet. Loading the osgt file gives me the following warning message: InputStream::readObject(): Unsupported wrapper class MyLibrary::MyObject This is expected. However, when I attempt to load the osgb file I get the following output then my application crashes: InputStream::readObject(): Unsupported wrapper class MyLibrary::MyObject InputStream::readObject(): Unsupported wrapper class Before I spend time looking into this, I was wondering if it is expected for the binary loader to crash on unsupported objects? I'm working with osg 2.9.12, if that makes a difference. Cheers, Farshid ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN] osgRecipes: Integrate OSG with almost everything, the second wave
Hi Ricky and Michael, Yes, Hikari is Windows only as it uses COM to render Flash components onto bitmaps and then apply them to textures, which is of course of low efficiency. And it won't be able to support newer version of Flash because Adobe already closes the door to Flash COM programming. :-( Thanks, Wang Rui 2012/9/15 michael kapelko korn...@gmail.com: Hikari is Windows only: http://www.ogre3d.org/tikiwiki/tiki-index.php?page=Comparison+of+GUIsstructure=Libraries ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Ideas about a resource system, and deferred rendering framework
Hi Jeremy, I will add a setEnable() method for each technique and pass of the compositor so we can control the forward/deferred rendering work more accurately. A texture which is attached with certain pass won't be updated if the pass is disabled, and will become activated when the pass is enabled again. I may upload the new version this weekend and hope it will help achieve your goal. Wang Rui 2012/9/11 Jeremy Moles cubic...@gmail.com: On Tue, 2012-09-11 at 10:54 +0800, Wang Rui wrote: Are there ever cases, when doing sophisticated layering of rendering like this, that you'd want to manually kick off the EffectCompositor for just a single frame and update the texture only once? (For example, by setting the NodeMask to 0xF for one frame, then back to 0x0 when you're done updating the View). Is there a term for this kind of approach, and would it make sense to also support this model of rendering directly or should it be left up to the user? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] AntTweakBar with Opengl 3.2
Hi Peterakos, Sorry for a little late to reply the same question on GitHub. The AntTweakBar example currently use a camera draw callback to render UI elements. This may not be suitable for some practical uses, as draw callbacks won't keep its own state sets. Thus when you apply shaders to scene graph, the state will affect the AntTweakBar calls and make the final results invalid. A good idea to solve this is to reimplement this example using a custom drawable which render AntTweakBar in the drawImplementation() method. I will consider rewrite this example soon. And you are welcomed to contribute. :-) Thanks, Wang Rui 2012/9/12 Peterakos hay...@gmail.com: Hello. Has anyone managed to make AntTweakBar work with OpengGL 3.2 and the usage of shaders in the models ? Thnx. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN] osgRecipes: Integrate OSG with almost everything, the second wave
Oh, you mean GameSWF. Yes it is in my TODO list. But in fact GameSWF doesn't handle AS3 so it may not be enough for Flash UI needs. I was interested in Vektrix before, which provides a better framework for Flash and AS3 (using Tamarin), but it seems inactivated now. Thanks for the notification, Wang Rui 2012/9/12 michael kapelko korn...@gmail.com: I've just recalled that there also exist gameswf project which allows for Flash UI inside games. http://tulrich.com/textweb.pl?path=geekstuff/gameswf.txt Would be nice to see this one integrated. Would make a lot of hype with some easy flash demos :P ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Ideas about a resource system, and deferred rendering framework
Hi Jeremy, Thanks for the tests and feedback. I'm focusing on creating a material system which may be a little similar to the Ogre one but will be very easy to integrate with OSG scenes. I'd like to also have a benchmark including a complete deferred shading pipeline in the near future to show others how OSG produces realistic worlds. :-) Your requirement could be easiliy implemented with one forward pass rendering the scene to a texture, and two deferred passes doing the blur work with the texture as input. A final compositing pass will make use of the outputs of the blur passes and output to a new texture. You can get and use the new texture then in the scene for your own purpose instead of direct displaying them on screen. I'd like to upload a DOF effect file and an updated example some days later to demonstrate how these work. Thanks, Wang Rui 2012/9/11 Jeremy Moles cubic...@gmail.com: On Mon, 2012-09-10 at 22:57 +0800, Wang Rui wrote: This looks really cool so far. I'd be really interested to know if it supports the following (and would be willing to create examples if you're willing to help)... Scenario: I want to render an entire subgraph to an FBO texture once, then apply 2 or more completely different shaders in some order, then put the final result into a last texture to be used somewhere in the scene. I'm doing a guassian blur, which typically applies two different shaders for x and y. I have this working in osgPPU, but I think you already have enough to do it here, I just couldn't put the pieces together. :) ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] a bug or feature in the osgb writer?
Hi John,
Oh, so you are talking about the saving/reading of geometry shaders,
not just geometries. :-)
After checking the osg::Program serializer, I can confirm this is a
bug. As GL_POINTS is defined as 0, the serializer will ignore it as
incorrectly recognize it as GL_NONE. And when you load the file again,
the Program class will use a default value for GeometryInputType, that
is, GL_TRIANGLES.
I'll submit the patch to osg-submissions at once. You can also modify
the line at src/osgWrappers/serializers/osg/Program.cpp:
#define PROGRAM_PARAMETER_FUNC( PROP, NAME ) \
static bool check##PROP(const osg::Program attr) \
{ return attr.getParameter(NAME)!=GL_NONE; } \
to
#define PROGRAM_PARAMETER_FUNC( PROP, NAME ) \
static bool check##PROP(const osg::Program attr) \
{ return true; } \
and see if it can work.
Thanks,
Wang Rui
2012/8/28 John Kelso ke...@nist.gov:
Hi,
I apologize for the delay in responding.
Here's my attempt to provide a simple example. I am attaching the three
referenced files.
I run my program and dump the node in question into two files: dump.osgt and
dump.osg.
If I grep for Geometry in the two files I see:
dump.osgt:553: GeometryVerticesOut GL_GEOMETRY_VERTICES_OUT_EXT
4 dump.osgt:554: GeometryOutputType GL_GEOMETRY_OUTPUT_TYPE_EXT
5 dump.osgt:696:osg::Geometry {
dump.osg:49:GeometryVerticesOut 4
dump.osg:50:GeometryInputType POINTS
dump.osg:51:GeometryOutputType TRIANGLE_STRIP
dump.osg:661: Geometry {
That is, the osgt file seems to be missing the line
GeometryInputType GL_GEOMETRY_INPUT_TYPE_EXT 0
If I convert dumop.osgt file to an osg file and diff it with the original
osg
file I see:
diff dumpFromOsgt.osg dump.osg
46c50
GeometryInputType TRIANGLES
---
GeometryInputType POINTS
I think the problem is just in the writer, not the reader, because if I
manually add the missing line to the osgt file it works. And, it if convert
the modified osgt file to an osg file the input type is now points, not
triangles.
I seem to get the same results for osgb as I do for osgt.
I'm not sure how to answer the question about setVertexArray versus
setVertexAttribArray. But points.osg is the point data that's loaded.
I hope this helps. Please let me know if you need anything else that might
help with solving the problem.
Thanks,
John
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Re: [osg-users] OSG Serialization - changes on custom Classes
Hi Peter, I've just submitted a patch which adds user version to the serializers. Could you please have a look at it in the osg-submissions archive and test if it could work for your cases? Thank you, Wang Rui 2012/8/21 Peter Bako osgfo...@tevs.eu Hi mr. Rui Wang. Thank you for your help. It would be nice if we can set an auxiliary version number manually, when writing or reading files. This mechanism would be perfect! Can I assume that this modification will be implemented in the next month? Or what do you suggest to me to do? It is not time critical in the next month, but then it will be :-). This is a little off-topic, but why is the osg web page inaccessible? Trac detected an internal error: OperationalError: database is locked Thank you! Cheers, Peter -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49384#49384 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN] osgRecipes: Integrate OSG with almost everything, the second wave
Thanks Michael, As the libRocket integration is already implemented in the dtEntity project (code.google.com/p/dtentity), I'd love to make use of the existing one and avoid re-inviting wheels unless I myself just have different demands of the same library. So that's why I exclude libRocket from my TODO list, neither do Cairo, Pango, OpenAL, etc. Maybe you could have a look at dtEntity's implementation first and see if it could satisfy you and others. :-) Thank you, Wang Rui 2012/8/24 michael kapelko korn...@gmail.com Good work! I'm not sure if I voted for libRocket, so here it is. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN] osgRecipes: Integrate OSG with almost everything, the second wave
Thanks Frank. I'm downloading the new SDKs now, and will have a look at them as soon as possible. Wang Rui 2012/8/24 Frank Kane fk...@sundog-soft.com Happy to see our stuff on the list! When you get to it, please be sure to grab the new 1.5 release of the Triton Ocean SDK and 2.5 of the SilverLining Sky, Cloud, and Weather SDK that came out this week. I overhauled the OSG integration samples on both to take advantage of separate update / cull / draw threads and to get rid of their reliance on an icky projection matrix callback. It's a lot cleaner now. Thanks, Frank Kane Founder, Sundog Software,LLC http://www.sundog-soft.com -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49512#49512 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OSGT does not read nodemask
Glad to see the problem has been found and solved before I got to this mail. :-) Wang Rui 2012/8/24 Johannes Scholz johannes.sch...@vtxtech.net Hi, jup. If i have the time possibly tomorrow. Thank you! Cheers, Johannes --- Johannes Scholz Software Engineer P3 Voith Aerospace GmbH -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49476#49476 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG Serialization - changes on custom Classes
Hi Peter and Robert, I'm glad to consider a backward-compatible way to add custom versioning mechanism to current plugin. I would submit it as soon as possible so Peter and everyone else could test it and see if it suitable for pratical uses. Wang Rui 2012/8/23 Robert Osfield robert.osfi...@gmail.com Hi Peter and Rui, On 21 August 2012 12:59, Peter Bako osgfo...@tevs.eu wrote: It would be nice if we can set an auxiliary version number manually, when writing or reading files. This mechanism would be perfect! Can I assume that this modification will be implemented in the next month? Or what do you suggest to me to do? It is not time critical in the next month, but then it will be :-). As I have plenty of other work on my plate I'll defer to Rui to come up with a suggested solution, or yourself if you fancy rolling up your sleeves up. I do wonder if a user definable format key/string might be appropriate - I guess the schema and present version number take us a bit down this route, but perhaps one needs a list of schema or versions so that multiple layers can be added on for 3rd party libs can add their own feature set and rev it independently from the OSG versioning. This is a little off-topic, but why is the osg web page inaccessible? Trac detected an internal error: OperationalError: database is locked The openscenegraph.org server has been rather beset by problems so we are working on a replacement. Try the new openscenegraph.com when the .org version is down. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [ANN] osgRecipes: Integrate OSG with almost everything, the second wave
Hi all, I wish someone here still remember the osgRecipes project I've created and announced here some months ago. It included 9 different examples at that time, introducing how to integrate OSG with other 3rdparty libraries and APIs like Awesomium, Micorsoft Kinect, TUIO, AssImp, etc. Now I'm glad to tell you that there are another 9 examples out, with 9 completely new integration examples. They are: * Box2D: a nice 2D physics engine for games * Bullet: A professional multiphysics library, this example is very simple and completely different from the osgBullet project. * libGizmo: gizmo control library for 3D object manipulation, much lightweight than osgManipulator and really easy to use! * MicroPather: a path finder and A* solver, already included in the source code. Consider add AI to your OSG based games now? * MyGUI: a fast, flexible and simple GUI, as good as CEGUI, I think. * ngPlant: a plant modeling software, good for creating trees! * OpenNI: natural interaction devices middleware, another way to use Kinect! * OTL: ODBC template library, for DATABASE I/O with only a plugin! Only tested with Sqllite3 at present * RVO2: Reciprocal collision avoidance for multi-agent simulation. Thanks Christian Buchner for the original osgrvo2 example on osg-submissions All the examples are tested on Windows 7. Hope someone could help me test them on other platforms. You may download the project source code in public domain at: https://github.com/xarray/osgRecipes which is also the code repo of the book OpenSceneGraph 3.0 Cookbook. And see how these examples perform at: https://github.com/xarray/osgRecipes/wiki The TODO list of the third wave (still 9 eamples, I think) of osgRecipes is also listed here for someone who have interests: Berkelium, Microsoft DirectWrite, GUIChan, MathGL, OIS, Recastnavigation, ROBOOP, Sundog Silverlining Triton Call for more integration ideas now. :-) And glad to see some of the examples merged into the core OSG trunk, for example, the OTL database plugin (no dependency), and the AssImp and FreeImage plugins. Any attentions, feedbacks, and contributions are always appreciated. Cheers, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG Serialization - changes on custom Classes
Hi Peter, Oh there is another feature of the osgb plugin that I almost forget. :-) It supports serializer control using the version number. You may read about it at this page: http://lists.openscenegraph.org/pipermail/osg-submissions-openscenegraph.org/2010-November/007273.html Unfortunately the version number mentioned above will automatically be set to OPENSCENEGRAPH_SOVERSION, so unless the OSG soversion changed, all your modifications to your own serializers will not be separated. I guess we may have to modify the plugin source code slightly to add an option to allow setting the version number (or just an auxiliary version number) manually when writing/reading files to achieve your goal. Regards, Wang Rui 2012/8/21 Peter Bako osgfo...@tevs.eu Hi mr. Wang Rui. Thank you for your response. I am actually an owner of your OSG book :-). I tried your suggestion, it works, but the limitation is that we can have only 2 versions of osgb files (old format - with the schema) and the new (actual format). Does this mean that there is no way to make more versions readable for my application? For example, could we generate schema for every version and try to load the file with the schema from the oldest version, if not succeed, then with the newer version, then with newer and so on until the load is successful (loaded component is not NULL). I don't see under the hood of binary serialization, I couldn't find the correct file. I need this functionality because I know, that my application will grow after release and maybe we will need to change the serialization after the release to the customers. Do you have any other idea to make this possible? Thank you once more! Cheers, Peter -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49376#49376 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Problem with loading 3d-models with asian characters in file name.
Hi Carsten, The OSG_USE_UFT8_FILENAME option actually doesn't work with Asian directory names, unless your source files are also UTF8. Sometimes I use the setlocale() function at the beginning of an application to choose current machine's locale, like the following: std::locale::global( std::locale(, std::locale::all ^ std::locale::numeric) ); Or directly select the Simplified Chinese locale: setlocale( LC_ALL, .936 ); Hope it helps. BTW, I found the latest OSG works well with Chinese directories and filenames. Maybe you could give it a try again. Wang Rui 2012/8/20 Carsten Scharfe cscha...@dspace.de Hi, I hope somebody can help me out with this nasty problem. I try to load model file (e.g. a collada file) which has some asian characters in its file name. Although I’ve compiled Osg with OSG_USE_UFT8_FILENAME set to true, no model is loaded. osgDB::readNodeFile just returns an empty node as result, saying that the file was not found. A filename like E:\3dlibnew\$龙\龙.dae is received as E:\3dlibnew\$?\?.dae even in our own application. Do I need to do additional conversions? Please help me. Any advice is welcome. I’m using Osg 3.0 on Win7. Regards, Carsten ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG Serialization - changes on custom Classes
Hi Peter, Yes, there is a schema mechanism in the osg plugin which could record a serializer name list (a schema) at the beginning of every .osgb file and the reader will automatically check and read the schema to decide each serializer order and existence. For your situation, the best way I think is to generate a schema file first using the option: writeNodeFile(*node, file.osgb, new osgDB::Options(SchemaFile=old_version_format.txt)); This could be done only once when you save a .osgb file. Note that the schema file should be created with the old version of plugin. And then you may read all old .osgb files with the new version of plugin, using the same option: readNodeFile(file.osgb, new osgDB::Options(SchemaFile=old_version_format.txt)); And the schema will be used to load old version files correctly. Wang Rui 2012/8/20 Peter Bako osgfo...@tevs.eu Hello guys, I am using OSG serialization on my custom classes derived from osg::MatrixTransform and osg::Geometry. I already use this serialization for some time, so I have many .osgb files exported on my disk, but now, I want to add some new properties to my Class and serialize them (new ADD_BOOL_SERIALIZER). The problem is, that I cannot load the old .osgb files anymore. It works only on .osgt files. Is there any way, how to extend my serialization, while the old files will be still loadable? Thank you! Cheers, Peter -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49338#49338 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Is it possible to do boolean operations with objects (primitives)?
Hi, OpenCSG is good enough to perform stencil-based CSG operations at realtime. But it is difficult to integrate it with OSG because OpenCSG maintains a rendrable list itself. The only way I think is to get the renderbin list deeply in the OSG core and transfer it to OpenCSG, but it is absolutely a terrible idea. That's why I exclude this library from the osgRecipes plan. :-) Wang Rui 2012/8/21 Chris Hanson xe...@alphapixel.com http://www.opencsg.org/ -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] a bug or feature in the osgb writer?
Hi John, 2012/8/11 John Kelso ke...@nist.gov and the ive run has the line Using vertex attribute instead repeated eight times. I doubt this has anything to do with it, as the ive file is the one that works, but you never know... I've looked up in the source code and find that the line will be printed in Geometry::accept(PrimitiveFunctor functor). So I wonder if you don't set vertex array with the setVertexArray() method but instead set it with setVertexAttribArray()? I haven't tested such situation with the osgb format but I don't think it will confuse the writing process... It will be appreciated if you could provide a small piece of your osg/ive file for us to find out where the problem is. Thanks, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Problem with deferred rendering
Hi Daniel, Why not first have a look at the osgRecipes project which is also the code repo of the book OpenSceneGraph Cookbook. It does has a very simple deferred shading example in chapter 6. The book may require you to buy it but the code is totally free at: https://github.com/xarray/osgRecipes/tree/master/cookbook/chapter6/ch06_12 Wang Rui 2012/7/5 Daniel Schmid daniel.sch...@swiss-simtec.ch Hi Sebastian You were talking about a deferred shading example. Do you have any example code you could provide? I'm just about to start with deferred shading and I'm very interested in having a look... Regards Daniel Sebastian Messerschmidt wrote: Hi Micael, Feel free to ask If you encounter more problems. I was just planning to provide a minimal deferred shading example to the community, but unfortunately I'm busy with other stuff right now. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48709#48709 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 139.com Spam
Hi Jan, Yes, 13488874230 13488874...@139.com is a phone number, and unfortunately it is completely a telemarketing number. I'm sure it is NOT from someone related to OSG and I think it was probably registered at the forum. Could anybody help check it? By the way, I wrote a letter to 139.com last week but receives no replies from them. You know, it is the China Mobile and it will never notice us small potatoes :-( Wang Rui 2012/6/26 Jan Ciger jan.ci...@gmail.com Hi Robert, On Tue, Jun 26, 2012 at 3:41 PM, Robert Osfield robert.osfi...@gmail.comwrote: Hi Jan, The posts aren't coming through the list, I think they are being sent directly. The are anyone subscribed from a 139.com domain so my initial expectation that someone subscribed from that domain is causing problems, so I can only guess is that perhaps someone has redirected posts to a 139.com account. Perhaps it's something that is going via the forum in some way. I really don't know the cause though. There is nothing I can do about the issue are it isn't a mailman issue so it's something that users will just have to flag locally as spam. Thanks for a quick reply and check. I guess someone is forwarding some notifications to their cellphone and their braindead system sends the bounces to the original author of the mail and not to the list (which would be equally stupid, but lots of software does that - vacation responders ...) I got the most recent one from: 13488874...@139.com in reply to the file format thread. I suspect that the number is the phone number of the person, perhaps some of our Chinese members could check and call the gent explaining him the situation? Best regards, Jan ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 139.com Spam
Hi, More searches show that the phone number also appears on the following Chinese bolg: http://mayun198.bokee.com/ No need to translate it into English, it is totally about 'how to make money out of thin air'. :-) I just wonder if the blog name 'mayun198' or something similar could be the real username in the osg-users. Maybe it has an internal link with the 139.com mail and thus send useless mails to us all the time. Wang Rui 2012/6/26 Wang Rui wangra...@gmail.com Hi Jan, Yes, 13488874230 13488874...@139.com is a phone number, and unfortunately it is completely a telemarketing number. I'm sure it is NOT from someone related to OSG and I think it was probably registered at the forum. Could anybody help check it? By the way, I wrote a letter to 139.com last week but receives no replies from them. You know, it is the China Mobile and it will never notice us small potatoes :-( Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Ideas about a resource system, and deferred rendering framework
Hi Fred and Sergey, Thanks for the great information. I viewed the Rembrandt wiki page and love the design of the effect files. I will consider merge some of the concepts of Rembrandt if possible, along with current osgPPU and osgPostEffects projects, to try designing an extensible system for all. I would like to submit some of my initial code here for all of you to review and see if it could fit everyone's taste. I hope I could have done that in the following week. Thanks, Wang Rui 2012/6/22 Frederic Bouvier fredlis...@free.fr I was going to raise that point. Flightgear has for some years now a system where designers can express their statesets in XML files called effects. A statesets is called a Pass in FG (or a FG Pass is implemented with a stateset). You can add multiple passes in a Technique, allowing you to redraw the same geometry with multiple statesets (including render bins details). An effect file gathers multiple techniques that have a predicate, based on supported extensions and internal FG switches, which is evaluated at run time. The multiple techniques allow us to render the water or the urban areas differently based on user preferences and GPU capabilities. Beside that effect system, we introduced a deferred renderer called 'Rembrandt' (currently still experimental but it will be present in the next release in August) where the different stages of the renderer are also described in XML. In that XML we can add rendering buffers (textures for RTT), specify rendering orders and assign effects to stages. The default pipeline has boom and ambient occlusion that can be switched on and off at run time. If you have any question, you can consult the wiki page or ask Regards, -Fred - Mail original - De: Sergey Kurdakov Hi Wang, might be not quite a significant point, but osg based Flightgear has a ongoing Project Rembrandt http://wiki.flightgear.org/Project_Rembrandt it has some similar things done, so could serve for inspiration. Regards Sergey ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Ideas about a resource system, and deferred rendering framework
Hi Robert, hi all, During the past few days, I was thinking of implementing a resource system, as well as a rendering structure which could support both forward and deferred rendering for OSG. This could help developers design complex materials and effects, test cutting-edge GPU techniques, and implement multi-pass / deferred rendering pipelines with user-friendly interfaces or even a readable script format. Similar work were already done in some game engines like Ogre3D, CryEngine and Unreal, and I now plan to work out something with the same power and can fit our OSG users much better. :-) My initial thoughts are: 1. A resource system records all the resource used in the rendering pipeline, including textures, state attributes, shaders, uniforms, camera parameters, and semantics (not used in GLSL, but very useful IMHO). Resource can be referred by other resource, or obtained from APIs to be altered. It can be recorded in an XML-based format for reading/writing, and external uses. 2. A rendering framework uses one or more techniques, passes, and connect their inputs/outputs for complex render work. It can also be recorded by the resource system and is implemented as a group node in the scene graph, which performs actual forward/deferred rendering work. 3. Some in-built techniques and passes can help implement some complex effects on customized scene quickly. Common ones I planned include HDR, SSDO, godrays, depth of field, motion blur, lensflare, color grading and FXAA. A benchmark could be developed first to show how the framework works. 4. Reader/writers could be developed then to convert DAE, CGFX, or even other game engine scripts into OSG native rendering pipelines, which will greatly help migrations from other engines. The resource system itself is actually abstract and can be extended to contain whole scene information later, so it could be placed in the osgDB library. And the new rendering pipeline, which can totally replace current osgFX functionlities, can be placed in osgFX and rendering resource management will be done here, too. I'm glad to work with others who has interests in such an idea, and hope an initial version could be finished before OSG 3.2. For the first stage I will borrow some code from the osgPostEffects library in my experimental osgXI project, to quickly build the low-level APIs of the framework. But anyone who have better ideas, or could contribute some code or effects will be really appreciated. Cheers, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN] osgRecipes: Integrate OSG with almost everything :-)
Hi Christian, Thank you. So I would add osgrvo2 to this new project as soon as possible, with your copyrights preserved. Wang Rui 2012/6/21 Christian Buchner christian.buch...@gmail.com Permission granted to use my osgrvo2 integration example (massive agent simulation) Christian ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Ideas about a resource system, and deferred rendering framework
Thanks Bryan, Yes, I paid close attention to osgPPU since it appeared. I believe it would be very helpful for me to design the framework, although the script system we are going to use may differ. :-) Wang Rui 2012/6/21 Thrall, Bryan bryan.thr...@flightsafety.com Wang Rui wrote on 2012-06-21: 2. A rendering framework uses one or more techniques, passes, and connect their inputs/outputs for complex render work. It can also be recorded by the resource system and is implemented as a group node in the scene graph, which performs actual forward/deferred rendering work. It seems like osgPPU already does this; you might want to look at it to see if it meets your needs, or at least could inspire what you're doing. Hope this helps! -- Bryan Thrall Principal Software Engineer FlightSafety International bryan.thr...@flightsafety.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [ANN] osgRecipes: Integrate OSG with almost everything :-)
Hi all, I'm glad to announce a new project I'm working on in the scope of osgRecipes (also the repo of the book OpenSceneGraph 3 Cookbook): https://github.com/xarray/osgRecipes/tree/master/integrations Its main and only goal is to integrate as more as possible third-party libraries/SDKs with OSG to make use of both features. It is in public domain, so feel free to make use of everything here. :-) All example code here will show how to integrate OSG with different kinds of libraries and SDKs in a simple enough and extendible way, that means, there will be few lines of code for each recipe to make them understandable. Such external libraries can quickly add extra functionalities like special effects, visual components and interaction methods to your OSG scenes and greatly improve the performance of the applications. Current third-party libraries that are embedded within OSG are listed here: * AntTweakBar (a light and intuitive GUI framework): http://www.antisphere.com/Wiki/tools:anttweakbar * AssImp (a library to import various well-known 3D model formats): http://assimp.sourceforge.net/ * Awesomium (a web-browser framework for in-app browsing and HTML UIs): http://awesomium.com/ * FreeImage (a library supporting popular image formats): http://freeimage.sourceforge.net/ * Microsoft Kinect SDK: http://www.microsoft.com/en-us/kinectforwindows/develop/developer-downloads.aspx * NVIDIA PhysX (a well-rounded physics engine, version 3.2): http://developer.nvidia.com/physx-downloads * Spark (a crossplatform particle engine): http://spark.developpez.com/ * TUIO (a common API for tangible multitouch surfaces): already included in the source code * VLC (a cross-platform multimedia player and framework): http://www.videolan.org/vlc/ And these are on my TODO list. Anybody is welcomed to add more here, or just contribute your own works: Animata, Microsoft DirectWrite, GUIChan, libGimzo, MyGUI, openNURBS, Sundog Triton, Woody3D... All the libraries must be free for downloading and for non-commercial purpose of use to be added into the project. Also as far as I know, there are also some good integrations like OSG+libRocket, and OSG+libRVO2, I would like to merge them, too, or just have a link in my project, if allowed. I'm also very glad to see some of the examples merged into the core OSG trunk, if Robert think it possible. :-) Any attentions, feedbacks, and contributions are always appreciated. And it is often existing to see more and more cool stuffs works in OSG. Cheers, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN] osgRecipes: Integrate OSG with almost everything :-)
Hi Michael, I also recall that their is someone working on OSG and libRocket so I don't put it in my TODO list. :-) I'm going to first consider some other GUI libraries like MyGUI, and... HTML5 and Flash? The project page is : https://code.google.com/p/dtentity/. Maybe you could just check if his implementation is good enough. Wang Rui 2012/6/19 michael kapelko korn...@gmail.com Great news! Although, I would really like to see OSG + libRocket integration since GUI is lacking in OSG :) I recall there was a guy who wrote dtEntity thing which has OSG + libRocket integration, but I'm unsure how well it supports it. I'll be doing OSG + libRocket research myself in the coming months, so it's only good to omit such task by having it already supported. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 139.com Spam
Hi Robert, I've already wrote a mail to t...@139.com but I don't think they will reply quickly enough, as 139.com in fact belongs to a huge state-owned company (China Mobile) who always ignores others' feelings ;-( Is it possible that this address is registered to the forum and the mail is forwarded from there? Wang Rui 2012/6/8 Robert Osfield robert.osfi...@gmail.com Hi Rui, On 8 June 2012 05:03, Wang Rui wangra...@gmail.com wrote: I also received the email and fortunately I can speak Chinese. The mail is sent from the 139.com administer and it said that a registered user with the address 13488874...@139.com here is not active, but we still sent mail to him (I think this is because the mail list server automatically send every mail to him), so the 139.com server automatically replied with the notice. A best way to solve it is to remove the inactive user from our mail list. Robert if you couldn't find him, I'll try to contact with their manager to explain the situation. There isn't anyone subscribed to osg-users and osg-submissions with a 139.com domain, let alone this specific address. Could it be another address that is subscribed is forwarding to the 13488874...@139.com address? Thanks for looking into it, Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 139.com Spam
Hi all, I also received the email and fortunately I can speak Chinese. The mail is sent from the 139.com administer and it said that a registered user with the address 13488874...@139.com here is not active, but we still sent mail to him (I think this is because the mail list server automatically send every mail to him), so the 139.com server automatically replied with the notice. A best way to solve it is to remove the inactive user from our mail list. Robert if you couldn't find him, I'll try to contact with their manager to explain the situation. Wang Rui 2012/6/8 michael kapelko korn...@gmail.com May be someone who can talk in Chinese can tell 139.com to shutdown this spam thing? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Open Asset Import Library
Hi Chris, Oh, I'm just working on a new integration project of OSG and different kinds of 3rdparty libraries. Ande I've already wrote plugins of FreeImage and AssImp, as I think both are great for importing and exporting, too. https://github.com/xarray/osgRecipes/tree/master/integrations Unfortunately I haven't had time to test my AssImp plugin yet (the FreeImage one works well now and I'll try to submit it soon), so if you think it valuable and possible for use, please don't hesitate to test it and help me improve it. :-) Cheers, Wang Rui 2012/6/7 Chris Hanson xe...@alphapixel.com http://assimp.sourceforge.net/main_features.html Anybody used this? Might be interesting to begin an optional plugin to load files via this library, if you have it. Some of its importers might be more modern or more fully fleshed out than some of our native ones. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Building new website, assistance appreciated!
Hi Robert and all, I'm now ready to help build the new website. :-) As a publisher, I tried editing page in the main/community section and can confirm it worked. But when I was going to add a new page, I couldn't find a button or a panel for managing the add/remove operations. I have little experience of Joomla but it seems that I could add new pages in administrator mode, which is not available for publishers. So I'm just interested in that how could a publisher get permissions of adding/removing a page without entering the admin page? Or did I miss something important when logging in and browsing the pages. Any help and advice would be appreciated. Thanks, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Render Scene in Maya's Viewport
Hi Bo, In the source code of OpenSceneGraph Cookbook you will find an example which shows how to integrate an OSG scene view into a GLUT rendering loop. Hope it can help: https://github.com/xarray/osgRecipes/blob/master/cookbook/chapter9/ch09_06/osg_in_glut.cpp By the way, it is really interesting to see OSG in a Maya scene. :-) Cheers, Wang Rui 2012/5/24 Bo Zhou pap...@126.com Hi, I'm trying to integrate osg into a MPxLocatorNode in Maya, draw an osg scene by MPxLocatorNode::draw method. According the Maya's document, we just need to call glVertex3f or glDrawArrays API and do not need to setup any modelview, projection matrix, or viewport to OpenGL, just draw geometry data. So how could I finish this task ? Could anybody help me ? Thanks ! Thank you! Cheers, Bo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47830#47830 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Building new website, assistance appreciated!
Hi Jordi, That's great! Now I can see it. Thanks, Wang Rui 2012/5/26 Jordi Torres jtorresfa...@gmail.com Hi Wang et al, Now, once you are logged in, you should see a new item in the login menu in the front end (if you have at least author permissions) called 'submit article'. It Is very important to select the adequate category, this way it will be shown 'in place'. Cheers. 2012/5/25 Jordi Torres jtorresfa...@gmail.com Hi Wang Rui, I answer myself, admin Backend is not active for publishers. But I see you have admin rights, so you should be able to access. Anyway we should add a menu item (for authors and publishers) in order to submit articles from the front end. I will do it as soon as possible. Cheers. 2012/5/25 Jordi Torres jtorresfa...@gmail.com Hi Wan Rui, 2012/5/25 Wang Rui wangra...@gmail.com Hi Robert and all, I'm now ready to help build the new website. :-) As a publisher, I tried editing page in the main/community section and can confirm it worked. But when I was going to add a new page, I couldn't find a button or a panel for managing the add/remove operations. I have little experience of Joomla but it seems that I could add new pages in administrator mode, which is not available for publishers. So I'm just interested in that how could a publisher get permissions of adding/removing a page without entering the admin page? Or did I miss something important when logging in and browsing the pages. You are right, in the case of list layout you should not have problems ,a icon of new document is available (for example : http://www.openscenegraph.com/index.php/documentation/platform-specifics/linux). But for blog layout we have to enable it using a menu key or installing a module to manage articles from the front-end. I'll do it ASAP. Is not active the admin backend for publishers? Cheers Any help and advice would be appreciated. Thanks, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Jordi Torres Fabra gvSIG 3D blog http://gvsig3d.blogspot.com Instituto de Automática e Informática Industrial http://www.ai2.upv.es -- Jordi Torres Fabra gvSIG 3D blog http://gvsig3d.blogspot.com Instituto de Automática e Informática Industrial http://www.ai2.upv.es -- Jordi Torres Fabra gvSIG 3D blog http://gvsig3d.blogspot.com Instituto de Automática e Informática Industrial http://www.ai2.upv.es ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] ViewDependentShadowMap
Hi Daniel, Original VDSM may not work well with huge terrain and city models as I just tested it some time ago, but I'm too busy these few days. PSSM must be implemented to allow higher resolution near to the viewer, and projective/persp aliasing can hardly be removed without more changes to the model itself. I've just uploaded an initial version of modified VDSM on osg-submissions but not merged currently. You may have a look at it in the mail list. Wang Rui 2012/4/11 Daniel Schmid daniel.sch...@swiss-simtec.ch Hi all ** ** Somehow I feel pretty alone out here working with VDSM… ** ** I have a huge paged terrain, and shadow looks awesome unless that as soon as I change my viewpoint (move camera), the shadows start to flicker and fuzz. I need somehow to limit the shadow distance… similar to MinimalShadowMap where you can set min max clip plane. I tried to modify computeShadowCameraSettings method by setting the xyzMinMax values fort he projectionMatrix to fix values, but this didn’t bring much success. ** ** Does anybody have a modified or advanced version of VDSM with a clipping limit ? ** ** Regards Daniel ** ** ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN] OpenSceneGraph 3 Cookbook Published!
Hi Christian, Thanks for the support. 2012/4/5 Christian Buchner christian.buch...@gmail.com Here is some nitpicking. Spelling errors like phone shader (should be phong) or salve instead of slave. So it appears spell checking was mostly automated, and not thoroughly checked by human proofreading. In fact we have a text editor from the Packt team. Unfortunately he is not a 3D programming expert so maybe he just think 'phone shader' is a kind of telecommunication method. :-) I hope those spell mistakes won't affect your reading and you can at any time send those bugs to the Packt feedback center, I think. Also what really bugs me is that the interesting GLSL shader code is often abbreviated with // Please find details in the source code. For some examples the shaders are at the heart of what is presented (e.g. bump mapping technique), so this is a little annoying. The most annoying thing is the page limitation. I even have to delete a total chapter because the book itself is limited to 400 pages at most. These annoying comments are also to reduce the page count. Sorry for bringing the troubles. Thanks, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [ANN] OpenSceneGraph 3 Cookbook Published!
Hi all, First of all, this is NOT a joke on April Fool's Day. :-) I'm glad to announce the publication of the book OpenSceneGraph 3.0 Cookbook, which is yet another OSG book written by me, with the help of Dr. Qian Xuelei. Thanks to my technique reviewers: Torben Dannhauer, Vincent Bourdier, and Chris Hanson. Also many thanks to Robert Osfield and the whole OSG community! Exactly 100 recipes are introduced in this book (some may not appear in any of the pages because of the page count limitation, please refer to the source code repo). You should be familiar with the basic concepts of the OpenSceneGraph API before reading this book as it includes some advanced techniques like a initial deferred shading implementation, quick integration with physics engines, and so on. There are totally 9 chapters focusing on different fields, including the installation, nodes, geometries, camera manipulating, animations, effects, terrain building, data management, GUI integration, and a bonus chapter which is removed from the book content because of the too high page count but added as a free sample chapter on the Packt website. You can buy the book at the Packt Publishing website: http://www.packtpub.com/openscenegrap-3-for-advanced-3d-programming-using-api-cookbook/book and/or Amazon.co.uk: http://www.amazon.co.uk/OpenSceneGraph-3-Cookbook-R-Wang/dp/184951688X The source code can be downloaded freely at: https://github.com/xarray/osgRecipes Cheers, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgShadow PSSM
Hi Daniel, Currently I'm working on the ViewDependentShadowMap and has already added an initial implementation of PSSM and VSM. I'm using it with my digital city project which must have huge scenes and multi-threaded rendering features. I'd like to submit the changes some time later. :-) Wang Rui 2012/3/23 Daniel Schmid daniel.sch...@swiss-simtec.ch Hi there ** ** Obviously PSSM is good for huge scenes (my case), but the wrong choice for multi threaded rendering. Is there a attempt to make PSSM multithreaded, does anybody have modified it, or what would be the way to go ? ** ** Regards Daniel ** ** ** ** ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgShadow PSSM
I would submit the code this weekend and everyone can have a look at it and make changes to make it better (at present I'm still not satisfied with my own implementation). Wang Rui 2012/3/23 Daniel Schmid daniel.sch...@swiss-simtec.ch So you are mixing PSSM and VSM? Sounds interesting. If you have any sample code I could have a look at, I would appreciate… ** ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] A crash problem while using SharedStateManager in the DatabasePager
Hi Robert and all, I've encountered a crash problem while managing and rendering huge scene in OSG. To make it work smoothly, I use both the IncrementalCompileOperation and SharedStateSetManager to help improve the paging process. Both my application soon crashes when the camera is moving over the scene quickly (which means the scene data is also quickly and frequently loaded and unloaded). I debug into it and surprisingly find that the databaseRequest-_loadedModel is sometimes empty in the DatabasePager::addLoadedDataToSceneGraph() and thus causes the issue. I add a determination before using the SharedStateManager to optimize the model and the problem seems disappeared: if (osgDB::Registry::instance()-getSharedStateManager() databaseRequest-_loadedModel.valid()) osgDB::Registry::instance()-getSharedStateManager()-share(databaseRequest-_loadedModel.get()); I suggest make such changes in the trunk, too, so we won't meet the same crash problem again. But it in fact doesn't find the truth: when and how a request in the _dataToMergeList list is changed and the loaded model pointer is made invalid? I'm just curious about the reason why the _loadedModel is reset unexpectedly. Is there any other possibilities? Regards, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Methods to improve large scene shadows with ViewDependentShadowMap
I finally find the reason of my second issue (the shadow disappears some
time, because of the view matrix computation from the light) and already
submit a patch for both problems. Now I'd like to try to work out a more
comfortable shader solution for this great shadow technique and see if it
could make the life better. :-)
Wang Rui
2012/3/14 Wang Rui wangra...@gmail.com
Hi Robert,
Some comments on my last post. It may not be a projection matrix
problem... I've found that in the ViewDependentShadowMap.cpp file,
implementation
of class ComputeLightSpaceBounds:
void update(const osg::Vec3 v)
{
if (v.z()0.0f)
{
//OSG_NOTICEdiscarding(v)std::endl;
return;
}
...
}
Should it be v.z()-1.0 here as the clipping space coordinates are in
the range of [-1, 1]? I changed this line and it works for me; otherwise
the city on earth will be splitted in a strange way as shown in
the attached snapshot.
But I'm still struggling with another serious problem that the whole
shadow map may disappear suddenly when I'm looking with a horizontally
view from the opposite direction of the light vector. I checked the code
and surprisingly found that the ComputeLightSpaceBounds returns an
invalid bounding box in such case. That means the entire scene may be
culled as in the light space frustum? I'm just confused now but will go on
tomorrow.
Any good ideas about that? :-)
Wang Rui
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Re: [osg-users] Methods to improve large scene shadows with ViewDependentShadowMap
Hi Robert, I've made some tests today and gradually know my problems, but feels thorny to solve them. :-) The shadowed scene looks good when it is displayed separately. Although there are still aliasing when tilting the view point to have a horizontally view, I think one of the cause is the precision from the near to the far plane, and can bear or resolve it with some blurring methods. But when I place the city on the earth and try to make shadows on it (the earth tiles are not included as shadow casters or receivers), there is one major problem: the shadow may disappear suddenly when I'm adjusting the look-at vector for horizontally views. This issue always occurs when I'm in the opposite direction of the light. I tried following the code in ViewDependentShadowMap and guess it is still related to the near/far computation, as in my scene graph, the far plane value may be extremely large because of the earth radius. I don't have a proper solution for that case but wonder if we could have a callback/option in ViewDependentShadowMap to enable setting user-defined projection matrices instead of reading them from the cull visitor, with which we can set up the light frustum to have a fixed near/far pair instead of a changing one. As shadows are meaningless when they are far away from the viewer, I think this is suitable for most cases and can help improve the shadow quality when handling large scene cases. The theory of PSSM and CSM algorithm may help, but at present I think they are not implemented in the ViewDependentShadowMap class (yes, we have the PSSM but it has problems working with RTT cameras at present :-) Wang Rui 2012/3/12 Robert Osfield robert.osfi...@gmail.com HI Rui, Thanks for the links to the data, I will download and have a experiment later, most likely tomorrow as I have to go out quite soon. The screenshot is suggests to me that the main artefact is simply that the shader used/fixed function pipeline isn't computing the shadowed colour correctly and would disappear if appropriate shaders were used to make sure the back facing triangles are coloured the same as the shadowed region. When using the standard fixed function pipeline you just get black for the shadowed around so the result always has this artefact. Robert. On 12 March 2012 13:20, Wang Rui wangra...@gmail.com wrote: Hi Robert, I'd like to provide a set of city models for shadow tests. It is already constructed with paged LODs so can be viewed smoothly on my Windows 7 and GTX 460. I've uploaded it at box.com, totally two compressed packages: http://www.box.com/s/s1bnf4eqenrc30opxzj4 http://www.box.com/s/ubu4186593fjc8tslntq Of course tarballs are not suitable for public test. It should be comfortable if we could load and render the city from an HTTP address, just like the earth_bayarea example dataset. The snapshot attached shows that most of the shadows are at the right place but some with obvious aliasing issues and streaks (as on the right bottom side). Cheers, Wang Rui 2012/3/12 Robert Osfield robert.osfi...@gmail.com Hi Rui, Artifacts can be caused by a number of different reasons, as I have seen the models, screenshots of the artefacts I don't feel comfortable pointing at any particular cause or solution. Having a public model we can test against would be very useful. Also modifying the osgshadow example to have a unit test for these case would also be useful. Given a unit test we as group can start refining things for the problem cases. As a more general note ViewDependentShadowMap doesn't yet provide shaders that resolve the issue correct lighting of shadows, the thread you link to discusses this topic. Introducing the required shaders as an option into ViewDependentShadowMap would address one of the areas that artefacts can be seen when users don't provide their own shaders that do the lighting correctly. This won't solve all the potential artefacts that we see when doing shadow mapping but it would at least discount one possible set of problems. Robert. On 12 March 2012 09:38, Wang Rui wangra...@gmail.com wrote: Hi all, I'm currently working on an example that uses osgShadow::ViewDependentShadowMap for generating dynamic shadows on a large area of buildings. It can work correctly on a huge city which is created by CityEngine and then converted to OSG styled scene graph. It also generates aliasing issues as expected, but I'm still looking for some good solutions to reduce such problem and want to discuss them in this thread if possible. My test program and a simple shader file can be found in attachement. I've already read a similar topic at: http://lists.openscenegraph.org/htdig.cgi/osg-users-openscenegraph.org/2011-August/053731.html And I believe it is necessary to apply some filters on the shadow map (the test shader file simply uses PCF
Re: [osg-users] OSG within firebreath?
Hi Paul, Also have a look at the source code of the coming book OpenSceneGraph 3.0 Cookbook. It has an initial implementation of integrating OSG and FireBreath under Windows. :-) https://github.com/xarray/osgRecipes The book link: http://www.packtpub.com/openscenegrap-3-for-advanced-3d-programming-using-api-cookbook/book Wang Rui 2012/3/14 Paul Griffiths gaffe...@gmail.com Thanks for the link. Don't think ill be using firebreath, seems a bit of a overkill considering its windows only. Theres next to nothing on the osg forum about osg and web browsers, which is quite surprising if not shocking! :O Anyone have any code to share for browsers internet explorer, firefox and any others on other systems other than windows? If not ill get my head down, pretty good at this sort of stuff. cheers. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=46226#46226 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Methods to improve large scene shadows with ViewDependentShadowMap
Hi all,
I'm currently working on an example that uses
osgShadow::ViewDependentShadowMap for generating dynamic shadows on a large
area of buildings. It can work correctly on a huge city which is created by
CityEngine and then converted to OSG styled scene graph. It also generates
aliasing issues as expected, but I'm still looking for some good solutions
to reduce such problem and want to discuss them in this thread if possible.
My test program and a simple shader file can be found in attachement.
I've already read a similar topic at:
http://lists.openscenegraph.org/htdig.cgi/osg-users-openscenegraph.org/2011-August/053731.html
And I believe it is necessary to apply some filters on the shadow map (the
test shader file simply uses PCF here) and increase the texture resolution
as well. But for huge scene, a 4096-sized RTT texture will be a heavy
burden. So I wonder if there are some more methods to choose, for example,
is it possible to change the internal format of the texture to
GL_DEPTH_COMPONENT32 to improve the shadow comparision process?
Meanwhile, is it necessary to perform a screen space blurring to reduce the
aliasing effect? It is a serious problem for my scene now as I can't use a
very high resolution. Could anyone suggest some other possible methods on
the post-processing level? To be honest, the ViewDependentShadowMap is the
best shadow solution for me at present as it is easy to be integrated with
custom shaders and embedded into a deferred shading framework.
The test city models are about 180MB. If any of you think it important for
digging into the problem. I'd like to share them freely, too, as I believe
these automatically generated models should not have any copyrights with
them. :-)
Cheers,
Wang Rui
#include osg/AnimationPath
#include osg/PolygonMode
#include osg/Texture2D
#include osg/Geometry
#include osg/Geode
#include osg/MatrixTransform
#include osgDB/ReadFile
#include osgShadow/ShadowedScene
#include osgShadow/SoftShadowMap
#include osgShadow/LightSpacePerspectiveShadowMap
#include osgShadow/ParallelSplitShadowMap
#include osgShadow/ViewDependentShadowMap
#include osgGA/TrackballManipulator
#include osgViewer/ViewerEventHandlers
#include osgViewer/Viewer
int main( int argc, char** argv )
{
unsigned int rcvShadowMask = 0x1;
unsigned int castShadowMask = 0x2;
osg::ref_ptrosg::Program program = new osg::Program;
program-addShader( osgDB::readShaderFile(shadowRenderer.frag) );
osg::ref_ptrosg::MatrixTransform city = new osg::MatrixTransform;
city-addChild( osgDB::readNodeFile(city_root.osgb) );
city-setNodeMask( rcvShadowMask|castShadowMask );
city-getOrCreateStateSet()-setMode( GL_LIGHTING, osg::StateAttribute::OFF );
city-getOrCreateStateSet()-setAttribute( program.get() );
osg::ref_ptrosg::LightSource light = new osg::LightSource;
light-getLight()-setPosition( osg::Vec4(1.0, 1.0, 1.0, 0.0) );
osg::ref_ptrosgShadow::ViewDependentShadowMap sm = new osgShadow::ViewDependentShadowMap;
osg::ref_ptrosgShadow::ShadowSettings settings = new osgShadow::ShadowSettings;
settings-setShaderHint( osgShadow::ShadowSettings::NO_SHADERS );
settings-setTextureSize( osg::Vec2s(2048, 2048) );
settings-setMinimumShadowMapNearFarRatio( 0.05 );
osg::ref_ptrosgShadow::ShadowedScene shadowRoot = new osgShadow::ShadowedScene;
shadowRoot-setShadowTechnique( sm.get() );
shadowRoot-setShadowSettings( settings.get() );
shadowRoot-setReceivesShadowTraversalMask( rcvShadowMask );
shadowRoot-setCastsShadowTraversalMask( castShadowMask );
shadowRoot-addChild( city.get() );
shadowRoot-addChild( light.get() );
osg::ref_ptrosgDB::Options options = new osgDB::Options(dds_flip);
options-setObjectCacheHint( osgDB::Options::CACHE_IMAGES );
osgDB::Registry::instance()-setOptions( options.get() );
osgDB::Registry::instance()-getOrCreateSharedStateManager();
osgViewer::Viewer viewer;
viewer.setSceneData( shadowRoot.get() );
viewer.addEventHandler( new osgViewer::StatsHandler );
return viewer.run();
}
shadowRenderer.frag
Description: Binary data
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Re: [osg-users] Methods to improve large scene shadows with ViewDependentShadowMap
Hi Luc, I'm glad that someone is working on the same topic and we can share opinions and experience all the time. :-) 2012/3/12 Luc Frauciel luc.frauc...@star-apic.com At what angles did you encounter innacceptable alisasing issues ? A snapshot of the shadowed city I'm working with is attached in my last post, so does the download link of the model files. It shows some distinct jags and streaks on a few building surfaces. For views that are not near tangent to the ground plane, the results I got seems ok. Is your problem global or limited to certain points of view ? I think it may happen in any position. But a view from the high altitude is always better. Is your target resolution way beyond the resolution of the shadow map (1*1) per ex ? The target city's radius is about 2800 and it is formed up by about 1000 mansions. Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Rendering without calling osgViewer::frame
Hi Sean, In the coming OpenSceneGraph 3.0 Cookbook (will be published in March), I provide such an example that renders OSG scene graph using osgUtil::SceneView directly in GLUT. You may find the source code at: https://github.com/xarray/osgRecipes/tree/master/cookbook/chapter9/ch09_06 The source code are completely in public domain so you may choose to buy the book or not. :-) But as Jason suggested, this is not recommended in most cases as you can't make use of a lot of OSG features anymore. Cheers, Wang Rui 2012/2/29 Sean O'Connell soconn...@zebraimaging.com In my application I have a bunch of cameras that render to textures. Is there a way for me to trigger them to render without calling osgViewer::frame or going through the osgViewer class? Ideally I could simply call camera-renderView() or something similar. Is this possible? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=45868#45868 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [ANN] OpenSceneGraph 3.0 Cookbook: ready for pre-order and code tests
Hi Robert, I would like to notify you and the community when the book is formally published and please add the news on the website's front page then. :-) Thanks, Wang Rui 2012/2/26 Robert Osfield robert.osfi...@gmail.com Hi Rui, Congratulations to yourself and the rest of the team helping out with book ;-) Do you want me to post an notification about the book on the OSG front page right away or should I wait till it's formally published and available? Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [ANN] OpenSceneGraph 3.0 Cookbook: ready for pre-order and code tests
Hi all, I'm glad to tell you all that the code repository of the OpenSceneGraph 3.0 Cookbook is now open for tests and feedbacks. The link of the book is: http://www.packtpub.com/openscenegrap-3-for-advanced-3d-programming-using-api-cookbook/book And you may preorder it now or just wait for another month for its publication. Thanks to Robert Osfield and the whole OSG community, especially the technique reviewers: Torben Dannhauer, Vincent Bourdier, and Chris Hanson, for your continuous contributions and supports to this marvelous OpenSceneGraph project and related publications. The code repository is at: https://github.com/xarray/osgRecipes It includes all the source code and resource required for the book. Some recipes are not contained in the book itself because of the page count limitation, but now you may find them in the public domain. I hope that someone could help me test the recipes on different platforms and see if there are still compile problems and obvious bugs. Any more suggestions and contributions to osgRecipes itself are also welcomed, as I would like to make this project a collection and sharing place of OSG recipes for developers and beginners. Some dozens of examples from one cookbook are surely not enough currently. :-) It took me seven months to finish another OSG book with the Packt Publishing team. Now I'm going to have a rest with my family and will be back as a normal contributor soon with some new ideas and possible submissions (e.g. TUIO and Kinect supports :-) Cheers, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Rendering NURBS
Hi Anders, I have a NURBS example in my coming book: OpenSceneGraph 3.0 Cookbook. It uses the glu* functions within a derived Drawable class. Also a long time ago, I had have a project osgModeling (currently inactive) in which I implemented a class that simulates NURBS surfaces with polygons. But now I personally prefer the openNURBS library (www.*opennurbs*.org) with which you can either draw curves and surfaces with glu* functions or convert them to osg::Geometry objects. I have made a very initial and ugly encapsulation of it with OSG in the experimental project osgXI ( sourceforge.net/projects/*osgxi*). Cheers, Wang Rui 2012/2/21 Anders Backman ande...@cs.umu.se What do you guys out there use for rendering NURBS? glu? Third-party libraries? If so which ones can you recommend? Thanks, Anders. -- __ Anders Backman, HPC2N 90187 Umeå University, Sweden and...@cs.umu.se http://www.hpc2n.umu.se Cell: +46-70-392 64 67 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Git Clients
Hi Kim, TortoiseGit (http://code.google.com/p/tortoisegit/) is a good choice for windows users, and you have to install another Git console before installing it, such like msysgit. Regards, Wang Rui 2012/2/18 Kim Bale kcb...@googlemail.com Hi all, Slightly off-topic so I apologise, but with all this talk of moving OSG over to GIT I was thinking about having a go with it and see how it all works. So, can anybody recommend a good git client for windows? I've been using Tortoise for subversion for a long time and rather like it, so something similar would be good.. Cheers, Kim. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] multiple windows question
Hi Alex, The composite viewer can have multiple views of different scene graph on different windows. Setup the Traits of each separated window and set it to each view's camera, and setup your scenes with the View::setSceneData() method. Wang Rui 2012/2/17 Pecoraro, Alexander N alexander.n.pecor...@lmco.com What is the best way to have multiple windows with different views of the same scene graph? I took a look at the composite viewer example, but it has different views of the same scene graph with a single window. So not quite what I want. ** ** Thanks. ** ** Alex ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Drawing poly line, jitter/vibration issue when moving camera
Hi Preet, 2012/2/14 Preet prismatic.proj...@gmail.com I'm using large (values in the hundred-millions), high precision numbers (doubles) for the vertices of the line strip, and I think that's what's causing the problem (I couldn't recreate the issue using smaller, more sane numbers from 1-500 for example, even though the same double datatype is used to store both numbers). I believe this is the cause of your problem. Use a transform node as the parent of your geodes and use it to reduce the number of digits. Regards, Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Fwd: Ambient Occlusion Implementation 2 review
Hi Adrian, I'd like to help if you think it possible. I'm going to finish my second OSG book in a few days and then I'll have time to contribute to the community again. I myself implements a TUIO binding and consider to submit a new manipulator with it later, but I believe your work will really shock others a lot and will be the best Xmax gift for everyone. :-) Wang Rui 2011/12/20 Adrian Egli OpenSceneGraph (3D) 3dh...@gmail.com: Hello all, Chrismas and i present this code. Who can support me preparing this algorithm to integrate into the osg core lib. /adrian -- Forwarded message -- From: Adrian Egli OpenSceneGraph (3D) 3dh...@gmail.com Date: 2011/10/16 Subject: Ambient Occlusion Implementation 2 review To: rob...@openscenegraph.com, urs.kuenz...@bfh.ch Hi Robert, I am working hard on different projects as well as you do. A long time ago i wrote an ambient occlusion algorithm working with openscenegraph. May you can review it and may we can once this algorithm integrate into OSG core library. I though i could public the source and document in GPU PRO but they doesnt like this fast approach do of politics i guess, or may this stuff is really as slow as the told me. As i dont get the time to rewrite it for a 2nd conference, book, etc. may we could improve the idea and integrate it deeply into the core library of openscenegraph and we can but a reference on the osg webpage (open source publication) , what do you think? Please download an have a look into the windows bin32 files and exe. http://webaddon3d.assoftware.ch/AE/SSAO/GPUPro2_Proposal_Adrian_Egli_CUBIC_SPLINE_BASED_AMBIENT_OCCLUSION.rar regards adrian -- Adrian Egli -- Adrian Egli ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [ANN] New OSG book on the way, and new plan of OSG recipes
Hi all, During the last few months, I'm busy writing a new book for the Packt Publishing with Xuelei Qian. The book is named OpenSceneGraph 3.0 Cookbook, with exactly 100 recipes to try to show how OSG can be used in practical applications. This book is required to be written for users who are already familiar with the basic concepts of OSG and want to make use of this powerful 3D API toolkit in their own projects and studies. It will be finished at the end of this year and released before Match, 2012. The book is divided into 10 chapters, and includes some (maybe) practical and interesting examples, like the compass, skybox, cloud, night-vision, depth-of-field, character animation, four view mode, using VPB, quick integrations with NVCG, PhysX, DirectInput and NPAPI, and basic code of implementing post effects, G-buffer, deferred shading, custom camera manipulator, and even a light-weighted 2D 'Galaxian' game. The most valuable part of it should be the source code, and the book itself will mainly explain how these code work, as well as a lot of nonsense word :-P You can visit Packt's official website for this book at: http://www.packtpub.com/openscenegrap-3-for-advanced-3d-programming-using-api-cookbook/book It is my fault not to prompt the whole community to contribute to such a 'recipes' book. But as this is a commercial publication which requires contract with authors, and I must provide the example list as soon as possible and submit each chapter before the dead-line, it may not be comfortable for any public domain team to work on. But it raises my interest of starting (or joining, if there's already one) a new open source 'recipes' project after the book. The project will make and collect all kinds of small or medium OSG examples and plugins that can be executed independently and are *useful in practical*. It could even reconstruct and put some obsolete projects in, like osgCal2, osgNV, etc., under the LGPL/OSGPL license. This project had better be different from current examples in the OSG trunk. For example, it may have modules focusing on designing small components for a certain field of developments (e.g., GIS, or RTS Game), integrating OSG with various APIs, or providing easy code as teaching materials. I know there are some similar discussions here before, and I've also created a project named osgXI (X-interface) on sourceforge to test some initial ideas. Now I'd like to call for people interested in to give me advices, join me and contribute your small work in future. :-) As the current book still need time to be finished and my wedding in October, I might be free to start such a project after about a month, and I'll also continue my paused work of improvement of LinesegmentIntersector, Flash integration, and implementing osgPhysics. :-) Any ideas and suggestions are welcome. Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
