Re: [osg-users] Multithreadingcrash due toosgDb::Registry::instance()
Hi all,
for those interested in instruction order issues, these videos might be
interesting (search google video):
* Herb Sutter - Machine Architecture: Things Your Programming Language
Never Told You
* IA Memory Ordering
There is quite a bit of work going into the next C++ standard to address
some of these issues. Sutter others have written a lot about it in the
last few months, a search should send you down the rabbit hole.
cheers
jp
I-Nixon, Anthony D wrote:
Thanks for the pointer Paul. The points you raise do apply to C++ as
well, and it seems the consensus is that it is not possible to implement
the double-checked locking pattern in portable C++ safely.
See Scott Meyer's and Andrei Alexandrescu's paper here
http://www.aristeia.com/Papers/DDJ_Jul_Aug_2004_revised.pdf
If Scott Meyer's says it can't be done, I tend to believe him :-)
From Scott's paper:
In many cases, initializing a singleton resource during single-threaded
program startup
(e.g., prior to executing main) is the simplest way to offer fast,
thread-safe
singleton access.
So the best thing to do is to advertise in large bold letters somewhere
in the doco (and FAQ) that if you are going to use multithreading, all
instances need to be accessed before threading starts.
Anthony
-Original Message-
From: Paul Speed [mailto:psp...@progeeks.com]
Sent: Friday, 20 March 2009 2:21 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] Multithreadingcrash due
toosgDb::Registry::instance()
Just a note for those of us who have been bitten by double
check locking issues in Java, this technique is highly
dependent on the threading and data architecture in use.
There are subtle issues between when a thread commits its
local state and the possibility for the compiler to reorder
statements. This was less of an issue on single-core boxes
but comes up in multi-core where the local thread state may
not be committed. I can't be sure but there may have also
been some subtle statement reordering issues with respect to
the compiler not knowing that your guard release _must_ be
run after the instance_ = new Singleton has _fully_ executed.
I don't know if these problems crop up in C++ but it
certainly seems like they could depending on the threading
implementation and compiler optimization strategy.
Worst case for a singleton pattern is that you might get a
race condition where two instances are created. There are
other double-checked locking situations that are much more insidious.
-Paul
Paul Melis wrote:
Robert Osfield wrote:
2009/3/17 Schmidt, Richard richard.schm...@eads.com
mailto:richard.schm...@eads.com
http://www.cs.wustl.edu/~schmidt/PDF/DC-Locking.pdf
http://www.cs.wustl.edu/%7Eschmidt/PDF/DC-Locking.pdf
Could you explain what the above document is all about...
I just read it an it describes a pattern where you use a mutex to
guard access to the singleton's _instance value, but in such a way
that the mutex is only needed when _instance == NULL, i.e.
class Singleton
{
public:
static Singleton *instance (void)
{
// First check
if (instance_ == 0)
{
// Ensure serialization (guard constructor
acquires lock_).
GuardMutex guard (lock_);
// Double check.
if (instance_ == 0)
instance_ = new Singleton;
}
return instance_;
// guard destructor releases lock_.
}
private:
static Mutex lock_;
static Singleton *instance_;
};
This should give you thread-safe access to Singleton-instance() at
all times combined with correct initialization.
Quite neat actually,
Paul
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[osg-users] unsubscruibe
Hi Have been trying to ubsubscribe for a while, I have no idea what any of you are talking about and the inbox is always full! please help! Andree Stay connected to the people that matter most with a smarter inbox. Take a look http://au.docs.yahoo.com/mail/smarterinbox___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] unsubscruibe
Andree, Go to the bottom of the following page to unsubscribe from the mailing list: http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org As an alternative you may register at the forums: http://forum.openscenegraph.org/ -- Roland -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8823#8823 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FFmpeg plugin
HI Carlos, Our plugin doesn't contain any inflateInit_ or inflate method of any kind, so the missing sybmol must be coming from ffmpeg itself. I haven't see this error myself when building from various versions of ffmpeg so perhaps it's version 0.5 that has gone astray. Have a look in ffmpeg itself for the inflateInit_ method. Another thing you could try is using the svn version of ffmpeg, or the ffmpeg libs pulled down from the Ubuntu repositories. Robert. 2009/3/19 Carlos Sanches ces...@gmail.com Ok , I did it . now I m trying to run de example: osgmovie -e ffmpeg this error occours Warning: dynamic library '/usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so' exists, but an error occurred while trying to open it: /usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so: undefined symbol: inflateInit_ Usage: ./osgmovie [options] filename ... Options: ... 2009/3/19 Adrian Egli OpenSceneGraph (3D) 3dh...@gmail.com I am working with windows, no problem there, but here my settings. Variable Name: FFMPEG_LIBAVCODEC_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVCODEC New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVCODEC_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avcodec-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVDEVICE New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avdevice-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVFORMAT New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avformat-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVUTIL New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avutil-49.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBSWSCALE_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/libswscale New Value (Enter to keep current value): Variable Name: FFMPEG_LIBSWSCALE_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/swscale-0.lib New Value (Enter to keep current value): Variable Name: FFMPEG_ROOT Description: Location of FFMPEG Current Value: F:/dev/ffmpeg/SDK/include New Value (Enter to keep current value): 2009/3/19 Carlos Sanches ces...@gmail.com Hi Adrian ! ok, I have the ffmpeg installed . I use it to convert my movies. Now I m seeing in ccmake configure list . but have some options that I dont know what I have to put there. the options are : FFMPEG_LIBAVCODEC_INCLUDE_DIRS /usr/include FFMPEG_LIBAVCODEC_LIBRARIES /usr/lib/libavcodec.so FFMPEG_LIBAVDEVICE_INCLUDE_DIR FFMPEG_LIBAVDEVICE_INCLUDE_DIRS-NOTFOUND FFMPEG_LIBAVDEVICE_LIBRARIES FFMPEG_LIBAVDEVICE_LIBRARIES-NOTFOUND FFMPEG_LIBAVFORMAT_INCLUDE_DIR /usr/include FFMPEG_LIBAVFORMAT_LIBRARIES /usr/lib/libavformat.so FFMPEG_LIBAVUTIL_INCLUDE_DIRS /usr/include FFMPEG_LIBAVUTIL_LIBRARIES /usr/lib/libavutil.so FFMPEG_LIBSWSCALE_INCLUDE_DIRS /usr/include FFMPEG_LIBSWSCALE_LIBRARIES /usr/lib/libswscale.so FFMPEG_ROOT The options that I believe that must be wrong are: FFMPEG_LIBAVDEVICE_INCLUDE_DIR FFMPEG_LIBAVDEVICE_LIBRARIES FFMPEG_ROOT What I have to do in these options ? tks 2009/3/19 Adrian Egli OpenSceneGraph (3D) 3dh...@gmail.com Hi Carlos You have to donwload ffmpeg and build the plugin by setting up the right parameters in cmake. then osg will build the ffmpeg plugin as well as the other 3rd party plugins will be build. adrian 2009/3/18 Carlos Sanches ces...@gmail.com Hi Robert. I m seeing that my /usr/local/lib/osgPlugins-2.9.1 directory dont have the plugin for ffmpeg . this is correct ? I put this in my code ... std::string libName = osgDB::Registry::instance()-createLibraryNameForExtension(ffmpeg); osgDB::Registry::instance()-loadLibrary(libName); but how I know if it is using ffmpeg ? tks 2009/3/16 Robert Osfield robert.osfi...@gmail.com Hi Carlos, Have a look at the osgmovie example for guidance, it'll boil down to reading a image, and assing to the a textured quad. Right now you'll need to preload the ffmpeg plugin as osgDB won't yet automatically alias the movie extensions to ffmpeg. On the movie command line you use the option -e ffmpeg to pre load the plugin. Programatically you'd use:
Re: [osg-users] Blueberry3D high detail terrain solution for OpenSceneGraph
Hi, First I would like to correct previous post, claiming Blueberry3D is a core library and cant be used as it is. Blueberry3D is a commercial off the shelf product with 3 main modules for REAL-TIME simulation. The Blueberry3D Editor, the Blueberry3D Real-Time Environment with SDK and the Blueberry3D Run-time. It is possible to get a free evaluation copy of Blueberry3D. The software you will get for the evaluation is the full version of Blueberry3D. There is no limitation of the functionally. You are also provided with a DEMO database 50km X 30km. The evaluation period is normally for 30days. Contact me if you are interested in an evaluation copy: Enrico PS: Frederic, thank you for nice comments about our LandSIM3D product. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8824#8824 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Image Resolution in VPB
Hi Matins, Slight variations of the pixel colour may come about due to GDAL interpolating data, interpolation done with VPB, or the edge boundary equalization. The small variation you are seeing might simply be down to this, it's not something at this stage I'd even flag up as a problem. It certainly doesn't looked to be the corner equalization bug, as this just effects the corners. BTW, the way is there a reason for the image being pixelated? VPB typically generates databases that use linear texture filtering. Robert. 2009/3/19 Martins Innus min...@ccr.buffalo.edu Robert, Thanks. Using -e with appropriate options did exactly what I wanted, except for a slight error on the edges of the created images. If i overlay the created image tiles from the highest resolution level on top of the original source imagery, they are pixel to pixel exact except for a 1 pixel strip all the way around the image. It appears that the edge values are an average of what the pixel value actually should be and the pixel directly adjacent to it but what should be the next tile. If you layer the attached good and bad images on top of each other in an image viewer and toggle back and forth you can see the pixels changing. The good image is just the original source imagery zoomed in. The bad image shows the vpb generated tile overlayed on the left side. I saw the corner equalization bug posts, but this seems like a different issue. This is under Redhat Enterpise Linux, x86_64, with OSG 2.8 and VPB svn of a couple days ago. Martins Robert Osfield wrote: Hi Martins, You could try to use the -e option. It takes lat/longs as input. I don't know if it'll pad though, as I suspect it won't unless the at least some of the input data covers the region. If you want to force the resolution to be the same then just use the image and height res option. I can't recall what they off the top of my head, run osgdem --help to list them all. Robert. On Mon, Mar 16, 2009 at 6:12 PM, Martins Innus min...@ccr.buffalo.edumailto: min...@ccr.buffalo.edu wrote: Hello, I'm using VPB to generate a terrain database with 2ft resolution elevation data and 1 ft resolution imagery. What I'm trying to do is make the imagery in the highest resolution tiles have the exact same resolution as the source imagery and also still be a power of 2 for the image tiles. I've verified that if I take a small input area where the source imagery dimensions are a power of 2, I get what i want for the final model. It seems that if I could tell VPB to pad out the extents of my input data to a power of 2 that should work as well. I don't care if its black or garbage or whatever. Would the -e option do what I want if I specify extents larger than the input data? I'm about to give that a try but it takes about three days for this job to run to completion, so I figured I would ask if anyone has tried to do the same thing. Thanks for any insight. Martins ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto: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
Re: [osg-users] OSG 2.8.1
2009/3/19 Andy Skinner andy.skin...@mathworks.com This seems to work, too. I haven’t done what I’d call a thorough qualification, but I’m happy. Thanks for the testing. Next Monday I'll tag the 2.8.1-rc1 and do another call for testing. Hopefully be the end of next week we can roll 2.8.1 out the door ;-) Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] DoomLike manipulator
Hi Loic, Great little discussion :-) 2009/3/19 Simon Loic simon1l...@gmail.com Maybe when I will have finished to implement the GROUNDED/HORIZONTAL mode you can give it a try and decide which name best fits. In my concern I clearly incline towars grounded as the implementation I was about to propose allows step over small obstacles like stairs. If you have remarks on the implementation so far, go ahead... to sukender : I didn't exacly get your remarks while I'm sure they are founded. Anyway I think that when I wil have finished to code both mode, things will become clearer for me and for you. Get you informed as soon as the manipulator is ready. When you ready just post the changes to either osg-submissions if it's ready to merge, or to osg-users if you feel it still needs more discussion. Cheers, Robert, ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::Operation lags
HI Roman,
Is i the UpdateSensoeHMDOperation that is at fault? Put your own timing
stats into your code and see how long this is tacking to run, my guess is
that it's cost will be rather sporadic - if this is the case then you need
to change the way you manage this code, such as by creating an
OperationThread that sits in the background and polls the device(s), and the
during the update thread it merges changes required.
Robert.
2009/3/20 Roman Grigoriev grigor...@gosniias.ru
Hi Guys!
I’d like to use osg::Operation to read sensor data to viewer orientation
So I test simple operation but have strange results – lags in frame rate.
I attach picture to demonstrate it
My config osg 2.7.2 vista nvidia 8600m gt
operationThread = new osg::OperationThread;
osg::ref_ptrUpdateSensorHMDOperation updateOperation;
updateOperation = new UpdateSensorHMDOperation();
operationThread-add(updateOperation.get());
operationThread-startThread();
viewer-addUpdateOperation(updateOperation.get());
class UpdateSensorHMDOperation : public osg::Operation
{
public:
UpdateSensorHMDOperation():
Operation(UpdateTextOperation, true),
_load(false),_valid1(false)
{
osg::notify(osg::NOTICE)load update operationstd::endl;
}
virtual void operator () (osg::Object* callingObject)
{
osg::notify(osg::NOTICE)updatestd::endl;
}
virtual void release()
{
}
bool _load;
bool _valid1;
};
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Re: [osg-users] OpenCL: democracy for GPU computing?
Martin Beckett wrote: Following OpenGL3 I'm not holding my breath for a standard developed by Khronos. It was actually developed by Apple, who submitted it to the Khronos Group (although they probably fiddled with the original spec, of course). The bit about OpenCL not just being for GPUs but also for CPUs and Cell worries me - it sounds like a 'grand plan' - it supports manufacturers extentions so if you have an OpenCL app that needs Nvidia extentions why not just use Cuda? Finally are there any real competitors to Nvidia in this space? Are you about to run heavy weight physics simualtions on an embedded Intel chipset? Would you rather be forced to always use NVidia's stuff through Cuda than possibly have the option of using a different backend through OpenCL? Only time will tell if there are going to be serious competitors, of course... Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OpenCL: democracy for GPU computing?
On Fri, Mar 20, 2009 at 4:57 AM, Martin Beckett m...@mgbeckett.com wrote: Following OpenGL3 I'm not holding my breath for a standard developed by Khronos. The bit about OpenCL not just being for GPUs but also for CPUs and Cell worries me - it sounds like a 'grand plan' - it supports manufacturers extentions so if you have an OpenCL app that needs Nvidia extentions why not just use Cuda? Finally are there any real competitors to Nvidia in this space? Are you about to run heavy weight physics simualtions on an embedded Intel chipset? We'll have to see what happens with ATI's and Intel's OpenCL implementation. Supporting extensions/some code specifics is far better than doing work having to do everything in completely proprietary API's as more of your work will be reusable. The OSG itself uses lots of OpenGL extensions but it hasn't become a great problem for maintenance or development - the OSG still supports OpenGL 1.1 hardware as it does OpenGL 2.1 + extensions hardware. This does suggest that it won't be a show stopper that OpenCL has extensions and that we might need to use them occassionally to get best out of particular hardware platform. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] switch between two camera
HI Ben, On Fri, Mar 20, 2009 at 9:48 AM, Ben ben.poul...@gmail.com wrote: Hi, if I have understood , I must design my application with a CompositeViewer in order to use two scene, each in it's own view. I have a 3D classic view and a map vue. How can I display only one at once using compositeviewer? (I don't see how to use nodemask) The natural way to manage a application that was two views on to two different scenes is to use a osgViewer::View for each separate scene, and then a osgViewer::CompositeViewer to manage these two scenes. These two views can share the same GraphicsWindow, or have their own. They may even be added/removed from the CompositeViewer, or have their rendering toggled on/off via NodeMask's on the master Camera for each View. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] switch between two camera
Hi, Ben, I use something like camera0-setNodeMask(0X); camera1-setNodeMask(0); to enable camera0 but disable camera1. I hope it helps. Yun On Fri, Mar 20, 2009 at 10:48 AM, Ben ben.poul...@gmail.com wrote: Hi, if I have understood , I must design my application with a CompositeViewer in order to use two scene, each in it's own view. I have a 3D classic view and a map vue. How can I display only one at once using compositeviewer? (I don't see how to use nodemask) thank's ps: sorry to post beginners questions . [Rolling Eyes] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8833#8833 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Cheers, Yun ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::Operation lags
HI Roman, 2009/3/20 Roman Grigoriev grigor...@gosniias.ru Hi Robert! As you’ve seen in my operation thread I simply write to stdout simple message: update and nothing more. But framerate lags unpredictable. Maybe there is good example or readme how to use operationthread Thanx in advance I have never seen problems like yours when using OperationThread/Operatons, but on a second review I see that your OpenThread never sleeps, it just churns away as effectively a spin lock on the CPU. If your machine doesn't have sufficient cores to handle a thead using 100% of the CPU core then you'll get frame stalls like you have. Try sticking a OpenThreads::Thread::YieldCurrentThread() into your operation. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] iterate node primitive set elements howto
Hi, is there an obvious way to know which element a node is composed of (dots, lines, triangles, quads, polygons,) and iterate over them in a loop? In an attempt to answer my question, I would say no. Since a node can be 1 or more models of possibly different characteristics, I would probably need to pass a visitor, and search for all the geometry nodes. Then for every one of those geometry nodes I can check the primitive set and iterate over its elements. Can anyone shed some light over my clouded mind and free me of my doubts? thanks paulo ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] GraphicsContext problem
Hi guys, I want to use OpenGL to render the interface, but use OSG to render in a region. And in this region I use OSG manipulator, but in the rest of the interface I use others. I don't know if it is possible, if it is, how to do? Thanks in advance. -- Cheers, Yun ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FFmpeg plugin
ok , now i m using svn version of ffmpeg. bow the example runs but the message still apear I put the the lines in main function of my program:: std::string libName = osgDB::Registry::instance()- createLibraryNameForExtension(ffmpeg); osgDB::Registry::instance()-loadLibrary(libName); but looks like that its using xine yet . and the old error continues. *** glibc detected *** ./OSG: free(): invalid pointer: 0x0b1f8fc7 *** === Backtrace: = /lib/tls/i686/cmov/libc.so.6[0xb73e9a85] /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb73ed4f0] /usr/local/lib/osgPlugins-2.9.1/osgdb_xine.so[0xb7f7c823] /usr/lib/libxine.so.1[0xb58484d8] === Memory map: Why my ffmpeg is not in use ? I have to modify something in osgDB ? 2009/3/20 Robert Osfield robert.osfi...@gmail.com HI Carlos, Our plugin doesn't contain any inflateInit_ or inflate method of any kind, so the missing sybmol must be coming from ffmpeg itself. I haven't see this error myself when building from various versions of ffmpeg so perhaps it's version 0.5 that has gone astray. Have a look in ffmpeg itself for the inflateInit_ method. Another thing you could try is using the svn version of ffmpeg, or the ffmpeg libs pulled down from the Ubuntu repositories. Robert. 2009/3/19 Carlos Sanches ces...@gmail.com Ok , I did it . now I m trying to run de example: osgmovie -e ffmpeg this error occours Warning: dynamic library '/usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so' exists, but an error occurred while trying to open it: /usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so: undefined symbol: inflateInit_ Usage: ./osgmovie [options] filename ... Options: ... 2009/3/19 Adrian Egli OpenSceneGraph (3D) 3dh...@gmail.com I am working with windows, no problem there, but here my settings. Variable Name: FFMPEG_LIBAVCODEC_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVCODEC New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVCODEC_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avcodec-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVDEVICE New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avdevice-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVFORMAT New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avformat-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVUTIL New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avutil-49.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBSWSCALE_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/libswscale New Value (Enter to keep current value): Variable Name: FFMPEG_LIBSWSCALE_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/swscale-0.lib New Value (Enter to keep current value): Variable Name: FFMPEG_ROOT Description: Location of FFMPEG Current Value: F:/dev/ffmpeg/SDK/include New Value (Enter to keep current value): 2009/3/19 Carlos Sanches ces...@gmail.com Hi Adrian ! ok, I have the ffmpeg installed . I use it to convert my movies. Now I m seeing in ccmake configure list . but have some options that I dont know what I have to put there. the options are : FFMPEG_LIBAVCODEC_INCLUDE_DIRS /usr/include FFMPEG_LIBAVCODEC_LIBRARIES /usr/lib/libavcodec.so FFMPEG_LIBAVDEVICE_INCLUDE_DIR FFMPEG_LIBAVDEVICE_INCLUDE_DIRS-NOTFOUND FFMPEG_LIBAVDEVICE_LIBRARIES FFMPEG_LIBAVDEVICE_LIBRARIES-NOTFOUND FFMPEG_LIBAVFORMAT_INCLUDE_DIR /usr/include FFMPEG_LIBAVFORMAT_LIBRARIES /usr/lib/libavformat.so FFMPEG_LIBAVUTIL_INCLUDE_DIRS /usr/include FFMPEG_LIBAVUTIL_LIBRARIES /usr/lib/libavutil.so FFMPEG_LIBSWSCALE_INCLUDE_DIRS /usr/include FFMPEG_LIBSWSCALE_LIBRARIES /usr/lib/libswscale.so FFMPEG_ROOT The options that I believe that must be wrong are: FFMPEG_LIBAVDEVICE_INCLUDE_DIR FFMPEG_LIBAVDEVICE_LIBRARIES FFMPEG_ROOT What I have to do in these options ? tks 2009/3/19 Adrian Egli OpenSceneGraph (3D) 3dh...@gmail.com Hi Carlos You have to donwload ffmpeg and build the plugin by setting up the right parameters in cmake. then osg will build the ffmpeg plugin as well as the other 3rd party plugins will be build. adrian 2009/3/18
Re: [osg-users] osg::Operation lags
Thanx Robert! Working with threads a little bit unfamiliar to me. Could you please point me to some examples how to use YieldCurrentThread() Thanx in advance Bye From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Robert Osfield Sent: Friday, March 20, 2009 1:44 PM To: OpenSceneGraph Users Subject: Re: [osg-users] osg::Operation lags HI Roman, 2009/3/20 Roman Grigoriev grigor...@gosniias.ru Hi Robert! As you've seen in my operation thread I simply write to stdout simple message: update and nothing more. But framerate lags unpredictable. Maybe there is good example or readme how to use operationthread Thanx in advance I have never seen problems like yours when using OperationThread/Operatons, but on a second review I see that your OpenThread never sleeps, it just churns away as effectively a spin lock on the CPU. If your machine doesn't have sufficient cores to handle a thead using 100% of the CPU core then you'll get frame stalls like you have. Try sticking a OpenThreads::Thread::YieldCurrentThread() into your operation. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgFX nodes with shaders with variables
Hi, I have a osgFX that needs to apply two pass technique. On the second pass I need to apply one or more shaders one or more times. (controlled by the user parameters) I looked at the osgFX::Scribe which covers the osgFX creation. For the shaders I looked at the code from osgshaders. Now my problem is that a simple callback to set the Uniform will not be enough for what I need. I need to control what shaders are enabling/disable, how many times each is applied for a pass and I need to be able to change the Uniforms for each of those applications. Any ideas how to do this with osg? I'm sure it's not complicated, but I'm kind of new to this. Thank you paulo ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FFmpeg plugin
Hi guys, inflateInit_ sounds very much like an API entry point in zlib. Tanguy From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Robert Osfield Sent: Friday 20 March 2009 08:55 To: OpenSceneGraph Users Subject: Re: [osg-users] FFmpeg plugin HI Carlos, Our plugin doesn't contain any inflateInit_ or inflate method of any kind, so the missing sybmol must be coming from ffmpeg itself. I haven't see this error myself when building from various versions of ffmpeg so perhaps it's version 0.5 that has gone astray. Have a look in ffmpeg itself for the inflateInit_ method. Another thing you could try is using the svn version of ffmpeg, or the ffmpeg libs pulled down from the Ubuntu repositories. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FFmpeg plugin
yeah here * http://refspecs.freestandards.org/LSB_3.0.0/LSB-Core-generic/LSB-Core-generic/zlib-inflateinit.html * On Fri, Mar 20, 2009 at 9:47 AM, Tanguy Fautre tang...@aristechnologies.com wrote: Hi guys, inflateInit_ sounds very much like an API entry point in zlib. Tanguy From: osg-users-boun...@lists.openscenegraph.org [mailto: osg-users-boun...@lists.openscenegraph.org] On Behalf Of Robert Osfield Sent: Friday 20 March 2009 08:55 To: OpenSceneGraph Users Subject: Re: [osg-users] FFmpeg plugin HI Carlos, Our plugin doesn't contain any inflateInit_ or inflate method of any kind, so the missing sybmol must be coming from ffmpeg itself. I haven't see this error myself when building from various versions of ffmpeg so perhaps it's version 0.5 that has gone astray. Have a look in ffmpeg itself for the inflateInit_ method. Another thing you could try is using the svn version of ffmpeg, or the ffmpeg libs pulled down from the Ubuntu repositories. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Carlos Sanches Programação Gráfica; Tel: 55 11 3816 2888 Cel: 55 11 9650 7137 Somar Meteorologia www.somarmeteorologia.com.br ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::Operation lags
Thanx Robert!
I works fine
Here is my class if it will be useful for someone.
lass UpdateMissileOperation : public osg::Operation
{
public:
UpdateMissileOperation():
Operation(UpdateMissileOperation, true)
{
}
virtual void operator () (osg::Object* callingObject)
{
osgViewer::Viewer* viewer =
dynamic_castosgViewer::Viewer*(callingObject);
double t;
if (viewer)
t = viewer-getFrameStamp()-getSimulationTime();
_dt=t-_time;
if ((_dt=0.02))
{
//printf(%f\n,_dt);
update();
_time=t;
}
else
{
OpenThreads::Thread::YieldCurrentThread();
}
}
void update()
{
//printf(%f\n,_time);
}
virtual void release()
{
}
bool _load;
bool _valid1;
float _time;
float _dt;
};
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Roman
Grigoriev
Sent: Friday, March 20, 2009 3:42 PM
To: 'OpenSceneGraph Users'
Subject: Re: [osg-users] osg::Operation lags
Thanx Robert!
Working with threads a little bit unfamiliar to me.
Could you please point me to some examples how to use YieldCurrentThread()
Thanx in advance
Bye
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Robert
Osfield
Sent: Friday, March 20, 2009 1:44 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] osg::Operation lags
HI Roman,
2009/3/20 Roman Grigoriev grigor...@gosniias.ru
Hi Robert!
As you've seen in my operation thread I simply write to stdout simple
message: update and nothing more.
But framerate lags unpredictable.
Maybe there is good example or readme how to use operationthread
Thanx in advance
I have never seen problems like yours when using OperationThread/Operatons,
but on a second review I see that your OpenThread never sleeps, it just
churns away as effectively a spin lock on the CPU. If your machine doesn't
have sufficient cores to handle a thead using 100% of the CPU core then
you'll get frame stalls like you have.
Try sticking a OpenThreads::Thread::YieldCurrentThread() into your
operation.
Robert.
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Re: [osg-users] osg::Operation lags
Hi Robert,
Robert Osfield wrote:
I have never seen problems like yours when using
OperationThread/Operatons, but on a second review I see that your
OpenThread never sleeps, it just churns away as effectively a spin
lock on the CPU. If your machine doesn't have sufficient cores to
handle a thead using 100% of the CPU core then you'll get frame stalls
like you have.
More general, is what follows a good summary of how to use an
osg::Operation (looking at the osgtext example for reference)? You
subclass it and implement your action in the call operator. Then you add
an instance of the operation class to a separate thread (starting it so
it calls the operation in the background), plus you add the same
instance to a osgViewer::Viewer instance. The only argument to the call
operator is used to distinguish who makes a call on the operation and
therefore what action you need to take. Is that a good summary?
Ignoring having to call yield once in a while, is the below test roughly
the way to do it (I used the osgtext example as a second source)? Is the
mutex in the call operator necessary?
Doh, lots of question marks above :)
Paul
// g++ -g -o op operation.cpp -I ~/osg2.8/include/ -L ~/osg2.8/lib/
-losg -losgDB -losgViewer
#include cstdio
#include osg/OperationThread
#include osgViewer/Viewer
#include osgDB/ReadFile
class UpdateOperation : public osg::Operation
{
public:
UpdateOperation():
Operation(UpdateOperation, true)
{
}
virtual void operator() (osg::Object* callingObject)
{
OpenThreads::ScopedLockOpenThreads::Mutex lock(_mutex);
printf(operator(): obj = 0x%08x\n, callingObject);
}
virtual void release()
{
printf(release()\n);
}
protected:
OpenThreads::Mutex _mutex;
};
int
main()
{
osg::ref_ptrUpdateOperation updateOperation = new UpdateOperation();
osgViewer::Viewer viewer;
osg::ref_ptrosg::OperationThread operationThread = new
osg::OperationThread;
operationThread-add(updateOperation.get());
operationThread-startThread();
viewer.addUpdateOperation(updateOperation.get());
viewer.setSceneData(osgDB::readNodeFile(cow.osg));
viewer.run();
}
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Re: [osg-users] osgFX nodes with shaders with variables
Well, from reading Technique.cpp I'm able to guess that I have to re-implement the traverse traverse method. The best idea seems to be just copy paste the Technique::traverse_implementation and for each pass implement a specific behavior. For what I want, apply the same shader(s) several times, first each shader should be associated with a specific pass/state set. Then loop around the traverse of the Technique's children. I think that here I can freely modify the shaders parameters, but I'm not sure. Another problem is that I don't know for which kind of visitor I should do this. (Or even if this is the right way to do it - as there's no doc) Someone? [Question] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8847#8847 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FFmpeg plugin
Hi Carlos, What happens when you run: osgmovie -e ffmpeg a_video.mpg Is it still reporting that it can't load the plugin? I suspect that you are still hitting against the plugin not loading correctly. The inflatInit method is still being reported as not found and this function is from zlib then ffmpeg is built without linking against zlib which is needs. Linking against zlib ourselves in our ffmpeg could a solution. It's odd that you're having problems wheras others aren't. What is the exact spec of your system? Robert. 2009/3/20 Carlos Sanches ces...@gmail.com ok , now i m using svn version of ffmpeg. bow the example runs but the message still apear I put the the lines in main function of my program:: std::string libName = osgDB::Registry::instance()-createLibraryNameForExtension(ffmpeg); osgDB::Registry::instance()-loadLibrary(libName); but looks like that its using xine yet . and the old error continues. *** glibc detected *** ./OSG: free(): invalid pointer: 0x0b1f8fc7 *** === Backtrace: = /lib/tls/i686/cmov/libc.so.6[0xb73e9a85] /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb73ed4f0] /usr/local/lib/osgPlugins-2.9.1/osgdb_xine.so[0xb7f7c823] /usr/lib/libxine.so.1[0xb58484d8] === Memory map: Why my ffmpeg is not in use ? I have to modify something in osgDB ? 2009/3/20 Robert Osfield robert.osfi...@gmail.com HI Carlos, Our plugin doesn't contain any inflateInit_ or inflate method of any kind, so the missing sybmol must be coming from ffmpeg itself. I haven't see this error myself when building from various versions of ffmpeg so perhaps it's version 0.5 that has gone astray. Have a look in ffmpeg itself for the inflateInit_ method. Another thing you could try is using the svn version of ffmpeg, or the ffmpeg libs pulled down from the Ubuntu repositories. Robert. 2009/3/19 Carlos Sanches ces...@gmail.com Ok , I did it . now I m trying to run de example: osgmovie -e ffmpeg this error occours Warning: dynamic library '/usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so' exists, but an error occurred while trying to open it: /usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so: undefined symbol: inflateInit_ Usage: ./osgmovie [options] filename ... Options: ... 2009/3/19 Adrian Egli OpenSceneGraph (3D) 3dh...@gmail.com I am working with windows, no problem there, but here my settings. Variable Name: FFMPEG_LIBAVCODEC_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVCODEC New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVCODEC_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avcodec-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVDEVICE New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avdevice-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVFORMAT New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avformat-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVUTIL New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avutil-49.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBSWSCALE_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/libswscale New Value (Enter to keep current value): Variable Name: FFMPEG_LIBSWSCALE_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/swscale-0.lib New Value (Enter to keep current value): Variable Name: FFMPEG_ROOT Description: Location of FFMPEG Current Value: F:/dev/ffmpeg/SDK/include New Value (Enter to keep current value): 2009/3/19 Carlos Sanches ces...@gmail.com Hi Adrian ! ok, I have the ffmpeg installed . I use it to convert my movies. Now I m seeing in ccmake configure list . but have some options that I dont know what I have to put there. the options are : FFMPEG_LIBAVCODEC_INCLUDE_DIRS /usr/include FFMPEG_LIBAVCODEC_LIBRARIES /usr/lib/libavcodec.so FFMPEG_LIBAVDEVICE_INCLUDE_DIR FFMPEG_LIBAVDEVICE_INCLUDE_DIRS-NOTFOUND FFMPEG_LIBAVDEVICE_LIBRARIES FFMPEG_LIBAVDEVICE_LIBRARIES-NOTFOUND FFMPEG_LIBAVFORMAT_INCLUDE_DIR /usr/include FFMPEG_LIBAVFORMAT_LIBRARIES /usr/lib/libavformat.so FFMPEG_LIBAVUTIL_INCLUDE_DIRS /usr/include FFMPEG_LIBAVUTIL_LIBRARIES
Re: [osg-users] osg::Operation lags
Hi Roman, You really need to learn how to investigate stuff on your own, I can provide pointers of but it's down to you do learn stuff and to code stuff, you can't expect others to walk you through it. In the case of YieldCurrentThead it's a single line of code that Yields the Current Thread, so I can't see what more needs explaining, there are plenty of examples of it in the core OSG - just do a grep through the sources. Robert. 2009/3/20 Roman Grigoriev grigor...@gosniias.ru Thanx Robert! Working with threads a little bit unfamiliar to me. Could you please point me to some examples how to use YieldCurrentThread() Thanx in advance Bye *From:* osg-users-boun...@lists.openscenegraph.org [mailto: osg-users-boun...@lists.openscenegraph.org] *On Behalf Of *Robert Osfield *Sent:* Friday, March 20, 2009 1:44 PM *To:* OpenSceneGraph Users *Subject:* Re: [osg-users] osg::Operation lags HI Roman, 2009/3/20 Roman Grigoriev grigor...@gosniias.ru Hi Robert! As you’ve seen in my operation thread I simply write to stdout simple message: update and nothing more. But framerate lags unpredictable. Maybe there is good example or readme how to use operationthread Thanx in advance I have never seen problems like yours when using OperationThread/Operatons, but on a second review I see that your OpenThread never sleeps, it just churns away as effectively a spin lock on the CPU. If your machine doesn't have sufficient cores to handle a thead using 100% of the CPU core then you'll get frame stalls like you have. Try sticking a OpenThreads::Thread::YieldCurrentThread() into your operation. 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] Animating vertices in a Geode
Hi, In the application I am working on, I am trying to create a smooth (transition) animation on the vertices inside an object. Example: I have included an illustration to make my problem a bit more clear. The current scene contains one geode with a geometry attached. The geometry is filled with 7 quads (4 vertices per quad) and is illustrated as red dots in the picture. (The 'edges' are stored in a separate geode) The application allows users to select a specific layout (radial, force based, etc) for the quads. In the current implementation this change happens immediately. (It updates the vertex array with new values and uses the dirty() call on the vertex array). On the OSG wiki page I found some information about animating objects in the scene graph. http://www.openscenegraph.org/projects/osg/wiki/Community/NodeKits/osgAnimation http://www.robertpenner.com/easing/easing_demo.html However, it seems like this will only work on geode level (by modifying the Matrix or PositionAttitudeTransformation). Another problem with this method is that it seems that you need to create a predefined animation. In my case the new position of a vertex will depend on the current position (and the animation only needs to be used once). Question: - Is there a way to use the osgAnimation functions on the vertex array and is it possible to use it with the transition methods from the EaseMotion demo? Kind regards, - Laurence -- Laurence Muller Website/Blog/Portfolio: http://www.multigesture.net/ inline: vertex_animation.png___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::Operation lags
Hi Robert! Sorry to disturb you with my simple question A lot of things to do in a short period time. Thanx again Bye From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Robert Osfield Sent: Friday, March 20, 2009 4:34 PM To: OpenSceneGraph Users Subject: Re: [osg-users] osg::Operation lags Hi Roman, You really need to learn how to investigate stuff on your own, I can provide pointers of but it's down to you do learn stuff and to code stuff, you can't expect others to walk you through it. In the case of YieldCurrentThead it's a single line of code that Yields the Current Thread, so I can't see what more needs explaining, there are plenty of examples of it in the core OSG - just do a grep through the sources. Robert. 2009/3/20 Roman Grigoriev grigor...@gosniias.ru Thanx Robert! Working with threads a little bit unfamiliar to me. Could you please point me to some examples how to use YieldCurrentThread() Thanx in advance Bye From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Robert Osfield Sent: Friday, March 20, 2009 1:44 PM To: OpenSceneGraph Users Subject: Re: [osg-users] osg::Operation lags HI Roman, 2009/3/20 Roman Grigoriev grigor...@gosniias.ru Hi Robert! As you've seen in my operation thread I simply write to stdout simple message: update and nothing more. But framerate lags unpredictable. Maybe there is good example or readme how to use operationthread Thanx in advance I have never seen problems like yours when using OperationThread/Operatons, but on a second review I see that your OpenThread never sleeps, it just churns away as effectively a spin lock on the CPU. If your machine doesn't have sufficient cores to handle a thead using 100% of the CPU core then you'll get frame stalls like you have. Try sticking a OpenThreads::Thread::YieldCurrentThread() into your operation. 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] compile error in osgwrapper_osgUtil PrintVisitor
Hi Robert! Another user reported this, but my nightly build also exhibits the same problem. Details here: http://www.cdash.org/CDashPublic/viewBuildError.php?buildid=14829 As we don't really need wrappers, this is just for your information in case you missed it. -- Csaba ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] switch between two camera
I try to use nodemask but doesn't work. Id do this : Code: osgViewer::CompositeViewer viewer; osgViewer::GraphicsWindowEmbedded* gw = new osgViewer::GraphicsWindowEmbedded; osgViewer::View* vue2D = new osgViewer::View; osgViewer::View* vue3D = new osgViewer::View; viewer.addView(vue2D); viewer.addView(vue3D); vue2D-getCamera()-setGraphicsContext(gw ); vue2D-getCamera()-setProjectionMatrixAsPerspective(30.0f, width()/(double) height(), 1.0, 1000.0); vue2D-getCamera()-setViewport(new osg::Viewport(0,0,width(),height() )); vue2D-setCameraManipulator(new osgGA::TrackballManipulator); vue3D-getCamera()-setGraphicsContext(gw ); vue3D-getCamera()-setProjectionMatrixAsPerspective(30.0f, width()/(double) height(), 1.0, 1000.0); vue3D-getCamera()-setViewport(new osg::Viewport(0,0,width(),height() )); vue3D-setCameraManipulator(new osgGA::TrackballManipulator); Code: // to switch vue3D OFF and vue2D on vue2D-getCamera()-setNodeMask(0X); vue3D-getCamera()-setNodeMask(0); -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8852#8852 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Multithreadingcrash due toosgDb::Registry::instance()
I remember the first time I heard about the double-checked locking
problem five years ago or more and then wasting an afternoon trying to
understand what the heck was going on. I was never the same again.
I sometimes long for those halcyon days when the universe was a simpler
place. :)
-Paul
J.P. Delport wrote:
Hi all,
for those interested in instruction order issues, these videos might be
interesting (search google video):
* Herb Sutter - Machine Architecture: Things Your Programming Language
Never Told You
* IA Memory Ordering
There is quite a bit of work going into the next C++ standard to address
some of these issues. Sutter others have written a lot about it in the
last few months, a search should send you down the rabbit hole.
cheers
jp
I-Nixon, Anthony D wrote:
Thanks for the pointer Paul. The points you raise do apply to C++ as
well, and it seems the consensus is that it is not possible to implement
the double-checked locking pattern in portable C++ safely.
See Scott Meyer's and Andrei Alexandrescu's paper here
http://www.aristeia.com/Papers/DDJ_Jul_Aug_2004_revised.pdf
If Scott Meyer's says it can't be done, I tend to believe him :-)
From Scott's paper:
In many cases, initializing a singleton resource during single-threaded
program startup
(e.g., prior to executing main) is the simplest way to offer fast,
thread-safe
singleton access.
So the best thing to do is to advertise in large bold letters somewhere
in the doco (and FAQ) that if you are going to use multithreading, all
instances need to be accessed before threading starts.
Anthony
-Original Message-
From: Paul Speed [mailto:psp...@progeeks.com] Sent: Friday, 20 March
2009 2:21 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] Multithreadingcrash due
toosgDb::Registry::instance()
Just a note for those of us who have been bitten by double check
locking issues in Java, this technique is highly dependent on the
threading and data architecture in use. There are subtle issues
between when a thread commits its local state and the possibility for
the compiler to reorder statements. This was less of an issue on
single-core boxes but comes up in multi-core where the local thread
state may not be committed. I can't be sure but there may have also
been some subtle statement reordering issues with respect to the
compiler not knowing that your guard release _must_ be run after the
instance_ = new Singleton has _fully_ executed.
I don't know if these problems crop up in C++ but it certainly seems
like they could depending on the threading implementation and
compiler optimization strategy.
Worst case for a singleton pattern is that you might get a race
condition where two instances are created. There are other
double-checked locking situations that are much more insidious.
-Paul
Paul Melis wrote:
Robert Osfield wrote:
2009/3/17 Schmidt, Richard richard.schm...@eads.com
mailto:richard.schm...@eads.com
http://www.cs.wustl.edu/~schmidt/PDF/DC-Locking.pdf
http://www.cs.wustl.edu/%7Eschmidt/PDF/DC-Locking.pdf
Could you explain what the above document is all about...
I just read it an it describes a pattern where you use a mutex to
guard access to the singleton's _instance value, but in such a way
that the mutex is only needed when _instance == NULL, i.e.
class Singleton
{
public:
static Singleton *instance (void)
{
// First check
if (instance_ == 0)
{
// Ensure serialization (guard constructor
acquires lock_).
GuardMutex guard (lock_);
// Double check.
if (instance_ == 0)
instance_ = new Singleton;
}
return instance_;
// guard destructor releases lock_.
}
private:
static Mutex lock_;
static Singleton *instance_;
};
This should give you thread-safe access to Singleton-instance() at
all times combined with correct initialization.
Quite neat actually,
Paul
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[osg-users] OSX Cmake/Xcode path problems under Debug
When I build OSG (latest svn) with Xcode (generated by Cmake), I've noticed some problems when compiling with the Debug configuration. I'm trying to fix these, but if anybody has some clue how to force Cmake to work better, please chime in. 1. I submitted a patch (not yet committed) that will use the OSG_DEBUG_POSTFIX (by default: d) when loading plugins, but this depends on _DEBUG being defined at compile time. However, _DEBUG is not being defined. Thus, plugins are not being loaded unless I put in a symbolic link from the name OSG is expecting to the name it is actually given. 2. Under my build directory (I am doing out of source builds), the libraries are built in the directory: build/lib/Debug, and the plugins are built in the directory: build/lib/osgPlugins-2.9.1/Debug. This causes problems when testing (without installing) because osg doesn't try to to add the intermediate Debug directory. It would be really nice if the two paths above were build/lib/Debug and build/lib/Debug/osgPlugins-2.9.1. Anyone know how to get cmake to do this? -Eric ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] transforming normals
Hi, I'm writing a simple nodevisitor to compute the lightmap of a given node. This nodevisitor treats transforms and geodes specially, so that each vertex in the geometry is multiplied with the most recent transform matrix in order to obtain world coordinates. So far the above code works well except that i don't know how to transform the normals. Can I obtain the normal matrix directly from the transformation matrix, if so how? Thank you, Can -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8857#8857 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] transforming normals
Paul Melis wrote: Can Hosgor wrote: I'm writing a simple nodevisitor to compute the lightmap of a given node. This nodevisitor treats transforms and geodes specially, so that each vertex in the geometry is multiplied with the most recent transform matrix in order to obtain world coordinates. So far the above code works well except that i don't know how to transform the normals. Can I obtain the normal matrix directly from the transformation matrix, if so how? If M is your transformation matrix then (M^-1)^T transforms your normals (that's the transposed inverse of M). You might have to rescale your normals so they become unit length again, after using the above matrix Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FFmpeg plugin
:( ok. I downloaded, compiled and instaled zlib-1.2.3 built ffmpeg from svn again with new zlib installed in osg i changed the directories of zlib to the new zlib in ccmake cmakelist.txt in OpenSceneGraph-2.9.1 directory: ./configure make clean make the example was built again but . running example with ./osgmovie -e ffmpeg video.avi or .mpg the movie runs but the same error apears. Warning: dynamic library '/usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so' exists, but an error occurred while trying to open it: /usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so: undefined symbol: inflateInit_ image-s()640 image-t()=480 aspectRatio=1 Transparent movie, enabling blending. My sistem is Ubuntu 8.04 videocard nvidia 8800 gtx motherboard P5N-T DELUXE Intel(R) Core(TM)2 Quad CPUQ6600 @ 2.40GHz say me if you need more information . i realy need to play movies with ffmpeg. tks 2009/3/20 Robert Osfield robert.osfi...@gmail.com Hi Carlos, What happens when you run: osgmovie -e ffmpeg a_video.mpg Is it still reporting that it can't load the plugin? I suspect that you are still hitting against the plugin not loading correctly. The inflatInit method is still being reported as not found and this function is from zlib then ffmpeg is built without linking against zlib which is needs. Linking against zlib ourselves in our ffmpeg could a solution. It's odd that you're having problems wheras others aren't. What is the exact spec of your system? Robert. 2009/3/20 Carlos Sanches ces...@gmail.com ok , now i m using svn version of ffmpeg. bow the example runs but the message still apear I put the the lines in main function of my program:: std::string libName = osgDB::Registry::instance()-createLibraryNameForExtension(ffmpeg); osgDB::Registry::instance()-loadLibrary(libName); but looks like that its using xine yet . and the old error continues. *** glibc detected *** ./OSG: free(): invalid pointer: 0x0b1f8fc7 *** === Backtrace: = /lib/tls/i686/cmov/libc.so.6[0xb73e9a85] /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb73ed4f0] /usr/local/lib/osgPlugins-2.9.1/osgdb_xine.so[0xb7f7c823] /usr/lib/libxine.so.1[0xb58484d8] === Memory map: Why my ffmpeg is not in use ? I have to modify something in osgDB ? 2009/3/20 Robert Osfield robert.osfi...@gmail.com HI Carlos, Our plugin doesn't contain any inflateInit_ or inflate method of any kind, so the missing sybmol must be coming from ffmpeg itself. I haven't see this error myself when building from various versions of ffmpeg so perhaps it's version 0.5 that has gone astray. Have a look in ffmpeg itself for the inflateInit_ method. Another thing you could try is using the svn version of ffmpeg, or the ffmpeg libs pulled down from the Ubuntu repositories. Robert. 2009/3/19 Carlos Sanches ces...@gmail.com Ok , I did it . now I m trying to run de example: osgmovie -e ffmpeg this error occours Warning: dynamic library '/usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so' exists, but an error occurred while trying to open it: /usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so: undefined symbol: inflateInit_ Usage: ./osgmovie [options] filename ... Options: ... 2009/3/19 Adrian Egli OpenSceneGraph (3D) 3dh...@gmail.com I am working with windows, no problem there, but here my settings. Variable Name: FFMPEG_LIBAVCODEC_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVCODEC New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVCODEC_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avcodec-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVDEVICE New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avdevice-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVFORMAT New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avformat-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVUTIL New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avutil-49.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBSWSCALE_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/libswscale New Value (Enter to keep current value): Variable Name: FFMPEG_LIBSWSCALE_LIBRARIES
Re: [osg-users] transforming normals
Can Hosgor wrote: I'm writing a simple nodevisitor to compute the lightmap of a given node. This nodevisitor treats transforms and geodes specially, so that each vertex in the geometry is multiplied with the most recent transform matrix in order to obtain world coordinates. So far the above code works well except that i don't know how to transform the normals. Can I obtain the normal matrix directly from the transformation matrix, if so how? If M is your transformation matrix then (M^-1)^T transforms your normals (that's the transposed inverse of M). Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] switch between two camera
Hi ben, where did you put your code? I put them in the updatecallback function, that's why mine will change every frame. Yun 2009/3/20 Ben ben.poul...@gmail.com benbao wrote: I try to use nodemask but doesn't work. Id do this : Code: osgViewer::CompositeViewer viewer; osgViewer::GraphicsWindowEmbedded* gw = new osgViewer::GraphicsWindowEmbedded; osgViewer::View* vue2D = new osgViewer::View; osgViewer::View* vue3D = new osgViewer::View; viewer.addView(vue2D); viewer.addView(vue3D); vue2D-getCamera()-setGraphicsContext(gw ); vue2D-getCamera()-setProjectionMatrixAsPerspective(30.0f, width()/(double) height(), 1.0, 1000.0); vue2D-getCamera()-setViewport(new osg::Viewport(0,0,width(),height() )); vue2D-setCameraManipulator(new osgGA::TrackballManipulator); vue3D-getCamera()-setGraphicsContext(gw ); vue3D-getCamera()-setProjectionMatrixAsPerspective(30.0f, width()/(double) height(), 1.0, 1000.0); vue3D-getCamera()-setViewport(new osg::Viewport(0,0,width(),height() )); vue3D-setCameraManipulator(new osgGA::TrackballManipulator); Code: // to switch vue3D OFF and vue2D on vue2D-getCamera()-setNodeMask(0X); vue3D-getCamera()-setNodeMask(0); sorry it's work, but only the view on top is updated by mouse manipulator. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8854#8854 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Cheers, Yun ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OpenCL: democracy for GPU computing?
Yes I would much prefer a cross platform well supported API than be forced to buy NVidia (and have to tell my customers to). But at the moment a lot of the OSG demos do not render properly on any other cards (at least on Windows) just because of the poor OpenGL drivers - so I'm not holding my breath for them to all correctly implement the OpenCL spec. If GPGPU is going to become mainstream then we do need something like OpenCL (else DirectX will do it!). At the moment it doesn't matter - the application is generally so specialised that requiring a particular board isn't a problem. But an industry wide spec for something which is technically complex and only used in niche areas needs a strong driving force behind it. OpenGL really took off because of SGI not a loose industry-wide steering group. Still - you never know it might all work out :-) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8862#8862 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] ShadowMap Required OpenGL Extensions
My application checks for the existence of some OpenGL extensions before
allowing ShadowMap to be turned on. So far, I have been using this test:
if (GL_EXT_framebuffer_object
(GL_ARB_fragment_program || GL_EXT_fragment_program)
(GL_ARB_fragment_program_shadow || GL_EXT_fragment_program_shadow))
{
//enable ShadowMap
}
Note that I am using the 'fixed function fallback' by calling clearShaderList()
after init() but before first frame.
However, I have come across a graphics card that passes this test, yet does not
render shadows properly.
This graphics card has these key extensions:
GL_EXT_framebuffer_object
GL_ARB_fragment_program
GL_ARB_fragment_program_shadow
GL_ARB_fragment_shader
As far as I can tell, the only extensions this card does NOT have, that my
other card (which renders shadows fine) does is:
GL_ARB_texture_non_power_of_two
GL_ATI_texture_mirror_once
GL_EXT_clip_volume_hint
GL_EXT_texture_mirror_clamp
Does ShadowMap require any of these extensions?
Also, FYI, the graphics card in question has many more extensions that my
working card does not have:
GL_ARB_fragment_shader
GL_ARB_half_float_pixel
GL_ARB_multisample
GL_ARB_pixel_buffer_object
GL_ARB_shader_objects
GL_ARB_shading_language_100
GL_ARB_texture_rectangle
GL_ARB_transpose_matrix
GL_ARB_vertex_buffer_object
GL_ARB_vertex_shader
GL_S3_s3tc
GL_EXT_compiled_vertex_array
GL_EXT_Cg_shader
GL_EXT_framebuffer_blit
GL_EXT_framebuffer_multisample
GL_EXT_gpu_program_parameters
GL_EXT_packed_depth_stencil
GL_EXT_pixel_buffer_object
GL_EXT_point_parameters
GL_EXT_stencil_two_side
GL_EXT_texture_compression_s3tc
GL_EXT_texture_cube_map
GL_EXT_texture_filter_anisotropic
GL_EXT_texture_lod
GL_EXT_texture_sRGB
GL_EXT_timer_query
GL_IBM_rasterpos_clip
GL_KTX_buffer_region
GL_NV_copy_depth_to_color
GL_NV_depth_clamp
GL_NV_fence
GL_NV_float_buffer
GL_NV_fog_distance
GL_NV_fragment_program
GL_NV_fragment_program_option
GL_NV_framebuffer_multisample_coverage
GL_NV_half_float
GL_NV_multisample_filter_hint
GL_NV_occlusion_query
GL_NV_packed_depth_stencil
GL_NV_pixel_data_range
GL_NV_point_sprite
GL_NV_primitive_restart
GL_NV_register_combiners
GL_NV_register_combiners2
GL_NV_texture_compression_vtc
GL_NV_texture_env_combine4
GL_NV_texture_expand_normal
GL_NV_texture_shader
GL_NV_texture_shader2
GL_NV_texture_shader3
GL_NV_vertex_array_range
GL_NV_vertex_array_range2
GL_NV_vertex_program
GL_NV_vertex_program1_1
GL_NV_vertex_program2
GL_NV_vertex_program2_option
GL_SUN_slice_accum
Thanks,
-Ben
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Re: [osg-users] compile error in osgwrapper_osgUtil PrintVisitor
Hi Csaba, Thanks for the note. I'm now reproduce the build error at my end and working on a fix. Robert. On Fri, Mar 20, 2009 at 2:47 PM, Csaba Halász csaba.hal...@gmail.comwrote: Hi Robert! Another user reported this, but my nightly build also exhibits the same problem. Details here: http://www.cdash.org/CDashPublic/viewBuildError.php?buildid=14829 As we don't really need wrappers, this is just for your information in case you missed it. -- Csaba ___ 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] FFmpeg plugin
HI Carlos, As I don't see any of these problems, I'm afraid there isn't much I can do apart from make suggestions for you to try out. Right now it looks like you'll need to add the zlib library into the build of other ffmpeg or our plugin. Robert. 2009/3/20 Carlos Sanches ces...@gmail.com :( ok. I downloaded, compiled and instaled zlib-1.2.3 built ffmpeg from svn again with new zlib installed in osg i changed the directories of zlib to the new zlib in ccmake cmakelist.txt in OpenSceneGraph-2.9.1 directory: ./configure make clean make the example was built again but . running example with ./osgmovie -e ffmpeg video.avi or .mpg the movie runs but the same error apears. Warning: dynamic library '/usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so' exists, but an error occurred while trying to open it: /usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so: undefined symbol: inflateInit_ image-s()640 image-t()=480 aspectRatio=1 Transparent movie, enabling blending. My sistem is Ubuntu 8.04 videocard nvidia 8800 gtx motherboard P5N-T DELUXE Intel(R) Core(TM)2 Quad CPUQ6600 @ 2.40GHz say me if you need more information . i realy need to play movies with ffmpeg. tks 2009/3/20 Robert Osfield robert.osfi...@gmail.com Hi Carlos, What happens when you run: osgmovie -e ffmpeg a_video.mpg Is it still reporting that it can't load the plugin? I suspect that you are still hitting against the plugin not loading correctly. The inflatInit method is still being reported as not found and this function is from zlib then ffmpeg is built without linking against zlib which is needs. Linking against zlib ourselves in our ffmpeg could a solution. It's odd that you're having problems wheras others aren't. What is the exact spec of your system? Robert. 2009/3/20 Carlos Sanches ces...@gmail.com ok , now i m using svn version of ffmpeg. bow the example runs but the message still apear I put the the lines in main function of my program:: std::string libName = osgDB::Registry::instance()-createLibraryNameForExtension(ffmpeg); osgDB::Registry::instance()-loadLibrary(libName); but looks like that its using xine yet . and the old error continues. *** glibc detected *** ./OSG: free(): invalid pointer: 0x0b1f8fc7 *** === Backtrace: = /lib/tls/i686/cmov/libc.so.6[0xb73e9a85] /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb73ed4f0] /usr/local/lib/osgPlugins-2.9.1/osgdb_xine.so[0xb7f7c823] /usr/lib/libxine.so.1[0xb58484d8] === Memory map: Why my ffmpeg is not in use ? I have to modify something in osgDB ? 2009/3/20 Robert Osfield robert.osfi...@gmail.com HI Carlos, Our plugin doesn't contain any inflateInit_ or inflate method of any kind, so the missing sybmol must be coming from ffmpeg itself. I haven't see this error myself when building from various versions of ffmpeg so perhaps it's version 0.5 that has gone astray. Have a look in ffmpeg itself for the inflateInit_ method. Another thing you could try is using the svn version of ffmpeg, or the ffmpeg libs pulled down from the Ubuntu repositories. Robert. 2009/3/19 Carlos Sanches ces...@gmail.com Ok , I did it . now I m trying to run de example: osgmovie -e ffmpeg this error occours Warning: dynamic library '/usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so' exists, but an error occurred while trying to open it: /usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so: undefined symbol: inflateInit_ Usage: ./osgmovie [options] filename ... Options: ... 2009/3/19 Adrian Egli OpenSceneGraph (3D) 3dh...@gmail.com I am working with windows, no problem there, but here my settings. Variable Name: FFMPEG_LIBAVCODEC_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVCODEC New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVCODEC_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avcodec-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVDEVICE New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVDEVICE_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avdevice-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVFORMAT New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVFORMAT_LIBRARIES Description: Path to a library. Current Value: F:/dev/ffmpeg/SDK/lib/avformat-52.lib New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_INCLUDE_DIRS Description: Path to a file. Current Value: F:/dev/ffmpeg/SDK/include/LIBAVUTIL New Value (Enter to keep current value): Variable Name: FFMPEG_LIBAVUTIL_LIBRARIES Description: Path to
Re: [osg-users] GraphicsContext problem
nobody had the same thing? On Fri, Mar 20, 2009 at 12:20 PM, Lingyun Yu lingyun.yu...@gmail.comwrote: Hi guys, I want to use OpenGL to render the interface, but use OSG to render in a region. And in this region I use OSG manipulator, but in the rest of the interface I use others. I don't know if it is possible, if it is, how to do? Thanks in advance. -- Cheers, Yun -- Cheers, Yun ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] GraphicsContext problem
Hi Yun, Have a look through the osg-users archives, there has been plenty discussed about OpenGL/OSG integration. It's a bit tricky due to state management, so if you can I'd recommend just using OSG all the way as it'll lead to better performance and an easier life alround. Robert. 2009/3/20 Lingyun Yu lingyun.yu...@gmail.com nobody had the same thing? On Fri, Mar 20, 2009 at 12:20 PM, Lingyun Yu lingyun.yu...@gmail.comwrote: Hi guys, I want to use OpenGL to render the interface, but use OSG to render in a region. And in this region I use OSG manipulator, but in the rest of the interface I use others. I don't know if it is possible, if it is, how to do? Thanks in advance. -- Cheers, Yun -- Cheers, Yun ___ 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] LocalParticleSystem and ModularEmitter.cpp
Hi all, Some background first: I've upgraded my code from 2.4 to 2.8. I have a queue of ParticleEffects contained by osg::PositionAttitudeTransform's that get moved around. So whoever was the last effect to move, gets put into a new position and reset to look as if it's a totally new effect. An alternative method would be to delete the oldest when adding a new one and a preset limit is reached. However, this is what I did to just reuse the previously created effect. If you don't use LocalParticleSystem, you'll get a smoke trail (from the old to new pos) for smoke (which in this case we don't want) or a fire trail or whatever. This issue I've noticed in 2.8: When you use a LocalParticleSystem on an Effect in 2.8, the Effects just sit at the origin (which is not what happened before). It seems to happen due to a change in ModularEmitter.cpp. It seems the code was changed to support Earth-centric coordinate system. The full comment on the change is: From Tim Moore, his submission fixes a bug when the ModularEmitter and ParticleSystem are in different frames of reference. Specifically, it supports the case where the ParticleSystem is not in the world frame. One way this can come up is if your world coordinate system is Earth-centric; the float coordinates of particles don't have enough precision to avoid terrible jitter and other rendering artifacts, so it's convenient to root the particle systems in a local Z-up coordinate system that gets moved around from time to time. So, is there a way to get ParticleEffects with setUseLocalParticleSystem(true) to behave like the use too? Thanks, Mike Dorsett ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] VPB osgTerrain basic functionality
Hi all! I was wondering can someone give me a few hints on what to look for in VPB in sense of its functionality. I not sure for instance what happens when you push a image file trough osgdem. From what i see as a result it seems that heightmap image and texture get fragmented and put into hierarchical structure of nodes with different LOD(TerrainTiles). Files with different LOD are then used in paging mechanism to dynamicly load generated terrain fragments at runtime.Is this so? Does it mean that there are no algorithms such as ROAM used? ALso, i would like to be sure of what does osgTerrain do. Ive tried to read sources (Im not an experienced programmer ;)) and from what i see TerrainTechnique is used as an interface for real culling and updating functionality of terrain node, Locator is used as a coordinate system manager. osgTerrain seems to be a wrapper around a HeightField, and what ive seen from osgTerrain example it does not include any LOD functionality. Im sorry for swamping with questions and toughts, but there is little or no documentation about this, and understanding things by reading sources is very time-consuming. Im generaly interested in abstract models that are used in osgTerrain and VPB, more precisely in basic functionality guidelines, so i could at least make my way trough sources faster. Many thanks! :) _ View your Twitter and Flickr updates from one place – Learn more! http://clk.atdmt.com/UKM/go/137984870/direct/01/___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] VRML Normal Issue
I have noticed a very strange issue regarding VRML file rendering. This issue happens in OSG viewer version 2.6, with openVRML version 0.14.3. Please view the two attached vrml files and observe very different shading on the 2 cubes. The only difference between the files is that in goodbox.vml, the coordinate indices are used only once per triangle. In badbox.wrl, the 8 vertices are reused for multiple triangles. You can see that in goodbox.vml, I duplicated the vertices so that they would be used only once. For example, for index '0', I copied it and made it also index 8 through 12, then used those new indices in the coordIndex[] definition. I think that the vrml parser tries to interpolate vertex vectors from the triangles they belong to. If a vertex belongs to two ore more triangles which are not co-planar then the vertex vector is something in between the different surface normals of the different triangles. And because normal vectors along a triangle surface are interpolated from the vertex normals, this leads to a gradient along the triangle surface (because the vertex normals are not pointing in the same direction). Hence, if only co-planar triangles share their points the problem disappears. Are there some VRML flags to prevent this behavior? Is this a bug in the VRML parser? If so, is this part of OSG or openVRML? Thanks, -Ben goodbox.wrl Description: goodbox.wrl badbox.wrl Description: badbox.wrl ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [build] Preprocessor macros / OSX
Hi, what is the official preprocessor macro to define the OSX platform? It seems to me that only __APPLE__ is used. Therefore, there is no distinction between Cocoa and Carbon? Thank you. Hartwig -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8871#8871 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FFmpeg plugin
Hi Carlos, On 21/3/09 3:17 AM, Carlos Sanches wrote: the example was built again but . running example with ./osgmovie -e ffmpeg video.avi or .mpg the movie runs but the same error apears. Warning: dynamic library '/usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so' exists, but an error occurred while trying to open it: /usr/local/lib/osgPlugins-2.9.1/osgdb_ffmpeg.so: undefined symbol: inflateInit_ You could try to run 'ldd osgdb_ffmpeg.so' and also on the various ffmpeg libraries to try and find out where (or if) they're looking for zlib. Cheers, /ulrich PS: Could you *please* *not* copy the entire mail thread in your replies? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] How to build osgdem
Hi, I did successfully build OSG2.8, but neither the 'bin' directory or the 'share/OpenSceneGraph/bin' directory has the executable 'osgdem'. I have been looking at various posts that talk about using osgdem to load .dem files, but I don't seem to find it. I do have 'gdal' installed and built OSG with gdal support as well. Can anyone tell me what might I be missing? Another sub question - Can osgdem load dted files (dt0, dt1, etc) ? Thank you, Vijay. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8874#8874 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to build osgdem
Hi Vijay, OSGDEM is part of the VirtualPlanetBuilder project. You can find it here http://www.openscenegraph.org/projects/VirtualPlanetBuilder OSGDEM will generate .IVE files from your .dem/.dt files. After you have .IVE files you can use OSGVIEWER to view them. Good Luck - Mark -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of vijay kalivarapu Sent: Friday, March 20, 2009 3:45 PM To: osg-users@lists.openscenegraph.org Subject: [osg-users] How to build osgdem Hi, I did successfully build OSG2.8, but neither the 'bin' directory or the 'share/OpenSceneGraph/bin' directory has the executable 'osgdem'. I have been looking at various posts that talk about using osgdem to load .dem files, but I don't seem to find it. I do have 'gdal' installed and built OSG with gdal support as well. Can anyone tell me what might I be missing? Another sub question - Can osgdem load dted files (dt0, dt1, etc) ? Thank you, Vijay. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8874#8874 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Build Error on Windows
Hello all,
I'd like to report a build error I encountered on Windows using CMake
2.4 and default CMAKE_INSTALL_PREFIX. The default value for the install
prefix is C:/Program Files/OpenSceneGraph (without the quotes). The
space in the path appears to confuse CMake when generating the project
file for osgDB. The problematic CMake source line is:
ADD_DEFINITIONS(-DOSG_DEFAULT_LIBRARY_PATH=${CMAKE_INSTALL_PREFIX}/lib${LIB_POSTFIX}/${OSG_PLUGINS})
CMake splits this line at the space, creating an output line of
-DOSG_DEFAULT_LIBRARY_PATH=C:/Program plus an additional compiler
option of Files/OpenSceneGraph/lib/osgPlugins-2.8.0. The compiler
tries to compile this as a file and throws an error. Putting quotes
around the string for the CMAKE_INSTALL_PREFIX option fixes the problem.
In addition to noting this build problem, I would like to question the
desirability of storing the install path in the binary. The users of my
software certainly won't be installing OSG in a fixed path determined at
the time I compile the software, so best case here is a useless check of
a nonexistent directory. Worst case is that another build of OSG is in
that directory with plugins built with incompatible compiler options,
leading to a crash. I suggest removing this osg default library path or
having an option to disable it (preferably with disabled being the default).
Regards,
Mark
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[osg-users] how to draw ms3d model
Hi all, In our application, hundreds of human animated models should be loaded into scene. We use ms3d format models. Now we do it as follow: 1. load models 2. create a osg::Geode and add it to scene 3. add a osg::Drawable to this Geode 4. add a osg::NodeCallback to this Geode 5. calculate and update models in the NodeCallback 6. draw models in drawImplementation of the Drawable (using OpenGL). Maybe there is better way to render ms3d model. Could you please give me some advice? Thanks for your helps. Su Hu ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
