Re: [osg-users] Failure in casting to osg::AnimationPathCallback*
Hi all, Thanks for the pointers to the source of the problem. Indeed it is related to symbol visibility. For reference, I had to change Xcode's default settings as follows: GCC_SYMBOLS_PRIVATE_EXTERN = NO (Setting name in Xcode is Symbols Hidden by Default) GCC_INLINES_ARE_PRIVATE_EXTERN = NO (Setting name in Xcode is Inline Methods Hidden) and finally things work as expected on OS X. In my case I needed both for the fix. For reference, this is with Clang/LLVM 4.2.1. A thread on the Clang/LLVM mailing list indicates that there is a warning flag which can be activated to alert to these kind of issues: -Wweak-vtables With the default Xcode settings (hiding symbols not explicitly exported) and this warning activated, I got a lot of warnings like: 'ResetAnimationNodesVisitor' has no out-of-line virtual method definitions; its vtable will be emitted in every translation unit This is in spite of it clearly having a virtual method -- it would be more helpful if the weak vtables check could have told me that the vtable was being discarded by the symbol hiding, rather than not being created at all. A missing (or weak) vtable would certainly prevent RTTI from working correctly. Many thanks for the help with a rather obscure problem. Regards, Phil. On 8/02/2013, at 8:40 AM, Robert Osfield robert.osfi...@gmail.com wrote: Hi Stephan, Thanks for the explanation, you learn something new everyday :-) Incompatibility like this I'd personally put down as a bug in the design/implementation rather than a feature. I am curious why we haven't seen this particular issue more often. If the visibility of classes is hidden by default then we should be seeing these issues between OSG libs and applications all the time - for instance the code almost identical that that Philip is using is used in osgPresentation with it doing dynamic_cast on objects provided by the core osg lib. The question next is really what to do about the issue. Just document the bug and it's workaround - changing symbol visibility via compiler options or do we change the OSG itself so it by default doesn't hide visibility of symbols. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Failure in casting to osg::AnimationPathCallback*
Hi all,
I'm running into an interesting bug in my code which manifests as behaviour
that works on one platform (Windows) and not on another (OS X) with the same
OSG code. (Using OSG trunk, around 3.1.4)
I am using the following node visitor to reset animations attached to transform
nodes:
class ResetAnimationNodesVisitor : public osg::NodeVisitor
{
public:
ResetAnimationNodesVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN) {}
virtual void apply(osg::Transform transform)
{
osg::NodeCallback *nc = transform.getUpdateCallback();
osg::AnimationPathCallback* apc =
dynamic_castosg::AnimationPathCallback*(nc);
if (apc) {
apc-reset();
apc-update(transform);
}
traverse(transform);
}
};
This visitor is instantiated on a node thus:
void resetAnimationTime(osg::ref_ptrosg::Node modelNode)
{
ResetAnimationNodesVisitor ranv;
modelNode-accept(ranv);
}
When compiled and run on an animated model under Windows (compiled with Visual
Studio 2010 SP1) all works as expected. When the exact same code is compiled
and run under OS X (using Xcode 4.5.2, with LLVM 4.2.1) the dynamic cast to
osg::AnimationPathCallback* is always NULL.
I have checked that RTTI is not disabled (it's on by default, and no errors are
produced by the dynamic_cast, and that indeed things are as expected with
this snippet inside apply():
if (nc) osg::notify(osg::NOTICE) UpdateCallback: className is
std::string(transform.getUpdateCallback()-className()) and type_id.name()
is typeid(transform.getUpdateCallback()).name() std::endl;
which produces the output:
UpdateCallback: className is AnimationPathCallback and type_id.name() is
PN3osg12NodeCallbackE
So it looks like a failure somewhere in RTTI. Both typeid and the
dynamic_cast fail to convert the osg::NodeCallback* to an
osg::AnimationPathCallback*. Yet clearly, the callback IS the right type, as
evidenced by OSG's className() function's output.
Any ideas about where this kind of issue might be coming from?
Regards,
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Re: [osg-users] How can I create a polgons with gaps for texts inside the polygon?
Have you considered an approach using stenciling? The general approach is to draw your labels (text) first with stencil buffer writes enabled. Then disable stencil writes, and draw the rest of your scene. When you come to drawing the lines or polygons which should have the outlines of the text removed, then enable the stencil test. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52177#52177 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] “Include can't be =?UTF-8?Q?found=E2=80=9D?=, how to fix it?
You'll also need to add /Library/Frameworks to the Frameworks search path in your project settings. Regards, Phil. On 12/01/2013, at 3:02 AM, Mohamed Alji osgfo...@tevs.eu wrote: Hi, I am developing using OpenSceneGraph. I installed it from a user-runnable installer. When I try to compile an application using OpenSceneGraph, I have this Include can't be found for all includes, like . ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] seg fault with text-setText(mystring) called in NodeCallback
If you're developing on Windows under visual studio one thing you should check
is that all libraries are linked with the same runtime. I have seen weird
segfaults using std::string when linking debug binaries with binaries built
using release mode.
Apparently Microsofts debug and release runtimes have different implementations
of std::string leading to misalignment and overflow when passing strings
between modules.
Regards,
Phil
On 12/01/2013, at 12:44 AM, DavidHornung horn...@googlemail.com wrote:
Hi Robert,
i have tested you tip, but it in my case it seems not to work.
I only call the setText() method via my NodeVisitor, also run the viewer in
SingleThreaded mode, and set text-setDataVariance(osg::Object::DYNAMIC).
what else could be wrong?
David
Hi David,
Best guess would be that you are running the viewer multi-threaded
(it's default if you have a multicore processor) and the update
traversal to the text is occurring at the same time as the draw
traversal that is reading. The solution is to tell the scene graph
that you plan to dynamically update the text object so that it knows
not to overlap the update/event and draw traversals. You can do this
by using text-setDataVariance(osg::Object::DYNAMIC);
Robert.
On 10 January 2013 16:41, DavidHornung horn...@googlemail.com wrote:
Hello,
i have a seg fault because the osgText::Text::setText(std::string) is not
thread-save.
It appears from type to time
Why get I this seg fault sometimes?
I have the following setup
class ObjectGroup : public osg::Group
{
...
ObjectGroup()
{
...
text = osgText::Text;
this-addChild(text);
this-setUpdateCallback(new ObjectNodeCallback);
}
//called from NodeCallback
void updateText()
{
text-setText(myText);
}
private:
osgText::Text text;
std::String myText;
...
};
class ObjectNodeCallback : public osg::NodeCallback
{
//override
operator ()(osg::Node* node, osg::NodeVisitor* nv)
{
osg::ref_ptrObjectGroup obj =
dynamic_castObjectGroup*(node);
obj-updateText();
traverse(node, nv);
}
};
Cheers,
David
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Re: [osg-users] Build Install OpenSceneGraph-3.1.3 give me a No WindowSystemInterface error ?
If you'd like a more recent Mac OSG binary which includes a user-runnable installer, OSG Frameworks supporting both 32 and 64-bit archs, etc. you can use the one published by ARToolworks: http://www.artoolworks.com/dist/openscenegraph/3.1.x/ It doesn't include the COLLADA (.dae) plugin but most other plugins are present. Regards, Phil. On 6/01/2013, at 12:18 PM, Chris Hanson xe...@alphapixel.com wrote: You can get an OSG 3.0.1 pre-built OSX binary from my site: http://alphapixel.com/osg/downloads/free-openscenegraph-binary-downloads You'll need a 7zip extractor to uncompress them: http://www.macupdate.com/app/mac/19139/ez7z I can't help you a whole lot as I am not a Mac developer myself, but see if those will run for you. On Sat, Jan 5, 2013 at 2:10 PM, Mohamed Alji osgfo...@tevs.eu wrote: Hi, I would like to use pre-binaries if possible but I could not make it work. I used MacPort to install OSG ... Do you advise me to try somehow different ? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Huge binaries on Android.
Thanks everyone for the help. I have identified two things. The first was a blunder on my part; I was looking at my linked dylib in obj/local, which includes all the debug symbols. The ndk-build 'Install' step actually strips the shared lib before placing it in lib/, and this was a much more reasonable size. The second thing I did was add: LOCAL_CPPFLAGS += -fvisibility-hidden to my Android.mk and that shrinks things a bit further too. End result is total of 40MB total for all 4 architectures. Regards, Philip Lamb On 22/11/2012, at 9:12 PM, Jorge Izquierdo Ciges jori...@gmail.com wrote: I think Matthias is totally right. Android NDK toolchain doesn't use strip when generating static libraries (it's not safe for all the cases). Usually when you are compiling the final dylib that is loaded through Java the toolchan uses stripping to reduze the size. but i think that it is only used IF you are using the ndk-scripts. So maybe if you have set your own compile configuration you didn't include that step. More info about stripping here: http://www.technovelty.org/linux/stripping-shared-libraries.html But the simple version is that stripping a dylib is safe. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Huge binaries on Android.
On 22/11/2012, at 11:44 PM, Jan Ciger jan.ci...@gmail.com wrote: Do you actually need to compile for MIPS and x86? x86 Android devices are very very rare and I have never heard about a MIPS one (maybe some TVs?). The armeabi and armeabi-v7a are the most common ones, in fact, if you want to cut down even more (and don't mind a bit of performance loss), armeabi binaries will run on everything. Yes, since we (ARToolworks) use OSG in our ARToolKit SDKs (across Windows, OS X, Linux, iOS and hopefully soon, Android :-) ), we have to anticipate that the users of our SDK will potentially run on any architecture supported by Android. Intel is making a push with Atom-based Android tablets, so x86 is likely to be more common going into 2013. There are a bunch of low-cost Android devices in China using MIPS. On another note made in the thread about attempting to replicate OpenCV's OpenCV Manager strategy for Android: to those developing the Android port of OSG, and on behalf of the users, don't do this. It makes for bad user experience. The user just wants to install and run your app, and then has to deal with what is this asking me to install NOW? along with the delay, logging in and fiddling with the Android market. We use OpenCV and we have gone to some lengths to statically link OpenCV to as to avoid having to put our users through this. It's basically trying to solve a problem which doesn't exist -- users really don't care that much about a couple of extra MB in size of your app. It also potentially breaks your app if the user installs new binaries including changes which are not completely backwards compatible. Regards, Phil. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Huge binaries on Android.
Hi all, I'm doing a few experiments with builds of OSG on Android, and thus far have things compiling and linking OK, but the size of the built binaries is HUGE. With building to static libs and in release mode, the libraries are weighing in at over 1GB per architecture. Once linked into a dylib, the finished product is still over 170MB per architecture.By way of comparison, the same type of build on iOS weighs in at around 40MB total for 2 architectures. Is there some Build massive binaries setting which I've inadvertently enabled? Or some strip options which I've missed or could add? Tips and/or experiences in this area gladly welcomed. Regards, Phil -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=51180#51180 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgFX::Outline implementation for OpenGL ES?
Hi all, osgFX::Outline is quite a useful effect to have, but due to its dependency on glPolygonMode, doesn't function on OpenGL ES implementations. Does anyone have any suggestions or even an implementation of osgFX::Outline that will work on OpenGL ES? There appear to be promising approaches out there which do two passes, where the second moves each vertex along its normal by an amount proportional to the z distance in eye coordinates, but I wouldn't even know where to begin to implement this in OpenSceneGraph within the existing osgFX classes. Regards, Phil ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [forum] Wiki editing contact
Jordi, I'm keen to help where I can. I'd like to update and move the osgExp pages over as soon as possible. Would you please grant me editing rights. Thanks, Phil. On 18/10/2012, at 9:47 PM, Jordi Torres jtorresfa...@gmail.com wrote: Hi Phil, Right now we are moving the wiki to a joomla site (see [1] and [2]). So I think it is worth to update the information in the new web. Community help is really appreciated :). [1]http://www.openscenegraph.com [2]http://www.openscenegraph.com/index.php/community/news/68-openscenegraph-com-website-needs-community-help ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgFX::Outline implementation for OpenGL ES?
So it looks like a viable option for an OpenGL ES 1.x-compatible outline is to scale the model in the second pass (rather than drawing wireframe), calculating the scaling factor so that it outlines the normal-size model by approximately the required amount. With a couple of approximations, the scaling factor works out a bit like this: scalef = ((2 * outlineWidth / viewPortHeight) + 1) * projection[1][1] * distanceFromCentreOfModelBoundingSpehereToEye / modelBoundingSphereRadius; and that's fine, but now the difficult part can a scaling operation even be implemented within the constraints of osgFX's pathways? If so, how? And if so, how can I retrieve the projectionMatrix, viewPort, and distance to the eyepoint? TIA, Phil. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50668#50668 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [forum] Wiki editing contact
Hi all, Who is responsible for assigning permissions to edit the OSG wiki? I followed the instructions here: http://www.openscenegraph.org/projects/osg/wiki/About/WikiEditing but have had no response. Some of the information on the wiki is woefully out of date and it would make sense to get community help to fix it. Regards, Phil -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50653#50653 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [forum] Site web down
Hi, The main OSG web is down again. The error reported is Trac database locked. Regards, Phil. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49392#49392 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Regarding osgOcean
Hi, I also have run into similar issues (errors about invalid forward declarations of fstream) when compiling osgDB on Mac OS X Xcode. I have identified the cause and two actions to take to fix the problem. The cause is that osgDB includes a header osgDB/fstream which is being picked up the #include fstream preprocessor line. The reason why this is occuring is that by default Xcode builds a headermap of all headers used in the project, and the local version of fstream is being used instead of the C++ standard library version. The fix is to add two build settings at the root of the OSG project: Code: HEADERMAP_INCLUDES_FLAT_ENTRIES_FOR_TARGET_BEING_BUILT = NO ALWAYS_SEARCH_USER_PATHS = NO Hope this helps. Regards, Phil -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=38318#38318 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [build] OSG 2.8.3 with XCode 3.2 on 10.6.4
From memory, OpenThreads.framework needs to be added into the link phase of some of the other frameworks and libs. If all you need is a working pre-compiled version of OSG 2.8.2 for Mac OS X, I have made an installer package available here: www.artoolworks.com/dist/openscenegraph/2.8.2/ Regards, Philip gabyx wrote: Hi, I have a general build problem: -I downloaded the 2.8.3 stable version ZIP file. - Compiled (out of the box) the XCode Project (Release 32bit Cocoa) - Compiles fine, no errors, all frameworks builded - Copied the Frameworks to /library/frameworks/ - Made a new XCode Project from Template of the ZIP (2.8.3) - This Project does not compile: - Included only the osg/* headers in the prefix header - It cannot find several files, header in the framework I think, this is strange: In file included from /Library/Frameworks/osg.framework/Headers/AlphaFunc:17, from .../Desktop/OSGTEST/OSGTEST_Prefix.pch:31: /Library/Frameworks/osg.framework/Headers/StateAttribute:19:38: error: osg/StateAttributeCallback: No such file or directory In file included from ...Desktop/OSGTEST/OSGTEST_Prefix.pch:83: /Library/Frameworks/osg.framework/Headers/ImageStream:18:27: error: osg/AudioStream: No such file or directory When I copy the missing headers in the frameworks, it compiles,but gives a linking error with: OpenThreads::Atomic::operator--(), referenced from: osg::Referenced::unref() constin main.o ld: symbol(s) not found collect2: ld returned 1 exit status What is wrong here, I dont know really how to get this working?... Could anyone help? Thank you! Cheers, Gabriel[/b] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=33744#33744 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG on IPhone
Hi all, I've just checked out the OSG iOS (a.k.a. iPhone) port which several of you have been putting a lot of effort into. Congratulations on the achievements so far. Am I correct in thinking that the branch at https://github.com/stmh/osg/tree/iphone contains the most recent efforts? I have two particular issues which I've encountered so far. The first is that on iOS retina-display devices (currently iPhone 4 and iPod Touch 4G) the graphics are being rendered only half-size. I saw some discussion on this in earlier posts, but I can't see any fixes for this in the current repo. Does anyone have a fix coded up waiting for testing? The second issue is that I'm not seeing animation on some animated OSG models. Are there known issues with animation in the current port? I'd like to help out where possible with this port, and I have a bunch of devices I can test on. Regards, Philip -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=33745#33745 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgViewer crash loading textures under Windows Vista
osgViewer (OSG v2.6, compiled under Windows XP SP3 with Visual Studio 2005 SP1) crashes while loading textured models (e.g. cow.osg) when I run it on a clean install of Windows Vista SP2. Before I go through the pain of installing VS on this copy of Vista to run the debugger, are there any known gotchas running OSG compiled under XP in Vista? I'm tempted to just tell the customer to go back to running our app under XP but I'm sure this unfortunately won't be the last time we end up having to support a deployment on Vista. Any help or experiences much appreciated. Regards, Philip Lamb ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Pausing and restarting animations in a subgraph read in via osgDB
Thanks for the help. However, I'm not sure how I go about locating which nodes have AnimationPathCallback attached in the nodevisitor. I think I understand that usually in a nodevisitor, one can just overload the accept() method with the node type one is interested in, but in this case the callbacks are attached to MatrixTransformation nodes; how to I identify whether a MatrixTransform has an attached AnimationPathCallback? If there's a piece of sample code which shows a method, I'd be happy just to be pointed to that. Regards, Phil. On 21/05/2009, at 9:44 AM, Robert Osfield wrote: Hi Phil, I would write a custom Registry::ReadFileCallback that loads the models using the standard Registry::readFileImplementation() way and then runs a custom visitor on the loaded model before returning this model to application. The custom visitor would look for nodes in the scene graph that are animated and then toggle their state to the state you want, and potentially add extra callbacks or mapping so that you application can keep track of these animating nodes. Robert. On Wed, May 20, 2009 at 9:20 PM, Philip Lamb p...@eden.net.nz wrote: Hi all, Apologies if the answer to this question should be self-evident, but I'm having some trouble implementing a solution for pausing, restarting, resetting and detecting the end of animations contained in a subgraph read in via osgDB. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Pausing and restarting animations in a subgraph read in via osgDB
Robert,
Thanks for this. It works well. When I get a moment, I'll write up a
patch for the osganimate example to add a play/pause function.
Regards,
Phil.
On 21/05/2009, at 10:48 AM, Robert Osfield wrote:
In the NodeiVisitor simply do:
void apply(osg::Transform tranform)
{
osg::AnimationPathCallback* apc =
dynamic_cast
osg::AnimationPathCallback*(transform.getUpdateCallback());
if (apc)
{
// do your stuff...
}
}
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Re: [osg-users] Pausing and restarting animations in a subgraphread in via osgDB
On 21/05/2009, at 4:21 PM, Thrall, Bryan wrote:
Also, if Philip wants to pause all animations in the scene (instead of
just ones from the subgraph), he could just pause the simulation
time in
the frame loop like this untested code:
... SNIP ...
Bryan,
That's a good tip, and closer to my original intent of having a global
pause / resume of all time-based things happening in the scene. For
reference for others, here is the code I've used. Class names removed
for sake of brevity.
In my application class header:
double _mySimulationTimeStart, _mySimulationTimePause,
_mySimulationTime;
bool _globallyPaused;
In my application class (_viewer is an osg::Viewer, already set up):
_viewer.realize();
_mySimulationTimeStart = _mySimulationTimePause =
_mySimulationTime = 0.0;
_globallyPaused = false; // Could also be true, to start in a
paused state.
while (!_Viewer.done())
{
_mySimulationTime = _viewer.getViewerFrameStamp()-
getReferenceTime() - _mySimulationTimeStart;
if (_globallyPaused) _viewer.frame(_mySimulationTimePause);
else _viewer.frame(_mySimulationTime);
}
and the handler for pause/resume events:
void setGloballyPaused(bool pause)
{
_globallyPaused = pause; // Set global state.
if (_globallyPaused) _mySimulationTimePause = _mySimulationTime;
else _mySimulationTimeStart += _mySimulationTime -
_mySimulationTimePause; // Add elapsed time since pause started to
offset.
That's it.
Incidentally, I've also discovered a bug/feature in
osg::AnimationCallback::reset(). if the animation callback is in a
paused state, the reset of the actual transform node which the
callback is attached to only takes effect once the animation callback
is placed into the unpaused state. This has the rather annoying effect
that if an animation has run its course, and has been paused, a reset
won't change it's state in the scene graph. I tried to work up a work-
around for this, but haven't so far.
Regards,
Phil.
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[osg-users] Pausing and restarting animations in a subgraph read in via osgDB
Hi all, Apologies if the answer to this question should be self-evident, but I'm having some trouble implementing a solution for pausing, restarting, resetting and detecting the end of animations contained in a subgraph read in via osgDB. Basically, I have some models with animations embedded (exported from 3DS Max via osgExp plugin for Max) and I load these in via osgDB. What I want to do is provide a set of controls to start the animations, pause them while in progress, resume them from pause, and then get a callback (or detect via some other means) when they've finished running. My idea in general was to use a keyboard handler which then creates a node visitor, asks the models to accept the visitor, and then in the visitor I change some state. Any hints on whether this is the recommended approach, and how to actually implement it gladly welcomed. Regards, Phil. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Stereo Problem
On 19/05/2009, at 12:44 AM, Jan Ciger wrote: The caveat with using quad-buffered mode is that Apple's machines don't include any means of signalling the shutter glasses or stereo goggles, so you're back to using something like the Stereographics blue-line detector box to perform the signal extraction. It doesn't work through the VGA pin 13 DDC signal? That is what NVIDIA used to use on consumer cards before and it is an option on Quadros too. No, and although it wouldn't be too hard to drive the DDC signal manually on a Mac (I believe this can be done through IOKit entirely from userland API) getting it to sync correctly to the page-flip is more challenging. My solution is clumsy but workable, which is two use the Stereographics Stereoenabler (http://reald-corporate.com/scientific/stereoenabler.asp ) and then take the vesa 3-pin stereo signal (http://www.stereoscopic.org/2001/standards.html ) and re-inject it into the VGA cable on pine 13 (the so-called ELSA revelator mode) via a custom-made adapter. This works well with the eMagin z800, which is still one of the best value 3D headsets out there. Regards, Phil. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Stereo Problem
I can back this up. I have it direct from an engineer at Apple that quad-buffered stereo is operational in almost the whole range of Apple cards. This apparently caused some difficulty between Apple and Nvidia in the past, as Nvidia wanted Apple to include the feature to drive sales of the high-end Quadro cards, and now stereo-in-a-window is only enabled on Quadro cards. The caveat with using quad-buffered mode is that Apple's machines don't include any means of signalling the shutter glasses or stereo goggles, so you're back to using something like the Stereographics blue-line detector box to perform the signal extraction. Regards, Phil. On 18/05/2009, at 9:27 PM, Jan Ciger wrote: Thomas Hogarth wrote: Hi Peted Liked your info on Quadbuffered opengl and stereo modes. I have one interesting point to add. I recently brought a MacBook with an Nvidia 9400m graphics card. This card 'does' support quadbuffered opengl and seemingly so do all recent Macs using Geforce graphics cards. Do you have some source to back this up? Did you try if it actually works? You can do that even without glasses - if the mode is broken/unsupported you get an OpenGL error about unsupported visual. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] VRML plugin
Hi all, Given that the VRML plugin is a bit of work to compile due to the dependence on a very old version of OpenVRML, I've built a binary packages of OpenVRML-0.14.3 for Win32 Visual Studio .NET 2003 and Visual Studio 2005, and Mac OS X 10.4 32-bit universal. The binaries are here for your pleasure: http://www.artoolworks.com/dist/openvrml/0.14.3/ I also note that previous discussion about why the VRML plugin couldn't be updated to a newer version of OpenVRML centred on the boost dependency. I'm sure that thats much less of an issue now that we have boost binaries for most Linux distros, plus Windows and Mac. http://www.boostpro.com/download http://pdb.finkproject.org/pdb/browse.php?summary=boost Of course, the bigger issue with the VRML plugin is that it doesn't support any sort of animation. OpenVRML 0.14.3 supports animation including animated textures. Does anyone here have a good knowledge of the VRML, good enough to add support for importing VRML animations from OpenVRML nodes? Regards, Philip Lamb ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Animated textures
Hi all, I have a request from a user for support for animated textures in an OSG model. They're doing their modelling in 3DS Max and exporting to OSG via the 3DS exported plugin, to native .osg format. 1) Is it straightforward to use animated textures in OSG (for example in VRML, one can specify an mpeg file as a texture and animation just works)? 2) If yes, is there a straightforward workflow from modelling tools to OSG to include animated textures? Post-processing of exported files is also fine. Regards Philip Lamb ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Animation in COLLADA files supported?
Hi all, I have a question about which plugins support files that include animations. I have experimented with the COLLADA plugin, but it appears that as of OSG 2.8.1-RC3 and COLLADA DOM 1.4, animation in .dae files doesn't carry through to the scene graph. Does anyone have any suggestions as to whether animations in .dae files should be supported (and if I'm doing something wrong)? Can anyone else share their preferred workflow for getting animations out of modelling applications and into OSG? The artist I'm trying to support uses Cinema 4D. Our backup is exporting to VRML2 and doing a second rendering pass using libopenvrml-gl outside OSG. Thanks in advance, Phil Lamb. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
