Re: [osg-users] Depth test and RenderBin details
Hi guys, First of all, thank you for the answers. Unfortunately, I couldn't solve my problem. I already tried the first solution that consisted in giving different render bin to the axis and the sphere, but then I either have the sphere always on top of the axis, or the axis always on top of the sphere. This image illustrates my problem : [Image: http://img15.hostingpics.net/pics/490598Sanstitre4.png ] (http://www.hostingpics.net/viewer.php?id=490598Sanstitre4.png) The image 1 illustrates what i have when the sphere has a lower render bin than the axis. The images 2 and 3 illustrates the opposite. The image 4 illustrates a shading problem that I have in both situation. So what I want is a mix between the image 2 and 5. This is basically what I have when I don't deactivate the depth test and don't use render bin details. But then, if I have anything (like a plane for example) between my dragger and the camera, I won't see it anymore. Thank you so much for helping me. Cheers, Bob -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48156#48156 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] R: Depth test and RenderBin details
What I would do in standard OpenGL is this: 1) Draw your whole model first (with depth test enabled); 2) Clean the depth buffer only (glClear(GL_DEPTH_BUFFER_BIT);); 3) Draw the dragger (with depth test enabled). In this way the dragger would always appear on top of the model, no matter its position in the world. How can you achieve this in a scene graph using OSG? 1) I would set the rendering bin for the whole model to the lowest value, to force it to be drawn first. Keeping depth test enabled during drawing. 2) I would define a CleanDrawable, derived from osg::drawable, whose drawImplementation is just a glClear(GL_DEPTH_BUFFER_BIT). And assign the rendering bin for such drawable to a value greater than the one assign to the whole model. Then, I would attach a geode containing such drawable somewhere in your scenegraph. 3) I would set for the dragger a rendering bin even greater than that assigned to the CleanDrawable. Keeping the depth test enabled in this case also. I did do it in my application and it seems to work. But I don't know if there is a better and more elegant solution. Just my 2 cents. -Messaggio originale- Da: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] Per conto di Bob Slobodan Inviato: lunedì 11 giugno 2012 10:15 A: osg-users@lists.openscenegraph.org Oggetto: Re: [osg-users] Depth test and RenderBin details Hi guys, First of all, thank you for the answers. Unfortunately, I couldn't solve my problem. I already tried the first solution that consisted in giving different render bin to the axis and the sphere, but then I either have the sphere always on top of the axis, or the axis always on top of the sphere. This image illustrates my problem : [Image: http://img15.hostingpics.net/pics/490598Sanstitre4.png ] (http://www.hostingpics.net/viewer.php?id=490598Sanstitre4.png) The image 1 illustrates what i have when the sphere has a lower render bin than the axis. The images 2 and 3 illustrates the opposite. The image 4 illustrates a shading problem that I have in both situation. So what I want is a mix between the image 2 and 5. This is basically what I have when I don't deactivate the depth test and don't use render bin details. But then, if I have anything (like a plane for example) between my dragger and the camera, I won't see it anymore. Thank you so much for helping me. Cheers, Bob -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48156#48156 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Help! Particles in OSG 3.0.1 flip halfway through their lifetime...
Hi Nick, I've just tried your test model and see the problem but as yet don't know the cause. I experimented with changing various parameters and consistently it looked like the textures flipped halfway through their lifetime. I have had a bash at looking at the revision logs for Particle.cpp and ParticleSystem.cpp to see if there is any change that looks like it might be repossible but the old server isn't responding right now so can't check. Robert. On 8 June 2012 16:06, Nick Jones suvlak...@yahoo.com wrote: Hi, My project has recently upgraded to OSG 3.0.1. We have a set of particle systems that we have been using for a while. After upgrading to OSG 3.0.1 from OSG 2.8.1, however, I noticed something strange with the way the particles are being updated. It seems that halfway through the particles' lifetimes, they flip vertically. In example, I created a simple particle with an image of an arrow pointing up. When I run this particle in OSG 2.8.1, the arrow remains pointing up throughout the end of its lifetime. When I run it in OSG 3.0.1, the arrow starts off pointing up but then suddenly points down at about the halfway mark in its lifetime. It remains pointing down until the particle is extinguished. Attached in the .zip file is the .osgx of the particle system. If you run it in OSG 3.0.1, you'll notice the flipping. If you convert it to an .osg file and run it in OSG 2.8.1, you'll notice that it does not flip. Has anyone run into this issue before? System Information: OSG 3.0.1, Ubuntu 10.04 Thank you! Nick -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48141#48141 ___ 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] R: Depth test and RenderBin details
On Mon, Jun 11, 2012 at 12:31 PM, Gianluca Natale nat...@europe.altair.com wrote: What I would do in standard OpenGL is this: 1) Draw your whole model first (with depth test enabled); 2) Clean the depth buffer only (glClear(GL_DEPTH_BUFFER_BIT);); 3) Draw the dragger (with depth test enabled). In this way the dragger would always appear on top of the model, no matter its position in the world. Yes How can you achieve this in a scene graph using OSG? 1) I would set the rendering bin for the whole model to the lowest value, to force it to be drawn first. Keeping depth test enabled during drawing. ... A less intrusive way to do this is with slave cameras. The main scene is drawn in a slave. Another slave camera draws your dragger by having it as its child. Its clear mask is set to GL_DEPTH_BUFFER_BIT. Tim 2) I would define a CleanDrawable, derived from osg::drawable, whose drawImplementation is just a glClear(GL_DEPTH_BUFFER_BIT). And assign the rendering bin for such drawable to a value greater than the one assign to the whole model. Then, I would attach a geode containing such drawable somewhere in your scenegraph. 3) I would set for the dragger a rendering bin even greater than that assigned to the CleanDrawable. Keeping the depth test enabled in this case also. I did do it in my application and it seems to work. But I don't know if there is a better and more elegant solution. Just my 2 cents. -Messaggio originale- Da: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] Per conto di Bob Slobodan Inviato: lunedì 11 giugno 2012 10:15 A: osg-users@lists.openscenegraph.org Oggetto: Re: [osg-users] Depth test and RenderBin details Hi guys, First of all, thank you for the answers. Unfortunately, I couldn't solve my problem. I already tried the first solution that consisted in giving different render bin to the axis and the sphere, but then I either have the sphere always on top of the axis, or the axis always on top of the sphere. This image illustrates my problem : [Image: http://img15.hostingpics.net/pics/490598Sanstitre4.png ] (http://www.hostingpics.net/viewer.php?id=490598Sanstitre4.png) The image 1 illustrates what i have when the sphere has a lower render bin than the axis. The images 2 and 3 illustrates the opposite. The image 4 illustrates a shading problem that I have in both situation. So what I want is a mix between the image 2 and 5. This is basically what I have when I don't deactivate the depth test and don't use render bin details. But then, if I have anything (like a plane for example) between my dragger and the camera, I won't see it anymore. Thank you so much for helping me. Cheers, Bob -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48156#48156 ___ 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] Set Viewport background color as transparent
Hi Vishwa, On 10 June 2012 14:55, shekhar vishwa vishwa.shek...@gmail.com wrote: I have implemented above code in my program, but it doesnot make the background transparent. I want to see the underlying views being the viewport. We've provide a *lot* of support and guidance to try and help you out, there really isn't anything else much we can add. You aren't clear about what you are trying to do, and why the suggestions don't work. Repeating the same questions in the same information poor way isn't going to help anyone help you. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Display the multi lingual text
Hi Vishma, First thing to check: Is the c++ file which contains this line of code: osgText::String* string = newosgText::String(గౌతమి, osgText::String::ENCODING_UTF8); ...utf-8 encoded? It has to be since the text is hard-coded in the source. Second thing to check: does the actual font that you are using include the characters in the text? And does the font support uft-8? Use a font viewing application to find out. Best regards, John On 06/10/2012 02:50 PM, shekhar vishwa wrote: Hi I want to display the multi lingual text. I have implemented following code. osg::ref_ptrosgText::Text text = newosgText::Text; osgText::String* string = newosgText::String(గౌతమి, osgText::String::ENCODING_UTF8); std::string test = string-createUTF8EncodedString(); text-setFont(fonts/gautami.ttf); text-setCharacterSize(20); text-setPosition(pos); text-setAxisAlignment(osgText::Text::XY_PLANE); text-setText(test); But text is displays as ??? in osg view. Please help me to display the multi lingual font text. Thanks Vishwa -- This email was Anti Virus checked by Astaro Security Gateway. http://www.astaro.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Keyboard Event handler Problem
Hi,
I want to get events from the keyboard. To do this I created a class by
deriving osgGA::GUIEventHandler and implemented hanlder method.
But my program is not catching the events. Here is my code
Code:
class KeyboardEventHandler : public osgGA::GUIEventHandler
{
bool isImageCaptured;
public:
KeyboardEventHandler(): osgGA::GUIEventHandler()
{
isImageCaptured=false;
}
virtual bool handle(const osgGA::GUIEventAdapter
ea,osgGA::GUIActionAdapter);
bool getImageCapFlag()
{
return isImageCaptured;
}
};
bool KeyboardEventHandler::handle(const osgGA::GUIEventAdapter
ea,osgGA::GUIActionAdapter aa)
{
std::coutIn Event Handlerstd::endl;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::KEYDOWN):
{
std::coutEvent handerler std::endl;
switch(ea.getKey())
{
case 'i':
std::cout I Pressed std::endl;
isImageCaptured=false;
return false;
break;
default:
return false;
}
}
default:
return false;
}
}
In the above code I am getting In Event Handler message but not getting I
Pressed.
I also implemented the following code to take a screen capture. If I remove
this code than key board events are working
Code:
HMONITOR monitor = MonitorFromWindow(hWnd, MONITOR_DEFAULTTONEAREST);
MONITORINFO info;
info.cbSize = sizeof(MONITORINFO);
GetMonitorInfo(monitor, info);
int XRes = info.rcMonitor.right - info.rcMonitor.left;
int YRes = info.rcMonitor.bottom - info.rcMonitor.top;
traits = new osg::GraphicsContext::Traits;
traits-target = osg::Camera::FRAME_BUFFER_OBJECT;
traits-x =0;
traits-y =0;
traits-width = XRes;
traits-height = YRes;
traits-windowDecoration = true;
traits-doubleBuffer = true;
traits-sharedContext = 0;
traits-pbuffer = false;
gContext= osg::GraphicsContext::createGraphicsContext(traits.get());
viewer-getCamera()-setGraphicsContext(gContext);
gCamera = viewer-getCamera();
gCamera-setViewport(new osg::Viewport(0,0,XRes,YRes));
double fovy, aspectRatio, zNear, zFar;
gCamera-getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear,
zFar);
fovy+=41.0;
gCamera-setProjectionMatrixAsPerspective(fovy, aspectRatio, zNear,
zFar);
viewer-setDataVariance(osg::Object::DYNAMIC);
viewer-setThreadingModel(osgViewer::Viewer::SingleThreaded);
sCapImage = new osg::Image;
sCapImage-allocateImage(720, 576, 1, GL_RGB, GL_UNSIGNED_BYTE);
gCamera-attach(osg::Camera::COLOR_BUFFER, sCapImage);
I added setAllowEventFocus(false) for both gCamera and main camera. Even I am
not getting key board events
Can you please help me where am I doing wrong?
...
Thank you!
Cheers,
Koduri
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[osg-users] How to draw a tube connecting two geometries
Hi, I am creating a scene in which there will be two geometries connected by a tube. The geometries can move around in between frames, so the tube must also move and resize. The way I am trying to do this is to have a geometry for a tube of unit length and diameter. Then, if the position of either endpoint changes, I recalculate the midpoint and use a translation matrix to move the tube there, and give it the correct scaling and rotation to connect the two endpoint geometries. The graph would look something like this: Root /| \ Matrix MatrixMatrix \/\ Geode Geode (Tube Geometry) (Endpoint Geometry) Is this the most efficient way to do this? Is there some way I could tie in to the two MatrixTransforms for the endpoints to automatically update the tube's location? ... Thank you! Cheers, Michael -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48165#48165 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Help! Particles in OSG 3.0.1 flip halfway through their lifetime...
Robert, Thank you for your quick reply. It may also be worth noting that if the particle system is created at run time, it seems to work correctly. However, when the particle system is saved to a file and then read back in is when the problem begins to show. I am in the process of creating a quick test case to show this. If I get it done in time before you find the issue, I'll post it on this thread. Thank You, Nick -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48167#48167 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Help! Particles in OSG 3.0.1 flip halfway through their lifetime...
I did encounter this, and I did track it down. The quick fix is that you probably have a line in your particle system .osg file that looks like this: textureTile 1 1 1 To fix the problem, you need to change it to this: textureTile 0 0 0 Slightly longer explanation: OSG is interpreting the file slightly differently than it did in 2.8. The textureTile parameter controls changing the texture over the life if the particle, and in OSG 2.8 the particle generator only lists textureTile 1 1 1 it was interpreted as a single texture for the life of the particle. In osg 3.0 it is interpreted as the *second* tile (tile index 1), the first being tile index 0. Since no tile 0 is actually specified, OSG creates a default tile 0. What is happening is that partway through the life of the particle, it switches from tile 0 to tile 1. Through some mechanism I don't now recall, this causes a transform to be applied to the texture coordinates, which is why the particle texture gets flipped. Hope this helps, - Pete On 6/8/2012 11:06 AM, Nick Jones wrote: Hi, My project has recently upgraded to OSG 3.0.1. We have a set of particle systems that we have been using for a while. After upgrading to OSG 3.0.1 from OSG 2.8.1, however, I noticed something strange with the way the particles are being updated. It seems that halfway through the particles' lifetimes, they flip vertically. In example, I created a simple particle with an image of an arrow pointing up. When I run this particle in OSG 2.8.1, the arrow remains pointing up throughout the end of its lifetime. When I run it in OSG 3.0.1, the arrow starts off pointing up but then suddenly points down at about the halfway mark in its lifetime. It remains pointing down until the particle is extinguished. Attached in the .zip file is the .osgx of the particle system. If you run it in OSG 3.0.1, you'll notice the flipping. If you convert it to an .osg file and run it in OSG 2.8.1, you'll notice that it does not flip. Has anyone run into this issue before? System Information: OSG 3.0.1, Ubuntu 10.04 Thank you! Nick -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48141#48141 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Peter Amstutz Senior Software Engineer Technology Solutions Experts Natick, MA 02131 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] server is down !
Hi . I m trying to access the OSG website and download by svn the new version but looks like the that the site is down . Do you know how long to back on line ? -- ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Reset my account
Hay! I tried to change my e-mail address and got locked out! Is there any way to fix that? - Evil Beware! We have Waffles! D Glenn smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Render to texture, display pre-rendered scene
This really sounds helpful, Robert, but for some reason this examples you recommended aren't understandable for me. They all tells about reflecting, printing it into a flag and so on. isn't there an example which just renders a single node, a single box or something else into a texture and projects it into the viewer? Just a single object, no camera effects, no artefacts, no movements, nothing but a single object. My problem is that all this examples (and I found a lot in the internet) explains how useful this RTT technique is, but aren't understandable after all. This sounds like I'm not good in graphics programming, but sometimes small steps are necessary. I can't take this big stuffs as start. lg Christian -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48171#48171 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] server is down !
Hi all, We are experiencing problems with the old server, it seems there is a problem with the university network, nothing related to the trac. Now I can't reach the server using ssh, so till tomorrow I won't be able to take a look. In the meanwhile you can use the github[1] or mercurial[2] mirror to get the code. Sorry for the inconvenience. [1] http://www.openscenegraph.com/index.php/downloads/code-repositories/31-git-mirror [2] http://www.openscenegraph.com/index.php/downloads/code-repositories/32-mercurial-mirror 2012/6/11 Carlos Sanches ces...@gmail.com Hi . I m trying to access the OSG website and download by svn the new version but looks like the that the site is down . Do you know how long to back on line ? -- ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Jordi Torres Fabra gvSIG 3D blog http://gvsig3d.blogspot.com Instituto de Automática e Informática Industrial http://www.ai2.upv.es ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Reset my account
On 11 June 2012 16:30, Glenn, David E CTR NAVAIR, 535100D david.e.glenn@navy.mil wrote: Hay! I tried to change my e-mail address and got locked out! Is there any way to fix that? Could you be a bit more specific about what email address, what you got locked out from, what do you mean you got locked out... Is it simply that you've forgotten your password for something? Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Render to texture, display pre-rendered scene
Hi Christian, I'm afraid I do have time to walk you through the baby steps of this type of problem. The OSG has lots of examples, there are several books, lots of resources you can call upon to learn about the OSG. Robert. On 11 June 2012 16:26, Christian Rumpf ru...@student.tugraz.at wrote: This really sounds helpful, Robert, but for some reason this examples you recommended aren't understandable for me. They all tells about reflecting, printing it into a flag and so on. isn't there an example which just renders a single node, a single box or something else into a texture and projects it into the viewer? Just a single object, no camera effects, no artefacts, no movements, nothing but a single object. My problem is that all this examples (and I found a lot in the internet) explains how useful this RTT technique is, but aren't understandable after all. This sounds like I'm not good in graphics programming, but sometimes small steps are necessary. I can't take this big stuffs as start. lg Christian -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48171#48171 ___ 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] How to draw a tube connecting two geometries
I am creating a scene in which there will be two geometries connected by a tube. The geometries can move around in between frames, so the tube must also move and resize. The way I am trying to do this is to have a geometry for a tube of unit length and diameter. Then, if the position of either endpoint changes, I recalculate the midpoint and use a translation matrix to move the tube there, and give it the correct scaling and rotation to connect the two endpoint geometries. Is this the most efficient way to do this? Without using a vertex shader, this is probably the best way to do it. Is there some way I could tie in to the two MatrixTransforms for the endpoints to automatically update the tube's location? No. Geometries that meet each other can only be under a common transform. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Render to texture, display pre-rendered scene
No need anymore, Robert. I finally a homepage which explains everything about render to texture: http://beefdev.blogspot.de/2012/01/render-to-texture-in-openscenegraph.html It really helped me, and I finally could load my shader files with texture as uniform sampler2D. Nevertheless thank you very much, Robert. lg Christian -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48176#48176 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Monitoring time elapsed
Hi,
I'd like to know what would be the difference between:
viewer.getViewerFrameStamp()-getReferenceTime();
and
osg::Timer::instance()-delta_m(startTick,endTick)
in the following codes:
Code:
int main( int argc, char** argv )
{
/* Add models to the scene */
osg::ref_ptrosg::Node model = osgDB::readNodeFile( cessna.osg );
if(model == NULL)
{
osg::notify( osg::FATAL ) Unable to load data file.
Exiting. std::endl;
return 1;
}
/* create the scene graph */
osg::ref_ptrosg::Group root = new osg::Group;
root-addChild( model.get() );
/* view the scene */
osgViewer::Viewer viewer;
/* set scene data */
viewer.setSceneData( root.get() );
// take start time
osg::Timer_t startTick = osg::Timer::instance()-tick();
// Run the viewer
viewer.run();
// take the end of time after viewing
osg::Timer_t endTick = osg::Timer::instance()-tick();
// time elapsed since osgviewer started running and the model is
displayed on the screen
double t = viewer.getFrameStamp()-getReferenceTime();
//display elapsed times
cout With osg::Timer_t, completed in
osg::Timer::instance()-delta_m(startTick,endTick) milliseconds endl;
cout With viewer.getFrameStamp()-getReferenceTime = t*1000
milliseconds endl;
}
I got very different values, e.g.:
With osg::Timer_t = 2036.44 ms
With viewer.getFrameStamp() = 1887.5 ms
Thank you very much,
Maia
robertosfield wrote:
Hi Utkarsh,
viewer.getViewerFrameStamp()-getReferenceTime();
Robert.
On 2 May 2012 17:27, Utkarsh Patankar wrote:
Hi,
In an OSG application, is there any way to find out how much time has
elapsed since osgviewer started running? I don't want to use any external
time based functions.
Thank you!
Cheers,
Utkarsh
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[osg-users] Visible vertex count visitor on a subgraph
Hi there! We want to develop a visitor to count all visible vertices given a subgraph. Our first approach has been the VertexCounter that can be found in osgocclusionquery.cpp. The problem with this approach is that we get all vertices, but not only the visible ones. What we want to achieve is something like the StatsHandler does for us, but only for a subgraph. Any ideas? Thank you! Cheers, Roberto -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48178#48178 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Post-render Camera reusing the Depth Buffer
Hello, I have the following setup. The main camera renders the scene to frame-buffer. Attached in the subgraph below the main camera, there is a post-render camera which does its work after the main has completed and renders to texture. However, in this second camera I want to reuse the depth buffer from the main camera. I have something like: Code: osg::Camera* rt = new osg::Camera; rt-setRenderOrder(osg::Camera::POST_RENDER, 0); rt-setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT); rt-attach(osg::Camera::COLOR_BUFFER, tex); rt-setClearMask(0); This doesn't seem to work well, when ClearMask is 0; there are weird artifacts in rendering. It works fine when depth is cleared, though this is not what I am after. I am guessing that I should explicitly attach the depth buffer (that was previously used by main camera), but I am not really sure how to do that. If anyone has experience with this or ideas where to look, I'd very much appreciate it. Thanks. Cheers, Marko[/code] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48179#48179 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Post-render Camera reusing the Depth Buffer
Hello Marko, In my deferred rendering setup I had the same problem. Just bind the depth buffer in the second pass as input. Just be sure not to write to the depth buffer (if you don't want to) by disabling depth writes for the pass. I'm bit busy right now, so just ask me again if the problem persists. snip rt-attach(osg::Camera::DEPTH_BUFFER, depth_tex); /snip cheers psy Hello, I have the following setup. The main camera renders the scene to frame-buffer. Attached in the subgraph below the main camera, there is a post-render camera which does its work after the main has completed and renders to texture. However, in this second camera I want to reuse the depth buffer from the main camera. I have something like: Code: osg::Camera* rt = new osg::Camera; rt-setRenderOrder(osg::Camera::POST_RENDER, 0); rt-setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT); rt-attach(osg::Camera::COLOR_BUFFER, tex); rt-setClearMask(0); This doesn't seem to work well, when ClearMask is 0; there are weird artifacts in rendering. It works fine when depth is cleared, though this is not what I am after. I am guessing that I should explicitly attach the depth buffer (that was previously used by main camera), but I am not really sure how to do that. If anyone has experience with this or ideas where to look, I'd very much appreciate it. Thanks. Cheers, Marko[/code] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48179#48179 ___ 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] Monitoring time elapsed
Hi Maia,
The FrameStamo::getReferenceTime() is the reference time for the
current frame, it's updated during the viewer.advance() and isn't
updated till the next advance(). advance() is called as the first
part of the viewer.frame().
Robert.
On 11 June 2012 19:12, Maia Randria
veneree.randrianari...@crulrg.ulaval.ca wrote:
Hi,
I'd like to know what would be the difference between:
viewer.getViewerFrameStamp()-getReferenceTime();
and
osg::Timer::instance()-delta_m(startTick,endTick)
in the following codes:
Code:
int main( int argc, char** argv )
{
/* Add models to the scene */
osg::ref_ptrosg::Node model = osgDB::readNodeFile( cessna.osg );
if(model == NULL)
{
osg::notify( osg::FATAL ) Unable to load data file.
Exiting. std::endl;
return 1;
}
/* create the scene graph */
osg::ref_ptrosg::Group root = new osg::Group;
root-addChild( model.get() );
/* view the scene */
osgViewer::Viewer viewer;
/* set scene data */
viewer.setSceneData( root.get() );
// take start time
osg::Timer_t startTick = osg::Timer::instance()-tick();
// Run the viewer
viewer.run();
// take the end of time after viewing
osg::Timer_t endTick = osg::Timer::instance()-tick();
// time elapsed since osgviewer started running and the model is
displayed on the screen
double t = viewer.getFrameStamp()-getReferenceTime();
//display elapsed times
cout With osg::Timer_t, completed in
osg::Timer::instance()-delta_m(startTick,endTick) milliseconds
endl;
cout With viewer.getFrameStamp()-getReferenceTime = t*1000
milliseconds endl;
}
I got very different values, e.g.:
With osg::Timer_t = 2036.44 ms
With viewer.getFrameStamp() = 1887.5 ms
Thank you very much,
Maia
robertosfield wrote:
Hi Utkarsh,
viewer.getViewerFrameStamp()-getReferenceTime();
Robert.
On 2 May 2012 17:27, Utkarsh Patankar wrote:
Hi,
In an OSG application, is there any way to find out how much time has
elapsed since osgviewer started running? I don't want to use any external
time based functions.
Thank you!
Cheers,
Utkarsh
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Re: [osg-users] Monitoring time elapsed
OK, thank you very much.
Maia
robertosfield wrote:
Hi Maia,
The FrameStamo::getReferenceTime() is the reference time for the
current frame, it's updated during the viewer.advance() and isn't
updated till the next advance(). advance() is called as the first
part of the viewer.frame().
Robert.
On 11 June 2012 19:12, Maia Randria
wrote:
Hi,
I'd like to know what would be the difference between:
viewer.getViewerFrameStamp()-getReferenceTime();
and
osg::Timer::instance()-delta_m(startTick,endTick)
in the following codes:
Code:
int main( int argc, char** argv )
{
/* Add models to the scene */
osg::ref_ptrosg::Node model = osgDB::readNodeFile( cessna.osg );
if(model == NULL)
{
osg::notify( osg::FATAL ) Unable to load data file.
Exiting. std::endl;
return 1;
}
/* create the scene graph */
osg::ref_ptrosg::Group root = new osg::Group;
root-addChild( model.get() );
/* view the scene */
osgViewer::Viewer viewer;
/* set scene data */
viewer.setSceneData( root.get() );
// take start time
osg::Timer_t startTick = osg::Timer::instance()-tick();
// Run the viewer
viewer.run();
// take the end of time after viewing
osg::Timer_t endTick = osg::Timer::instance()-tick();
// time elapsed since osgviewer started running and the model is
displayed on the screen
double t = viewer.getFrameStamp()-getReferenceTime();
//display elapsed times
cout With osg::Timer_t, completed in
osg::Timer::instance()-delta_m(startTick,endTick) milliseconds
endl;
cout With viewer.getFrameStamp()-getReferenceTime =
t*1000 milliseconds endl;
}
I got very different values, e.g.:
With osg::Timer_t = 2036.44 ms
With viewer.getFrameStamp() = 1887.5 ms
Thank you very much,
Maia
robertosfield wrote:
Hi Utkarsh,
viewer.getViewerFrameStamp()-getReferenceTime();
Robert.
On 2 May 2012 17:27, Utkarsh Patankar wrote:
Hi,
In an OSG application, is there any way to find out how much time has
elapsed since osgviewer started running? I don't want to use any
external time based functions.
Thank you!
Cheers,
Utkarsh
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Re: [osg-users] Post-render Camera Reusing the Depth-buffer
Hello Sebastian, thanks for a quick reply. I wanted to do something like that, but I am missing the depth_tex part. The first camera doesn't render to texture, but to a classical frame buffer/depth_buffer. The second camera is then RTT, but it should be using the depth buffer from the first one. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48183#48183 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Reset my account
Well, it sent me an e-mail to fix it! Think I'm up and running agein! Sorry for the bother!! D Glenn David Glenn --- D Glenn 3D Computer Graphics amp; Media Systems. www.dglenn.com -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48184#48184 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Help! Particles in OSG 3.0.1 flip halfway through their lifetime...
Pete, That did it for me! It works once I changed the .osg file from 1 1 1 to 0 0 0. Thank you very much for your help. Thank You, Nick -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48185#48185 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
