Re: [osg-users] Viewport inheritance and RTT

Hi, Christiansen, Brad wrote: Hi, Just 'resubmitting' my issue with a more simple question to see if anyone has any ideas. What are the rules with viewport inheritance? - My understanding is: If a camera has a viewport set, this is used when rendering the cameras sub-graph. If it is not

Re: [osg-users] [vpb] Geocentric Database, how to flattening area or cut out piece

zonk wrote: Hi, Is it possible to flatten the geocentric database at specific coordiantes, or cut out speciffic areas, so the gap can be refilled with a completely flat area? Maybe you could also directly alter your input data with the GDAL rasterizer tool :

Re: [osg-users] Zoom effect

Hi, I use the setProjectionMatrixAsPerspective that performs what I need but the only problem is when I zoom out too much, my model streches until zoom in to the previous fovy values. How could I fix this? Thank you! Cheers, Gene -- Read this topic online here:

Re: [osg-users] 3d file formats supporting bump map

Hi David, and thanks for the great explanation! It has been very helpful I will try to modify or instruct the import plugins of the file formats I need forcing the association between the maps and the texture unit meaning then. Thanks again, Davide -- Forwarded message --

Re: [osg-users] FFmpeg and sound

Hi Serge, Robert is right, SDL only provides a very low-level sound API. If you have several sounds, you need to write your own software mixer. SDL advantage is that it's very easy to use. Because it's so low level, it does not have obscure side effects, which is what you want when you develop

Re: [osg-users] 360 degree screen captures

Hi Darin, You can easily create 360 degree image captures in your app by just creating a series of slave cameras that each take around a 90 degree portion of the view, the viewports for the cameras can be side by side so you don't see the seem. Alternatively you can render the slave cameras to a

Re: [osg-users] User defined Manipulator in a thread

Hi, I found the problem it is not because of the code. I embed my viewer in a windows form and the form has buttons so when I press arrow keys thse buttos are being selected when I remove these buttons manipulator gets the keys but I need these buttons in the form. Thank you! Cheers, Tufan

Re: [osg-users] RTT slave views and multi-threading

Hi Robert, Wojciech my initial guess was that the lengthy draw dispatch of the master view and failing cull draw parallelism was the result of the same problem. However, they actually seem to be different problems and I'll focus first on the draw dispatch. The master camera draws only a screen

Re: [osg-users] RTT slave views and multi-threading

Hi Tugkan, Tugkan Calapoglu wrote: Hi Robert, Wojciech my initial guess was that the lengthy draw dispatch of the master view and failing cull draw parallelism was the result of the same problem. However, they actually seem to be different problems and I'll focus first on the draw dispatch.

Re: [osg-users] RTT slave views and multi-threading

hi Jp, unfortunately that method is easy but very slow. I think it also uses glGetTexImage. cheers, tugkan Hi Tugkan, Tugkan Calapoglu wrote: Hi Robert, Wojciech my initial guess was that the lengthy draw dispatch of the master view and failing cull draw parallelism was the result of

Re: [osg-users] RTT slave views and multi-threading

Hi Tugkan, On Thu, Jan 14, 2010 at 12:00 PM, Tugkan Calapoglu tug...@vires.com wrote: unfortunately that method is easy but very slow. I think it also uses glGetTexImage. An operation like glReadPixels and glGetTexImage involves the fifo being flushed and the data copied back into main memory.

Re: [osg-users] RTT slave views and multi-threading

Hi, Tugkan Calapoglu wrote: hi Jp, unfortunately that method is easy but very slow. I think it also uses glGetTexImage. You might be surprised. Have you read the threads I linked to? Attach uses glReadPixels (while doing the FBO rendering, so you don't have to bind anything yourself later)

Re: [osg-users] RTT slave views and multi-threading

Hi Robert, I am working on an HDR implementation which should work on multiple channels. The method I use requires average luminance of the scene. If I use different average luminances for different channels the colors will simply not match. E.g. in a tunnel front channel will see the tunnel

Re: [osg-users] RTT slave views and multi-threading

Hi Tugkan, On Thu, Jan 14, 2010 at 12:31 PM, Tugkan Calapoglu tug...@vires.com wrote: I know that getting data back from GPU is slow but 12ms for a 4x4 texture seems extreme. It's the flushing of the fifo that is the problem, that's why it's so slow, not the data transfer itself. Once you

Re: [osg-users] RTT slave views and multi-threading

Hi Jp, my initial implementation used osg:Image attached to a camera and it was just as slow. I will see what I can do with PBO's. regards, tugkan Hi, Tugkan Calapoglu wrote: hi Jp, unfortunately that method is easy but very slow. I think it also uses glGetTexImage. You might be

Re: [osg-users] RTT slave views and multi-threading

Hi Robert, yes one frame latency is OK. Is there an example about the PBO usage? osgscreencapture seems to be about getting the data from frame buffer not from an RTT texture. tugkan Hi Tugkan, On Thu, Jan 14, 2010 at 12:31 PM, Tugkan Calapoglu tug...@vires.com wrote: I know that getting

Re: [osg-users] RTT slave views and multi-threading

Hi, Tugkan Calapoglu wrote: Hi Jp, my initial implementation used osg:Image attached to a camera and it was just as slow. OK. I will see what I can do with PBO's. There is some code in the threads I linked to earlier that shows how to get data into a PBO using osg's

Re: [osg-users] RTT slave views and multi-threading

Hi Tugkan, On Thu, Jan 14, 2010 at 12:51 PM, Tugkan Calapoglu tug...@vires.com wrote: yes one frame latency is OK. Is there an example about the PBO usage? osgscreencapture seems to be about getting the data from frame buffer not from an RTT texture. osgscreencapture uses a frame latency when

Re: [osg-users] Faster build with precompiled headers (PCH)?

Interesting. I can't find it either if I search for that subject, but a search for precompiled headers does turn up a thread with that subject. I'm searching in the OSG-users Google Group. Paul Martz Skew Matrix Software LLC _http://www.skew-matrix.com_ http://www.skew-matrix.com/ +1 303 859

Re: [osg-users] osgOcean : GameDev have nice screenshot of ocean rendering.

Hi Adrian, Just FYI http://www.gamedev.net/community/forums/topic.asp?topic_id=558794 Yep, I saw the paper, here are a few more links: The paper itself: http://hal.archives-ouvertes.fr/inria-00443630 The author's page: http://evasion.inrialpes.fr/~Eric.Bruneton/ Looks great, something like

[osg-users] PagedLod and OpenGl Error : out of memory

. __ Information from ESET NOD32 Antivirus, version of virus signature database 4771 (20100114) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http

[osg-users] general questions from a newbie

Hi, So here is my predicament. I am not really a graphics guy at all. The most I have done is taken a 1 week OpenGL class 10 yrs ago. Haven't looked at it since. I have been reading and reading and am overloaded with information. On top of that there is a lot that I just don't understand

Re: [osg-users] [osgOcean] osgOcean bugs(?) and questions

This flickering black pixels seems to be related to back facing polygons and the water shader. Seems to related to the lookup into the environment map cube texture. Why does the osgOcean_EnvironmentMap cube texture get used for back facing polygons but not for the front facing? A comment in

[osg-users] osgDB::writeNodeFile() omits texture objects

I'm trying to dump the scene-graph. osgDB::writeNodeFile() writes geometry/colors ok, but (OSG 2.9.6) omits texture objects. Eg, when running osgviewer on the dumped .osg file, textures don't appear. Is this behavior of writeNodeFile() intentional?

Re: [osg-users] PagedLod and OpenGl Error : out of memory

Antivirus, version of virus signature database 4771 (20100114) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi

Re: [osg-users] osgDB::writeNodeFile() omits texture objects

HI Jim, Are loading the scene, rendering and then writing out the scene graph? If so then it's likely that your scene graph as the Texture UnrefImageAfterApply enabled on them so that once the image data is downloaded to OpenGL the images get discarded so there's no handle to write them out to

Re: [osg-users] Faster build with precompiled headers (PCH)?

Here is the original post you were referring to: http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2008-August/015868.html Erik den Dekker On 14-01-2010, at 14:50, Paul Martz wrote: Interesting. I can't find it either if I search for that subject, but a search for

Re: [osg-users] [vpb] Geocentric Database, how to flattening area or cut out piece

On 1/14/2010 1:43 AM, Luc Claustres wrote: Is it possible to flatten the geocentric database at specific coordiantes, or cut out speciffic areas, so the gap can be refilled with a completely flat area? Maybe you could also directly alter your input data with the GDAL rasterizer tool :

[osg-users] PagedLOD DatabasePager crash

Greetings, Here's my steps: I'm creating a compositeViewer with one or more views. I'm loading a paged database. While the database is paging, I delete the compositeViewer (thus taking the context down with it as well as the database pager). I then create a new compositeViewer and attempt to

Re: [osg-users] PagedLOD DatabasePager crash

Hi Colin, You make no mention of which version of the OSG you are using. The DatabasePager and manage of GL objects when destroying contexts has improved significantly over the past year so the problems you are seeing may well be already resolved. Robert. On Thu, Jan 14, 2010 at 5:00 PM, Colin

Re: [osg-users] [vpb] Geocentric Database, how to flattening area or cut out piece

Hi, is it possible to specifiy my polygon outline position and elevation, and GDAL rasterize code will interpolate correctly that this area is really flattend? or does it lift up/sink sown all coordinates inside the polygon to the specified value? How can I access the new API if now available

Re: [osg-users] [vpb] Geocentric Database, how to flattening area or cut out piece

On 1/14/2010 10:16 AM, Torben Dannhauer wrote: Hi, is it possible to specifiy my polygon outline position and elevation, and GDAL rasterize code will interpolate correctly that this area is really flattend? I'm not really sure what you're asking. or does it lift up/sink sown all

Re: [osg-users] PagedLOD DatabasePager crash

Robert, I'm using 2.8.2 and I verified the problem exists in the trunk. -Colin On 1/14/2010 12:13 PM, Robert Osfield wrote: Hi Colin, You make no mention of which version of the OSG you are using. The DatabasePager and manage of GL objects when destroying contexts has improved significantly

Re: [osg-users] PagedLod dataBasePager memory managment

my own readFileCallback is not sufficient and I'll need to modify PagedLod sources too ? Thanks. Regards, Vincent. __ Information from ESET NOD32 Antivirus, version of virus signature database 4771 (20100114) __ The message was checked by ESET NOD32 Antivirus. http

[osg-users] Adding DatabasePager to VRJuggler for PagedLOD Support

I am working on a VRJuggler project that uses OSG as its scenegraph. I need to use a PagedLOD for the terrain because of its size. I used Virtual Planet Builder to generate the PagedLOD and added that PagedLOD to the scenegraph as a node. The application shows only the lowest resolution model

Re: [osg-users] Adding DatabasePager to VRJuggler for PagedLOD Support

Levi Swartzentruber wrote: I am working on a VRJuggler project that uses OSG as its scenegraph. I need to use a PagedLOD for the terrain because of its size. I used Virtual Planet Builder to generate the PagedLOD and added that PagedLOD to the scenegraph as a node. The application shows

[osg-users] Disabling rendering

This might sound like an odd question, but is there a way to disable rendering (no culling and no draw) while still allowing intersections. The reason why I am asking is because I have a distributed system - i.e. some applications only performs intersections with the scene without rendering

Re: [osg-users] MinGW and OpenSceneGraph

Hi Jean-Sébastien Robert, thanks for the feedback! @Robert: I've actually written a tutorial that describes how to setup a c/c++ development environment which I'm using to compile OpenSceneGraph. It also includes the version numbers.

[osg-users] HUD - force refresh

Hi everyone, I'm new around here, but I'll try to think the questions through, at least for the first couple of days :) So, to the point: I have a scene with a small HUD, and in that HUD a text that is changing based on some keypresses. What I'm trying to do is, in the event handler, set an

Re: [osg-users] MinGW and OpenSceneGraph

Hi Laurence, @Jean-S (1) libjpeg That's strange, I don't know if mingw32 on ubuntu is using the same files as on windows. I'm currently not using the offical verison of MinGW (latest verison 5.1.6, http://sourceforge.net/projects/mingw/files/) because it is using a GCC compiler version

Re: [osg-users] Disabling rendering

Hi Guy, This might sound like an odd question, but is there a way to disable rendering (no culling and no draw) while still allowing intersections. The reason why I am asking is because I have a distributed system - i.e. some applications only performs intersections with the scene without

Re: [osg-users] Disabling rendering

Guy Volckaert wrote: This might sound like an odd question, but is there a way to disable rendering (no culling and no draw) while still allowing intersections. The reason why I am asking is because I have a distributed system - i.e. some applications only performs intersections with the

Re: [osg-users] [vpb] Geocentric Database, how to flattening area or cut out piece

Chris 'Xenon' Hanson wrote: It doesn't do any blending into the surrounding areas. That's the higher-level functionality that my library adds. Something simple I tested and which helps producing a smooth blend is to upsample the elevation, rasterize your polygon, then downsample back to

[osg-users] light lobes and shadow maps

Hi community, I have some shader that does some lighting in the scene. Now studying osgShadow and the techniques. I want to a shadow map technique to disable the lightening of the scene behind obstacles. I have some code done, but not working. I need some help, someone experienced with GLSL to

Re: [osg-users] Disabling rendering

Paul. Thanks for the advice. What I ended-up doing is overriding the void ViewerBase::frame(double simulationTime) function. Depending on the state of a rendering flag, I either call or don't call the renderingTraversals() function. Hopefully, that won't cause any other issues. Cheers, Guy

Re: [osg-users] [vpb] Geocentric Database, how to flattening area or cut out piece

On 1/14/2010 12:52 PM, Luc Claustres wrote: It doesn't do any blending into the surrounding areas. That's the higher-level functionality that my library adds. Something simple I tested and which helps producing a smooth blend is to upsample the elevation, rasterize your polygon, then

Re: [osg-users] general questions from a newbie

jterpstra wrote: 1) Is this type of integration even possible with QT? Yes, you can embed a OSG view into a Qt frame, dock window etc. There are two ways to do this shown in the osgViewerQt example. Adapterwindow is easiest, the oosgwidget needs a little fix on windows to stop a redrawing

Re: [osg-users] light lobes and shadow maps

Hi Nick, This is not really an answer to your question, but for my application I used an attenuation factor (proportional to the squared distance) to avoid light behind obstacles (obstacles are generally far from my lights in my application). Maybe you can use one too. By the way, could

Re: [osg-users] light lobes and shadow maps

Hi Nick, Post the troublesome code and elaborate a bit more about the problem. If its really a minute or two I am sure someone will be able to help. Wojtek Lewandowski From: Trajce Nikolov Sent: Thursday, January 14, 2010 8:58 PM To: OpenSceneGraph Users Subject: [osg-users] light lobes and

Re: [osg-users] general questions from a newbie

second post . -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22654#22654 ___ osg-users mailing list osg-users@lists.openscenegraph.org

Re: [osg-users] general questions from a newbie

I found some posts later this morning: http://forum.openscenegraph.org/viewtopic.php?t=3004 http://lists.openscenegraph.org/htdig.cgi/osg-submissions-openscenegraph.org/2009-June/004578.html (kinda dumb it won't let my post URLs until I have 2 posts arg) It seams pretty informative and more

Re: [osg-users] general questions from a newbie

Just a follow up question on this, does QT allow a multi-threaded embedded osgViewer or is it knocked down to single threaded like what happens to osgViewer embedded in GLUT? -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org

Re: [osg-users] Adding DatabasePager to VRJuggler for PagedLOD Support

Those comments were very helpful. I am able to get the VR Juggler application to display the PagedLOD properly but I still have one problem. I can only move a set distance around the terrain before the program seg faults. The line that causes the problem is

Re: [osg-users] Adding DatabasePager to VRJuggler for PagedLODSupport

Levi Swartzentruber wrote: Those comments were very helpful. I am able to get the VR Juggler application to display the PagedLOD properly but I still have one problem. I can only move a set distance around the terrain before the program seg faults. The line that causes the problem is

Re: [osg-users] Zoom effect

Hi Gene, On 14/01/10 8:11 PM, Gene Permel wrote: I use the setProjectionMatrixAsPerspective that performs what I need but the only problem is when I zoom out too much, my model streches until zoom in to the previous fovy values. How could I fix this? That is a common effect when you open

Re: [osg-users] Viewport inheritance and RTT

Hi, Thanks for your answer. In relation to your comment: I'm still not sure why you want to use a slave? I remember something you said about shadows, but don't understand why shadows should differ between slave/not slave. Pre-render should work fine with just an RTT camera placed

[osg-users] [build] How do I compile an OSG app, so that it can be run without the OSG installed?

Hi there. How do I compile an OSG app, so that it can be run, on another computer, without the OSG installed (dlls and libs)? I just want to be able to send my app, for instance, via email, so that someone may run or test it on another pc, even without having OSG installed on it. I remember

Re: [osg-users] [build] How do I compile an OSG app, so that it can be run without the OSG installed?

On 1/14/2010 6:03 PM, Agos Silva wrote: How do I compile an OSG app, so that it can be run, on another computer, without the OSG installed (dlls and libs)? Static linking. It's an option in CMake now, if I recall. I think there are some instructions on the OSG web site too, because plugins

[osg-users] Is PolytopeIntersector a good choice for multiple selection?

Hi, I've a scene with only a handful of Geodes (under 200). If I wanted to detect which objects were selected within a 2D rectangle on screen (think clicking, holding, dragging out a rectangle over the view) - would a PolytopeIntersector be a good choice? Code: osgUtil::PolytopeIntersector

Re: [osg-users] MinGW and OpenSceneGraph

Hi Laurence, While creating this tutorial I found some minor issues (In the tutorial I explain how to patch it): I have just sent the fixes I could come up with to osg-submissions. You can look at the message here: http://thread.gmane.org/gmane.comp.graphics.openscenegraph.cvs/6738 You

[osg-users] Starting out

We have an existing visual simulation that is based on Performer. We know have to add collision detection with landmasses and the sea bottom. I was thinking of using OpenSceneGraph to place the vehicles in the world and use Bullet to do the actual collision detections. At this stage I don't need

Re: [osg-users] Viewport inheritance and RTT

Hi, For the record, I have found a workaround for the issue. To fix the problem, I did the following the RTT Camera: ss = rttCamera-getOrCreateStateSet(); osg::Viewport* vp = new osg::Viewport(0,0,textureSize,textureSize); ss-setAttributeAndModes(vp, osg::StateAttribute::OVERRIDE