Re: [osg-users] Video as background

Hi, On Windows and Mac you can have video with alpha thanks to the Quicktime plugin, try the PNG codec, it works great ! Cheers, On Mon, Jan 11, 2010 at 8:09 AM, Trajce Nikolov nikolov.tra...@gmail.comwrote: Make a shader Eduardo. DIscard the chroma key fragment and you will get that result

Re: [osg-users] PagedLod dataBasePager memory managment

Hi Vincent, On Fri, Jan 8, 2010 at 2:30 PM, Vincent Bourdier vincent.bourd...@gmail.com wrote: Is there a way to manage memory usage with the load of models ? In my case I have a lot of PagedLod to load, and my question is : is there a way to know is memory is sufficient for the next PageLod

Re: [osg-users] Conversion from 'GLsizeiptrARB' to 'const GLvoid *' of greater size

Hi J-S, I'm afraid I don't have any further ideas. I think we just have to return to the time/space machine that eradicates all Windows installs and replaces them with a less troublesome development platform ;-) Disabling the warning would not be idea as it could hide some genuine problems.

Re: [osg-users] resizing embedded windows...

Hi Shayne, I haven't personally tried doing exactly what you are doing, but try changing the GraphicsWindowEmbedded context's size, and also try enable it's clear as the graphics context by default leaves it's own clear disabled leaving it to the clear done during the rendering of the Camera's

Re: [osg-users] DrawCallback only once

Hi Dominc, The best way to do a single GL test at startup is to attach a custom osg::GraphicsOperation as a RealizeOperation to the viewer, and this gets called once the viewer's graphics contexts get realized. Have a look at the osgcatch, osgshaderterrrain and osgvolume examples to see examples

Re: [osg-users] Information on ffmpeg thread safety

Hi Garret, On Sat, Jan 9, 2010 at 3:27 PM, Garrett Potts po...@cfl.rr.com wrote: After researching and talking with some others there is a way to make ffmpeg thread safe but you need to add a call back via the lock register api found in libavcodec and compile ffmpeg with thread support

Re: [osg-users] shader composition

Hi Nick, On Sat, Jan 9, 2010 at 7:20 PM, Trajce Nikolov nikolov.tra...@gmail.com wrote: while ago you mentioned this is something upcoming. I am talking about composition of shaders in the osg core - something like the osg candidate virtual program. Any news about this? I haven't dived back

[osg-users] readPixels return blank image

hi all, I want to capture the screen ,what I have done is to add a eventhandler in which I add code like this osg::ref_ptrosg::Image image = new osg::Image; image-readPixels(0,0,m_iWidth,m_iHeight, GL_RGB,GL_UNSIGNED_BYTE); osgDB::writeImageFile(*image,D:\\abc.bmp); what I

Re: [osg-users] readPixels return blank image

2010/1/11 forest fores...@163.com: hi all, I want to capture the screen ,what I have done is to add a eventhandler in which I add code like this     osg::ref_ptrosg::Image image = new osg::Image;     image-readPixels(0,0,m_iWidth,m_iHeight, GL_RGB,GL_UNSIGNED_BYTE);    

Re: [osg-users] OSG and streamed video

Hi, Did you get this with vlc? Im streaming the video and im catching well with a vlc client. But osgmovie give me: Error: No ReaderWriter for file http://192.168.192.38:1234 Unable to read file http://192.168.192.38:1234 Any help? Thanks ... Thank you! Cheers, Eduardo

Re: [osg-users] Autotransform, compositeviewer and small feature culling problems

Hi J.P, The issue you are hitting up against is a limitation of osg::AutoTransform in that it only has a single set of state so when you have two or more views that require different stats you'll get issues with both views attempting to sets it's value. The only way to solve this would be to

Re: [osg-users] Video as background

HI Eduaro, The new ffmpeg supports video with alpha, I've successfully tested this with flv videos with alpha. Robert. On Sun, Jan 10, 2010 at 9:52 PM, Eduardo Pinheiro eduardo.pinheiro...@gmail.com wrote: Hi, Does anyone now how to had a video with alpha channel? like in the picture in

Re: [osg-users] readPixels return blank image

Hi Forest, You can only do OpenGL calls from a thread with a valid graphics context current, event handlers will not have a graphics context current unless you are running the OSG single threaded. Use a Camera post or final draw callback to capture the screen image. Robert. On Mon, Jan 11,

Re: [osg-users] OSG and streamed video

Hi Eduardo, Which video plugin are you attempting to use? Robert. On Mon, Jan 11, 2010 at 12:04 PM, Eduardo Pinheiro eduardo.pinheiro...@gmail.com wrote: Hi, Did you get this with vlc? Im streaming the video and im catching well with a vlc client. But osgmovie give me: Error: No

Re: [osg-users] OSG and streamed video

Hi, Im using Linux. I dont know if it gets the xine or the ffmpeg plugin. But its one of them. ... Thank you! Cheers, Eduardo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22373#22373 ___

Re: [osg-users] Autotransform, compositeviewer and small feature culling problems

Hi Robert, Robert Osfield wrote: Hi J.P, The issue you are hitting up against is a limitation of osg::AutoTransform in that it only has a single set of state so when you have two or more views that require different stats you'll get issues with both views attempting to sets it's value. The

Re: [osg-users] OSG and streamed video

Hi, Im trying now to export it has rtsp: #osgmovie rtsp://192.168.192.38:1234/test.dsp Warning: Could not find plugin to read objects from file rtsp://192.168.192.38:1234/test.dsp. Unable to read file rtsp://192.168.192.38:1234/test.dsp But reading from VLC client its ok. My plugins dir

Re: [osg-users] OSG and streamed video

Hi Eduardo, You'll be using the xine plugin right now, this is now being deprecated by the ffmpeg plugin that you'll find in 2.9.x and svn/trunk. You'll need to install the various ffmpeg developer headers and libs and then remove OpenSceneGraph/CMakeCache.txt and then re-run cmake to pick up on

Re: [osg-users] OSG and streamed video

Hi, Many thanks. I will test and revert. ... Thank you! Cheers, Eduardo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22378#22378 ___ osg-users mailing list osg-users@lists.openscenegraph.org

Re: [osg-users] CHROMA KEY

Hi Trajce, Its something like that :) Thanks for your tip. I will try that but if you could give me an example how to make that i will appreciate. ... Thank you! Cheers, Eduardo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22379#22379

Re: [osg-users] CHROMA KEY

give me a video with chroma key . send it to my email .. I will write some sample and sent it to you Nick http://www.linkedin.com/in/tnick Sent from Izmit, 41, Turkey On Mon, Jan 11, 2010 at 3:21 PM, Eduardo Pinheiro eduardo.pinheiro.pt@ gmail.com wrote: Hi Trajce, Its something like

[osg-users] depth buffer display

Hi community, what is the simplest way to display the depth buffer? Nick http://www.linkedin.com/in/tnick Sent from Izmit, 41, Turkey ___ osg-users mailing list osg-users@lists.openscenegraph.org

Re: [osg-users] OSG and streamed video

Hi, I already had tried this version before and now i remember why i've passed again to 2.8.2 . The camera its not stable. It appears then not, then appears then not... Anyway i've tested the command osgmovie -e ffmpeg simple.mpg with the 2.8.2 and it worked. But the streaming its still not

Re: [osg-users] CHROMA KEY

just out of curiosity. Do you have attached a real camera to the application? I have done something in the past with real cameras and wondering how you are connecting to the scene, if you can disclose Thanks Nick http://www.linkedin.com/in/tnick Sent from Izmit, 41, Turkey On Mon, Jan 11, 2010

[osg-users] KdTree problem

Hi all Once again, here is a discussion about LineSegmentIntersector and precision (float vs. double). Attached is a small program showing my problem. The geometry is a TRIANGLE_STRIP consisting of five vertices, all with the same rather high Z-value. If the intersection calculation uses

Re: [osg-users] DrawCallback only once

Hi Robert thanks a lot, at the moment it works fine the way I made it. But I will try this solution as soon as possible. Am 11.01.10 11:41, schrieb Robert Osfield: The best way to do a single GL test at startup is to attach a custom osg::GraphicsOperation as a RealizeOperation to the viewer,

Re: [osg-users] CHROMA KEY

Hi, Yes i have a real camera. But im trying to test it with a movie (not with the real camera). I've sended to your email (i think) the explanation. The mail is what is in your website (linkedin). Did you received it? ... Thank you! Cheers, Eduardo -- Read this topic

Re: [osg-users] CHROMA KEY

send it to this one nikolov.tra...@gmail.com Nick http://www.linkedin.com/in/tnick Sent from Izmit, 41, Turkey On Mon, Jan 11, 2010 at 4:26 PM, Eduardo Pinheiro eduardo.pinheiro.pt@ gmail.com wrote: Hi, Yes i have a real camera. But im trying to test it with a movie (not with the real

Re: [osg-users] Conversion from 'GLsizeiptrARB' to 'const GLvoid *' of greater size

Hi Robert, Disabling the warning would not be idea as it could hide some genuine problems. Perhaps just disable it for the files that are causing problems? So would you accept a change that pushes the warning disable state at the start of include/osg/State, disables that warning for the

[osg-users] Depth buffer for shadow mapping

Hi there I have the following RTT method: ref_ptrImage image = new Image; image-allocateImage(osgViewer-width(), osgViewer-height(), 1, GL_RGBA, GL_UNSIGNED_BYTE); // resets the size of the texture texture-setTextureSize(osgViewer-width(), osgViewer-height()); // sets

Re: [osg-users] osg::TextureCubeMap and HDR

Dear Peter, I think that some (older) graphics cards support floating point 2D textures, but not cube maps. I'm also aware that even if you do support floating point cube maps, many older cards can't do interpolation on them. Can you turn it to GL_NEAREST and see if that makes a difference?

Re: [osg-users] Conversion from 'GLsizeiptrARB' to 'const GLvoid *' of greater size

Hi JS, On Mon, Jan 11, 2010 at 2:41 PM, Jean-Sébastien Guay jean-sebastien.g...@cm-labs.com wrote: So would you accept a change that pushes the warning disable state at the start of include/osg/State, disables that warning for the file, and pops the warning disable state at the end of the

[osg-users] ffmpeg and information on how to make thread safe

Hello All: Just did a test on making the ffmpeg thread safe. You should not have to modify the plugin but here is a cut and past: extern C { int ffmpeg_lock_callback(void **mutex, enum AVLockOp op); } int ffmpeg_lock_callback(void **mutex, enum AVLockOp op) { static OpenThreads::Mutex

Re: [osg-users] ffmpeg and information on how to make thread safe

Hello ALl: Forgot one thing. You must add --enable-pthreads (for unix type builds and MACs) for your platform. I forget the windows one but do the --help and look at the thread enabler for your platform. Take care Garrett On Jan 11, 2010, at 12:44 PM, Garrett Potts wrote: Hello

Re: [osg-users] ffmpeg and information on how to make thread safe

HI Garret, Just did a test on making the ffmpeg thread safe.  You should not have to modify the plugin but here is a cut and past: .. To me this needs to be done at the application level.  doing this will automatically allow for thread safe access to parts of libavcodec that need it.  

Re: [osg-users] [build] Build problem

Hi, ... Thanks I decided to add a virtual box with a 32 bit Ubuntu OS and install it there Thank you! Cheers, Andy -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22407#22407 ___ osg-users

Re: [osg-users] ffmpeg and information on how to make thread safe

Hello Robert: You could wrap it up in there. Is there a singleton entry point to OSG plugins? If there is a singleton access point that is similar to something like a plugin init then you could actually put it in the plugins initialization code. Take care Garrett On Jan 11, 2010, at

Re: [osg-users] Depth buffer for shadow mapping

2010/1/11 Dominic Stalder dominic.stal...@bluewin.ch camera-attach(Camera::COLOR_BUFFER, image.get(), 0, 0); -- camera-attach(Camera::DEPTH_BUFFER, image.get(), 0, 0); Well you are trying to attach a depth texture to the color buffer, that's not going to work. Try

Re: [osg-users] Depth buffer for shadow mapping

Hi Dominic, AFAIK, the png plugin does not support writing depth image. Try the tiff plugin in svn/trunk ; a recent submission made it write depth images, and it works for me. Mourad On Mon, Jan 11, 2010 at 4:17 PM, Dominic Stalder dominic.stal...@bluewin.ch wrote: Hi there I have the

Re: [osg-users] Depth buffer for shadow mapping

Hi, I am trying to do the same. I noticed two methods of Texture2D. texShadowMap-setShadowComparison(true); texShadowMap-setShadowTextureMode(Texture2D::LUMINANCE); what are these doing? Also, what is to be done to display the depth texture on screen. Thanks Nick

[osg-users] MinGW and OpenSceneGraph

Hi all, unfortunately the OSG server seems to be down, so hopefully I'm posting this on the right mailing list... For my projects I'm using OpenSceneGraph with great pleasure. Recently I had to switch from Visual Studio (VS) to MinGW because of some incompatible libraries. Compiling

Re: [osg-users] Depth buffer for shadow mapping

Hi Simon I'm attaching to the depth buffer (look on the right -- camera-attach(Camera::DEPTH_BUFFER, image.get(), 0, 0); ;-) Thanks anyway. Dominic Am 11.01.10 22:15, schrieb Simon Hammett: 2010/1/11 Dominic Stalder dominic.stal...@bluewin.ch mailto:dominic.stal...@bluewin.ch

Re: [osg-users] resizing embedded windows...

Robert, Thanks for the advice. As a follow up question that may be obvious (forgive me), how do I enable the clear on the graphics context? I've poked around and I can't find where this is done. Per your suggestion, I tried my own brute force clear which appears to solve the problem but I would

Re: [osg-users] Depth buffer for shadow mapping

Hi Nick, ShadowComparison = true causes opengl to use result of TexFilter(depth_at_texel depth_map_coord_r) ShadowComparison = false causes opengl to use TexFilter( depth_at_texel ) value. To display depth texture on some hud its neccessary to turn ShadowComparison off. Its kinda tricky

Re: [osg-users] Depth buffer for shadow mapping

Its still not working with tiff. But I also have problems when I put it directly into the texture, it doesn't work too. Any ideas? Am 11.01.10 22:27, schrieb Mourad Boufarguine: Hi Dominic, AFAIK, the png plugin does not support writing depth image. Try the tiff plugin in svn/trunk ; a

Re: [osg-users] Rendering a depth texture quickly

knarf wrote: I've implemented a feature that is similar to shadow mapping in that I first have to render the scene from another point of view, and this rendering is depth-only. I'm not using it for shadows, but this first depth-only pass is conceptually the same. Hi Frank I

Re: [osg-users] MinGW and OpenSceneGraph

Hi Laurence, Thanks for your tutorial, it's always useful to document things so new users can get up and running as fast as possible. Thanks also for your explanations for changes to make. Perhaps some can be made to the baseline so MinGW users won't have to manually patch things... About

[osg-users] Dragger no longer sees click

Hi, I've modified a dragger node so that instead of drawing using GL_POLYGON, it uses GL_LINE_LOOP. When using polygon mode, I can click and drag the handle - and all is well. When using any kind of LINE (Strip/Loop etc) the clicks are ignored. Any idea why this might be? I added debug

[osg-users] Viewport inheritance and RTT

Hi, I have a scene setup with a texture attached to a camera which is setup for pre-rendering. In my scene I set the viewport for the RTT camera to the dimensions of the texture. Despite having done this, the viewport for the RTT camera is being inherited from the main scenes camera, i.e. if the

Re: [osg-users] Node::Description into ageneralized propertymechanism?

Hi Robert, On 5/01/10 9:26 PM, Robert Osfield wrote: I've done a quick read of you proposal and it sounds good. For convenience perhaps adding a getIntProperty(), getFloatProperty() etc. methods might be appropriate, or perhaps one could use the bool getProperty(const std::string, Property)

Re: [osg-users] Depth buffer for shadow mapping

Thanks Wojciech, what I am after is , I implemented a shader for light lobes and I want to use shadow map technique to avoid lightening behind obstacles. I might have more questions. If you have some hints, then please drop them Nick http://www.linkedin.com/in/tnick Sent from Ünalan, İstanbul,

[osg-users] Concerning texture subloading using Subloadcallback

Hello I'm trying to make a GPU texture loading strategy based on an osg::Image. I maintain update bounds in a derived MyImage class in a setData method and would like to use glTexSubImage in order to update local Image changes so I implement a coupled Subloadcallback in order to do that. But I