Re: [osg-users] FFmpeg and sound
Hi Jason, On Tue, Jan 19, 2010 at 8:43 PM, Jason Daly jd...@ist.ucf.edu wrote: If I were to implement an OpenAL AudioSink, I'd imagine you'd want it to be a plugin (so the OSG can still be compiled without OpenAL). How would you envision this plugin being tied in to the core? I started on an OpenAL plugin last week, but I hit a wall when trying to figure out how to do this. The ReaderWriter interface works great for file-based plugins, but the AudioSink seems like it's different enough that a new kind of interface is needed. Do you agree? If so, would this interface also live in osgDB? Would it be part of Registry, like ReaderWriter, DotOsgWrapper, etc.? Any other thoughts? I have been thinking about the potential of an osgAudio library that abstracts away from the implementation details of OpenAL and keeps the door open to multiple implementations, and then within this have some form of registration of the audio implementation, then the audio implementations would plugin in to this, or like osgViewer just be built into the osgAudio library. osgViewer and it's handling of GraphicsWindow implementation might be a reasonable model for this. An straight audio sink is rather more straight forward than this though... so perhaps one could just have a slimline AudioSystemInterface/Factory class a bit like osg::GraphicsContext::WindowingSystemInterface singleton and then have this be where you register your scheme for implementing the AudioSink. Then in the plugins that need an audio sink it can go to this singleton and grab and implementation. The plugin might also use osgDB to load a plugin to force the registration of a implementation of a AudioSystemInterface. Such an approach would be easier to graft on than writing a full blown osgAudio library. Robert. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] Problems using SSI Cluster Example
Hi, J.P. Delport, yes, on node 2 run osgviewer. I've run osgdem with strace on node 2 and segfault happens because some files don't exist ( these files are build_master.source and tasks files) on node 2. I test osgdem copying these files from node 1 to node 2 with scp, and it works, but I think this is a shoddy piece of work. Thank you! Cheers, Samuel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22918#22918 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] Problems using SSI Cluster Example
Hi Samuel, On Wed, Jan 20, 2010 at 9:09 AM, Samuel Jarque osgfo...@tevs.eu wrote: J.P. Delport, yes, on node 2 run osgviewer. I've run osgdem with strace on node 2 and segfault happens because some files don't exist ( these files are build_master.source and tasks files) on node 2. Missing files shouldn't cause osgdem to segfault. Could you get a strack trace of when it happens then we can start tracking down the bug. Emitting a useful warning and then exiting is what should be happening. I test osgdem copying these files from node 1 to node 2 with scp, and it works, You shouldn't need to copy files, but you should have the disks accessible from the slaves so they can read/write to them. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] Problems using SSI Cluster Example
Hi, Samuel Jarque wrote: Hi, J.P. Delport, yes, on node 2 run osgviewer. I've run osgdem with strace on node 2 and segfault happens because some files don't exist ( these files are build_master.source and tasks files) on node 2. I test osgdem copying these files from node 1 to node 2 with scp, and it works, but I think this is a shoddy piece of work. the example assumes that there is a shared directory visible from all nodes. Therefore, if node1 creates the build_master.source and tasks files they are automatically visible to node2. In the example glusterfs is used for this purpose. You could try nfs or something else. rgds jp Thank you! Cheers, Samuel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22918#22918 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Saving Screenshot
Hi, Does anybody have any clue? how to solve this problem? Thank you! Cheers, Danny -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22922#22922 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] FBX plugin issues...
I'm trying the FBX plugin but I'm experiencing a couple of problems: 1) the model is not correctly oriented (no matter if I export using Y-UP or Z-UP options within 3dsmax) 2) aniamtions don't start (I also tried to export using the 'bake animation' option) Are these features currently supported/implemented? By the way, I'm using the latest development release (2.9.6) and in particular the latest submission for the FBX plugin. I tried with models exported from 3dsmax 2010 (FBX file format FBX200900 - binary). Thank you. Kind regards. Alessandro ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Saving Screenshot
See osgscreencapture example or search for screencapturehandler. jp Danny Lesnik wrote: Hi, Does anybody have any clue? how to solve this problem? Thank you! Cheers, Danny -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22922#22922 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FBX plugin issues...
Another thing I also noted is related to transparency: I reduced the opacity value inside 3dsmax material editor, but the model is always 100% opaque. Is transparency currently supported? Regards. Alessandro On Wed, Jan 20, 2010 at 10:36 AM, alessandro terenzi a.tere...@gmail.comwrote: I'm trying the FBX plugin but I'm experiencing a couple of problems: 1) the model is not correctly oriented (no matter if I export using Y-UP or Z-UP options within 3dsmax) 2) aniamtions don't start (I also tried to export using the 'bake animation' option) Are these features currently supported/implemented? By the way, I'm using the latest development release (2.9.6) and in particular the latest submission for the FBX plugin. I tried with models exported from 3dsmax 2010 (FBX file format FBX200900 - binary). Thank you. Kind regards. Alessandro ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] Problems using SSI Cluster Example
Hi, Sorry, I wasn't understanding the example. Well, now I'm going to configure my system with nfs. When I finish to configure it I will write again. Thank you very much Robert and J.P. Delport Cheers, Samuel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22926#22926 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] clipping problem with displacement shader
Hello,
yesterday i wrote a glsl displacement shader:
uniform sampler2D displMap;
void main()
{
gl_TexCoord[0] = gl_MultiTexCoord0;
vec4 tex = texture2D(displMap, gl_TexCoord[0].st);
float displ = 0.3 * tex.r + 0.59 * tex.g + 0.11 * tex.b;
vec4 vertex = vec4(gl_Normal * displ * 5.0 , 0.0) + gl_Vertex;
gl_Position = gl_ModelViewProjectionMatrix * vertex;
}
Now my problem is the clipping. When I start the application and I turn
around the objekt the displaced vertices and faces disappear. It seems
to me that the vertices clipped in the front of the near plane.
Is the displacement of the vertices a problem relating to the clipping
planes?
Cheers
Martin
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Re: [osg-users] clipping problem with displacement shader
Hi Martin,
You'll need to set the bounding volume of the osg::Geometry to
encompass the displacement by using the Geometry::setInitialBound(..)
method.
Robert.
2010/1/20 Martin Großer grosser.mar...@gmx.de:
Hello,
yesterday i wrote a glsl displacement shader:
uniform sampler2D displMap;
void main()
{
gl_TexCoord[0] = gl_MultiTexCoord0;
vec4 tex = texture2D(displMap, gl_TexCoord[0].st);
float displ = 0.3 * tex.r + 0.59 * tex.g + 0.11 * tex.b;
vec4 vertex = vec4(gl_Normal * displ * 5.0 , 0.0) + gl_Vertex;
gl_Position = gl_ModelViewProjectionMatrix * vertex;
}
Now my problem is the clipping. When I start the application and I turn
around the objekt the displaced vertices and faces disappear. It seems to me
that the vertices clipped in the front of the near plane.
Is the displacement of the vertices a problem relating to the clipping
planes?
Cheers
Martin
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[osg-users] osg::StateAttribute::PROTECTED meanings
is this meaning the attribute can not be overwritten from the top of the hierarchy? is so, does not work for me Nick http://www.linkedin.com/in/tnick Sent from Izmit, 41, Turkey ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] QT GL widget: switch to full screen vanishes scene graph parts
Hi, quite not sure what happens to gl objects when switching QT widget to fullscreen, I found a solution. A node visitor calling releaseGLObjects() on drawables does the trick. Thank you! Cheers, Maurice -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22930#22930 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] Problems using SSI Cluster Example
Hi, The problem have been solved. I only had to configure nfs. I must read more carefully. Thank you so much! Cheers, Samuel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22931#22931 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] Problems using SSI Cluster Example
Hi, Samuel Jarque wrote: Hi, The problem have been solved. I only had to configure nfs. I must read more carefully. great to know that it works. If you have some time, please add a page to the vpb wiki detailing your setup. I'm sure someone will find it useful later. rgds jp Thank you so much! Cheers, Samuel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22931#22931 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Usage of osg::Node clone methode.
Hi,
I'm actually in my second year for a diploma in IT. We curreently work on a
group project using OpenSceneGraph.
We're making a turn by turn tactical game. On our map, we want to load some
trees. We have a .obj model (soon .osg) and use osgDB::ReadNodeFile to load it,
and put it in a PositionAttituteTransform with the good pos.
The problem is that it took some time to load the model (around a second)...I
try to avoid it by copying the already loaded model, using the clone function
of osg::Node in a for loop, and puting the cloned node inside a newly created
PositionAttituteTransform ...
But only one tree apears on the map.
If i use each time osgDB::ReadNodeFile in the loop, it works, i've got my tree,
but it took ~ 5 second for 5 trees
Here's my code, maybe more clear than my english...
Code:
//Loading of the model
osg::ref_ptrosg::Node Arbre = osgDB::readNodeFile(modeles/arbre.obj);
osg::ref_ptrosg::PositionAttitudeTransform temp;
for(int i = 0 ; i 5; i++)
{
temp = new osg::PositionAttitudeTransform;
osg::Node* copy = dynamic_castosg::Node*(Arbre-clone(osg::CopyOp()));
temp-addChild(copy);
temp-setPosition(myPos);
this-addChild(temp.get());
}
this is my class which inherit from osg::Group.
Did i use it wrong? Is it not possible to copy a node loaded byt
osg::ReadNodeFile?
Thank you![/code]
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Re: [osg-users] Usage of osg::Node clone methode.
Hi,
you dont need to clone the model for this purpose. Use the one loaded with
different MatrixTransforms on top
osg::ref_ptrosg::Node Arbre = osgDB::readNodeFile(modeles/arbre.obj);
for(int i = 0 ; i 5; i++)
{
osg::PositionAttitudeTransform* temp = new osg::PositionAttitudeTransform;
temp-addChild(Abre.get());
temp-setPosition(myPos);
this-addChild(temp.get());
}
Also use osgconv to convert it into ive (osgconvert model.obj model.ive). It
will load much faster
Nick
http://www.linkedin.com/in/tnick
Sent from Izmit, 41, Turkey
On Wed, Jan 20, 2010 at 3:32 PM, Guillaume Saby luckybo...@hotmail.frwrote:
Hi,
I'm actually in my second year for a diploma in IT. We curreently work on a
group project using OpenSceneGraph.
We're making a turn by turn tactical game. On our map, we want to load some
trees. We have a .obj model (soon .osg) and use osgDB::ReadNodeFile to load
it, and put it in a PositionAttituteTransform with the good pos.
The problem is that it took some time to load the model (around a
second)...I try to avoid it by copying the already loaded model, using the
clone function of osg::Node in a for loop, and puting the cloned node inside
a newly created PositionAttituteTransform ...
But only one tree apears on the map.
If i use each time osgDB::ReadNodeFile in the loop, it works, i've got my
tree, but it took ~ 5 second for 5 trees
Here's my code, maybe more clear than my english...
Code:
//Loading of the model
osg::ref_ptrosg::Node Arbre = osgDB::readNodeFile(modeles/arbre.obj);
osg::ref_ptrosg::PositionAttitudeTransform temp;
for(int i = 0 ; i 5; i++)
{
temp = new osg::PositionAttitudeTransform;
osg::Node* copy = dynamic_castosg::Node*(Arbre-clone(osg::CopyOp()));
temp-addChild(copy);
temp-setPosition(myPos);
this-addChild(temp.get());
}
this is my class which inherit from osg::Group.
Did i use it wrong? Is it not possible to copy a node loaded byt
osg::ReadNodeFile?
Thank you![/code]
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[osg-users] Vertex Buffer Objects and Transform Feedback
Hello, I am trying to implement a particle system residing on the GPU using vertex buffer objects and transform feedback. Currently, my plan for achieving this looks like this: 1 - Define two VBOs 2 - Render vertex buffer 1 and let a geometry shader update vertex (particle) positions, size, and whatnot. 3 - Store the updated vertices in vertex buffer 2 using transform feedback 4 - Render VB 2 using a second geometry shader, creating billboards out of the points in the buffer. 5 - Swap buffers 1 and 2. However, I am not sure how exactly to go about this using OSG. It turns out this was much harder to do than I anticipated :) For starters, I extended osg::Drawable, which seemed like to the most straightforward approach. Instead of using DrawElement/DrawArrays (for which I didn't find a way to swap buffers) I figured I'd create two seperate osg::VertexBufferObject fields and use them by manually binding the buffers and drawing them. Like so: Code: // Init mVertices = new osg::Vec4Array(); // A couple of vertices for testing purposes mVertices-push_back(osg::Vec4(0.0f, 0.0f, 0.0f, 1.0f)); mVertices-push_back(osg::Vec4(2.0f, 0.0f, 0.0f, 1.0f)); // Just showing one VBO for clarity mVbo1 = new osg::VertexBufferObject(); mVbo1-addArray(mVertices.get()); mVbo1-getOrCreateGLBufferObject(state.getContextID())-compileBuffer(); Code: // Render /* snip */ state.setVertexPointer(mVertices.get()); state.bindVertexBufferObject(mVbo1-getGLBufferObject(state.getContextID()) ); glDrawArrays(GL_POINTS, 0, mVertices-size()); Unfortunately, this resulted in the following error messages Code: Error: glGenBuffers not supported by OpenGL driver Error: glBindBuffer not supported by OpenGL driver Error: glBufferData not supported by OpenGL driver Error: glBufferData not supported by OpenGL driver which, after a quick look at the source, seems to have something do with the proper extensions not being initialized... Any ideas? Secondly, as OSG to my knowledge doesn't have native support for transform feedback, I figured to use Glew to access the needed functions (glBeginTransformFeedback, glEndTransformFeedback, etc). However, glewInit() fails to initialize properly and the basic gist of [another thread] is that you shouldn't use glew. 8) So what options do I have? I realize that I am quite vague in my description but I'm just fishing for a bit of information on how to do these things the OSG way. If there is a better way, please let me know! :) As for version, I am using OSG 2.9.6 Thanks! Regards, Mattias -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22936#22936 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] Problems using SSI Cluster Example
Hi, I use sshf for the shared working directory. It is'nt the fastet solution I suppose, but its easy to setup. Cheers, Torben -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22937#22937 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::StateAttribute::PROTECTED meanings
Trajce Nikolov wrote on 2010-01-20: is this meaning the attribute can not be overwritten from the top of the hierarchy? is so, does not work for me Yes, that is the meaning. However, the top of the hierarchy can use OVERRIDE to override the PROTECTED state, IIRC. Can you give an example of how you trying to use PROTECTED? Perhaps something else is going wrong... -- Bryan Thrall FlightSafety International bryan.thr...@flightsafety.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::StateAttribute::PROTECTED meanings
well, I fixed it with a shader. But, if this is meant to be protected, then it shouldnt be overriden I think Nick http://www.linkedin.com/in/tnick Sent from Izmit, 41, Turkey On Wed, Jan 20, 2010 at 4:50 PM, Thrall, Bryan bryan.thr...@flightsafety.com wrote: Trajce Nikolov wrote on 2010-01-20: is this meaning the attribute can not be overwritten from the top of the hierarchy? is so, does not work for me Yes, that is the meaning. However, the top of the hierarchy can use OVERRIDE to override the PROTECTED state, IIRC. Can you give an example of how you trying to use PROTECTED? Perhaps something else is going wrong... -- Bryan Thrall FlightSafety International bryan.thr...@flightsafety.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
Re: [osg-users] osg::StateAttribute::PROTECTED meanings
Thrall, Bryan wrote: Yes, that is the meaning. However, the top of the hierarchy can use OVERRIDE to override the PROTECTED state, IIRC. Actually, PROTECTED keeps the state from being overridden. The default inheritance is INHERIT, which means that state inherits down the scene graph unless a child node sets the same state to a different value. In that case, it doesn't actually inherit at all, and the child state takes effect. OVERRIDE, when set on a parent state mode or attribute, means that the parent's state will override a child's state. If forces parent state to always be inherited by children, even if they specify the same state with different values. Finally, a child has the option of setting state with the PROTECTED mode bit, which means that even if a parent node sets the same state with OVERRIDE, the child's state will take effect. On a tangent... These really seem like misnomers. INHERIT really _doesn't_ inherit when the child sets the same state, and OVERRIDE actually forces inheritance to happen. So if I were going to rename them, I'd have something like this: old namenew name INHERIT DEFAULT OVERRIDEINHERIT PROTECTED PROTECTED Just a thought. -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] dynamic changes problem
Hi All, I have a scene whose nodes are set with a DYNAMIC dataVariance, because they need to be dynamically modified. When I first create the scene, it shows up OK in the viewer. The problem occurs when I remove all drawables from a Geode and try to add new drawables to the same Geode. The viewer properly removes all Geode's drawables, but doesn't show up the new ones. While debugging, I can see that the new added drawbles are in the geode drawbles list. I can also view them properly if I save the scene in an .osg and launch it with osgViewer.exe The problem only occurs in the same viewer. I've tried to set the display list OFF in each node of the scene, and also using dirtyBound() to the modified Geode, but it didn't change anything. Thanks in advance for your help. F. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::StateAttribute::PROTECTED meanings
Paul Martz wrote: On a tangent... These really seem like misnomers. INHERIT really _doesn't_ inherit when the child sets the same state, and OVERRIDE actually forces inheritance to happen. So if I were going to rename them, I'd have something like this: old namenew name INHERIT DEFAULT OVERRIDEINHERIT PROTECTED PROTECTED Continuing the tangent a bit... Renaming OVERRIDE to INHERIT would be rather confusing to me. When you set the state on a node, to me the mode should be named from the point of view of the node, not the children of that node. OVERRIDE makes sense, as the state on this node will be overriding the state settings of its children. INHERIT would make sense if you're considering it from the point of view of the children. However, when you're making a setAttributeAndModes() call, your point of view is with the overriding node, not with its children. I'm a little more indifferent wrt INHERIT vs. DEFAULT. I'd just as soon leave that one alone as well. --J ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::StateAttribute::PROTECTED meanings
here was my case. and also this might have something to do with lazy state update the top node has 3 textures assigned the children only one with setting 0 and protected I was expecting the child to have only one texture, but it inherits the additional textures from the top node as well. So I fixed it with VirtualProgram for this case Nick http://www.linkedin.com/in/tnick Sent from Izmit, 41, Turkey On Wed, Jan 20, 2010 at 6:10 PM, Jason Daly jd...@ist.ucf.edu wrote: Paul Martz wrote: On a tangent... These really seem like misnomers. INHERIT really _doesn't_ inherit when the child sets the same state, and OVERRIDE actually forces inheritance to happen. So if I were going to rename them, I'd have something like this: old namenew name INHERIT DEFAULT OVERRIDEINHERIT PROTECTED PROTECTED Continuing the tangent a bit... Renaming OVERRIDE to INHERIT would be rather confusing to me. When you set the state on a node, to me the mode should be named from the point of view of the node, not the children of that node. OVERRIDE makes sense, as the state on this node will be overriding the state settings of its children. INHERIT would make sense if you're considering it from the point of view of the children. However, when you're making a setAttributeAndModes() call, your point of view is with the overriding node, not with its children. I'm a little more indifferent wrt INHERIT vs. DEFAULT. I'd just as soon leave that one alone as well. --J ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::StateAttribute::PROTECTED meanings
Trajce Nikolov wrote: here was my case. and also this might have something to do with lazy state update the top node has 3 textures assigned the children only one with setting 0 and protected I was expecting the child to have only one texture, but it inherits the additional textures from the top node as well. So I fixed it with VirtualProgram for this case Hi, Trajce, Each texture unit is effectively a different state attribute/mode. You'd have to set all three textures on the child's state to show only the one... childState-setTextureAttributeAndModes(0, childTex, osg::StateAttribute::ON); childState-setTextureMode(1, GL_TEXTURE_2D, osg::StateAttribute::OFF); childState-setTextureMode(2, GL_TEXTURE_2D, osg::StateAttribute::OFF); There shouldn't be any need for PROTECTED (unless the parent has OVERRIDE turned on). --J ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FFmpeg and sound
Robert Osfield wrote: I have been thinking about the potential of an osgAudio library that abstracts away from the implementation details of OpenAL and keeps the door open to multiple implementations, and then within this have some form of registration of the audio implementation, then the audio implementations would plugin in to this, or like osgViewer just be built into the osgAudio library. osgViewer and it's handling of GraphicsWindow implementation might be a reasonable model for this. An straight audio sink is rather more straight forward than this though... so perhaps one could just have a slimline AudioSystemInterface/Factory class a bit like osg::GraphicsContext::WindowingSystemInterface singleton and then have this be where you register your scheme for implementing the AudioSink. Then in the plugins that need an audio sink it can go to this singleton and grab and implementation. The plugin might also use osgDB to load a plugin to force the registration of a implementation of a AudioSystemInterface. Such an approach would be easier to graft on than writing a full blown osgAudio library. Thanks, that helps a lot. I'll keep that in mind if I find myself with more free time anytime soon :-) --J ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::StateAttribute::PROTECTED meanings
Hi Jason, that is what I exactly did. I put the PROTECTED there becaouse the parent has OVERRIDE set on it. Did not worked :-) ... Nick http://www.linkedin.com/in/tnick Sent from Izmit, 41, Turkey On Wed, Jan 20, 2010 at 6:23 PM, Jason Daly jd...@ist.ucf.edu wrote: Trajce Nikolov wrote: here was my case. and also this might have something to do with lazy state update the top node has 3 textures assigned the children only one with setting 0 and protected I was expecting the child to have only one texture, but it inherits the additional textures from the top node as well. So I fixed it with VirtualProgram for this case Hi, Trajce, Each texture unit is effectively a different state attribute/mode. You'd have to set all three textures on the child's state to show only the one... childState-setTextureAttributeAndModes(0, childTex, osg::StateAttribute::ON); childState-setTextureMode(1, GL_TEXTURE_2D, osg::StateAttribute::OFF); childState-setTextureMode(2, GL_TEXTURE_2D, osg::StateAttribute::OFF); There shouldn't be any need for PROTECTED (unless the parent has OVERRIDE turned on). --J ___ 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] Usage of osg::Node clone methode.
Hi,
Well this doesn't work ^^...
I tried, and only one tree appears, but if a do :
for(int i = 0 ; i 5; i++)
{
osg::PositionAttitudeTransform* temp = new osg::PositionAttitudeTransform;
temp-addChild(osgDB::readNodeFile(modeles/arbre.obj));
temp-setPosition(myPos);
this-addChild(temp);
}
This work, i got all my trees
But thanks for your help anyways.
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Re: [osg-users] Usage of osg::Node clone methode.
well, I can not see why it shouldnt work. Are you setting different
positions in the loop ?
Nick
http://www.linkedin.com/in/tnick
Sent from Izmit, 41, Turkey
On Wed, Jan 20, 2010 at 7:02 PM, Guillaume Saby luckybo...@hotmail.frwrote:
Hi,
Well this doesn't work ^^...
I tried, and only one tree appears, but if a do :
for(int i = 0 ; i 5; i++)
{
osg::PositionAttitudeTransform* temp = new osg::PositionAttitudeTransform;
temp-addChild(osgDB::readNodeFile(modeles/arbre.obj));
temp-setPosition(myPos);
this-addChild(temp);
}
This work, i got all my trees
But thanks for your help anyways.
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Re: [osg-users] PagedLOD DatabasePager crash
Robert,
Here is a sample program that crashes when loading earth.ive the second
time. I'm using OSG 2.8.2.
Thanks,
Brett
main()
{
std::string modelPath = earth.ive;
// create a scene graph (and keep it around).
osg::ref_ptrosg::Node modelNode = osgDB::readNodeFile(modelPath);
// create viewer1 and set the scene graph data.
osgViewer::Viewer* viewer1 = new osgViewer::Viewer;
viewer1-setUpViewOnSingleScreen(0);
viewer1-setSceneData(modelNode.get());
viewer1-setCameraManipulator(new osgGA::TrackballManipulator());
// render a frame
viewer1-realize();
while(!viewer1-done())
{
viewer1-frame();
}
// delete viewer1.
delete viewer1;
viewer1 = 0;
// create viewer2 and set the scene graph data.
osgViewer::Viewer* viewer2 = new osgViewer::Viewer;
viewer2-setUpViewOnSingleScreen(0);
viewer2-setSceneData(modelNode.get());
viewer2-setCameraManipulator(new osgGA::TrackballManipulator());
// render a frame
viewer2-realize();
while(!viewer2-done())
{
viewer2-frame();
}
// check that it has textures.
// delete viewer2.
delete viewer2;
viewer2 = 0;
}
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 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 Branch cbra...@mak.com wrote:
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 render the sane database
(same nodes).
I'm getting a crash in the database pager, specifically it crash in the
requestNodeFile function due to crashing on accessing invalid memory.
The problem seems to step from the PagedLOD having a ref_ptr to a
DatabasePager::DatabaseRequest.
The databaseRequest has a raw pointer to a RequestQueue.
The RequestQueue is invalid (as it is a referenced member of the original
database pager, and thus is already deleted, but the DB request stayed
alive).
There appears to be no way of clearing the databaseRequest which is
referenced in the PagedLOD node.
This appears to be a problem with how OSG handles database paging, probably
a bug. No obvious solution pops out, mainly due to the low level nature of
the problem.
This is an important issue since it affects one of our customers.
I welcome any comments/suggestions/workarounds.
Thank you and best regards,
Colin Branch
--
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VT MAK
work: (617) 876-8085 Ext. 159
email: cbra...@mak.com
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Re: [osg-users] PagedLOD DatabasePager crash
Hi Brett,
You really should learn to use ref_ptr's, manually deleting ref
counting objects is dangerous and only possible Viewer as I haven't
put the destructor private to allow one to construct the Viewer on the
stack for convenience, not to allow delete...
That sermon aside, could you please try your example with svn/trunk or 2.9.6.
Thanks,
Robert.
On Wed, Jan 20, 2010 at 8:25 PM, Brett Wiesner brettwies...@gmail.com wrote:
Robert,
Here is a sample program that crashes when loading earth.ive the second
time. I'm using OSG 2.8.2.
Thanks,
Brett
main()
{
std::string modelPath = earth.ive;
// create a scene graph (and keep it around).
osg::ref_ptrosg::Node modelNode = osgDB::readNodeFile(modelPath);
// create viewer1 and set the scene graph data.
osgViewer::Viewer* viewer1 = new osgViewer::Viewer;
viewer1-setUpViewOnSingleScreen(0);
viewer1-setSceneData(modelNode.get());
viewer1-setCameraManipulator(new osgGA::TrackballManipulator());
// render a frame
viewer1-realize();
while(!viewer1-done())
{
viewer1-frame();
}
// delete viewer1.
delete viewer1;
viewer1 = 0;
// create viewer2 and set the scene graph data.
osgViewer::Viewer* viewer2 = new osgViewer::Viewer;
viewer2-setUpViewOnSingleScreen(0);
viewer2-setSceneData(modelNode.get());
viewer2-setCameraManipulator(new osgGA::TrackballManipulator());
// render a frame
viewer2-realize();
while(!viewer2-done())
{
viewer2-frame();
}
// check that it has textures.
// delete viewer2.
delete viewer2;
viewer2 = 0;
}
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 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 Branch cbra...@mak.com wrote:
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 render the sane
database
(same nodes).
I'm getting a crash in the database pager, specifically it crash in the
requestNodeFile function due to crashing on accessing invalid memory.
The problem seems to step from the PagedLOD having a ref_ptr to a
DatabasePager::DatabaseRequest.
The databaseRequest has a raw pointer to a RequestQueue.
The RequestQueue is invalid (as it is a referenced member of the original
database pager, and thus is already deleted, but the DB request stayed
alive).
There appears to be no way of clearing the databaseRequest which is
referenced in the PagedLOD node.
This appears to be a problem with how OSG handles database paging,
probably
a bug. No obvious solution pops out, mainly due to the low level nature
of
the problem.
This is an important issue since it affects one of our customers.
I welcome any comments/suggestions/workarounds.
Thank you and best regards,
Colin Branch
--
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VT MAK
work: (617) 876-8085 Ext. 159
email: cbra...@mak.com
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[osg-users] Drawing around screen selection
Does anyone have any suggestions for showing a live mouse selected region on screen? Currenlty for selecting areas near the ground I create a transparent plane just below ground level, do a linesegment intersect and then draw a polygon on the plane at the intersection points. But I now need to be able to select areas of points to delete from any angle with a polytope. One solution would be to generate a large invisible plane parralel to the screen at some distance and draw a polygon onto this (while locking rotations). Is there a better approach? Martin -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22955#22955 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Drawing around screen selection
I have done this before with selection buffer Nick http://www.linkedin.com/in/tnick On Wed, Jan 20, 2010 at 10:47 PM, Martin Beckett m...@mgbeckett.com wrote: Does anyone have any suggestions for showing a live mouse selected region on screen? Currenlty for selecting areas near the ground I create a transparent plane just below ground level, do a linesegment intersect and then draw a polygon on the plane at the intersection points. But I now need to be able to select areas of points to delete from any angle with a polytope. One solution would be to generate a large invisible plane parralel to the screen at some distance and draw a polygon onto this (while locking rotations). Is there a better approach? Martin -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22955#22955 ___ 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] Uniform per slave Camera
Hi all -- I'm trying to find a way to set a Uniform to a different value depending on the display. In a multi-display environment, this uniform variable would have a different value depending on which display is being rendered to. Ideally, this should support osgViewer as well as other viewer models (direct SceneView usage, osgProducer, VR-Juggler, etc). I've already looked at supporting this for osgViewer apps by using slave Cameras to hold the Uniforms. If the slave Cameras were actually nodes in the scene graph, this would be pretty easy. For a dual monitor system, the scene graph would be multi-parented to the two slave Cameras, and the slave Camera StateSets would each contain their Uniform with the same uniform variable name but with different values. Unfortunately, slave Cameras are not nodes in the scene graph and don't have StateSets (as far as I know -- someone correct me if slave Cameras actually do have StateSets that affect rendering). So I looked at how OSG sets the osg_ViewMatrix Uniform for inspiration, because the uniform value could potentially be different for each display. Turns out this is stored in the local StateSet of the SceneView, and there is one SceneView per slave Camera. I imagine I could code a solution like this, but with the SceneView class marked deprecated, I'm reluctant to code a solution that depends on its existence. Alternatively, it seems like I could use a cull callback to set the Uniform directly in osg::State. But there doesn't appear to be a public method for this. Am I missing something? This would certainly be the easiest and most efficient solution, and would work for any viewer usage, as long as there is a cull traversal per display (a pretty safe bet). Thanks for any ideas. (Not that it matters, but the Uniform is a 4x4 matrix, and is a concatenation of the view orientation and the projection with tweaked near/far values. It's derived from the actual view and projection matrices in use per display, so in theory I could derive this matrix in the vertex shader, but it would be redundant to do this work for every vertex.) -- Paul Martz Skew Matrix Software LLC _http://www.skew-matrix.com_ http://www.skew-matrix.com/ +1 303 859 9466 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osg::DrawPixels bounding box and picking (2.8.2)
Hi, - The boundingBox() method of the osg::DrawPixels is implemented, but a bit wacky as it is based purely on pixel dimensions and will in general be completely wrong. This throws off camera bounding box calculations badly. For example a 200x200 pixel image is given a BB of 200x200x200 units - Picking of a osg::DrawPixels() is not implemented. does anyone have a working implementation for these functions? Basically I am drawing small 2D images at points on my 3D model and need to be able to pick them. Thanks. Andrew -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22960#22960 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Changing the window of a Viewer
Hi,
I forgot to mention that I am also calling releaseGLObjects on the
viewer.
i.e. When I show the window, if I already have a GraphicsWindows I call:
if(m_gw.valid()) {
m_viewer-releaseGLObjects();
m_gw-close();
}
I then create a new graphics window and set it on the viewer:
osg::ref_ptrosg::Referenced windata = new
osgViewer::GraphicsWindowWin32::WindowData(hwnd, true);
osg::ref_ptrosg::GraphicsContext::Traits traits = new
osg::GraphicsContext::Traits;
traits-inheritedWindowData = windata;
//.. all the other traits setting here
osg::ref_ptrosgViewer::GraphicsWindowWin32 window = new
osgViewer::GraphicsWindowWin32(traits);
m_gw = window;
window-realize();
osg::GraphicsContext* gc = window;
m_viewer-getCamera()-setGraphicsContext(gc);
Cheers,
Brad
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Christiansen, Brad
Sent: Thursday, 21 January 2010 9:30 AM
To: OpenSceneGraph Users
Subject: [osg-users] Changing the window of a Viewer
Hi,
I have setup a viewer using an existing window (supplying the HWND to a
GraphicsWindowWin32). In my application, this window can be toggled on
and off. If I do nothing when this happens the GraphicsWindowWin32
complains of an invalid handle when swapping buffers.
As such, I wish to recreate the context when the window is displayed. I
have tried simply calling close on the on the old GraphicsWindowWin32
and then creating a new instance with the new window handle and setting
this on the viewer (osgViewer::Viewer). When I do this, sometimes my
model displays with corrupt textures, but in all cases I get a 'GL is
out of memory' error. I am guessing that I am not cleaning up the old
context and its associated Texture Objects etc correctly.
My question is, what is the correct way of doing this? What methods do I
need to call to clean up all the old GL objects and make sure new ones
are created? Also, do I need to call these methods while the windows
handle is still valid, and do I need to do this on the rendering thread.
Cheers,
Brad
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[osg-users] Vista/Windows 7 visual problems on resize
When running on Windows 7/Vista using accelerated graphics, and when resizing a window, an MFC OSG window flashes a lot and phantom bits of the window frame are left behind while resizing. The same is seen when using an MFC CRectTracker and TrackRubberBand on the OSG 3D window, the old Rect is not properly erased and the tracks of the box are left behind. None of this is seen on XP/XP64 and is not specific to a particular graphics card vendor. If you log onto the Windows 7 machine via RDC ( which causes a default OpenGL software driver to be used) these issues are not visible. This is , I am sure , and old Vista issue , but in our field (CAE) not a single user 'upgraded' to Vista - they are upgrading to W7... Thanks for any ideas -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22963#22963 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Vista/Windows 7 visual problems on resize
Hello Andrew, When running on Windows 7/Vista using accelerated graphics, and when resizing a window, an MFC OSG window flashes a lot and phantom bits of the window frame are left behind while resizing. The same is seen when using an MFC CRectTracker and TrackRubberBand on the OSG 3D window, the old Rect is not properly erased and the tracks of the box are left behind. This won't help you much, but we haven't seen these kinds of issues with OSG either running its own window or embedded in a QWidget on Windows Vista/7. So perhaps it's a problem with the MFC part of your app. I can't be sure of course, never having used OSG with MFC myself. I hope this additional data point will help... J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Vista/Windows 7 visual problems on resize
I think this answers my question , at least regarding trying to use CRectTracker. From http://www.opengl.org/pipeline/article/vol003_7/ GDI is no longer hardware-accelerated, but instead rendered to system memory using the CPU. That rendering is later composed on a 3D surface in order to be shown on the desktop. The graphics hardware video driver is no longer involved in GDI rendering, which means that mixing GDI and accelerated 3D rendering in the same window is likely to produce corruption like stale or blanked 3D rendering, trails, etc. Using Microsoft's OpenGL software rendering (the first item in the four OpenGL implementations) will achieve GDI compatibility, but at the expense of rendering speed and lack of modern features. So no mixing of GDI and accelerated 3D into the same window... The problem with resizing is obviously related. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22965#22965 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Vista/Windows 7 visual problems on resize
So this now begs the question.. how to draw a nice zoom box using 'pure' OpenGL/OSG since I can't use CRectTracker/GDI -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22966#22966 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Disney open source 3D stuff....
Hi all, Disney has released some of their tools as opensource. No idea if it's relevant here but the slashdot article, http://tinyurl.com/ydctxqd seems to be fully buzzword compliant: 3D texture mapping BSD licence open source 3D graphics Now back to lurking. Andrew ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Drawing around screen selection
Trajce Nikolov wrote: I have done this before with selection bufferNick Erm - can you elaborate a little? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22969#22969 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Uniform per slave Camera
Paul Martz wrote: Alternatively, it seems like I could use a cull callback to set the Uniform directly in osg::State. But there doesn't appear to be a public method for this. Am I missing something? This would certainly be the easiest and most efficient solution, and would work for any viewer usage, as long as there is a cull traversal per display (a pretty safe bet). No help needed; Something quite like this is currently working for me. For the archives... My cull callback class keeps a std::map CullVisitor*, osg::StateSet* , basically a StateSet per CullVisitor. In the StateSet, I have just the one Uniform I need to set. When my cull callback is executed, it gets the StateSet for the current CullVisitor (thread safe), updates the Uniform to the value appropriate for this display, and calls osgUtil::CullVisitor::pushStateSet(), then traverse(), then the corresponding popStateSet(). This allows me to have the same shader uniform variable set to different values depending on the CullVisitor, essentially, per display or per slave Camera. This approach should work regardless of the viewer used by the app. If anyone has better ideas for how to do this, feel free to post. -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
