Re: [osg-users] transparency problem
Hi Robert, There are lots of transparent objects/nodes in my scene. I need to place them in the depth sorted bin. How can I find out these transparent nodes quickly? Thanks a lot. Regards, Su Hu 2009/5/28 Tomlinson, Gordon gtomlin...@overwatch.textron.com Also make sure you multi-sampling turned on, this show up much more when multi-sampling is off Gordon Product Manager 3d __ Gordon Tomlinson Email : gtomlinson @ overwatch.textron.com __ -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Robert Osfield Sent: Wednesday, May 27, 2009 11:08 AM To: OpenSceneGraph Users Subject: Re: [osg-users] transparency problem Hi J.P, On Wed, May 27, 2009 at 3:01 PM, J.P. Delport jpdelp...@csir.co.za wrote: What specifically is a part? Geode, Geometry, PrimitiveSet, Triangle? The transparent bin is sorted by the distance away from the eye of center of the drawables. To get finner grained sorted you have to break the large drawable into smaller ones. The drawables are usually osg::Geometry, so you'd break these into a series of smaller osg::Geometry. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or ghttp://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or%0Ag ___ 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] transparency problem
Hi Robert, Thanks for your reply. Our 3D modeler tell me that the same model is shown right in vega view. We will break large objects up into small parts and try it again. Thanks a lot. Regards, Su Hu 2009/5/27 Robert Osfield robert.osfi...@gmail.com Hi Su Hu, You need to place transparent objects in the depth sorted bin, normally loaders will do this for you. There is a chance that these objects are already in the transparent bin but you have some very large transparent objects in the scene as well that are causing the depth sorting to perform poorly - if this is the case you need to break the large objects up into small parts to allow depth sorting to work correctly. Robert. On Wed, May 27, 2009 at 2:26 PM, su hu ttts...@gmail.com wrote: Hi all. Some transparent textures are used in our model. When we render this model by osg v2.8, we find some problem as attached snapshot. We try to change orders(in model structure) of those transparent objects to get right result, but failed. Any special setting should be included in program?Thanks for your help. Regards, Su Hu ___ 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] Can not create OpenGL texture in OSG
Thank you, ulrich.
Now I load texture files in camera callback and solve the problem.
I use ms3d models and render them by OpenGL. So I have to load model and
texture files by myself.
Thanks for your help.
Su Hu
2009/4/16 Ulrich Hertlein u.hertl...@sandbox.de
The reason for this is that you don't have a valid OpenGL context.
But apart from that is there a reason why you're trying to create the
texture yourself?
Instead of using, say, OSG for that?
/ulrich
On 16/4/09 6:58 AM, su hu wrote:
After glGenTextures, I use glGetError to get the error. The result is :
GL_INVALID_OPERATION.
...
2009/4/16 su hu ttts...@gmail.com mailto:ttts...@gmail.com
Hi all,
When I tried to create a texture by glGenTextures in OSG, I met a
problem. glGenTextures can not create a texture object. Zero is
returned and no texture is created. Source codes are as follow:
...
else if(LoadTexture)
{
GLuintTexID = 0;
glGenTextures(1, TexID );
}
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[osg-users] Can not create OpenGL texture in OSG
Hi all,
When I tried to create a texture by glGenTextures in OSG, I met a problem.
glGenTextures can not create a texture object. Zero is returned and no
texture is created. Source codes are as follow:
while(!Viewer.done())
{
...
if(Render)
{
Viewer.frame();
}
else if(LoadTexture)
{
GLuintTexID = 0;
glGenTextures(1, TexID );
}
}
Version of my osg is 2.8 for vs2005. OS is Win XP professional. Graphics
card is ATI X1600.
Thanks for your help!
Su Hu
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Re: [osg-users] Can not create OpenGL texture in OSG
After glGenTextures, I use glGetError to get the error. The result is :
GL_INVALID_OPERATION.
OpenGL manual (
http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/gentextures.html)gives
the reason as:
*GL_INVALID_OPERATION* is generated if *glGenTextures* is
executed between the execution of *glBegin* and the
corresponding execution of *glEnd*.
But I dont know how to do. Thanks for your help.
Su Hu
2009/4/16 su hu ttts...@gmail.com
Hi all,
When I tried to create a texture by glGenTextures in OSG, I met a problem.
glGenTextures can not create a texture object. Zero is returned and no
texture is created. Source codes are as follow:
while(!Viewer.done())
{
...
if(Render)
{
Viewer.frame();
}
else if(LoadTexture)
{
GLuintTexID = 0;
glGenTextures(1, TexID );
}
}
Version of my osg is 2.8 for vs2005. OS is Win XP professional. Graphics
card is ATI X1600.
Thanks for your help!
Su Hu
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[osg-users] how to draw ms3d model
Hi all, In our application, hundreds of human animated models should be loaded into scene. We use ms3d format models. Now we do it as follow: 1. load models 2. create a osg::Geode and add it to scene 3. add a osg::Drawable to this Geode 4. add a osg::NodeCallback to this Geode 5. calculate and update models in the NodeCallback 6. draw models in drawImplementation of the Drawable (using OpenGL). Maybe there is better way to render ms3d model. Could you please give me some advice? Thanks for your helps. Su Hu ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Edge blending
Hi Robert Thanks for your reply. I will see the osghud example and try your method. Thanks. Best Regards, Su Hu 2008/10/15 Robert Osfield [EMAIL PROTECTED] Hi Su Hu, I haven't personally implemented edge blending yet, but it should be straight forward. All you need to do is render a alpha blending quad over the edge of window as a HUD. See the osghud example for inspiration. Robert. On Wed, Oct 15, 2008 at 9:18 AM, su hu [EMAIL PROTECTED] wrote: Hi all, I want to implement edge blending by osg, but I don't know which way is better. Our requirement of edge blending is simple: overlapped area of two screens is rectangular. If someone has done it, please give me some advice. Much appreciation to any reply. Regards, Su Hu ___ 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] moving models...
Shayne,
In my application, a global buffer is used to input data to osg thread from
other thread.
I used the method as same as Todd told you. setMatrix() is used to update
the matrix of that MatrixTransform node.
...
osg::ref_ptrosg::group root;
osg::ref_ptrosg::MatrixTransform MotionMatrix;
osg::ref_ptrosg::node MotionModelFile; //your motion
model
...
root-addchild(MotionMatrix);
MotionMatrix-addchild(MotionModelFile);
...
while((!Viewer.done)
{
...
if(Update is
Needed) //position
is changed or other
MotionMatrix--setMatrix(osg::Matrix::translate(Pos)); //your
position data
...
Viewer.frame();
...
}
su hu
2008/8/2, Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC
[EMAIL PROTECTED]:
This is probably a silly and simple question, but does anyone have an
example of how to move a model explicitly without using a canned animation?
Most of the examples I've seen, update the position in an animation using
UpdateCallback.
I have a position update coming from another process outside the scenegraph
that I need to feed into the model to update its position. Do I need to use
an UpdateCallback or a NodeVisitor approach?
Any help would be most appreciated…
Thanks,
-Shayne
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[osg-users] how to release loaded model
Hi all.
I need to release loaded model and reload other model. I did as follow:
osgViewer::ViewerViewer;
osg::ref_ptrosg::Group root = new osg::Group;
osg::ref_ptrosg::Group ModelRoot = new osg::Group;
osg::ref_ptrosg::Node loadedModel;
...
Viewer.setSceneData(root.get());
root-addChild(ModelRoot.get());
...
//in frame loop
.
switch(CMD)
{
case LOAD_SCENE:
{
loadedModel = osgDB::readNodeFile(CMD_SceneFileName);
if (loadedModel.valid())
{
ModelRoot-addChild(loadedModel.get());
}
break;
}
case RELEASE_SCENE:
{
if(ModelRoot.valid())
{
ModelRoot-removeChildren(0,ModelRoot-getNumChildren());
}
loadedModel.release();
break;
}
}
...
The loadedModel is added to ModelRoot and is not added to any other group.
Models could be loaded and released. But I found used memory was not
reduced at all after RELEASE_SCENE was executed. After loading and
releasing several times, used memory is more than 1GB and program is
freezed. I want to know the reason and how to improve it.
Much appreciation to any reply.
Regards,
Su Hu
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Re: [osg-users] how to release loaded model
Hi Robert,
I set ref_ptr to null. It works well. Thanks a lot.
Best Regards,
Su Hu
2008/7/24 Robert Osfield [EMAIL PROTECTED]:
Hi Su,
You shouldn't be called ref_ptr.release() in this context, you should
be just setting the ref_ptr to null.
ref_ptr::release() is a specialist helper method with does an
unref_noDelete on the referenced object - it deliberately doesn't
delete the object that it's unrefecing. This functionality is
required for functions that use ref_ptr locally but then have to
pass a C* point of the object.
Robert.
On Thu, Jul 24, 2008 at 10:45 AM, su hu [EMAIL PROTECTED] wrote:
Hi all.
I need to release loaded model and reload other model. I did as follow:
osgViewer::ViewerViewer;
osg::ref_ptrosg::Group root = new osg::Group;
osg::ref_ptrosg::Group ModelRoot = new osg::Group;
osg::ref_ptrosg::Node loadedModel;
...
Viewer.setSceneData(root.get()
);
root-addChild(ModelRoot.get());
...
//in frame loop
.
switch(CMD)
{
case LOAD_SCENE:
{
loadedModel = osgDB::readNodeFile(CMD_SceneFileName);
if (loadedModel.valid())
{
ModelRoot-addChild(loadedModel.get());
}
break;
}
case RELEASE_SCENE:
{
if(ModelRoot.valid())
{
ModelRoot-removeChildren(0,ModelRoot-getNumChildren());
}
loadedModel.release();
break;
}
}
...
The loadedModel is added to ModelRoot and is not added to any other
group.
Models could be loaded and released. But I found used memory was not
reduced at all after RELEASE_SCENE was executed. After loading and
releasing several times, used memory is more than 1GB and program is
freezed. I want to know the reason and how to improve it.
Much appreciation to any reply.
Regards,
Su Hu
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Re: [osg-users] how to release loaded model
Hi Ümit
Thanks for you suggestion. There are several scene models in our application
and they are large. So we have to release them when we start a new scene.
Thanks again.
Kind Regards,
Su Hu
2008/7/24 Ümit Uzun [EMAIL PROTECTED]:
Hi Su,
I think you shoul use Switch node to change the model. It is so easy and
useful. Look at the simple example.
2008/7/24 su hu [EMAIL PROTECTED]:
Hi all.
I need to release loaded model and reload other model. I did as follow:
osgViewer::ViewerViewer;
osg::ref_ptrosg::Group root = new osg::Group;
osg::ref_ptrosg::Group ModelRoot = new osg::Group;
osg::ref_ptrosg::Node loadedModel;
...
Viewer.setSceneData(root.get());
root-addChild(ModelRoot.get());
...
//in frame loop
.
switch(CMD)
{
case LOAD_SCENE:
{
loadedModel = osgDB::readNodeFile(CMD_SceneFileName);
if (loadedModel.valid())
{
ModelRoot-addChild(loadedModel.get());
}
break;
}
case RELEASE_SCENE:
{
if(ModelRoot.valid())
{
ModelRoot-removeChildren(0,ModelRoot-getNumChildren());
}
loadedModel.release();
break;
}
}
...
The loadedModel is added to ModelRoot and is not added to any other
group.
Models could be loaded and released. But I found used memory was not
reduced at all after RELEASE_SCENE was executed. After loading and
releasing several times, used memory is more than 1GB and program is
freezed. I want to know the reason and how to improve it.
Much appreciation to any reply.
Regards,
Su Hu
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[osg-users] how to use OpenGL code in osg
Hi all, I have some opengl codes and want to use these codes in osg program. I do it as follow: 1. Add a geode to root scene and define a drawable (derived from osg::Drawable). 2. The drawable is added as child of the geode. OpenGL code is added in DrawCallback of the drawable(in drawImplementation). But it seems that the DrawCallback function is called by osg only once. When I add other node to root scene, the drawable will disappear. Could you please tell me how to add opengl code to osg program?A simple sample will be appreciated. Thanks a lot. Regards, t s ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] how to use OpenGL code in osg
Hi, bob Thanks a lot. Kind Regards, Tiger Su 2008/5/2, Bob Kuehne [EMAIL PROTECTED]: hi su - we cover this (and more!) in the intermediate training course we teach. however, it's a pretty simple answer - the drawImplementation is only executed once, because it's converted to a display list the first time drawn. so, disable display lists on that drawable, and you'll be set! bob On May 2, 2008, at 5:13 AM, su hu wrote: Hi all, I have some opengl codes and want to use these codes in osg program. I do it as follow: 1. Add a geode to root scene and define a drawable (derived from osg::Drawable). 2. The drawable is added as child of the geode. OpenGL code is added in DrawCallback of the drawable(in drawImplementation). But it seems that the DrawCallback function is called by osg only once. When I add other node to root scene, the drawable will disappear. Could you please tell me how to add opengl code to osg program?A simple sample will be appreciated. Thanks a lot. Regards, t s ___ 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
