Re: [osg-users] OpenThreads/Atomic currently broken with Xcode 4.3.1 and IOS
Hi, On Thursday 22 March 2012, Ulrich Hertlein wrote: Simpler maybe, but I would expect that to be more expensive in CPU terms than a CPU opcode. Not? Depends on how this is implemented on BSD. May be they implement that today in the header with the exact same gcc/clang intrinsics? Then it should not matter. May be its a real library call, then it's probably more expensive. Greetings Mathias -- Dr. Mathias Fröhlich, science + computing ag, Software Solutions Hagellocher Weg 71-75, D-72070 Tuebingen, Germany Phone: +49 7071 9457-268, Fax: +49 7071 9457-511 -- Vorstandsvorsitzender/Chairman of the board of management: Gerd-Lothar Leonhart Vorstand/Board of Management: Dr. Bernd Finkbeiner, Michael Heinrichs, Dr. Arno Steitz, Dr. Ingrid Zech Vorsitzender des Aufsichtsrats/ Chairman of the Supervisory Board: Philippe Miltin Sitz/Registered Office: Tuebingen Registergericht/Registration Court: Stuttgart Registernummer/Commercial Register No.: HRB 382196 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgShadow PSSM
Hi there Obviously PSSM is good for huge scenes (my case), but the wrong choice for multi threaded rendering. Is there a attempt to make PSSM multithreaded, does anybody have modified it, or what would be the way to go ? Regards Daniel ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgShadow PSSM
Hi Daniel, Currently I'm working on the ViewDependentShadowMap and has already added an initial implementation of PSSM and VSM. I'm using it with my digital city project which must have huge scenes and multi-threaded rendering features. I'd like to submit the changes some time later. :-) Wang Rui 2012/3/23 Daniel Schmid daniel.sch...@swiss-simtec.ch Hi there ** ** Obviously PSSM is good for huge scenes (my case), but the wrong choice for multi threaded rendering. Is there a attempt to make PSSM multithreaded, does anybody have modified it, or what would be the way to go ? ** ** Regards Daniel ** ** ** ** ___ 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] osgShadow PSSM
So you are mixing PSSM and VSM? Sounds interesting. If you have any sample code I could have a look at, I would appreciate... Von: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] Im Auftrag von Wang Rui Gesendet: Freitag, 23. März 2012 09:29 An: OpenSceneGraph Users Betreff: Re: [osg-users] osgShadow PSSM Hi Daniel, Currently I'm working on the ViewDependentShadowMap and has already added an initial implementation of PSSM and VSM. I'm using it with my digital city project which must have huge scenes and multi-threaded rendering features. I'd like to submit the changes some time later. :-) Wang Rui 2012/3/23 Daniel Schmid daniel.sch...@swiss-simtec.chmailto:daniel.sch...@swiss-simtec.ch Hi there Obviously PSSM is good for huge scenes (my case), but the wrong choice for multi threaded rendering. Is there a attempt to make PSSM multithreaded, does anybody have modified it, or what would be the way to go ? Regards Daniel ___ osg-users mailing list osg-users@lists.openscenegraph.orgmailto: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] osgShadow PSSM
I would submit the code this weekend and everyone can have a look at it and make changes to make it better (at present I'm still not satisfied with my own implementation). Wang Rui 2012/3/23 Daniel Schmid daniel.sch...@swiss-simtec.ch So you are mixing PSSM and VSM? Sounds interesting. If you have any sample code I could have a look at, I would appreciate… ** ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgShadow PSSM
Looking forward! Thanks! Von: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] Im Auftrag von Wang Rui Gesendet: Freitag, 23. März 2012 09:41 An: OpenSceneGraph Users Betreff: Re: [osg-users] osgShadow PSSM I would submit the code this weekend and everyone can have a look at it and make changes to make it better (at present I'm still not satisfied with my own implementation). Wang Rui 2012/3/23 Daniel Schmid daniel.sch...@swiss-simtec.chmailto:daniel.sch...@swiss-simtec.ch So you are mixing PSSM and VSM? Sounds interesting. If you have any sample code I could have a look at, I would appreciate... ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Creating an 'outline' effect in osgText?
Hi Preet, On 23 March 2012 03:28, Preet prismatic.proj...@gmail.com wrote: I have a general follow up question about osgText. I'd like to draw the text along a path. I thought a good way to do this would have been to rotate the text character by character. So I'd create an osgText object for each character of text, and position/align them along the path... but this doesn't seem to preserve spacing between characters (this is expected, but I don't really know how to get around it), and the space character itself ( ) as an individual osgText object seems to have a width of zero (calculated with osg::Drawable::getBound()). osgText currently only supports positioning of text along a straight line. There is an experimental TextNode replacement for osgText the is written to allow one to customize the placement of each individual glyph so this would probably be the best bet for you to look at. Have a look for Jeremy Moles TextNode submission in the osg-submissions archive. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] A crash problem while using SharedStateManager in the DatabasePager
Hi Rui, I haven't looked at the relevant code yet, but a DatabaseRequest with a NULL _loadedModel sounds odd, I wouldn't have thought such a request would make it into the merge list. Just checking the _loadedModel.valid() will be sufficient as long as the DatabaseRequest isn't being concurrently accessed at the time. Robert. On 23 March 2012 02:34, Wang Rui wangra...@gmail.com wrote: Hi Robert and all, I've encountered a crash problem while managing and rendering huge scene in OSG. To make it work smoothly, I use both the IncrementalCompileOperation and SharedStateSetManager to help improve the paging process. Both my application soon crashes when the camera is moving over the scene quickly (which means the scene data is also quickly and frequently loaded and unloaded). I debug into it and surprisingly find that the databaseRequest-_loadedModel is sometimes empty in the DatabasePager::addLoadedDataToSceneGraph() and thus causes the issue. I add a determination before using the SharedStateManager to optimize the model and the problem seems disappeared: if (osgDB::Registry::instance()-getSharedStateManager() databaseRequest-_loadedModel.valid()) osgDB::Registry::instance()-getSharedStateManager()-share(databaseRequest-_loadedModel.get()); I suggest make such changes in the trunk, too, so we won't meet the same crash problem again. But it in fact doesn't find the truth: when and how a request in the _dataToMergeList list is changed and the loaded model pointer is made invalid? I'm just curious about the reason why the _loadedModel is reset unexpectedly. Is there any other possibilities? Regards, Wang Rui ___ 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] Creating an 'outline' effect in osgText?
Robert Osfield writes: Hi Preet, On 23 March 2012 03:28, Preet prismatic.proj...@gmail.com wrote: I have a general follow up question about osgText. I'd like to draw the text along a path. I thought a good way to do this would have been to rotate the text character by character. So I'd create an osgText object for each character of text, and position/align them along the path... but this doesn't seem to preserve spacing between characters (this is expected, but I don't really know how to get around it), and the space character itself ( ) as an individual osgText object seems to have a width of zero (calculated with osg::Drawable::getBound()). osgText currently only supports positioning of text along a straight line. There is an experimental TextNode replacement for osgText the is written to allow one to customize the placement of each individual glyph so this would probably be the best bet for you to look at. Have a look for Jeremy Moles TextNode submission in the osg-submissions archive. If it helps, it is called osgPango (http://code.google.com/p/osgpango/). -- Alberto ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgShadow PSSM light source issue
I have an issue with PSSM. The light source in my scene is not taken into account properly (sun). It calculates shadows like if sun as in perfect orbit. All other shadow implementations work correctly, and changes in light position are calculated correctly, but PSSM is stuck somehow. Does anybody know this problem ? Regards Daniel ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Creating an 'outline' effect in osgText?
On 23 March 2012 09:27, Alberto Luaces alua...@udc.es wrote: If it helps, it is called osgPango (http://code.google.com/p/osgpango/). osgPango is not osgText::TextNode I was referring too, rather it's a separate NodeKit for advance text rendering but come with extra external depdencies. The TextNode implementation is something I original route the basics for, then Jeremy enhanced it to complete far more of it's functionality. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG + Qt + threading.
Hi,
I'm following this example:
http://doc-snapshot.qt-project.org/4.8/demos-glhypnotizer-main-cpp.html
but I fail to refresh the window... is blank.
This is my code on glPainter:
Code:
GLPainter::GLPainter(ViewerQT *widget)
: glWidget(widget)
, doRendering(true)
{
}
void GLPainter::start()
{
glWidget-AdapterWidget::makeCurrent();
QTimer timer;
connect(timer, SIGNAL(timeout()), glWidget, SLOT(updateGL()));
timer.start(10);
startTimer(20);
}
void GLPainter::stop()
{
QMutexLocker locker(mutex);
doRendering = false;
}
void GLPainter::resizeViewport(const QSize size)
{
QMutexLocker locker(mutex);
viewportWidth = size.width();
viewportHeight = size.height();
}
void GLPainter::timerEvent(QTimerEvent *event)
{
QMutexLocker locker(mutex);
if (!doRendering) {
killTimer(event-timerId());
QThread::currentThread()-quit();
return;
}
// glWidget-updateFrame();
}
I initialize the GLWidget like the example and the thread go well but when I
call glWidget-frame() dont refresh the osg and if I put a connection between
timer and updateGL() fails to call paintGL().
What am I doing wrong?
Thank you!
Cheers,
Aitor
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=46554#46554
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[osg-users] osgShadow culling faces
Hi there I have some objects whose shadow looks ugly when the front faces are culled. For those objects, I would like to have front and back faces taken into account for shadow rendering, for others I can go with backfaces. Unfortunately, the face fulling is a property of the camera. How can I handle it on a per node basis ? Regards Daniel ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgShadow culling faces
Hi, Danielyou can set correct osg::CullFace attribute to stateset of graph branches where you need it Cheers, Sergey23.03.2012, 17:10, "Daniel Schmid" daniel.sch...@swiss-simtec.ch:Hi there I have some objects whose shadow looks ugly when the front faces are culled. For those objects, I would like to have front and back faces taken into account for shadow rendering, for others I can go with backfaces. Unfortunately, the face fulling is a property of the camera. How can I handle it on a per node basis ? RegardsDaniel ___osg-users mailing listosg-users@lists.openscenegraph.orghttp://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] 2nd Camera - disable CameraManipulator
Hi,
Thanks chris.
the needed lines was:
Code:
camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
The problem for some reason is I cant move the camera.
which I can't understand.
Heres a class to create my portal, (quite a handy class if you need one?)
Code:
class Portal
{
public:
Portal()
{
// create objects
subgraph = new osg::Group();
trans = new osg::MatrixTransform();
node = new osg::Group;
}
~Portal() {}
void SetSize(float width, float height)
{
// set bounding box size
bb.xMin() = -width / 2;
bb.xMax() = width / 2;
bb.yMin() = 0;
bb.yMax() = 0;
bb.zMin() = -height / 2;
bb.zMax() = height / 2;
}
void SetMatrix(osg::Matrix mat)
{
// set matrix
trans-setMatrix(mat);
}
void SetSubGraph(osg::Group* subgraph)
{
// setsubgraph
this-subgraph = subgraph;
}
osg::MatrixTransform* create(const osg::Vec4 clearColour)
{
trans-addChild(node);
// create texture
unsigned int tex_width = 800;
unsigned int tex_height = 600;
float portalWidth = bb.xMax()- bb.xMin();
float portalHeight = bb.zMax()- bb.zMin();
ratio = (600. / 800.) / (portalHeight / portalWidth);
texture = new osg::Texture2D;
texture-setTextureSize(tex_width, tex_height);
texture-setInternalFormat(GL_RGB);
texture-setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
texture-setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
// set up the render to texture camera.
{
camera = new osg::Camera;
// set clear the color and depth buffer
camera-setClearColor(clearColour);
camera-setClearMask(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
camera-setProjectionMatrix(osg::Matrixd::identity());
camera-setViewMatrix(osg::Matrixd::identity());
// set viewport
camera-setViewport(0,0,tex_width,tex_height);
camera-setAllowEventFocus(false);
// set camera lookat (NOT WORKING)
camera-setViewMatrixAsLookAt( osg::Vec3( 0., -200., 0.
), osg::Vec3( 0., 0., 0. ), osg::Vec3( 0., 0., 1. ));
// set the camera to render before the main camera.
camera-setRenderOrder(osg::Camera::PRE_RENDER);
// tell the camera to use OpenGL frame buffer object
where supported.
camera-setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT);
// attach the texture and use it as the color buffer.
camera-attach(osg::Camera::COLOR_BUFFER, texture);
// add subgraph to render
camera-addChild(subgraph);
// add camera
node-addChild(camera);
}
{
// left hand side of bounding box.
osg::Vec3 top_left(bb.xMin(),bb.yMin(),bb.zMax());
osg::Vec3 bottom_left(bb.xMin(),bb.yMin(),bb.zMin());
osg::Vec3 bottom_right(bb.xMax(),bb.yMax(),bb.zMin());
osg::Vec3 top_right(bb.xMax(),bb.yMax(),bb.zMax());
// create the geometry for the wall.
geom = new osg::Geometry;
// create vertices
osg::Vec3Array* vertices = new osg::Vec3Array(4);
(*vertices)[0] = top_left;
(*vertices)[1] = bottom_left;
(*vertices)[2] = bottom_right;
(*vertices)[3] = top_right;
geom-setVertexArray(vertices);
// create texchoords
osg::Vec2Array* texcoords = new osg::Vec2Array(4);
(*texcoords)[0].set((1 - ratio) / 2,1.0f);
(*texcoords)[1].set((1 - ratio) / 2,0.0f);
(*texcoords)[2].set(1 - ((1 - ratio) / 2),0.0f);
(*texcoords)[3].set(1 - ((1 - ratio) / 2),1.0f);
geom-setTexCoordArray(0,texcoords);
// create normals
osg::Vec3Array* normals = new osg::Vec3Array(1);
[osg-users] General multithreading question
Hi, Out of curiosity, is OSG's performance sensitive to accesses to threads spawned by it's process? What I mean is, my application runs with an extra thread that, functionally does nothing. At runtime, the application's update traversal time is stable at 0.09. But, if I access that thread *once* (a vector gets updated, but it has no effect on the code in the run() function), my update traversal time gets erratic and varies from 0.20 to 0.60... The function that gets called locks a mutex and changes the value of a variable, but again, the variable isn't even accessed or used by the other thread. I suspect it has something to do with the call to OpenThreads::ScopedLock... Anyway, the performance hit is pretty minor overall, but it concerns me. Thanks, Joel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=46569#46569 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
