[osg-users] setUseVertexAttributeAliasing and frame buffer objects not working together
Hi all,
I'm trying to implement a deferred shading model based on some papers around
the web but I'm running into issues when using both
setUseVertexAttributeAliasing and rendering to a texture using FBO. I can
render to an FBO fine with attribute aliasing off, and attribute aliasing
appears to work fine with my shaders when not rendering to any FBOs, but using
both at the same time causes my FBO textures to be either black or just an RGB
gradient. Basically I'm doing this:
Code:
ref_ptr pOsgViewer = new osgViewer::Viewer();
pOsgViewer->setUpViewOnSingleScreen(1);
pOsgViewer->setCameraManipulator(new osgGA::OrbitManipulator());
pOsgViewer->setThreadingModel(osgViewer::ViewerBase::AutomaticSelection);
pOsgViewer->realize();
pOsgViewer->getCamera()->getGraphicsContext()->getState()->setUseModelViewAndProjectionUniforms(true);
pOsgViewer->getCamera()->getGraphicsContext()->getState()-->setUseVertexAttributeAliasing(true);
std::string filename = "blah.3DS";
ref_ptr pModel = osgDB::readNodeFile(filename);
unsigned int textureWidth = 1024;
unsigned int textureHeight = 1024;
// Initialize the GBuffer
// Create osg::Texture2D objects to store the image data and map them to
GBuffer types
ref_ptr pNormalTex = new Texture2D();
pNormalTex->setTextureSize(textureWidth, textureHeight);
pNormalTex->setInternalFormat(GL_RGBA);
pNormalTex->setFilter(Texture2D::MIN_FILTER, Texture2D::LINEAR);
pNormalTex->setFilter(Texture2D::MAG_FILTER, Texture2D::LINEAR);
ref_ptr pNormalCam = new Camera();
pNormalCam->setClearColor(Vec4(1.0, 1.0, 1.0, 1.0));
pNormalCam->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
pNormalCam->setGraphicsContext(pOsgViewer->getCamera()->getGraphicsContext());
pNormalCam->setRenderTargetImplementation(Camera::FRAME_BUFFER_OBJECT);
pNormalCam->setRenderOrder(Camera::PRE_RENDER);
pNormalCam->setViewport(0, 0, pNormalTex->getTextureWidth(),
pNormalTex->getTextureHeight());
pNormalCam->attach(Camera::COLOR_BUFFER, pNormalTex.get(), 0, 0, false);
attachShader(pNormalCam, GBUFFER_NORMAL);
pNormalCam->addChild(pModel.get());
ref_ptr pGroup = new Group();
pGroup->addChild(pNormalCam.get());
pGroup->addChild(pModel.get());
pOsgViewer->setSceneData(pGroup.get());
pOsgViewer->run();
attachShader() just looks like this:
Code:
bool ShadedScene::attachShader(Camera* pCam, GBufferTypes programType)
{
if (pCam == NULL)
{
return false;
}
ref_ptr pVertShader = new Shader(Shader::VERTEX);
ref_ptr pFragShader = new Shader(Shader::FRAGMENT);
ref_ptr pShaderProgram = new Program();
pShaderProgram->addShader(pVertShader.get());
pShaderProgram->addShader(pFragShader.get());
StateSet* pCamSs = pCam->getOrCreateStateSet();
if (pCamSs == NULL)
{
return false;
}
pCamSs->setAttributeAndModes(pShaderProgram.get(), StateAttribute::ON);
switch (programType)
{
case GBUFFER_NORMAL:
pVertShader->setShaderSource(normalVertShader);
pFragShader->setShaderSource(normalFragShader);
break;
default:
break;
}
return true;
}
My shaders:
Code:
static std::string normalVertShader = "uniform mat4
osg_ModelViewProjectionMatrix;\n"
"uniform mat3 osg_NormalMatrix;\n"
"varying vec3 vVaryingNormal;\n"
"void main(void)\n"
"{\n"
" vVaryingNormal = osg_NormalMatrix * gl_Normal;\n"
" gl_Position = osg_ModelViewProjectionMatrix * gl_Vertex;\n"
"}\n";
static std::string normalFragShader =
"#version 120\n"
"varying vec3 vVaryingNormal;\n"
"void main(void)\n"
"{\n"
" gl_FragColor.rgb = vVaryingNormal;\n"
"}\n";
I'm using OSG trunk rev13134 for what I'm working on but I also had similar
issues back when using 3.0.1. I'm not sure if I'm missing something or what.
Some of this stuff is doable without attribute aliasing but it's more
complicated - i.e. accessing the texture coordinates for a model doesn't seem
particularly straightforward and I've not seen a simple way to do it when
loading in a 3D model. Just curious if I'm missing something glaringly obvious.
What I posted is a stripped-down version of what I'm working on but it covers
everything I'm actually doing in relation to OSG.
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=50649#50649
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Fail to install due to osg80-osgDBd.dll is missing
Hi, I am new to OSG as well as VC++ programming, I just follow the instruction for how to install from pre-compiled binaries on my Windows 7. I set the path, System Variable, and all other dependencies when I run VC++. But it just jump out the error.. > > The program can't start because osg80-osgDBd.dll is missing from your > computer. Try reinstalling the program to fix that problem. and its also display this at output > > 'OSGDefaultProject.exe': Loaded 'C:\Users\Kevin\Documents\Visual Studio > 2008\Projects\OSGDefaultProject\Debug\OSGDefaultProject.exe', Symbols loaded. > 'OSGDefaultProject.exe': Loaded 'C:\Windows\SysWOW64\ntdll.dll' > 'OSGDefaultProject.exe': Loaded 'C:\Windows\SysWOW64\kernel32.dll' > 'OSGDefaultProject.exe': Loaded 'C:\Windows\SysWOW64\KernelBase.dll' > The program '[3120] OSGDefaultProject.exe: Native' has exited with code > -1073741515 (0xc135). I notice I wasn't able to see "osgversion" at cmd, it responed as > 'osgversion' is not recognized as an internal or external command, operable > program or batch file but I was able to see all the paht by enter "echo %OSG_ROOT%" and in cmd, and all the path are set base on instruction. OSG_ROOT C:\Program Files\OpenSceneGraph-3.0.1 OSG_BIN_PATH %OSG_ROOT%\bin OSG_INCLUDE_PATH %OSG_ROOT%\include OSG_LIB_PATH %OSG_ROOT%\lib OSG_SAMPLES_PATH %OSG_ROOT%\share\OpenSceneGraph\bin OSG_FILE_PATH %OSG_ROOT%\samples\OpenSceneGraph-Data-3.0.0 also I add these two in the Path %OSG_BIN_PATH%;%OSG_SAMPLES_PATH%; but in the end its just not work, I search on the osg form and try all the solutions, but I still not able to solve it, can anyone give me some suggestion. Thank you very much. ... Thank you! Cheers, Kevin -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50638#50638 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] I want to animate a shape.
Hi,
I made a rectangle and want to animate it from (0, 0, 0) to (n, 0, 0) 2pixel
per a sec.
I found an update code and I call the method in here.
while(!viewer.done())
{
viewer.frame();
update(second);
}
but i don't know how to calculate it to meet the issue.
here's a part of update code.
void update(float dt)
{
myTimer += dt;
Vec3d currentPosition = transform[0]->getPosition();
Vec3d *newPosition;
newPosition = new Vec3d(currentPosition.x() + dt * ,
currentPosition.y(), currentPosition.z());
object->setPosition(Vec3(newPosition->x(), newPosition->y(),
newPosition->z()));
}
I guess this line (newPosition = new Vec3d(currentPosition.x() + dt * ,
currentPosition.y(), currentPosition.z());) is to animate the shape.
currentPosition.x() + dt * ??? <-- how ?
Sorry about posting very basic thing which is very hard to me. :(
anyone have any good link for me to understand the logic or can explan the
process?
Thank you!
Cheers,
Eungil,
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=50623#50623
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to change the text with osg::Text?
It works very well. :) Thank you! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50622#50622 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG-3.0.0 Windows Prebuilt Installer
Wow, an answer directly from the writer of the book ?! :) Thank you Rui, thats understandable, iam downloading the binaries now. All the best ! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50616#50616 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [forum] Problem when nesting osgFX::Outline effects
Hi, I am trying to add an osgFX::Outline effect (as grand child) to another osgFx::Outline effect to have an outlined node of which child is also outlined. But I am getting a weird result: The child is displayed in fill mode and line mode (wireframe over fill mode rendering). I kinda understand what the problem is but I don't have a solution to that. Do you know if there is any solution to this bug? Thank you! Cheers, celandre -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50615#50615 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Using the notification API with multi-threading - heap corruption errors
Hi, What is the current status of this issue? Currently I'm working with openthreads and learn a lot, but as the threadstartedreported, the application crashes more or less frequently if I use the notify macro heavily. Thank you! Cheers, Torben -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50683#50683 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] nVidia bug with multiple windows
Hi Baker. Perhaps your issue is the same that i fixed and submitted 9/27/2012. http://forum.openscenegraph.org/viewtopic.php?t=11124 "We had this problem which shows up with nVidia's latest Quadro driver, 305.93 - and older drivers when the nVidia's setting "Thread Optimization" was turned on, running Windows 7. The symptom, is that after creating a first view and using it, and then creating a second view, the first view will never render anything but black. What happens is this: A view is created, and then the viewers thread is created and runs. The setReleaseContextAtEndOfFrameHint is true. To create a second view, the viewer is setDone(true), and we wait for the thread exit. At this point, inside the ViewerBase::RenderingTraversals code, there are places where it reads "if(_done) return;" The problem, is that it won't reach the code that will releaseContext(). Apparently, this driver won't let any other thread to makeCurrent(), if another thread (dead or not) has ownership. So when the Viewers is re-started, the first view won't be able to use the gc. " -- Leigh -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50682#50682 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgFX::Registry::Proxy proxy
Hello. What osgFX::Registry::Proxy proxy(new MyEffect); does ? Couldnt find any reference anywhere. i see it is used in predefined Effects like Outline. thnx. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] question about Optimizer and FLATTEN_STATIC_TRANSFORMS
On 10/19/2012 09:28 AM, Michael Schanne wrote: Hi, I have a model that I converted from an .stl file to .osg. I wanted to apply a scaling to the model, so I added a MatrixTransform with a scaling matrix above the model's root node. For maximum efficiency I wanted to apply the transform directly to the vertices, so I tried to run the .osg file through osgconv a second time, with the OSG_OPTIMIZER env variable set to FLATTEN_STATIC_TRANSFORMS. However, the new file was identical to the previous file, with the parent MatrixTransform still in place. I set the DataVariance of the transform to STATIC, and it had no effect. Is there something else that could interfere with the Optimizer flattening the transform, or am I expecting FLATTEN_STATIC_TRANSFORMS to do something that it's not intended to do? Hi, Michael, The structure of the scene itself can sometimes prevent the transform from being flattened away. What happens if you try FLATTEN_STATIC_TRANSFORMS_DUPLICATING_SHARED_SUBGRAPHS (sometimes, you just need a bigger hammer :-) ). --"J" ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] vsync under qt
Hi Roman, are you using osgQt classes? Why are you saying vsync is not working? Gianni -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50679#50679 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] copying contents of osg::Group to rendered Group
Hi all. I have two osg::Groups, one which is being rendered in my viewer and another which is used as a buffer that collects geodes as they are created. Periodically, I want to flush the contents of my root group and copy over all the contents in the buffer. I have tried several methods of copying the contents of the buffer group to the root group, but I never actually see the new contents appear in my view. Specifically I have tried looping over all children in the buffer and calling root->addChild on each of these. I have also tried assigning the root to a deep copy clone of the buffer. In both cases I can verify that the root contains the data in the buffer using getNumChildren(), but they never show up. Does anyone know why this would be? Or, am I just going about this the wrong way? Thanks, S -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50678#50678 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] vsync under qt
Hi, tried to set under qt window traits->vsync=true; but in doesn't work How can I enable vsync? Thank you! Cheers, Roman -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50677#50677 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] question about Optimizer and FLATTEN_STATIC_TRANSFORMS
Hi, I have a model that I converted from an .stl file to .osg. I wanted to apply a scaling to the model, so I added a MatrixTransform with a scaling matrix above the model's root node. For maximum efficiency I wanted to apply the transform directly to the vertices, so I tried to run the .osg file through osgconv a second time, with the OSG_OPTIMIZER env variable set to FLATTEN_STATIC_TRANSFORMS. However, the new file was identical to the previous file, with the parent MatrixTransform still in place. I set the DataVariance of the transform to STATIC, and it had no effect. Is there something else that could interfere with the Optimizer flattening the transform, or am I expecting FLATTEN_STATIC_TRANSFORMS to do something that it's not intended to do? ... Thank you! Cheers, Michael -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50676#50676 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Can we add Viewer::setSkipCloseWindowEvent to prevent Window from being closed upon receiving CLOSE_WINDOW?
Hi. I've looked at the code (OSG 3.0.1) of Viewer::eventTraversal and noticed that it checks for CLOSE_WINDOW event and closes the window, so there's no way to prevent the window from closing. I've googled for window close prevention with no luck, too. Can we add something like Viewer::setSkipCloseWindowEvent to OSG? Thanks. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Problem with picking a manipulator in a HUD
Hi all,
I am trying to get a Dragger on my HUD display, but I am not able to
manipulate it at all. If I add it the identical dragger to the normal
scene, it works as expected. Any insight in this is appreciated as I have
reached the end of trying to traverse the scene trying to gain
understanding in this matter.
- Kristofer
--
Kristofer Tingdahl, Ph. D.
dGB Earth Sciences
/*+
* (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
* AUTHOR : Kristofer Tingdahl
* DATE : May 2000
-*/
#include
#include
#include
#include
#include
#include
#include
int main( int argc, char** argv )
{
QApplication app(argc, argv);
osgQt::initQtWindowingSystem();
osg::Group* sceneroot = new osg::Group;
osg::Camera* hudcamera = new osg::Camera;
sceneroot->addChild( hudcamera );
hudcamera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
hudcamera->setViewMatrix(osg::Matrix::identity());
hudcamera->setClearMask(GL_DEPTH_BUFFER_BIT);
hudcamera->setRenderOrder(osg::Camera::POST_RENDER);
hudcamera->setAllowEventFocus(false);
hudcamera->setName("HUD Camera" );
osg::Matrix mat;
mat.makeTranslate( 200, 200, -200 );
mat.preMult( osg::Matrix::scale( 200, 200, 200 ) );
osgManipulator::TabBoxDragger* tbd = new osgManipulator::TabBoxDragger;
hudcamera->addChild( tbd );
tbd->setupDefaultGeometry();
tbd->setMatrix( mat );
tbd->setHandleEvents( true );
osg::Geode* geode = new osg::Geode;
geode->addDrawable( new osg::ShapeDrawable(new osg::Box) );
sceneroot->addChild( geode );
osg::ref_ptr viewer = new osgViewer::Viewer;
viewer->setSceneData( sceneroot );
viewer->setCameraManipulator( new osgGA::TrackballManipulator );
osgQt::setViewer( viewer.get() );
osgQt::GLWidget* glw = new osgQt::GLWidget;
osgQt::GraphicsWindowQt* graphicswin = new osgQt::GraphicsWindowQt( glw );
hudcamera->setProjectionMatrix(osg::Matrix::ortho2D(0,glw->width(),0,glw->height()));
viewer->getCamera()->setViewport( new osg::Viewport(0, 0, glw->width(), glw->height() ) );
viewer->getCamera()->setGraphicsContext( graphicswin );
glw->show();
return app.exec();
}
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgQt::GraphicsWindowQt parent parameter
Hi, there may be a bug in osgQt::GraphicsWindowQt(osg::GraphicsContext::Traits* traits, QWidget* parent = NULL, const QGLWidget* shareWidget = NULL, Qt::WindowFlags f = 0) constructor. Anyway I solved as follows: basically using the other GraphicsWindowQt constructor available and creating a GLWidget from my own (so that I can also use the forwardKeyEvents parameter otherwise impossible to set). Here is the code: Code: QGLFormat format = osgQt::GraphicsWindowQt::traits2qglFormat(traits); osgQt::GLWidget* glwidget = new osgQt::GLWidget(format, this, 0, 0, true); camera->setGraphicsContext(new osgQt::GraphicsWindowQt(glwidget)); Gianni -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50673#50673 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgFX::Outline implementation for OpenGL ES?
Hi, osgFX wont help in this case, but I think MatrixTransform or PositionAttitudeTranform (preffered) can do scaling, or second camera, at closer z position. Cheers, Filip -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50672#50672 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] about the cull mechanism in osg
hi xiexing: osg offer the frustum culling and you can set the Culling Mode , also if you want to realize customer culling function please look the osgUtil::CullVisitor Liu zhiyu 2012/10/19 wh_xiexing > ** > dear friends: > > i am newbie . my question is , i have a group which contains a > lot a gode. in order to speed the rendering . i don't know whether i need > to write a cull callback . or do nothing and let the osg system do the > culling work instead . does osg automatically traverse the group and cull > the node which lay out the frustum ??? > > > Shawl > > ___ > 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
