Hi,
I am trying to run osgWindows example on Debian 6.0.7 (squeeze) with OSG
version 3.0.1. I am using Eclipse 3.7 (indigo) as IDE. The problem is that this
example runs fine on windows but its crashing on linux for me. Many times it
terminates by itself and other times it gives following callstack
Code:
std::string::find() at 0x7ffff4236d18
osg::isGLExtensionOrVersionSupported() at GLExtensions.cpp:227 0x7ffff7942444
osg::isGLExtensionSupported() at GLExtensions.cpp:90 0x7ffff7941aa3
osg::FragmentProgram::Extensions::setupGLExtensions() at
FragmentProgram.cpp:263 0x7ffff78e122e
Extensions() at FragmentProgram.cpp:234 0x7ffff78e1021
osg::FragmentProgram::getExtensions() at FragmentProgram.cpp:223 0x7ffff78e0ee3
osg::FragmentProgram::flushDeletedFragmentProgramObjects() at
FragmentProgram.cpp:59 0x7ffff78dfc48
osg::flushDeletedGLObjects() at GLObjects.cpp:31 0x7ffff794c2cf
osgUtil::SceneView::flushDeletedGLObjects() at SceneView.cpp:1,038
0x7ffff7240c0b
osgUtil::SceneView::draw() at SceneView.cpp:1,064 0x7ffff7240d8e
osgViewer::Renderer::draw() at Renderer.cpp:725 0x7ffff63f18d2
osgViewer::Renderer::operator() at Renderer.cpp:892 0x7ffff63f2b8a
osg::GraphicsContext::runOperations() at GraphicsContext.cpp:756 0x7ffff79553bf
osg::RunOperations::operator() at GraphicsThread.cpp:137 0x7ffff795fa9c
osg::GraphicsOperation::operator() at GraphicsThread.cpp:53 0x7ffff795f38a
osg::OperationThread::run() at OperationThread.cpp:426 0x7ffff79c676d
osg::GraphicsThread::run() at GraphicsThread.cpp:38 0x7ffff795f2f0
OpenThreads::ThreadPrivateActions::StartThread() at PThread.cpp:181
0x7ffff5b96806
start_thread() at pthread_create.c:300 0x7ffff377f8ca
clone() at clone.S:112 0x7ffff3a64b6d
0x0
I checked with single slave cameras. It works fine with both individual slave
cameras but when I un-comment both cameras it gives me crash. Here is code for
reference
Code:
#include <osgDB/ReadFile>
#include <osgUtil/Optimizer>
#include <osgViewer/Viewer>
#include <iostream>
int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// read the scene from the list of file specified commandline args.
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
// if not loaded assume no arguments passed in, try use default mode instead.
if (!loadedModel) loadedModel = osgDB::readNodeFile("cow.osgt");
// if no model has been successfully loaded report failure.
if (!loadedModel)
{
std::cout << arguments.getApplicationName() <<": No data loaded" << std::endl;
return 1;
}
// construct the viewer.
osgViewer::Viewer viewer;
int xoffset = 40;
int yoffset = 40;
// left window + left slave camera
{
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new
osg::GraphicsContext::Traits;
traits->x = xoffset + 0;
traits->y = yoffset + 0;
traits->width = 600;
traits->height = 480;
traits->windowDecoration = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
osg::ref_ptr<osg::GraphicsContext> gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(0,0, traits->width, traits->height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
// add this slave camera to the viewer, with a shift left of the projection
matrix
viewer.addSlave(camera.get(), osg::Matrixd::translate(1.0,0.0,0.0),
osg::Matrixd());
}
// right window + right slave camera
{
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new
osg::GraphicsContext::Traits;
traits->x = xoffset + 600;
traits->y = yoffset + 0;
traits->width = 600;
traits->height = 480;
traits->windowDecoration = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
osg::ref_ptr<osg::GraphicsContext> gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(0,0, traits->width, traits->height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
// add this slave camera to the viewer, with a shift right of the projection
matrix
viewer.addSlave(camera.get(), osg::Matrixd::translate(-1.0,0.0,0.0),
osg::Matrixd());
}
// optimize the scene graph, remove rendundent nodes and state etc.
osgUtil::Optimizer optimizer;
optimizer.optimize(loadedModel.get());
// set the scene to render
viewer.setSceneData(loadedModel.get());
return viewer.run();
}
...
Thank you!
Cheers,
Abhishek
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=54186#54186
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