Hi, I spent the whole day chasing a weird memory leak on my GPU. The following code is part of a (not working well) FBO render solution.
Code: #include <osg/CameraNode> #include <osgViewer/ViewerEventHandlers> void foo() { osg::ref_ptr<osg::Camera> c = new osg::Camera(); c->setCullingMode(osgUtil::CullVisitor::VIEW_FRUSTUM_CULLING); // Disable SMALL_FEATURE_CULLING c->setComputeNearFarMode(osgUtil::CullVisitor::DO_NOT_COMPUTE_NEAR_FAR); c->setClearColor( osg::Vec4(1.0, 1.0, 1.0, 0.0) ); // default white c->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); c->setReferenceFrame(osg::Transform::ABSOLUTE_RF); c->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT); c->setRenderOrder(osg::Camera::PRE_RENDER); osg::ref_ptr<osg::Group> topg = new osg::Group; topg->addChild( c); osgViewer::Viewer viewer; viewer.setSceneData(topg); viewer.realize(); viewer.frame(); } int main(int argc, char* argv[]) { { { foo(); } } return 0; } When I run this with dDebugger I get memory leaks. Call stack: > > osgViewer::GraphicsWindow::makeContextCurrentImplementation - > osg55-osgViewerd.dll > osgViewer::GraphicsWindow::makeContextCurrentImplementation - > osg55-osgViewerd.dll > osgViewer::GraphicsWindow::makeContextCurrentImplementation - > osg55-osgViewerd.dll > osgViewer::GraphicsWindow::makeContextCurrentImplementation - > osg55-osgViewerd.dll > osg::LineSegment::start - osg55-osgd.dll > osgViewer::GraphicsWindow::makeContextCurrentImplementation - > osg55-osgViewerd.dll > osgViewer::GraphicsWindow::makeContextCurrentImplementation - > osg55-osgViewerd.dll > foo - osg_viewer_leak_test.cpp, line 22 > main - osg_viewer_leak_test.cpp, line 31 > __tmainCRTStartup - crtexe.c, line 597 > mainCRTStartup - crtexe.c, line 413 > RegisterWaitForInputIdle - kernel32.dll > These are two render buffers and one FBO when I change the Code: c->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT); from FRAME_BUFFER_OBJECT to FRAME_BUFFER -> Code: ->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER); No leak occurs. Win XP Pro, SP 2, GeForce GTX 285, Driver 191.07 gDebugger 5.2.1 ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=28363#28363 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org