Hi Brian, The rgb loader is automatically loaded by osgDB when it loads cow.osg as the model contains an reference to an external image that the .osg can't load itself - it needs the rgb plugin to do this.
This stuff really shouldn't hang, its been in place in the OSG for the last 7 years with very few changes, osgDB/.osg/.rgb are all well established, tested and debugged and are known to work on a wide range of platforms. If things are crashing then it may well be an indication that the compiling/libs that the OSG is relying upon is the weak bit in the chain. The OpenGL error suggests that the OSG is trying to use an extension of state that the OpenGL driver can't handle. The OSG does do extension checking, and in the case of cow.osg there are no advanced bit of OpenGL being exercised so its surprising that the error would come up. Again its an area of the OSG so well used across so many platforms I wouldn't expect to find bugs on the OSG side either. To keep simply I'd recommend just running the osgviewer with --SingleThreaded to make sure that it doesn't try to go multi-threaded as just a way of avoiding one possible complication in set up and execution. You can also use the OSG_THREADING env var set to SingleThreaded to force single threading too. Finally with testing the reading and writing of files in isolation try : osgconv cow.osg test.osg Robert. On 5/30/07, Brian Keener <[EMAIL PROTECTED]> wrote:
I guess I don't fully understand the operation of osgviewer. I got to experimenting with a theory on the hangs on Cygwin and decided to try several different type files since I had noticed in the past when cygosgdb_rgb.dll was used programs closed normally but using osgviewer with cow.osg caused a hang. Because of this I decided to try osgviewer with a file type other than an osg. When I try something simple like osgviewer ./sw.jpg and sw.jpg is in my current directory I get a "No data loaded" like the following: [EMAIL PROTECTED] /usr/tmp $ osgviewer ./sw.jpg CullSettings::readEnvironmentalVariables() DriveManipulator::_height set to ==1.5 CullSettings::readEnvironmentalVariables() CullSettings::readEnvironmentalVariables() itr='/usr/local/bin' FindFileInPath() : trying /usr/local/bin/cygosgdb_jpeg.dll ... FindFileInPath() : USING /usr/local/bin/cygosgdb_jpeg.dll Opened DynamicLibrary cygosgdb_jpeg.dll osgviewer: No data loaded Viewer::~Viewer():: start destructor getThreads = 0 Viewer::~Viewer() end destrcutor getThreads = 0 Destructing osg::View Done destructing osg::View Closing DynamicLibrary cygosgdb_jpeg.dll [EMAIL PROTECTED] /usr/tmp $ but if I use the option --image before the file name the program executes and display and terminates normally. OpenGL extension 'GL_EXT_secondary_color' is supported. OpenGL extension 'GL_EXT_fog_coord' is supported. Viewer::~Viewer():: start destructor getThreads = 0 close(1)0x100baa00 Releasing GL objects for Camera=0x100b5d00 _state=0x100bae50 Closing still viable window 0 _state->getContextID()=0 Doing Flush Done Flush 100 GraphicsContext::decrementContextIDUsageCount(0) to 0 Viewer::~Viewer() end destrcutor getThreads = 0 Destructing osg::View Done destructing osg::View close(1)0x100baa00 close(0)0x100baa00 Closing DynamicLibrary cygosgdb_jpeg.dll [EMAIL PROTECTED] /usr/tmp $ I tried this with .jpg and .gif and .rgb and they all ran and completed normally but for some reason osgviewer for the cow.osg file 1) does not require the --image before the image name and 2) reports "No data loaded" if you do use the --image and 3) the application does not terminate but hangs on exit if it displayys an image (terminates normal if it doesn't load an image) and I have to kill the process with Windows Task Manager: Warning: detected OpenGL error 'invalid enumerant' after RenderBin::draw(,) Viewer::~Viewer():: start destructor getThreads = 0 close(1)0x100cbb68 Releasing GL objects for Camera=0x100b5d00 _state=0x100c9830 Closing still viable window 0 _state->getContextID()=0 Doing Flush Done Flush 100 GraphicsContext::decrementContextIDUsageCount(0) to 0 Viewer::~Viewer() end destrcutor getThreads = 0 Destructing osg::View Done destructing osg::View close(1)0x100cbb68 close(0)0x100cbb68 Closing DynamicLibrary cygosgdb_osg.dll Any thoughts. bk _______________________________________________ osg-users mailing list osg-users@openscenegraph.net http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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