Hi,
I have got some troubles with a RTT camera and HUD camera.
My scene seems like :
_rootView
/ \
/ \
RTTCam _rootParent
\ /
root
/ \
HUDs scene
I try to take screenshots with a RTT camera, so I use the event "KEYDOWN" of a
"GUIEventHandler" to handle the beginning of the screenshot (create rtt camera
etc.) and "FRAME" to wait a frame and register the screenshot. It works without
HUD, but when I had HUD I have 2 diffrents problem :
-First : The screenshot is taken but without the HUD, Why ?
-Second : The program freeze (only when the CompositeViewer isn't single
threaded) ! The main thread and the other are lock in cooperativeWait !
Here is the screenshot handler code :
.h
Code:
typedef struct s_rttCameraImage
{
osg::ref_ptr<osg::Camera> _rttCamera;
osg::ref_ptr<osg::Image> _outputImage;
} rttCameraImage;
class SnapImageHandler : public osgGA::GUIEventHandler
{
private:
int _keyImage;//key
use to take a screenshot
int _keyVideo;//key
use to start/stop record a video
rttCameraImage *_rtt;//rtt camera and image
bool _takeSCEnd;
//screenshot register flag
VideoRecorder* _vr;
PluginVideo* _plugin;
SnapImage* _si;
//Create the image and the rtt camera and attach it to the scene
void screenShotInit();
//Save the image on the disk and remove the rtt camera to the scene
void screenShotRecord();
public:
SnapImageHandler(int keyImage, int keyVideo, VideoRecorder* video,
PluginVideo * plugin, SnapImage *si) :
_keyImage(keyImage),
_keyVideo(keyVideo),
_vr(video),
_plugin(plugin),
_si(si),
_takeSCEnd(false),
_rtt(0)
{}
~SnapImageHandler(void){}
//overload method
virtual bool handle(const
osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&);
};
.cpp
Code:
void SnapImageHandler::screenShotInit()
{
_rtt = new rttCameraImage;
_rtt->_outputImage = new osg::Image;
if (_vr->getFilenameImage().find(".jpg") != std::string::npos ||
_vr->getFilenameImage().find(".jpeg") != std::string::npos)
_rtt->_outputImage->allocateImage(_vr->getOutputImageSize().x(),
_vr->getOutputImageSize().y(), 1, GL_RGB, GL_UNSIGNED_BYTE);
else
_rtt->_outputImage->allocateImage(_vr->getOutputImageSize().x(),
_vr->getOutputImageSize().y(), 1, GL_RGBA, GL_UNSIGNED_BYTE);
_rtt->_rttCamera = new osg::Camera;
_rtt->_rttCamera->setViewMatrix(_vr->getCurrentViewMatrix());
_rtt->_rttCamera->setProjectionMatrix(_vr->getCurrentProjectionMatrix());
_rtt->_rttCamera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
_rtt->_rttCamera->setClearMask(GL_COLOR_BUFFER_BIT |
GL_DEPTH_BUFFER_BIT);
_rtt->_rttCamera->setViewport(0, 0, _vr->getOutputImageSize().x(),
_vr->getOutputImageSize().y());
_rtt->_rttCamera->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT);
_rtt->_rttCamera->setRenderOrder(osg::Camera::PRE_RENDER);
_rtt->_rttCamera->setRenderingCache( 0 );
_rtt->_rttCamera->setCullingActive(false);
_rtt->_rttCamera->attach( osg::Camera::COLOR_BUFFER,
_rtt->_outputImage.get(), 0, 0);
_rtt->_rttCamera->addChild(_vr->getSceneNode());
_vr->getRootNode()->addChild(_rtt->_rttCamera);
_vr->takeScreenShot(false);
_takeSCEnd = true;
}
void SnapImageHandler::screenShotRecord()
{
_vr->saveImage(_rtt->_outputImage.get(), 1);
_vr->getRootNode()->removeChild(_rtt->_rttCamera.get());
_rtt->_outputImage->releaseGLObjects();
_rtt->_rttCamera->detach(osg::Camera::COLOR_BUFFER);
_rtt->_rttCamera = 0;
_rtt->_outputImage = 0;
delete (_rtt);
_rtt = 0;
_si->_messagePrintPhotoOnHUD = true;
_si->_messagePrintPhotoOnHUDtick = osg::Timer::instance()->tick();
_vr->_callFromSocket = false;
_takeSCEnd = false;
}
bool SnapImageHandler::handle(const osgGA::GUIEventAdapter&
ea,osgGA::GUIActionAdapter& aa)
{
osgViewer::View *viewer = dynamic_cast<osgViewer::View *>(&aa);
switch(ea.getEventType())
{
case (osgGA::GUIEventAdapter::FRAME):
{
if (_takeSCEnd)
this->screenShotRecord();
if (_vr->isTakingAScreenshot())
this->screenShotInit();
}
case (osgGA::GUIEventAdapter::KEYDOWN):
{
if (ea.getKey() == this->_keyImage)
{
if (!_vr->isTakingAScreenshot() && !_takeSCEnd)
{
if (_vr->getRootNode() == 0 ||
_vr->getSceneNode() == 0)
return (false);
_vr->setCurrentViewMatrix(viewer->getCamera()->getViewMatrix());
_vr->setCurrentProjectionMatrix(viewer->getCamera()->getProjectionMatrix());
_vr->takeScreenShot(true);
return (true);
}
}
else if (ea.getKey() == _keyVideo)
{
if(_plugin->isVideoFromHandlerFeatureEnabled())
_vr->switchRecordingState();
return (true);
}
return (false);
}
default:
return (false);
}
return (false);
}
And the call stack :
Main thread :
ntdll.dll!7d61c846()
[Frames below may be incorrect and/or missing, no symbols loaded for
ntdll.dll]
kernel32.dll!7d4d8c9e()
kernel32.dll!7d4d8c0d()
> ot11-OpenThreadsd.dll!OpenThreads::cooperativeWait(void *
> waitHandle=0x00001c94, unsigned long timeout=4294967295) Line 55 + 0x10
> bytes C++
ot11-OpenThreadsd.dll!OpenThreads::Win32ConditionPrivateData::wait(OpenThreads::Mutex
& external_mutex={...}, long timeout_ms=-1) Line 109 + 0x1d bytes C++
ot11-OpenThreadsd.dll!OpenThreads::Condition::wait(OpenThreads::Mutex *
mutex=0x08b8797c) Line 63 C++
osg55-osgViewerd.dll!OpenThreads::BlockCount::block() Line 133 + 0x17
bytes C++
osg55-osgViewerd.dll!osgViewer::ViewerBase::renderingTraversals() Line
815 C++
osg55-osgViewerd.dll!osgViewer::ViewerBase::frame(double
simulationTime=1.7976931348623157e+308) Line 609 + 0xf bytes C++
3DEMd.dll!EM_Modules::run() Line 475 + 0x39 bytes C++
3DEMd.dll!EM_Modules::init(HWND__ * hWnd=0x00000000) Line 179 + 0x8
bytes C++
3DEMd.dll!EM_Modules::launch(std::basic_string<char,std::char_traits<char>,std::allocator<char>
> configpath="config/config.prp",
std::basic_string<char,std::char_traits<char>,std::allocator<char> >
libpath="lib/win32/",
std::basic_string<char,std::char_traits<char>,std::allocator<char> >
flexservername="") Line 136 + 0xa bytes C++
Launcherd.exe!main(int argc=1, char * * argv=0x039cd590) Line 81 +
0x9e bytes C++
Launcherd.exe!__tmainCRTStartup() Line 586 + 0x19 bytes C
Launcherd.exe!mainCRTStartup() Line 403 C
kernel32.dll!7d4e7d42()
Thread 2 :
> ot11-OpenThreadsd.dll!OpenThreads::cooperativeWait(void *
> waitHandle=0x00001e7c, unsigned long timeout=4294967295) Line 50 C++
ot11-OpenThreadsd.dll!OpenThreads::Win32ConditionPrivateData::wait(OpenThreads::Mutex
& external_mutex={...}, long timeout_ms=-1) Line 109 + 0x1d bytes C++
ot11-OpenThreadsd.dll!OpenThreads::Condition::wait(OpenThreads::Mutex *
mutex=0x03a33c64) Line 63 C++
osg55-osgViewerd.dll!OpenThreads::Block::block() Line 42 + 0x17 bytes
C++
osg55-osgViewerd.dll!osgViewer::Renderer::ThreadSafeQueue::takeFront()
Line 140 C++
osg55-osgViewerd.dll!osgViewer::Renderer::draw() Line 380 + 0xe bytes
C++
osg55-osgViewerd.dll!osgViewer::Renderer::operator()(osg::GraphicsContext *
context=0x03a39528) Line 695 + 0xf bytes C++
osg55-osgd.dll!osg::GraphicsContext::runOperations() Line 688 + 0x33
bytes C++
osg55-osgd.dll!osg::RunOperations::operator()(osg::GraphicsContext *
context=0x03a39528) Line 138 C++
osg55-osgd.dll!osg::GraphicsOperation::operator()(osg::Object *
object=0x03a39528) Line 53 + 0x19 bytes C++
osg55-osgd.dll!osg::OperationThread::run() Line 413 + 0x26 bytes
C++
osg55-osgd.dll!osg::GraphicsThread::run() Line 41 C++
ot11-OpenThreadsd.dll!OpenThreads::ThreadPrivateActions::StartThread(void *
data=0x08b87f5c) Line 116 + 0xf bytes C++
msvcr90d.dll!_callthreadstartex() Line 348 + 0xf bytes C
msvcr90d.dll!_threadstartex(void * ptd=0x08b88860) Line 331 C
kernel32.dll!7d4dfe37()
[Frames below may be incorrect and/or missing, no symbols loaded for
kernel32.dll]
Thanks ! =)
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=27528#27528
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