FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added catch for disabling ThreadPerCamera when contexts are shared.

Browse Source
This commit is contained in:
Robert Osfield
2005-10-06 13:20:08 +00:00
parent a380a49509
commit 1a152afda0
1 changed files with 48 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
src/osgProducer/OsgCameraGroup.cpp
View File

@@ -538,39 +538,63 @@ bool OsgCameraGroup::realize()
}
setUpSceneViewsWithData();
if (getTopMostSceneData())
// if we are multi-threaded check to see if particle exists in the scene
// if so we need to disable multi-threading of cameras.
if (_thread_model == Producer::CameraGroup::ThreadPerCamera)
{
SearchForSpecialNodes sfsn;
getTopMostSceneData()->accept(sfsn);
if (sfsn._foundParticles)
if (getTopMostSceneData())
{
osg::notify(osg::INFO)<<"Warning: disabling multi-threading of cull and draw"<<std::endl;
osg::notify(osg::INFO)<<" to avoid threading problems in osgParticle."<<std::endl;
_thread_model = Producer::CameraGroup::SingleThreaded;
}
else
{
std::set<RenderSurface*> renderSurfaceSet;
for( unsigned int i = 0; i < _cfg->getNumberOfCameras(); i++ )
SearchForSpecialNodes sfsn;
getTopMostSceneData()->accept(sfsn);
if (sfsn._foundParticles)
{
Producer::Camera *cam = _cfg->getCamera(i);
renderSurfaceSet.insert(cam->getRenderSurface());
}
if (renderSurfaceSet.size()!=_cfg->getNumberOfCameras())
{
// camera's must be sharing a RenderSurface, so we need to ensure that we're
// running single threaded, to avoid OpenGL threading issues.
osg::notify(osg::INFO)<<"Warning: disabling multi-threading of cull and draw to avoid"<<std::endl;
osg::notify(osg::INFO)<<" threading problems when camera's share a RenderSurface."<<std::endl;
osg::notify(osg::INFO)<<"Warning: disabling multi-threading of cull and draw"<<std::endl;
osg::notify(osg::INFO)<<" to avoid threading problems in osgParticle."<<std::endl;
_thread_model = Producer::CameraGroup::SingleThreaded;
}
}
}
// if we are still multi-thread check to make sure that no render surfaces
// are shared and don't use shared contexts, if they do we need to
// disable multi-threading of cameras.
if (_thread_model == Producer::CameraGroup::ThreadPerCamera)
{
std::set<RenderSurface*> renderSurfaceSet;
for( unsigned int i = 0; i < _cfg->getNumberOfCameras(); i++ )
{
Producer::Camera *cam = _cfg->getCamera(i);
renderSurfaceSet.insert(cam->getRenderSurface());
}
if (renderSurfaceSet.size()!=_cfg->getNumberOfCameras())
{
// camera's must be sharing a RenderSurface, so we need to ensure that we're
// running single threaded, to avoid OpenGL threading issues.
osg::notify(osg::INFO)<<"Warning: disabling multi-threading of cull and draw to avoid"<<std::endl;
osg::notify(osg::INFO)<<" threading problems when camera's share a RenderSurface."<<std::endl;
_thread_model = Producer::CameraGroup::SingleThreaded;
}
else if (renderSurfaceSet.size()>1 && RenderSurface::allGLContextsAreShared())
{
// we have multiple RenderSurface, but with share contexts, which is dangerous for multi-threaded usage,
// so need to disable multi-threading to prevent problems.
osg::notify(osg::INFO)<<"Warning: disabling multi-threading of cull and draw to avoid"<<std::endl;
osg::notify(osg::INFO)<<" threading problems when sharing graphics contexts within RenderSurface."<<std::endl;
_thread_model = Producer::CameraGroup::SingleThreaded;
}
}
if (_thread_model==Producer::CameraGroup::SingleThreaded)
{
osg::notify(osg::INFO)<<"OsgCameraGroup::realize() _thread_model==Producer::CameraGroup::SingleThreaded"<<std::endl;
}
else
{
osg::notify(osg::INFO)<<"OsgCameraGroup::realize() _thread_model==Producer::CameraGroup::ThreadPerCamera"<<std::endl;
}
_initialized = CameraGroup::realize();