FGFS-4.1/OpenSceneGraph
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Moved SceneView across to use an osg::CameraNode to store the projection and view matrices,

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the viewport, the clear colour and the subgraph needing rendered.  This is done
transparently so all existing functionality will behave as before.  What it does
add is the ability to set a SceneView directly by a single osg::CameraNode when required.
This commit is contained in:
Robert Osfield
2005-10-28 13:11:56 +00:00
parent 3e3d16a99d
commit ab1bd48511
3 changed files with 147 additions and 131 deletions
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21
examples/osgcamera/osgcamera.cpp
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@@ -58,9 +58,8 @@ struct CompileOperation : public osg::GraphicsThread::Operation
// Cull operation, that does a cull on the scene graph.
struct CullOperation : public osg::GraphicsThread::Operation
{
CullOperation(osg::CameraNode* camera, osgUtil::SceneView* sceneView):
CullOperation(osgUtil::SceneView* sceneView):
osg::GraphicsThread::Operation("Cull",true),
_camera(camera),
_sceneView(sceneView)
{
}
@@ -68,14 +67,9 @@ struct CullOperation : public osg::GraphicsThread::Operation
virtual void operator () (osg::GraphicsContext* context)
{
_sceneView->setState(context->getState());
_sceneView->setProjectionMatrix(_camera->getProjectionMatrix());
_sceneView->setViewMatrix(_camera->getViewMatrix());
_sceneView->setViewport(_camera->getViewport());
_sceneView->cull();
}
osg::CameraNode* _camera;
osg::ref_ptr<osgUtil::SceneView> _sceneView;
};
@@ -273,25 +267,22 @@ int main( int argc, char **argv )
++citr)
{
osg::CameraNode* camera = citr->get();
osg::GraphicsThread* graphicsThread = camera->getGraphicsContext()->getGraphicsThread();
// create a scene view to do the cull and draw
osgUtil::SceneView* sceneView = new osgUtil::SceneView;
sceneView->setDefaults();
sceneView->setFrameStamp(frameStamp.get());
if (camera->getNumChildren()>=1)
{
sceneView->setSceneData(camera->getChild(0));
}
sceneView->setCamera(camera);
// cull traversal operation
camera->getGraphicsContext()->getGraphicsThread()->add( new CullOperation(camera, sceneView), false);
graphicsThread->add( new CullOperation(sceneView), false);
// optionally add glFinish barrier to ensure that all OpenGL commands are completed before we start dispatching a new frame
if (doFinishBeforeNewDraw) camera->getGraphicsContext()->getGraphicsThread()->add( glFinishBarrierOp.get(), false);
if (doFinishBeforeNewDraw) graphicsThread->add( glFinishBarrierOp.get(), false);
// draw traversal operation.
camera->getGraphicsContext()->getGraphicsThread()->add( new DrawOperation(sceneView), false);
graphicsThread->add( new DrawOperation(sceneView), false);
}
// fourth add the frame end barrier, the pre swap barrier and finally the swap buffers to each graphics thread.