Introduced a new more generic function for settings up the depth partitioning of viewer cameras.
This commit is contained in:
Robert Osfield
parent
832a779d63
commit
be31cdb328
@ -720,100 +720,144 @@ struct MyUpdateSlaveCallback : public osg::View::Slave::UpdateSlaveCallback
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unsigned int _partition;
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};
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void setUpViewForDepthPartion(osgViewer::Viewer& viewer, double partitionPosition)
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bool setUpDepthPartitionForCamera(osg::View& view, osg::Camera* cameraToPartition, DepthPartitionSettings* dps)
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{
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OSG_NOTICE<<"setUpViewForDepthPartion(Viewer, "<<partitionPosition<<")"<<std::endl;
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osg::ref_ptr<osg::GraphicsContext> context = cameraToPartition->getGraphicsContext();
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if (!context) return false;
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osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
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if (!wsi)
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osg::ref_ptr<osg::Viewport> viewport = cameraToPartition->getViewport();
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if (!viewport) return false;
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cameraToPartition->setGraphicsContext(0);
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cameraToPartition->setViewport(0);
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bool useMastersSceneData = true;
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osg::Matrixd projectionOffset;
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osg::Matrixd viewOffset;
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if (view.getCamera()==cameraToPartition)
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{
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OSG_NOTICE<<"View::setUpViewAcrossAllScreens() : Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
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return;
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}
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osg::GraphicsContext::ScreenIdentifier si(0);
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si.readDISPLAY();
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// displayNum has not been set so reset it to 0.
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if (si.displayNum<0) si.displayNum = 0;
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if (si.screenNum<0) si.screenNum = 0;
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unsigned int width = 1280, height = 1024;
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wsi->getScreenResolution(si, width, height);
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osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
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traits->screenNum = 0;
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traits->x = 0;
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traits->y = 0;
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traits->width = width;
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traits->height = height;
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traits->windowDecoration = false;
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traits->doubleBuffer = true;
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traits->sharedContext = 0;
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osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
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if (gc.valid())
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{
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osg::notify(osg::INFO)<<" GraphicsWindow has been created successfully."<<std::endl;
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// replace main camera with depth partition cameras
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OSG_NOTICE<<"Replacing main Camera"<<std::endl;
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}
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else
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{
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osg::notify(osg::NOTICE)<<" GraphicsWindow has not been created successfully."<<std::endl;
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unsigned int i = view.findSlaveIndexForCamera(cameraToPartition);
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if (i>=view.getNumSlaves()) return false;
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osg::View::Slave& slave = view.getSlave(i);
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useMastersSceneData = slave._useMastersSceneData;
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projectionOffset = slave._projectionOffset;
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viewOffset = slave._viewOffset;
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OSG_NOTICE<<"Replacing slave Camera"<<i<<std::endl;
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view.removeSlave(i);
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}
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osg::ref_ptr<DepthPartitionSettings> dps = new DepthPartitionSettings;
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dps->_mode = DepthPartitionSettings::BOUNDING_VOLUME;
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dps->_zNear = 0.5;
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dps->_zMid = partitionPosition;
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dps->_zFar = 1000.0;
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// far camera
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{
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(0,0, width, height));
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camera->setGraphicsContext(context.get());
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camera->setViewport(viewport.get());
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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double scale_z = 1.0;
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double translate_z = 0.0;
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camera->setDrawBuffer(cameraToPartition->getDrawBuffer());
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camera->setReadBuffer(cameraToPartition->getReadBuffer());
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camera->setComputeNearFarMode(osg::Camera::DO_NOT_COMPUTE_NEAR_FAR);
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camera->setCullingMode(osg::Camera::ENABLE_ALL_CULLING);
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viewer.addSlave(camera.get(), osg::Matrix::scale(1.0, 1.0, scale_z)*osg::Matrix::translate(0.0, 0.0, translate_z), osg::Matrix() );
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view.addSlave(camera.get());
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osg::View::Slave& slave = viewer.getSlave(viewer.getNumSlaves()-1);
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slave._updateSlaveCallback = new MyUpdateSlaveCallback(dps.get(), 1);
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osg::View::Slave& slave = view.getSlave(view.getNumSlaves()-1);
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slave._useMastersSceneData = useMastersSceneData;
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slave._projectionOffset = projectionOffset;
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slave._viewOffset = viewOffset;
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slave._updateSlaveCallback = new MyUpdateSlaveCallback(dps, 1);
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}
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// near camera
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{
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(0,0, width, height));
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camera->setGraphicsContext(context.get());
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camera->setViewport(viewport.get());
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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double scale_z = 1.0;
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double translate_z = 0.0;
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camera->setDrawBuffer(cameraToPartition->getDrawBuffer());
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camera->setReadBuffer(cameraToPartition->getReadBuffer());
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camera->setComputeNearFarMode(osg::Camera::DO_NOT_COMPUTE_NEAR_FAR);
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camera->setCullingMode(osg::Camera::ENABLE_ALL_CULLING);
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camera->setClearMask(GL_DEPTH_BUFFER_BIT);
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viewer.addSlave(camera.get(), osg::Matrix::scale(1.0, 1.0, scale_z)*osg::Matrix::translate(0.0, 0.0, translate_z), osg::Matrix() );
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view.addSlave(camera.get());
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osg::View::Slave& slave = viewer.getSlave(viewer.getNumSlaves()-1);
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slave._updateSlaveCallback = new MyUpdateSlaveCallback(dps.get(), 0);
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osg::View::Slave& slave = view.getSlave(view.getNumSlaves()-1);
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slave._useMastersSceneData = useMastersSceneData;
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slave._projectionOffset = projectionOffset;
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slave._viewOffset = viewOffset;
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slave._updateSlaveCallback = new MyUpdateSlaveCallback(dps, 0);
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}
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return true;
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}
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typedef std::list< osg::ref_ptr<osg::Camera> > Cameras;
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Cameras getActiveCameras(osg::View& view)
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{
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Cameras activeCameras;
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if (view.getCamera() && view.getCamera()->getGraphicsContext())
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{
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activeCameras.push_back(view.getCamera());
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}
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for(unsigned int i=0; i<view.getNumSlaves(); ++i)
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{
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osg::View::Slave& slave = view.getSlave(i);
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if (slave._camera.valid() && slave._camera->getGraphicsContext())
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{
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activeCameras.push_back(slave._camera.get());
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}
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}
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return activeCameras;
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}
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bool setUpDepthPartition(osgViewer::View& view, DepthPartitionSettings* dsp)
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{
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OSG_NOTICE<<"setUpDepthPartition(View,..)"<<std::endl;
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Cameras originalCameras = getActiveCameras(view);
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if (originalCameras.empty())
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{
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OSG_NOTICE<<"setUpDepthPartition(View,..) doing view.setUpViewAcrossAllScreens()"<<std::endl;
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view.setUpViewAcrossAllScreens();
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originalCameras = getActiveCameras(view);
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if (originalCameras.empty())
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{
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OSG_NOTICE<<"setUpDepthPartition(View,..) Unable to set up windows for viewer."<<std::endl;
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return false;
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}
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}
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bool threadsWereRunning = view.getViewerBase()->areThreadsRunning();
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if (threadsWereRunning) view.getViewerBase()->stopThreading();
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for(Cameras::iterator itr = originalCameras.begin();
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itr != originalCameras.end();
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++itr)
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{
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setUpDepthPartitionForCamera(view, itr->get(), dsp);
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}
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if (threadsWereRunning) view.getViewerBase()->startThreading();
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return true;
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}
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@ -878,7 +922,13 @@ int main(int argc, char** argv)
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double partitionPosition = 5.0;
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if (arguments.read("--depth-partition",partitionPosition) || arguments.read("--dp"))
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{
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setUpViewForDepthPartion(viewer,partitionPosition);
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// set up depth partitioning
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osg::ref_ptr<DepthPartitionSettings> dps = new DepthPartitionSettings;
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dps->_mode = DepthPartitionSettings::BOUNDING_VOLUME;
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dps->_zNear = 0.5;
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dps->_zMid = partitionPosition;
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dps->_zFar = 1000.0;
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setUpDepthPartition(viewer, dps.get());
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}
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float fov = 0.0;
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@ -1163,7 +1213,7 @@ int main(int argc, char** argv)
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// create the windows and run the threads.
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viewer.realize();
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if (fov!=0.0)
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{
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double fovy, aspectRatio, zNear, zFar;
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