Implemented first cut of more flexible depth partitioning code.
This commit is contained in:
Robert Osfield
parent
388836f2b6
commit
3d8cf5695d
@ -47,6 +47,7 @@
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#include <osgDB/ReadFile>
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#include <osgDB/WriteFile>
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#include <osg/io_utils>
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#include <iostream>
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@ -568,37 +569,155 @@ osg::Node* createTestModel(osg::ArgumentParser& arguments)
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}
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struct DepthPartitionSettings : public osg::Referenced
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{
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DepthPartitionSettings() {}
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enum DepthMode
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{
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FIXED_RANGE,
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BOUNDING_VOLUME
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};
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bool getDepthRange(osg::View& view, unsigned int partition, double& zNear, double& zFar)
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{
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switch(_mode)
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{
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case(FIXED_RANGE):
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{
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if (partition==0)
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{
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zNear = _zNear;
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zFar = _zMid;
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return true;
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}
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else if (partition==1)
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{
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zNear = _zMid;
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zFar = _zFar;
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return true;
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}
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return false;
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}
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case(BOUNDING_VOLUME):
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{
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osgViewer::View* view_withSceneData = dynamic_cast<osgViewer::View*>(&view);
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const osg::Node* node = view_withSceneData ? view_withSceneData->getSceneData() : 0;
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if (!node) return false;
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const osg::Camera* masterCamera = view.getCamera();
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if (!masterCamera) return false;
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osg::BoundingSphere bs = node->getBound();
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const osg::Matrixd& viewMatrix = masterCamera->getViewMatrix();
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//osg::Matrixd& projectionMatrix = masterCamera->getProjectionMatrix();
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osg::Vec3d lookVectorInWorldCoords = osg::Matrixd::transform3x3(viewMatrix,osg::Vec3d(0.0,0.0,-1.0));
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lookVectorInWorldCoords.normalize();
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osg::Vec3d nearPointInWorldCoords = bs.center() - lookVectorInWorldCoords*bs.radius();
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osg::Vec3d farPointInWorldCoords = bs.center() + lookVectorInWorldCoords*bs.radius();
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osg::Vec3d nearPointInEyeCoords = nearPointInWorldCoords * viewMatrix;
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osg::Vec3d farPointInEyeCoords = farPointInWorldCoords * viewMatrix;
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#if 0
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OSG_NOTICE<<std::endl;
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OSG_NOTICE<<"viewMatrix = "<<viewMatrix<<std::endl;
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OSG_NOTICE<<"lookVectorInWorldCoords = "<<lookVectorInWorldCoords<<std::endl;
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OSG_NOTICE<<"nearPointInWorldCoords = "<<nearPointInWorldCoords<<std::endl;
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OSG_NOTICE<<"farPointInWorldCoords = "<<farPointInWorldCoords<<std::endl;
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OSG_NOTICE<<"nearPointInEyeCoords = "<<nearPointInEyeCoords<<std::endl;
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OSG_NOTICE<<"farPointInEyeCoords = "<<farPointInEyeCoords<<std::endl;
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#endif
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double minZNearRatio = 0.001;
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if (masterCamera->getDisplaySettings())
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{
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OSG_NOTICE<<"Has display settings"<<std::endl;
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}
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double scene_zNear = -nearPointInEyeCoords.z();
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double scene_zFar = -farPointInEyeCoords.z();
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if (scene_zNear<=0.0) scene_zNear = minZNearRatio * scene_zFar;
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double scene_zMid = sqrt(scene_zFar*scene_zNear);
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#if 0
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OSG_NOTICE<<"scene_zNear = "<<scene_zNear<<std::endl;
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OSG_NOTICE<<"scene_zMid = "<<scene_zMid<<std::endl;
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OSG_NOTICE<<"scene_zFar = "<<scene_zFar<<std::endl;
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#endif
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if (partition==0)
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{
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zNear = scene_zNear;
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zFar = scene_zMid;
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return true;
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}
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else if (partition==1)
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{
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zNear = scene_zMid;
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zFar = scene_zFar;
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return true;
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}
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return false;
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}
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}
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}
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DepthMode _mode;
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double _zNear;
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double _zMid;
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double _zFar;
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};
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struct MyUpdateSlaveCallback : public osg::View::Slave::UpdateSlaveCallback
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{
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MyUpdateSlaveCallback(double nr, double fr):_zNear(nr),_zFar(fr) {}
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MyUpdateSlaveCallback(DepthPartitionSettings* dps, unsigned int partition):_dps(dps), _partition(partition) {}
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virtual void updateSlave(osg::View& view, osg::View::Slave& slave)
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{
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slave.updateSlaveImplementation(view);
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if (!_dps) return;
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osg::Camera* camera = slave._camera.get();
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//camera->setProjectionMatrixAsOrtho(-1,1,-1,1,1,1000);
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double computed_zNear;
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double computed_zFar;
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if (!_dps->getDepthRange(view, _partition, computed_zNear, computed_zFar))
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{
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OSG_NOTICE<<"Switching off Camera "<<camera<<std::endl;
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camera->setNodeMask(0x0);
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return;
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}
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else
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{
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camera->setNodeMask(0xffffff);
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}
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if (camera->getProjectionMatrix()(0,3)==0.0 &&
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camera->getProjectionMatrix()(1,3)==0.0 &&
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camera->getProjectionMatrix()(2,3)==0.0)
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{
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//OSG_NOTICE<<"MyUpdateSlaveCallback othographic camera"<<std::endl;
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double left, right, bottom, top, zNear, zFar;
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camera->getProjectionMatrixAsOrtho(left, right, bottom, top, zNear, zFar);
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camera->setProjectionMatrixAsOrtho(left, right, bottom, top, _zNear, _zFar);
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camera->setProjectionMatrixAsOrtho(left, right, bottom, top, computed_zNear, computed_zFar);
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}
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else
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{
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double left, right, bottom, top, zNear, zFar;
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camera->getProjectionMatrixAsFrustum(left, right, bottom, top, zNear, zFar);
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//OSG_NOTICE<<"MyUpdateSlaveCallback perpective camera zNear="<<zNear<<", zFar="<<zFar<<std::endl;
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double nr = _zNear / zNear;
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camera->setProjectionMatrixAsFrustum(left * nr, right * nr, bottom * nr, top * nr, _zNear, _zFar);
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double nr = computed_zNear / zNear;
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camera->setProjectionMatrixAsFrustum(left * nr, right * nr, bottom * nr, top * nr, computed_zNear, computed_zFar);
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}
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}
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double _zNear, _zFar;
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osg::ref_ptr<DepthPartitionSettings> _dps;
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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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@ -644,9 +763,12 @@ void setUpViewForDepthPartion(osgViewer::Viewer& viewer, double partitionPositio
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osg::notify(osg::NOTICE)<<" GraphicsWindow has not been created successfully."<<std::endl;
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}
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double zNear = 0.5;
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double zMid = partitionPosition;
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double zFar = 200.0;
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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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@ -667,7 +789,7 @@ void setUpViewForDepthPartion(osgViewer::Viewer& viewer, double partitionPositio
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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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osg::View::Slave& slave = viewer.getSlave(viewer.getNumSlaves()-1);
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slave._updateSlaveCallback = new MyUpdateSlaveCallback(zMid, zFar);
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slave._updateSlaveCallback = new MyUpdateSlaveCallback(dps.get(), 1);
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}
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// near camera
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@ -690,7 +812,7 @@ void setUpViewForDepthPartion(osgViewer::Viewer& viewer, double partitionPositio
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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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osg::View::Slave& slave = viewer.getSlave(viewer.getNumSlaves()-1);
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slave._updateSlaveCallback = new MyUpdateSlaveCallback(zNear, zMid);
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slave._updateSlaveCallback = new MyUpdateSlaveCallback(dps.get(), 0);
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}
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}
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@ -824,7 +946,12 @@ int main(int argc, char** argv)
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shadowedScene->setCastsShadowTraversalMask(CastsShadowTraversalMask);
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osg::ref_ptr<osgShadow::MinimalShadowMap> msm = NULL;
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if (arguments.read("--sv"))
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if (arguments.read("--no-shadows"))
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{
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OSG_NOTICE<<"Not using a ShadowTechnique"<<std::endl;
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shadowedScene->setShadowTechnique(0);
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}
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else if (arguments.read("--sv"))
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{
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// hint to tell viewer to request stencil buffer when setting up windows
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osg::DisplaySettings::instance()->setMinimumNumStencilBits(8);
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@ -951,6 +1078,8 @@ int main(int argc, char** argv)
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msm->setBaseTextureUnit( baseTexUnit );
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}
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OSG_NOTICE<<"shadowedScene->getShadowTechnique()="<<shadowedScene->getShadowTechnique()<<std::endl;
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osg::ref_ptr<osg::Node> model = osgDB::readNodeFiles(arguments);
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if (model.valid())
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{
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