Re: [osg-users] Some question about osgShadow... can someone help me?
Hi Steven, thanks for reply. I tryed to add shadows on my scene copying the osgShadow demo example. When I cleanbuild the project, the make returns an error... I don't understand why. Can you help me? Here is the code I added to my project: Code: int ReceivesShadowTraversalMask = 0x1; int CastsShadowTraversalMask = 0x2; osg::ref_ptrosgShadow::ShadowedScene shadowedScene = new osgShadow::ShadowedScene; shadowedScene-setReceivesShadowTraversalMask(ReceivesShadowTraversalMask); shadowedScene-setCastsShadowTraversalMask(CastsShadowTraversalMask); osg::ref_ptrosgShadow::StandardShadowMap st = new osgShadow::StandardShadowMap; shadowedScene-setShadowTechnique(st.get()); shadowedScene-addChild(root); viewer.setSceneData(shadowedScene.get()); I alo removed a light, and added the one to shadoewScene and set a model to cast and receive shadows... The make error is the following: Linking CXX executable ../bin/Room CMakeFiles/Room.dir/main.cpp.o: In function `main': main.cpp:(.text+0x621): undefined reference to `osgShadow::ShadowedScene::ShadowedScene(osgShadow::ShadowTechnique*)' main.cpp:(.text+0x698): undefined reference to `osgShadow::StandardShadowMap::StandardShadowMap()' main.cpp:(.text+0x6d0): undefined reference to `osgShadow::ShadowedScene::setShadowTechnique(osgShadow::ShadowTechnique*)' collect2: ld returned 1 exit status make[2]: *** [bin/Room] Error 1 make[1]: *** [src/CMakeFiles/Room.dir/all] Error 2 make: *** [all] Error 2 I tryed to change ShadowTEcnhique but I obtain the same issue... :( -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=36255#36255 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Some question about osgShadow... can someone help me?
Hi Wojtek, thank you for reply and suggestions. Wojciech Lewandowski wrote: Axel, Messages suggest that Linker cannot find symbols. Looks to me as missing osgShadow lib in your make file. I was supposing this, and of course I need to change the make file. Unfortunatelly, to create the make file I used the cmake, and my CMakeLists.txt contains the several lines of 4 CMakeLists.txt (openScenegraph 2.3.3, bullet physics 2.76, osgWorks and osgBullet). I checked the OpenSceneGraph's one, but seems that I haven't forgotten anything... seems. I also inclueded all #include osgShadow/* lines of osgshadow to my main.cpp (the osgshadow app works properly). However, I enclose my CMakeLists.txt file if you have some second... or can you suggest me any other solution to solve this? Wojciech Lewandowski wrote: Axel, For the small scene like yours simplest ShadowMap technique should be sufficient. I am recomending it because, extending this technique to support multiple lights will be easiest thing to do. Its still advanced stuff but probably not that complex as extending other techniques. Basically you would need to multiply resources associated with shadows/light sources. So instead of single resource of each type, you will need array of shadow cameras, shadow textures, shadow texgens indexed by light ids. Your modifications will mostly override ShadowMap::cull method. All technique important work is done there. You will need to take most of the code from this method (except first part traversing scene for main view where shadows are applied) and put it into the loop iterating on all your lightsources rendering neccessary shadows with their cameras and applying proper texgens. And thats generally all whats needed in a shortcut. Hopefully when you do this you will learn enough to hack other techniques... These suggestions are really precious to me. I hope to solve the make problem to try my scene with one light and then try to implement your suggestions with multiple lights. Thank you again -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=36276#36276 Attachments: http://forum.openscenegraph.org//files/cmakelists_162.txt ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Some question about osgShadow... can someone help me?
HI Wojtek, thank you very much, your suggestion helped me a lot! Now the shadow works properly in my app. For who may have my same problem (I'm sure nobody is newbie as me), the solution was to add the line: FIND_OSG_LIBRARY(OSGSHADOW_LIBRARY osgShadow) to CMakeModules/FindOSG.cmake file Now I can go further, thank you again Wojtek!! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=36281#36281 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
