Re: [osg-users] stencil buffer and CSG Boolean operations

Hi Thanks alot for your comments Sergey and Chris. I have tried to implement the algorithm, code and comments below but it doesn't work as I had hoped. What I expected to see is the back wall of a cylinder (which intersects a box). What I actually see is the whole back wall of a cylinder

[osg-users] stencil buffer and CSG Boolean operations

Hi, I am trying to use the stencil buffer to implement CSG Boolean operations. As part of this I need to selectively render the front and back faces of the two objects in order to test depth and update the stencil buffer What I would like to know is how can I enable face culling in OSG ? (I

[osg-users] stencil buffer and CSG Boolean operations

Hi Craig, while I do not respond to your question directly, but concerning real time CSG booleans I'd suggest to look at papers http://www.hpi.uni-potsdam.de/fileadmin/hpi/FG_Doellner/publications/2008/TD08a/VolumetricTest.pdf

Re: [osg-users] stencil buffer and CSG Boolean operations

On 7/15/2011 4:15 AM, Craig Fletcher wrote: What I would like to know is how can I enable face culling in OSG ? (I understand from the quick start guide that attaching an attribute to a stateset is only a desired state and doesn’t issue an OpenGL command, so it may not do it, the code stub

Re: [osg-users] stencil buffer and CSG Boolean operations

Hi Sergey, Thanks for that, i'll take a look at them Cheers, Craig -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=41390#41390 ___ osg-users mailing list osg-users@lists.openscenegraph.org

Re: [osg-users] stencil buffer and CSG Boolean operations

Hi, Craig About state part - setAttribute() call by default set attribute off, you should call setAttribute(cf, osg::StateAttribute::ON) + setMode(GL_CULL_FACE, osg::StateAttribute::ON) or setAttributeAndModes(cf) which by default enables attribute. Also to be able to use stencil you should