[osg-users] New to OSG, some questions (selection buffer, parametric curves)

Hi everyone, I am new to OSG, yet intend to use it for some projects. I've been through implementing some scene graph things before, I find OSG very interesting, I appreciate tight OpenGL integration (no cumbersome abstractions) and clean class design. So far I have a few questions regarding some

Re: [osg-users] New to OSG, some questions (selection buffer, parametric curves)

Hello Raphael, Welcome! Hope you enjoy your time working with OSG, and the community around it! - OpenGL selection buffer seems not recommended as a way of picking in OSG, explicit primitive intersections are used instead. Could someone please comment on this (why...)? I'll let others

Re: [osg-users] New to OSG, some questions (selection buffer, parametric curves)

- OpenGL selection buffer seems not recommended as a way of picking in OSG, explicit primitive intersections are used instead. Could someone please comment on this (why...)? OpenGL's selection render mode is almost universally implemented via software rendering, and is therefore painfully slow

Re: [osg-users] New to OSG, some questions (selection buffer, parametric curves)

Hi J-S, Yes, geometry shaders would be a must for these (and also for subdivision surfaces). I'd be interested in contributing to these (time permitting, you know that...), although I first have to catch up with OSG. Thank you! Raphael On Feb 11, 2008 10:29 PM, Jean-Sébastien Guay [EMAIL

Re: [osg-users] New to OSG, some questions (selection buffer, parametric curves)

I didn't know software rasterizer was used... hmm, but thinking about it, it makes sense as retrieving info from the GPU has not always been an easy thing, yet selection buffer exists since a very long time. Anyway, as you said, higher level knowledge of the scene is definitely an advantage. I'll