Hi, thanks, I've just read that SMOOTH isn't supported since several years ago.
It is important since this is physically correct that even objects which are very small, does contribute to the pixel color. Is it possible to calculate the pixel coverage or get it in a shader? That would be a good solution. Does anyone know how Multi-sampling is implemented algorithmically? Thanks, Guy. ________________________________ From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Michael Platings Sent: Tuesday, March 09, 2010 5:09 PM To: OpenSceneGraph Users Subject: Re: [osg-users] automatic pixel transparency adjustment Hi Guy, the behaviour of multisampling is quite well defined - the more samples you request, the more accurate the render will be. Yes, objects smaller than a pixel may not be rendered. Why is that a problem for you? The behaviour of smooth rendering is not well defined. It's a hint to the OpenGL implementation, nothing more. To find out how it behaves on a particular graphics card you'll have to experiment. On 9 March 2010 14:32, Guy <g...@dvp.co.il> wrote: Hi all, Thanks again for your answers, I've read about Multi-sampling, SMOOTH rendering and centroid variables. It all helped a lot. I've few questions regarding these issues that were not clear: With multisampling: - if none of the samples falls within the intersection of the object and the pixel, than nothing will be rendered? Does it mean that tiny objects will disappear? - multi-sampling can never be accurate, right? I mean almost never can set the object alpha to the object pixel coverage percentange? With SMOOTH rendering: - is it more accurate than multisampling? Is it possible that OpenGL implementation will not calculate the pixel coverage correctly? - Does it works slower or faster than multisampling? - Will it work even for tiny objects? Thanks, Guy. _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g
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