the vertex program from osgvertexprogram sample ;-) .. forgot to mention Nick
On Mon, Dec 2, 2013 at 7:21 PM, Trajce Nikolov NICK < [email protected]> wrote: > Hi Robert, > > you are right, and probably that is the best approach. How would you > approach the coalescing of drops? I am aware of papers of "properly" doing > it as well. However, I took the fastest approach :-) ... Tried that in Modo > based on some modeling tutorial and now trying to mimic it into real-time. > Don't care about the physic that much, and to make it accurate, just to > make it as soon as possible with some good visual. > > In Modo it works in a way you model few drops and you morph them as they > run across the screen, and also the models are fired on the screen with > particle effect choosing random models and positions. This is what I am > trying to mimic. The results visually are great, and I can agree with you > it is not the best approach, but let see how far I get. At the moment I am > worrying only about performance. So for the first run I am to learn about > the techniques of instancing etc. that's why I have asked for the simple > case of rendering spheres, At the end I am not going to have spheres but > some other geometries, maybe even your suggested textured quads. > > also want to ask the community, specially those with advanced GLSL skills, > if someone can rewrite the vertex program into GLSL example, please email me > > Nick > > > On Mon, Dec 2, 2013 at 7:02 PM, Robert Osfield > <[email protected]>wrote: > >> Hi Nick, >> >> On 2 December 2013 15:18, Trajce Nikolov NICK < >> [email protected]> wrote: >> >>> I have to model rain drops on wind shield, and not aligned to screen but >>> in 3d. I have set of rain drop "models" from Modo and looking around for >>> the best approach to get these models randomly placed in 3D on a geometry >>> (the wind shield) as many as possible. >>> >> >> I wouldn't personally render rain drops with traditional geometry, rather >> I'd try and create quads that are textured and using pixel shaders that do >> motion blur and refraction effects that are required. On the wind shield >> rain drops are only briefly round and will quickly coalesce with other >> drops and then run across the screen with gravity and wind effects, here >> sphere's wouldn't appropriate at all. >> >> Robert. >> >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> > > > -- > trajce nikolov nick > -- trajce nikolov nick
_______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
