Re: [osg-users] Particles / gpu / cpu

[Robert Osfield]

Hi Johny,

With modern graphics hardware I would recommend using GPU.

Most of osgParticle was written back before shaders so is primarily
around CPU particles. These old classes need to be kept around for
backwards compatibility but I wouldn't recommend using these CPU
particles systems these days.

The exception in osgParticle is the PrecipitionEffect class that
implements a GPU based rain/snow/sleet rendering.

Robert.


On 22 February 2017 at 09:18, Johny Canes  wrote:
> Hi,
>
> I'm going to do add 'particles' to my osgapp, and someone might be interested 
> in how I. I'll do some research to see what tradeoffs should be made, and 
> whether I can run some of it on the gpu, et cetera. I'm not sure if I want to 
> do manual state changes via uniform callbacks on a large set of particles.
>
> I'm aiming for dust particles, radioactive particles, maybe rain. Maybe 
> generalize it into a system or write a handy glsl for each different type.
>
> Thank you!
>
> Cheers,
> Johny
>
> --
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=70306#70306
>
>
>
>
>
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[osg-users] Particles / gpu / cpu

[Johny Canes]

Hi,

I'm going to do add 'particles' to my osgapp, and someone might be interested 
in how I. I'll do some research to see what tradeoffs should be made, and 
whether I can run some of it on the gpu, et cetera. I'm not sure if I want to 
do manual state changes via uniform callbacks on a large set of particles.

I'm aiming for dust particles, radioactive particles, maybe rain. Maybe 
generalize it into a system or write a handy glsl for each different type.

Thank you!

Cheers,
Johny

--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=70306#70306





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