[osg-users] questions about lightning(thunder)

Hi, guys is there some way to render thunder? i think that i could use the thunder image but what i wanna know is how to render the flashing or lightning with images? i mean how to flicker(blink) the light of thunder at specified area(part of area) Thanks in advance Cheers, Kim

Re: [osg-users] Deprecating vertex indices in osg::Geometry

On 5 June 2013 06:45, Robert Osfield robert.osfi...@gmail.com wrote: Right now I feel that sticking with the same naming convention that users have been used will make for a smoother transition to the new osg::Geometry. Ideally I want most users just to recompile their code and not have any

Re: [osg-users] questions about lightning(thunder)

Hi, I use textured axial billboard starting from the cloud layer to the ground to render lightnings. A short-lived light source is used to illuminate the surrounding objects. The light source use quadratic attenuation. On 05/06/2013 08:17, Kim JongBum wrote: Hi, guys is there some way to

Re: [osg-users] Incorrect zfar/znear when scene rendered under a PRE_RENDER camera

Thanks Farshid, that explains it all. Farshid Lashkari wrote: Hi Fred, OSG does compute the correct near/far values for pre-render cameras, assuming it is enabled for it. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=54463#54463

[osg-users] PatchParameter incorrect during rendering

Hi, I have two different programs, the first one of which uses GL_PATCHES primitives and has program-setPatchParameter(GL_PATCH_VERTICES) set to 1. The second program does not specify a value as it does not use GL_PATCHES. I see PatchParameter called at link time with a value of 1 for the first

Re: [osg-users] questions about lightning(thunder)

hi, errno (Lionel Lagarde) First, thanks for your kind reply and i was surprised because what you did for thunder is exactly same as i thought but it was just theory because i m new in OSG so could you let me know how to do that for thunder? did you use OSG libray and which library did u use

Re: [osg-users] Deprecating vertex indices in osg::Geometry

While out this morning it occurred to me that the conundrum of how to support the GeometryDeprecated from the existing .osg, .ive and .osgt/.osgb/.osgx serializers might be to load the data as the new streamlined osg::Geometry but place the extra data that osg::Geometry no longer stores as

Re: [osg-users] Saving a screenshot as a scaled up image

Hi, Thanks for the info guys. I'm having a look at osgPoster now. Thanks again. Cheers, Jonathan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=54468#54468 ___ osg-users mailing list

[osg-users] Changing PrecipitationEffects attributes has no effect

Hi, when I create a PrecipitationEffect, I can set it up the way I want, and everything is fine, but after adding it to the graph, if I try to change it's properties, be it the particle's color, speed, or anything, it has no effect. I set OSG_NOTIFY_LEVEL to INFO, and saw that the update()

Re: [osg-users] Changing PrecipitationEffects attributes has no effect

false alarm, I *was* missing something... the problem was on my end, PrecipitationEffect works as intended. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=54470#54470 ___ osg-users mailing list

Re: [osg-users] Edge artifacts with multiple render targets

Hi, It was casued by the 3d buffer being LINEAR_MIPMAP_LINEAR, I didn't know that was the default, and I didn't quite understand how this could cause the problem I had, until someone at the opengl forum explained that. But it was still pretty hard to understand what the GPU exactly does with