[osg-users] Changes in osgVolume from 3.0 to 3.4

[Robert Osfield]

Hi Alex,

On 11 February 2016 at 20:47, Alex Taylor <alextaylor at gmail.com> wrote:
> Also, if it matters, I found that I can get the rendering I'd expect if I
> explicitly set the BlendFunc in the special case of Isosurface:
>
>   if (volumeProperties.useIsosurface){
>             stateset->setAttribute(new osg::BlendFunc(GL_ONE, GL_ZERO),
> osg::StateAttribute::ON);
>    }
>
> I'm not sure why I need to do this in OSG 3.4 when I didn't in OSG 3.0,
> probably another issue with the viewer or something on my end.

>From the details above and the picture it looks to me that OSG-3.4 is
probably doing the right thing w.r.t the settings, such as alpha
settings, you are using and OSG-3.0 implementation was incorrect and
ignored these settings so you never saw this.

Check the alpha values settings that you have set up for the VolumeTile.

Robert.