HI Liu,
I'm not the author of the osgcomputeshaders example so can't off the
top of my head put your code snippet in context. If the text2D is a
texture that is being written to then it won't have an osg::Image
assigned to it, the data will just reside on the GPU. You need to use
a post or final draw callback with a glRealPixels or
osg::Image::readPixels() if you want to retrieve that data from the
GPU.
Robert
On 15 October 2016 at 17:58, liu ming <81792...@qq.com> wrote:
> Hi,
>
> I am learning the osg example "osgcomputeshaders",I have a problem that how
> can I save the image(the result of a computation) from shaders to my folder ?
> I use the code :
>
>
> Code:
>while(!viewer.done())
> {
>
> viewer.frame();
>
> osgDB::writeImageFile(*(tex2D->getImage(0)),"abc.jpg");
> }
>
>
>
> but it do not work,Could somebody give some suggestions ?
>
> Thank you!
>
> Cheers,
> liu
>
> --
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=69019#69019
>
>
>
>
>
> ___
> osg-users mailing list
> osg-users@lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
