Hi Joakim,
Always prefer osg::DrawElements* over vertex indices and DrawArrays as
the later will force the OSG to dispatch using OpenGL slow paths.
glDrawElements/osg::DrawElements is by far the best way to dispatch
data to OpenGL.
Robert.
On Nov 15, 2007 11:28 AM, Joakim Simonsson <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> I want to generate a grid. I have done this with triangle strips, but I
> want to try to do it with the triangle primitive instead.
>
> Is it possible to define vertices in one array, and vertex-indices in
> another array that forms the triangles, for example:
>
> The indices:
>
> 00 01 02 03
> 04 05 06 07
> 08 09 10 11
> 12 13 14 15
>
> The index array: { 00, 04, 01, 01, 04, 05, ..., 11, 14, 15 }
>
> In the osgGeometry example this approach is not used. Is it because it is
> not supported by OpenGL or OpenSceneGraph?
>
> How should I build up my grid in the best way when it comes to
> performance? My grid is approx 100x100.
>
>
> --
> Joakim Simonsson
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> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
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