Hi Robert -- My update and build of OSG went fine, and my draw instanced
test programs ported to your implementation smoothly. Thanks again for your
help on this great new feature of OSG.

Hi to all -- Current svn head of OSG now supports EXT_draw_instanced. Check
out the osgdrawinstanced example, which creates a scene graph consisting of
a single Geode with a single Geometry with four vertices, but draws several
hundred quads at different orientations, positions, and colors.

Paul Martz
Skew Matrix Software LLC
http://www.skew-matrix.com
+1 303 859 9466


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
Robert Osfield
Sent: Tuesday, January 06, 2009 9:14 AM
To: OpenSceneGraph Submissions
Subject: Re: [osg-submissions] Support for draw_instanced

Hi Paul,

On Tue, Jan 6, 2009 at 4:06 PM, Paul Martz <[email protected]> wrote:
> Especially thanks for placing the extension support check in State. I 
> disliked having it in the draw() method, but wasn't sure where it should
go.

Extension checking/function call set up is both a strong and a weak point in
the OSG, there are motivations for centralising extension setup and
motivations for keeping them local to classes - so the OSG has ended up
doing both in different places, sometimes for good reasons, sometime for the
wrong reasons...  It'd be nice to have a simpler and more manageable scheme
that avoids the issues of being pulled in different directions.  OpenGL ES
and OpenGL 3.x into the mix will further complicate things unless we do come
up with a new scheme...

> I'm updating and building now. I'll let you know if I find any issues.

Thanks,
Robert.
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