[osg-users] Getting a callback to update shaders?

[Robert Osfield]

On 10 April 2018 at 16:55, Rowley, Marlin R <marlin.r.rowley at lmco.com>
wrote:

> Nevermind.  I figured out that I need to update the shader state variables
> on every refresh. I thought that an initial binding was all that was
> needed, but they have to be “Set” every frame.
>

It all depends what data you are needing to pass to the shader via
uniforms.  The OSG provides standard replacements for the likes of
gl_ModelViewMatrix automatically as osg_ModelViewMatrix etc. if you enable
it via osg::State.  See the osgsimplegl3 example.

Robert.
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