[osg-users] [Compute Program executed on useprogram :/?!]

Robert Osfield robert.osfield at gmail.com
Mon Nov 27 00:08:35 PST 2017

HI Julien,

On 25 November 2017 at 19:02, Julien Valentin
<julienvalentin51 at gmail.com> wrote:
> If I don't misunderstood:
> Using a dedicated class for CS would introducing a new base class "Dispatchable" for Drawable(vas) and DispatchCompute(no vas) that would replace Drawable as Renderleaf.
> Is that what you think about?

Drawable is the base class that wraps up dispatch, I'm not going to go
have a base class for a base class just for the purpose of
DispatchCompute.  We have to avoid complicating the OSG class
structure and avoid any CPU over-head associated with adding features,
especially niche ones.

The issue of VAS is one I'll need to look at, this will need to be
switched off for DispatchCompute.  I am not at my dev machine right
now so will look into this later.

Whatever solution we end up with we'll need an osg::DispatchCompute
that wraps up glDispatchCommpute and it's parameters, this could be
called explicitly as a callback or state attribute.  The next step
would be to make DispatchCompute a Drawable and work out how to switch
off the VAS/DispalyList support.


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