Hi Preet,

On 23 April 2012 22:43, Preet <prismatic.proj...@gmail.com> wrote:
> I'm new to OSG and OpenGL but I
> understand that ES2 has some pretty significant changes in how things
> are drawn.

OpenGL ES 2 is entirely shader based, no fixed function pipeline to
fullback on, which is a big difference to using OSG/OpenGL with a
fixed function pipeline based state.

However, you can use the OSG with OpenGL 2.0 with a purely shader
based state and if you do this the actual shaders you use for OpenGL
or OpenGL ES 2.0 will be very similar.  This similarity means you can
prototype an OpenGL ES application in OpenGL just be using the shaders
and avoiding all built in state.  You can also build the OSG so that
it doesn't compile in the fixed function state, something that you do
when you want to compile against the core profile of OpenGL 3.x.

Robert.
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