Ok, thanks. I'll check the specs as you suggested.
Hope I'll find there information about that assembly language. Thanks again, Guy. ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Wednesday, April 02, 2008 3:40 PM To: OpenSceneGraph Users Subject: Re: [osg-users] osgvertexprogram example On Wed, Apr 2, 2008 at 3:32 PM, Guy <[EMAIL PROTECTED]> wrote: Hmm.. in the example there is code, I meant what language is it? It's not GLSL. Is it Cg? I'm not familiar with shaders beside GLSL and I want to read that refraction shader in order to implement a different shader, and I want to know what language to learn. ARB_vertex_program predates GLSL and Cg, its more akin to assembly than a high level language like GLSL or Cg. These days just use GLSL as per osgshaders. The osgvertexprogram predates GLSL software and hardware so isn't a great example unless you need to target old hardware that doesn't support GLSL. Robert.
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