HI List,<div><br></div><div><br></div><div>I am trying to learn the pixel shaders/geometry aspect of Gem on Ubuntu, but in trying to load the [glsl_geometry] help patch I get the following error message on rendering:</div>
<meta http-equiv="content-type" content="text/html; charset=utf-8"><div><br></div><div><br></div><div><div>error: [glsl_geometry]: need OpenGL-2.1 (or at least the geometry-shader ARB-extension) to run GLSL</div><div>... you might be able to track this down from the Find menu.</div>
</div><div><br></div><div>I can find any way to update from synaptic -is there a way I can get this updated/working?</div><div><br></div><div>Appreciate any help</div><div><br></div><div>Alan</div>