title: Using .vert and .frag extensions in Apple's 'OpenGL Shader Builder'
body: <p>I've just discovered the <a href="https://developer.apple.com/library/mac/#documentation/GraphicsImaging/Conceptual/OpenGLShaderBuilderUserGuide/" rel="nofollow">OpenGL Shader Builder</a> in Apple's developer tools. It seems mighty useful. Only trouble is that it seems to insist on using *.vs and *.fs in the save dialogue, where as I normally use *.vert and *.frag respectively for my shader file extensions. Is there any way to change these defaults? (this could involve a hacky solution)</p>