title: Using GLshort instead of GLfloat for vertices
body: <p>I'm attempting to convert my program from GLfloat to GLshort for vertex positions and I'm not sure how to represent this in the shader.  I was using a vec3 datatype in the shader but vec3 represents 3 floats.  Now I need to represent 3 shorts.  As far as I can tell OpenGL doesn't have a vector for shorts so what am I supposed to do in this case?</p>