#version 120

//
// For licensing information, see http://http.developer.nvidia.com/GPUGems/gpugems_app01.html:
//
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//
// Atmospheric scattering vertex shader
//
// Author: Sean O'Neil
//
// Copyright (c) 2004 Sean O'Neil
//

uniform float fOuterRadius;		// The outer (atmosphere) radius

varying vec3 position;

void main(void)
{
	position = gl_Vertex.xyz * fOuterRadius;
	gl_Position = gl_ModelViewProjectionMatrix * vec4(position, 1.0);
}