uniform mat4 projection;

#pragma MSP stage(vertex)
layout(location=0) in vec4 position;
layout(location=1) in vec3 normal;
out vec4 eye_vertex;
out VertexOut
{
	vec4 color;
};
void main()
{
	gl_Position = projection*eye_vertex;
	out float alpha = color.a;
}

#pragma MSP stage(fragment)
layout(location=0) out vec4 frag_color;
void main()
{
	frag_color = vec4(color.rgb, alpha);
}

/* Expected output: vertex
uniform mat4 projection;
out vec4 eye_vertex;
out VertexOut
{
  vec4 color;
};
out float alpha;
void main()
{
  gl_Position = projection*eye_vertex;
  alpha = color.a;
}
*/

/* Expected output: fragment
layout(location=0) out vec4 frag_color;
in VertexOut
{
  vec4 color;
};
in float alpha;
void main()
{
  frag_color = vec4(color.rgb, alpha);
}
*/