#pragma MSP stage(vertex)
layout(location=0) in vec4 position;
void main()
{
	vec4 p = position*2.0-1.0;
	gl_Position = p;
}

/* Expected output: vertex
layout(location=0) in vec4 position;
void main()
{
	gl_Position = position*2.0-1.0;
}
*/