uniform Colors
{
	vec4 top_color;
	vec4 bottom_color;
};

#pragma MSP stage(vertex)
layout(location=0) in vec4 position;
layout(location=1) in vec3 normal;
void main()
{
	gl_Position = position;
	passthrough;
}

#pragma MSP stage(fragment)
layout(location=0) out vec4 frag_color;
vec4 get_color(vec3 n)
{
	if(n.z>=0)
		return top_color;
	else
		return bottom_color;
}
void main()
{
	frag_color = get_color(normal);
}

/* Expected output: vertex
layout(location=0) in vec4 position;
layout(location=1) in vec3 normal;
layout(location=0) out vec3 _vs_out_normal;
void main()
{
	gl_Position = position;
	_vs_out_normal = normal;
}
*/

/* Expected output: fragment
layout(binding=23) uniform Colors
{
	vec4 top_color;
	vec4 bottom_color;
};
layout(location=0) out vec4 frag_color;
vec4 get_color(vec3 n)
{
	if(n.z>=0.0)
		return top_color;
	else
		return bottom_color;
}
layout(location=0) in vec3 _vs_out_normal;
void main()
{
	frag_color = get_color(_vs_out_normal);
}
*/