uniform Lighting
{
	vec4 light_dir[2];
};
uniform Transform
{
	mat4 vp;
	mat4 model;
};
const bool use_light = false;

#pragma MSP stage(vertex)
layout(location=0) in vec4 vertex;
layout(location=1) in vec3 normal;
out vec3 world_light_dir[2];
void main()
{
	vec4 world_vertex = model*vertex;
	out vec3 world_normal = mat3(model)*normal;
	gl_Position = vp*world_vertex;
	for(int i=0; i<2; ++i)
		world_light_dir[i] = light_dir[i].xyz-world_vertex.xyz*light_dir[i].w;
}

#pragma MSP stage(fragment)
layout(location=0) out vec4 frag_color;
void main()
{
	vec3 color = vec3(0.1);
	if(use_light)
	{
		for(int i=0; i<2; ++i)
		{
			float intensity = max(dot(normalize(world_normal), world_light_dir[i]), 0.0);
			color += intensity;
		}
	}
	frag_color = vec4(color, 1.0);
}

/* Expected output: vertex
layout(binding=48) uniform Transform
{
	mat4 vp;
	mat4 model;
};
layout(location=0) in vec4 vertex;
void main()
{
	gl_Position = vp*model*vertex;
}
*/

/* Expected output: fragment
layout(location=0) out vec4 frag_color;
void main()
{
	frag_color = vec4(vec3(0.1), 1.0);
}
*/