uniform LightParameters
{
	vec3 ambient;
	vec4 light_position;
};
uniform mat4 model;
uniform mat4 view_proj;
layout(constant_id=auto) const bool use_light = true;
layout(constant_id=auto) const bool use_ambient = true;

#pragma MSP stage(vertex)
layout(location=0) in vec4 vertex;
layout(location=1) in vec3 normal;
void main()
{
	out vec4 world_vertex = model*vertex;
	out vec3 world_normal = mat3(model)*normal;
	gl_Position = view_proj*world_vertex;
}

#pragma MSP stage(fragment)
layout(location=0) out vec4 frag_color;
vec4 get_light_position()
{
	return light_position;
}
float get_light_intensity(vec3 dir)
{
	return max(dot(dir, normalize(world_normal)), 0.0);
}
vec3 get_ambient()
{
	return ambient;
}
void main()
{
	vec3 color = vec3(0.0);
	if(use_light)
	{
		vec4 light_pos = get_light_position();
		vec3 dir = normalize(light_pos.xyz-world_vertex.xyz*light_pos.w);
		color += get_light_intensity(dir);
	}
	if(use_ambient)
		color += get_ambient();
	frag_color = vec4(color, 1.0);
}

// Compile mode: module

/* Expected output: vertex
layout(location=0) uniform mat4 model;
layout(location=4) uniform mat4 view_proj;
layout(location=0) in vec4 vertex;
layout(location=1) in vec3 normal;
layout(location=0) out vec4 world_vertex;
layout(location=1) out vec3 world_normal;
void main()
{
	world_vertex = model*vertex;
	world_normal = mat3(model[0].xyz, model[1].xyz, model[2].xyz)*normal;
	gl_Position = view_proj*world_vertex;
}
*/

/* Expected output: fragment
layout(binding=57) uniform LightParameters
{
	vec3 ambient;
	vec4 light_position;
};
layout(constant_id=669465691) const bool use_light = true;
layout(constant_id=1735871551) const bool use_ambient = true;
layout(location=0) out vec4 frag_color;
layout(location=1) in vec3 world_normal;
layout(location=0) in vec4 world_vertex;
void main()
{
	vec3 color = vec3(0.0);
	if(use_light)
	{
		vec4 _return = light_position;
		color += max(dot(normalize(_return.xyz-world_vertex.xyz*_return.w), normalize(world_normal)), 0.0);
	}
	if(use_ambient)
		color += ambient;
	frag_color = vec4(color, 1.0);
}
*/