shader_type spatial;

uniform vec4 emission_color: source_color;
uniform sampler2D normal_map: hint_normal;
uniform sampler2D normal_roughness: hint_normal;
uniform sampler2D emission_map;

float fresnel(float amount, vec3 normal, vec3 view)
{
	return pow((1.0 - clamp(dot(normalize(normal), normalize(view)), 0.0, 1.0 )), amount);
}

void vertex() {
	// Called for every vertex the material is visible on.
}

void fragment() {
	ALBEDO = vec3(.1);
	ROUGHNESS = texture(normal_roughness, UV).z * 1.2;
	NORMAL_MAP = texture(normal_map, UV).xyz + vec3(texture(normal_roughness, UV).xy, 0.5) - 0.5;
	float fresnel = 1.0-fresnel(0.3, NORMAL, VIEW);
	EMISSION = texture(emission_map, UV).xyz * fresnel * 2.0 * emission_color.xyz;
	//EMISSION = vec3(fresnel);
}

//void light() {
//	// Called for every pixel for every light affecting the material.
//	// Uncomment to replace the default light processing function with this one.
//}