export default /* glsl */`
varying vec3 vViewPosition;

struct ToonMaterial {

	vec3 diffuseColor;

};

void RE_Direct_Toon( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {

	vec3 irradiance = getGradientIrradiance( geometryNormal, directLight.direction ) * directLight.color;

	reflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );

}

void RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {

	reflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );

}

#define RE_Direct				RE_Direct_Toon
#define RE_IndirectDiffuse		RE_IndirectDiffuse_Toon
`;