cocos-creator-template/assets/chunks/lighting-models/default-functions/toon.chunk

// modify final lighting result for user-defined lighting models
// this function invokes at end of lighting flow
// should use lightingData for light direction and distance, and miscData for light color and intensity
// should use common lighting-model and corresponding shading-model header before function define
  //#include <lighting-models/includes/common>
  //#include <surfaces/data-structures/XXX>

// #define CC_SURFACES_LIGHTING_MODIFY_FINAL_RESULT
// void SurfacesLightingModifyFinalResult(inout LightingResult result, in LightingIntermediateData lightingData, in SurfacesMaterialData surfaceData)
// {
// }