#ifndef FILAMENT_COMMON_SHADING
#define FILAMENT_COMMON_SHADING
/*
// These variables should be in a struct but some GPU drivers ignore the
// precision qualifier on individual struct members
highp float3x3  shading_tangentToWorld;   // TBN matrix
highp float3  shading_position;         // position of the fragment in world space
      float3  shading_view;             // normalized vector from the fragment to the eye
      float3  shading_normal;           // normalized transformed normal, in world space
      float3  shading_geometricNormal;  // normalized geometric normal, in world space
      float3  shading_reflected;        // reflection of view about normal
      float shading_NoV;              // dot(normal, view), always strictly >= MIN_N_DOT_V

#if defined(MATERIAL_HAS_BENT_NORMAL)
      float3  shading_bentNormal;       // normalized transformed normal, in world space
#endif

#if defined(MATERIAL_HAS_CLEAR_COAT)
      float3  shading_clearCoatNormal;  // normalized clear coat layer normal, in world space
#endif

highp float2 shading_normalizedViewportCoord;
*/

// Worry about that problem later.
struct ShadingParams {
      float3x3  tangentToWorld;   // TBN matrix
      float3  position;         // position of the fragment in world space
      float3  view;             // normalized vector from the fragment to the eye
      float3  normal;           // normalized transformed normal, in world space
      float3  geometricNormal;  // normalized geometric normal, in world space
      float3  reflected;        // reflection of view about normal
      float NoV;              // dot(normal, view), always strictly >= MIN_N_DOT_V

#if defined(MATERIAL_HAS_BENT_NORMAL)
      float3  bentNormal;       // normalized transformed normal, in world space
#endif

#if defined(MATERIAL_HAS_CLEAR_COAT)
      float3  clearCoatNormal;  // normalized clear coat layer normal, in world space
#endif

      float2 normalizedViewportCoord;

      // These parameters are provided to inject Unity lighting into Filament data. 
      float attenuation;
      float3 ambient;
      float4 lightmapUV;

};
#endif // FILAMENT_COMMON_SHADING