qt-everywhere-src-5.15.1/qtquick3d/src/runtimerender/res/effectlib/coordinateSource.glsllib

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texture_coordinate_info coordinateSource( in int coordinateSystem, in int textureSpace )
{
  texture_coordinate_info tci;
  switch( coordinateSystem )
  {
    case texture_coordinate_object :
      tci.position = varObjPos;
      tci.tangent_u = normalize( varObjTangent );
      tci.tangent_v = normalize( varObjBinormal );
      break;
    case texture_coordinate_world :
      tci.position = varWorldPos;
      tci.tangent_u = normalize( varTangent );
      tci.tangent_v = normalize( varBinormal );
      break;
    case texture_coordinate_uvw :
    default :
      tci.position = varTexCoord0;
      tci.tangent_u = normalize( varTangent );
      tci.tangent_v = normalize( varBinormal );
      break;
  }
  return( tci );
}