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#ifndef VERTEX_FRAGMENT_BASE_GLSLLIB
#define VERTEX_FRAGMENT_BASE_GLSLLIB

 //FRAGMENT_SHADER
 uniform vec3 camera_position; //position in world space of the camera

// add global variables
vec3 normal;
vec3 surfNormal;
vec3 texCoord0;
vec3 tangent;
vec3 binormal;
vec3 viewDir;


// add shader input

void initializeBaseFragmentVariables()
{
  normal = normalize( varNormal );
  surfNormal = normalize( varNormal );

  texCoord0 = vec3( varTexCoord0.xy, 1.0 );
  tangent = normalize( varTangent );

  binormal  = normalize( varBinormal );

  viewDir = normalize( camera_position - varWorldPos );
}

#endif