fragment shader GLSL

uniform vec4 fvAmbient;
uniform vec4 fvSpecular;
uniform vec4 fvDiffuse;
uniform float fSpecularPower;

//uniform sampler2D baseMap;

//varying vec2 Texcoord;
varying vec3 ViewDirection;
varying vec3 LightDirection;
varying vec3 Normal;

void main( void )
{
   vec3  fvLightDirection = normalize( LightDirection );
   vec3  fvNormal         = normalize( Normal );
   float fNDotL           = dot( fvNormal, fvLightDirection );

   vec3  fvReflection     = normalize( ( ( 2.0 * fvNormal ) * fNDotL ) - fvLightDirection );
   vec3  fvViewDirection  = normalize( ViewDirection );
   float fRDotV           = max( 0.0, dot( fvReflection, fvViewDirection ) );

   //vec4  fvBaseColor      = texture2D( baseMap, Texcoord );
   vec4 fvBaseColor = vec4(1,1,1,1);

   vec4  fvTotalAmbient   = fvAmbient * fvBaseColor;
   vec4  fvTotalDiffuse   = fvDiffuse * fNDotL * fvBaseColor;
   vec4  fvTotalSpecular  = fvSpecular * ( pow( fRDotV, fSpecularPower ) );

   gl_FragColor = ( fvTotalAmbient + fvTotalDiffuse + fvTotalSpecular );

}