//vertex shader
varying float FresnelFactor;
varying vec4 TexCoord;
uniform vec4 vViewPosition;

void main(void)
{
   vec3 Normal = normalize(gl_Normal * gl_NormalMatrix);
   
   TexCoord = gl_MultiTexCoord0;
   
   vec3 EyeVector = normalize(vViewPosition - gl_ModelViewMatrix * gl_Vertex).xyz;
   
   FresnelFactor = dot(Normal, EyeVector);

   gl_Position = ftransform();
}

//fragment shader
varying float FresnelFactor;
varying vec4 TexCoord;
uniform sampler2D Texture0;

void main(void)
{
   vec3 NonReflective = texture2D(Texture0, TexCoord.st).rgb;
   vec3 Reflective = vec3(1, 1, 1);

   gl_FragColor = vec4(NonReflective * (1.0 - FresnelFactor) + Reflective * FresnelFactor, 1);
}