<Shaders>

  <VERTEX_SHADER>
    <Uniform name = "cameraPosition" size = "4" type = "float"/>
    <Uniform name = "bumpScale"      size = "1" type = "float"/>

    <RawData>
      uniform vec4  cameraPosition;
      varying mat3  normalMatrix;
      uniform float bumpScale;

      void main(void)
      {
        normalMatrix = mat3(gl_MultiTexCoord1.xyz*bumpScale,
                            gl_MultiTexCoord2.xyz*bumpScale,
                            gl_Normal);
  
        gl_TexCoord[0] = gl_MultiTexCoord0;
        gl_TexCoord[1] = cameraPosition - gl_Vertex;
        
        gl_Position    = ftransform();
      }
    </RawData>
  </VERTEX_SHADER>

  <FRAGMENT_SHADER>
    <Uniform name = "Cube" size = "1" type = "int"   x = "1"/>
    <Uniform name = "Bump" size = "1" type = "int"   x = "0"/>

    <RawData>
      uniform samplerCube Cube;
      uniform sampler2D   Bump;
      varying mat3        normalMatrix;

      void main(void)
      {
        vec3  viewDirection = normalize(-gl_TexCoord[1].xyz),
              bumpFragment  = (texture2D(Bump, gl_TexCoord[0].xy)* 2.0 - 1.0).xyz,
              normalVector  = normalize(normalMatrix * bumpFragment ),
              reflection    = reflect(viewDirection, normalVector);
        gl_FragColor        = textureCube(Cube, -reflection);
      }
    </RawData>
  </FRAGMENT_SHADER>
</Shaders>