uniform sampler2D _CameraDepthTexture;
uniform vec4 _ZBufferParams;
void main ()
{
  gl_FragData[0] = vec4((1.0 - (1.0/((
    (_ZBufferParams.x * texture2D (_CameraDepthTexture, gl_TexCoord[0].xy).x)
   + _ZBufferParams.y)))));
}


// inputs: 1, stats: 4 alu 1 tex 0 flow