uniform sampler2D _MainTex;
uniform sampler2D _CurTex;
uniform vec4 _AdaptParams;
void main ()
{
  vec2 tmpvar_1;
  tmpvar_1 = gl_TexCoord[0].xy;
  vec4 valNew_2;
  vec2 delta_3;
  vec4 tmpvar_4;
  tmpvar_4 = texture2D (_MainTex, tmpvar_1);
  vec2 tmpvar_5;
  tmpvar_5 = ((texture2D (_CurTex, tmpvar_1).xy - tmpvar_4.xy) * _AdaptParams.x);
  delta_3.x = (sign(tmpvar_5.x) * max (0.00392157, abs(tmpvar_5.x)));
  delta_3.y = (sign(tmpvar_5.y) * max (0.00392157, abs(tmpvar_5.y)));
  valNew_2.xy = (tmpvar_4.xy + delta_3);
  valNew_2.x = max (valNew_2.x, _AdaptParams.z);
  valNew_2.y = min (valNew_2.y, _AdaptParams.y);
  valNew_2.z = ((valNew_2.x - valNew_2.y) + 0.01);
  valNew_2.w = (valNew_2.y / valNew_2.z);
  gl_FragData[0] = valNew_2;
}