varying highp vec2 textureCoordinate;
varying highp vec2 textureCoordinate2;

uniform sampler2D inputImageTexture;
uniform sampler2D inputImageTexture2;

void main()
{
    mediump vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);
    mediump vec4 textureColor2 = texture2D(inputImageTexture2, textureCoordinate2);
    mediump vec4 whiteColor = vec4(1.0);
    gl_FragColor = whiteColor - ((whiteColor - textureColor2) * (whiteColor - textureColor));
}