testsuite/gsk/compare/mask-empty-source.node

/* guarantee bounds */
color {
  color: transparent;
  bounds: 0 0 90 90;
}

mask {
  source: container {
  }
  mask: color {
    bounds: 0 0 40 40;
    color: rgb(255,0,204);
  }
}
mask {
  mode: inverted-alpha;
  source: container {
  }
  mask: color {
    bounds: 0 50 40 40;
    color: rgb(255,0,204);
  }
}
mask {
  mode: luminance;
  source: container {
  }
  mask: color {
    bounds: 50 0 40 40;
    color: rgb(255,0,204);
  }
}
mask {
  mode: inverted-luminance;
  source: container {
  }
  mask: color {
    bounds: 50 50 40 40;
    color: rgb(255,0,204);
  }
}