Fix an error in a comment; we are implementing over, not atop.

diff --git a/overlay_effect.h b/overlay_effect.h
index 06ff7939128257e9ccc006e3076b3e91b29aaeb5..121027a9f891aef043a735be1a7ff004097ee1e3 100644 (file)
--- a/overlay_effect.h
+++ b/overlay_effect.h
@@ -5,7 +5,7 @@
 // (If both images are the same aspect and the top image has alpha=1.0
 // for all pixels, you will not see anything of the one on the bottom.)
 //
 // (If both images are the same aspect and the top image has alpha=1.0
 // for all pixels, you will not see anything of the one on the bottom.)
 //

-// This is the “atop” operation from Porter-Duff blending, also used
+// This is the “over” operation from Porter-Duff blending, also used

 // when merging layers in e.g. GIMP or Photoshop.
 //
 // The first input is the bottom, and the second is the top.
 // when merging layers in e.g. GIMP or Photoshop.
 //
 // The first input is the bottom, and the second is the top.