fix alpha channel in rescale. gah, that was ugly.

5 years ago · 6b3d4588c9
parent aed70531ff
commit 6b3d4588c9
1 changed files with 1 additions and 1 deletions
--- a/image.go
+++ b/image.go
@ -58,7 +58,7 @@ func blend(d []byte, s1, s2, s3, s4 int) byte {
 }

 func squish(d []byte, s1, s2, s3, s4 int) byte {
-	return uint8((uint32(s1) + uint32(s2)) / 2)
+	return uint8((uint32(d[s1]) + uint32(d[s2]) + uint32(d[s3]) + uint32(d[s4])) / 4)
 }

 func vacuumwrap(img image.Image, format string) ([]byte, string, error) {