Fix differ issue

Author: geoff-powell

paparazzi/src/main/java/app/cash/paparazzi/internal/OffByTwo.kt

@@ -61,8 +61,7 @@ internal object OffByTwo : Differ {
           ((expectedRgb and -0x1000000).ushr(24) + (actualRgb and -0x1000000).ushr(24)) / 2 shl 24
         val newRGB = avgAlpha or (newR shl 16) or (newG shl 8) or newB
 
-        if (abs(deltaR) <= 2 && abs(deltaG) <= 2 && abs(deltaB) <= 2 //* && abs(deltaA) <= 2 *//
-           ) {
+        if (abs(deltaR) <= 2 && abs(deltaG) <= 2 && abs(deltaB) <= 2 && abs(deltaA) <= 2) {
           similarPixels++
           deltaImage.setRGB(expectedWidth + x, y, 0xFF0000FF.toInt())
           continue

paparazzi/src/main/java/app/cash/paparazzi/internal/PixelPerfect.kt

@@ -82,9 +82,9 @@ internal object PixelPerfect : Differ {
 
     // If the delta diff is all black pixels, the computed difference is 0, but there are still
     // different pixels. We can fallback to the amount of different pixels to less precise difference to ensure difference is reported.
-//    if (differentPixels > 0 && percentDifference == 0f) {
-//      percentDifference = differentPixels * 100 / (actualWidth * actualHeight.toDouble()).toFloat()
-//    }
+    if (differentPixels > 0 && percentDifference == 0f) {
+      percentDifference = differentPixels * 100 / (actualWidth * actualHeight.toDouble()).toFloat()
+    }
 
     return if (percentDifference == 0f) {
       DiffResult.Identical(delta = deltaImage)