Ticket #9887: indexPNG.patch

media.php

@@ -352 +352 @@
 
         imagecopyresampled( $newimage, $image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h);
 
+        // convert from full colors to index colors, like original PNG.
+        if( IMAGETYPE_PNG == $orig_type && !imageistruecolor( $image ) )
+                imagetruecolortopalette( $newimage, false, imagecolorstotal( $image ) );
+
         // we don't need the original in memory anymore
         imagedestroy( $image );