https://bugzilla.novell.com/show_bug.cgi?id=382577
Summary: Bitmap class corrupts .jpg image in OS X Product: Mono: Class Libraries Version: SVN Platform: PowerPC OS/Version: Mac OS X 10.5 Status: NEW Severity: Normal Priority: P5 - None Component: Sys.Drawing. AssignedTo: mono-bugs@lists.ximian.com ReportedBy: [EMAIL PROTECTED] QAContact: mono-bugs@lists.ximian.com Found By: --- Created an attachment (id=209743) --> (https://bugzilla.novell.com/attachment.cgi?id=209743) Test image used by example program Description of Problem: When loading a .jpg image using the System.Drawing.Bitmap class in OS X, the image is corrupted. With all the images I've tested, it appears to be the third column of the image (from the left) that is affected. Steps to reproduce the problem: Self-contained example program (requires System.Drawing assembly - the image 'test.jpg' is included with this bug report as an attachment): ------------------------------------------------------ using System; using System.Drawing; class Program { public static void Main() { Bitmap bitmap = new Bitmap("test.jpg"); for (int j = 0; j < bitmap.Height; ++j) { for (int i = 0; i < bitmap.Width; ++i) { Console.Write("[ {0:x2} {1:x2} {2:x2} ]", bitmap.GetPixel(i,j).R, bitmap.GetPixel(i,j).G, bitmap.GetPixel(i,j).B ); } Console.WriteLine(); } } } ------------------------------------------------------ Actual Results: The test image is a 4x4 black and white checkboard pattern. The output of the above program in OS X is: [ ff ff ff ][ 00 00 00 ][ ff ff ff ][ 00 00 00 ] [ 00 00 00 ][ ff ff ff ][ 00 00 ff ][ ff ff ff ] [ ff ff ff ][ 00 00 00 ][ ff ff ff ][ 00 00 00 ] [ 00 00 00 ][ ff ff ff ][ 00 00 ff ][ ff ff ff ] Note the second and fourth entries in the third column (they should be [ 00 00 00 ], but are instead [ 00 00 FF ]). Expected Results: The expected output is: [ ff ff ff ][ 00 00 00 ][ ff ff ff ][ 00 00 00 ] [ 00 00 00 ][ ff ff ff ][ 00 00 00 ][ ff ff ff ] [ ff ff ff ][ 00 00 00 ][ ff ff ff ][ 00 00 00 ] [ 00 00 00 ][ ff ff ff ][ 00 00 00 ][ ff ff ff ] The correct output is produced when the example program is compiled and run in Windows using Visual C# Express. How often does this happen? The results are consistent (the output is incorrect every time the example program is run in OS X). Additional Information: Unless I'm mistaken, this was tested with the latest version of Tao (I checked out the code from the SVN repository and built it from scratch). I apologize in advance if this turns out to be a case of user error... Thanks for your time, Jesse -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug. You are the assignee for the bug. _______________________________________________ mono-bugs maillist - mono-bugs@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-bugs