[Mono-bugs] [Bug 81828][Nor] Changed - Alpha values in TextureBrush'es are incorrectly used

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Changed by sebastien at ximian.com.

http://bugzilla.ximian.com/show_bug.cgi?id=81828

--- shadow/81828	2007-06-07 12:01:39.000000000 -0400
+++ shadow/81828.tmp.11885	2007-07-06 09:34:32.000000000 -0400
@@ -1,14 +1,14 @@
 Bug#: 81828
 Product: Mono: Class Libraries
 Version: unspecified
 OS: All
 OS Details: 
-Status: NEW   
+Status: ASSIGNED   
 Resolution: 
-Severity: 
+Severity: Unknown
 Priority: Normal
 Component: libgdiplus
 AssignedTo: mono-bugs at ximian.com                            
 ReportedBy: doc.formatique at gmail.com               
 QAContact: mono-bugs at ximian.com
 TargetMilestone: ---
@@ -50,6 +50,15 @@
 *src=0x80ffffff while the equivalent pycairo program passes 0x80808080
 
 ------- Additional Comments From doc.formatique at gmail.com  2007-06-07 12:01 -------
 Created an attachment (id=19380)
 C# program exhibiting the bug
 
+
+------- Additional Comments From sebastien at ximian.com  2007-07-06 09:34 -------
+Yes, it's a (lack of) premultiplication bug. It's easy to fix in
+texture brush but that seems like the wrong place to make that fix.
+
+Generalizing the fix (gdip_bitmap_ensure_surface seems the right
+candidate) is not much harder but will require much more test (and
+will have to wait after my vacations).
+