[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [37320] trunk/blender/source/blender/nodes /intern/CMP_util.c: Bugfix #27601

[Ton Roosendaal]

Revision: 37320
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=37320
Author:   ton
Date:     2011-06-08 16:08:57 +0000 (Wed, 08 Jun 2011)
Log Message:
-----------
Bugfix #27601

Revision for previous fix; fast gaussian now survives on images
with a dimension smaller than 3 pixels!

Thanks Bastien Montagne for patch.

Modified Paths:
--------------
    trunk/blender/source/blender/nodes/intern/CMP_util.c

Modified: trunk/blender/source/blender/nodes/intern/CMP_util.c
===================================================================
--- trunk/blender/source/blender/nodes/intern/CMP_util.c	2011-06-08 16:00:52 UTC (rev 37319)
+++ trunk/blender/source/blender/nodes/intern/CMP_util.c	2011-06-08 16:08:57 UTC (rev 37320)
@@ -1320,7 +1320,11 @@
 	
 	if ((xy < 1) || (xy > 3)) xy = 3;
 	
-	if (src->x < 2 && src->y < 2) return;
+	// XXX The YVV macro defined below explicitely expects sources of at least 3x3 pixels,
+	//     so just skiping blur along faulty direction if src's def is below that limit!
+	if (src->x < 3) xy &= ~(int) 1;
+	if (src->y < 3) xy &= ~(int) 2;
+	if (xy < 1) return;
 	
 	// see "Recursive Gabor Filtering" by Young/VanVliet
 	// all factors here in double.prec. Required, because for single.prec it seems to blow up if sigma > ~200