[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [56991] trunk/blender/source/blender/ freestyle/intern/system/PseudoNoise.cpp: fix [#35478] Spatial Noise crashes Blender on Render

[Campbell Barton]

Revision: 56991
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=56991
Author:   campbellbarton
Date:     2013-05-24 00:30:22 +0000 (Fri, 24 May 2013)
Log Message:
-----------
fix [#35478] Spatial Noise crashes Blender on Render

Modified Paths:
--------------
    trunk/blender/source/blender/freestyle/intern/system/PseudoNoise.cpp

Modified: trunk/blender/source/blender/freestyle/intern/system/PseudoNoise.cpp
===================================================================
--- trunk/blender/source/blender/freestyle/intern/system/PseudoNoise.cpp	2013-05-24 00:01:20 UTC (rev 56990)
+++ trunk/blender/source/blender/freestyle/intern/system/PseudoNoise.cpp	2013-05-24 00:30:22 UTC (rev 56991)
@@ -46,7 +46,7 @@
 real PseudoNoise::linearNoise(real x)
 {
 	real tmp;
-	int i = modf(x, &tmp) * NB_VALUE_NOISE;
+	int i = abs(modf(x, &tmp)) * NB_VALUE_NOISE;
 	real x1 = _values[i], x2 = _values[(i + 1) % NB_VALUE_NOISE];
 	real t = modf(x * NB_VALUE_NOISE, &tmp);
 	return x1 * (1 - t) + x2 * t;
@@ -64,7 +64,7 @@
 real PseudoNoise::smoothNoise(real x)
 {
 	real tmp;
-	int i = modf(x, &tmp) * NB_VALUE_NOISE;
+	int i = abs(modf(x, &tmp)) * NB_VALUE_NOISE;
 	int h = i - 1;
 	if (h < 0) {
 		h = NB_VALUE_NOISE + h;