diff --git a/changes.txt b/changes.txt
index 53ba422c..da16a2a4 100644
--- a/changes.txt
+++ b/changes.txt
@@ -228,6 +228,9 @@ should now be fps independentn
 
 --------------------------
 Changes in 1.8.5
+ - Fix SViewFrustum::clipLine. Was before clipping at wrong points (inverse places along lines).
+ - Fix compilation on OSX and prevent capturing mouse cursor when Window is not on top (Patch #319)
+   Thanks at Artem Shoobovych for bugreport and patch (https://sourceforge.net/p/irrlicht/patches/319/)
  - Fix serialization of OverrideTextColorEnabled flag in CGUITab. Thanks @ chronologicaldot for reporting (http://irrlicht.sourceforge.net/forum/viewtopic.php?f=7&t=52344&p=303891#p303891)
  - CFileSystem::getAbsolutePath no longer wrongly converts an empty filename to "/" on unix platforms.
    This fixes the bug that CFileSystem::createAndOpenFile("") returned a (strange behaving) non-null file pointer.
diff --git a/include/S3DVertex.h b/include/S3DVertex.h
index 0950a4d4..41563d5e 100644
--- a/include/S3DVertex.h
+++ b/include/S3DVertex.h
@@ -92,6 +92,7 @@ struct S3DVertex
 		return EVT_STANDARD;
 	}
 
+	//\param d d=0 returns other, d=1 returns this, values between interpolate.
 	S3DVertex getInterpolated(const S3DVertex& other, f32 d)
 	{
 		d = core::clamp(d, 0.0f, 1.0f);
@@ -170,6 +171,7 @@ struct S3DVertex2TCoords : public S3DVertex
 		return EVT_2TCOORDS;
 	}
 
+	//\param d d=0 returns other, d=1 returns this, values between interpolate.
 	S3DVertex2TCoords getInterpolated(const S3DVertex2TCoords& other, f32 d)
 	{
 		d = core::clamp(d, 0.0f, 1.0f);
diff --git a/include/SColor.h b/include/SColor.h
index 7fccb381..f7790557 100644
--- a/include/SColor.h
+++ b/include/SColor.h
@@ -448,7 +448,7 @@ namespace video
 
 		//! Interpolates the color with a f32 value to another color
 		/** \param other: Other color
-		\param d: value between 0.0f and 1.0f
+		\param d: value between 0.0f and 1.0f. d=0 returns other, d=1 returns this, values between interpolate.
 		\return Interpolated color. */
 		SColor getInterpolated(const SColor &other, f32 d) const
 		{
diff --git a/include/SViewFrustum.h b/include/SViewFrustum.h
index b1d53e39..1b522976 100644
--- a/include/SViewFrustum.h
+++ b/include/SViewFrustum.h
@@ -402,13 +402,13 @@ namespace scene
 			if (planes[i].classifyPointRelation(line.start) == core::ISREL3D_FRONT)
 			{
 				line.start = line.start.getInterpolated(line.end,
-						planes[i].getKnownIntersectionWithLine(line.start, line.end));
+						1.f-planes[i].getKnownIntersectionWithLine(line.start, line.end));
 				wasClipped = true;
 			}
 			if (planes[i].classifyPointRelation(line.end) == core::ISREL3D_FRONT)
 			{
 				line.end = line.start.getInterpolated(line.end,
-						planes[i].getKnownIntersectionWithLine(line.start, line.end));
+						1.f-planes[i].getKnownIntersectionWithLine(line.start, line.end));
 				wasClipped = true;
 			}
 		}
diff --git a/include/dimension2d.h b/include/dimension2d.h
index 13addb4b..4f0a87a1 100644
--- a/include/dimension2d.h
+++ b/include/dimension2d.h
@@ -191,7 +191,7 @@ namespace core
 
 			//! Get the interpolated dimension
 			/** \param other Other dimension to interpolate with.
-			\param d Value between 0.0f and 1.0f.
+			\param d Value between 0.0f and 1.0f. d=0 returns other, d=1 returns this, values between interpolate.
 			\return Interpolated dimension. */
 			dimension2d<T> getInterpolated(const dimension2d<T>& other, f32 d) const
 			{