New compositor node "Sun Beams"

This allows adding a "fake" sun beam effect, simulating crepuscular rays
from light being scattered in a medium like the atmosphere or deep water.
Such effects can be created also by renderers using volumetric lighting,
but the compositor feature is a lot cheaper and is independent from 3D
rendering. This makes it ideally suited for motion graphics.

The implementation uses am optimized accumulation method for gathering
color values along a line segment. The inner buffer loop uses fixed
offset increments to avoid unnecessary multiplications and avoids
variables by using compile-time specialization (see inline comments
for further details).

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/compositor/intern/COM_Converter.cpp b/source/blender/compositor/intern/COM_Converter.cpp
index 9251e161839..99f66bcb5b4 100644
--- a/source/blender/compositor/intern/COM_Converter.cpp
+++ b/source/blender/compositor/intern/COM_Converter.cpp
@@ -99,6 +99,7 @@ extern "C" {
 #include "COM_SetValueOperation.h"
 #include "COM_SplitViewerNode.h"
 #include "COM_Stabilize2dNode.h"
+#include "COM_SunBeamsNode.h"
 #include "COM_SwitchNode.h"
 #include "COM_TextureNode.h"
 #include "COM_TimeNode.h"
@@ -394,6 +395,9 @@ Node *Converter::convert(bNode *b_node)
 		case CMP_NODE_CORNERPIN:
 			node = new CornerPinNode(b_node);
 			break;
+		case CMP_NODE_SUNBEAMS:
+			node = new SunBeamsNode(b_node);
+			break;
 	}
 	return node;
 }