* Adaptive QMC AO feature - "Adapt from speed vectors"

This is a new feature that can make using AO a lot more attractive when rendering 
animations with vector blur. It uses the speed vector info calculated in the 'Vec' 
speed vector pass, in order to reduce AO samples where pixels are moving more 
quickly. There's not much point calculating all those AO samples when the result is 
going to be smeared anyway, so you can save a bit of render time by doing 
a more noisy render in those areas.


You can use this with a new slider in the Adaptive QMC settings 'Adapt Vec'. The 
higher the value, the more aggressively it will reduce samples. 0.0 means no 
reduction, and 1.0 reduces one sample per pixel of average displacement for that 
pixel. 0.25 or so generally gives decent results, but it depends on how fast things 
are moving.

Here's a demo (compare the final blurred result, and render times):
http://mke3.net/blender/devel/raytracing/adapt_speed_off2.jpg
http://mke3.net/blender/devel/raytracing/adapt_speed_on2.jpg

And a less contrived example, a short clip from macouno's 'petunia' bconf animation:
http://mke3.net/blender/devel/raytracing/petunia-adaptvec-noblur-h264.mov
http://mke3.net/blender/devel/raytracing/petunia-adaptvec-blur-h264.mov

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/include/butspace.h b/source/blender/include/butspace.h
index 4806b23bd57..fec85c03b77 100644
--- a/source/blender/include/butspace.h
+++ b/source/blender/include/butspace.h
@@ -290,7 +290,7 @@ void curvemap_buttons(struct uiBlock *block, struct CurveMapping *cumap, char la
 #define B_COLZEN		1503
 #define B_WMTEXPASTE	1504
 #define B_WMTEXCOPY		1505
-#define B_AO_DISTANCES	1506
+#define B_AO_FALLOFF	1506
 
 /* *********************** */
 #define B_RENDERBUTS	1700