forked from bartvdbraak/blender
a9110ee033
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 |
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SConstruct |
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