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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
Welcome to the fun world of open source. For instructions on building and installing Blender, please see the file named INSTALL. ---------------------.Blanguages and the .blender directory--------------------- The .blender directory holds various data files for Blender. In the 2.28a release those are the .Blanguages file containing a list of translations, the translations themselves and a default ttf font. Blender checks for the presence of this directory in several locations: - the current directory - your home directory - On OSX, the blender bundle is also checked - On Windows, the installation dir is checked. If you get a 'File ".Blanguages" not found' warning, try to copy the .blender dir to one of these locations (your home directory being recommended). -------------------------------------Links-------------------------------------- Getting Involved: http://www.blender.org/docs/get_involved.html Community: http://www.blender3d.org/Community/ Main blender development site: http://www.blender.org/ The Blender project homepage: http://projects.blender.org/projects/bf-blender/ Documentation: http://www.blender.org/modules.php?op=modload&name=documentation&file=index Bug tracker: http://projects.blender.org/tracker/?atid=125&group_id=9&func=browse Feature request tracker: http://projects.blender.org/tracker/?atid=128&group_id=9&func=browse