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Most of the changes are related to adding support for motion data throughout
the code. There's some code for actual camera/object motion blur raytracing
but it's unfinished (it badly slows down the raytracing kernel even when the
option is turned off), so that code it disabled still.
Motion vector export from Blender tries to avoid computing derived meshes
when the mesh does not have a deforming modifier, and it also won't store
motion vectors for every vertex if only the object or camera is moving.
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instead.
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* Fix broken compile of test app.
* Fix some warnings compiling with gcc for 32 bit.
* More tweaks to avoid extended precision issue from #29301.
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bit so that it's more symmetric and resulting float ops are compiled the same
way. Otherwise extended float precision being used in one place and not the
other can make comparisons fail.
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* Fix #29354: crash on branch file. Note that for best compatibility, you need
to save your files with one of the latest branch builds, since not all version
patching code was moved to trunk.
* Rename "Cycles" to "Cycles Render" in info header menu.
* Code tweaks to try to fix #29301. It's not a real solution though, I'm thinking
cause is extended precision for floats on some cpu's, used in one case but not
in the other, leading to bounding box intersection issue...
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shaders, enabled by default.
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* Add max diffuse/glossy/transmission bounces
* Add separate min/max for transparent depth
* Updated/added some presets that use these options
* Add ray visibility options for objects, to hide them from
camera/diffuse/glossy/transmission/shadow rays
* Is singular ray output for light path node
Details here:
http://wiki.blender.org/index.php/Dev:2.5/Source/Render/Cycles/LightPaths
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modifications and build instructions will follow later.
Cycles uses code from some great open source projects, many thanks them:
* BVH building and traversal code from NVidia's "Understanding the Efficiency of Ray Traversal on GPUs":
http://code.google.com/p/understanding-the-efficiency-of-ray-traversal-on-gpus/
* Open Shading Language for a large part of the shading system:
http://code.google.com/p/openshadinglanguage/
* Blender for procedural textures and a few other nodes.
* Approximate Catmull Clark subdivision from NVidia Mesh tools:
http://code.google.com/p/nvidia-mesh-tools/
* Sobol direction vectors from:
http://web.maths.unsw.edu.au/~fkuo/sobol/
* Film response functions from:
http://www.cs.columbia.edu/CAVE/software/softlib/dorf.php
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