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c1a27a76cf
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7 Commits

Author SHA1 Message Date
Mai Lavelle
c1a27a76cf Cycles microdisplacement: preserve smooth normals for linear subdivison 
This way we prevent cracks in the model due to discontinuous normals, by using
smooth normals for displacement instead of always getting flat normals after
linear subdivision.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D1916
 2016-04-13 01:37:33 +02:00
Thomas Dinges
ee36e75b85 Cleanup: Fix Cycles Apache header. 
This was already mixed a bit, but the dot belongs there.
 2014-12-25 02:50:24 +01:00
Brecht Van Lommel
44d1c92e60 Cycles: add ptex face ID and UV attributes. 
Not the most memory efficient way to store these things but it's simple and
implementing it better requires some work to natively support subd grids as
a primitive in some way.
 2013-11-28 02:11:42 +01:00
Brecht Van Lommel
731ffd3cd4 Cycles: remove approximate subdivision surface with gregory patches code. 
It was never fully implemented and will be replaced by OpenSubdiv. Only linear
subdivision remains now. Also includes some refactoring in the split/dice code,
adding a SubdParams struct to pass around parameters more easily.
 2013-11-28 02:11:42 +01:00
Brecht Van Lommel
b9ce231060 Cycles: relicense GNU GPL source code to Apache version 2.0. 
More information in this post:
http://code.blender.org/

Thanks to all contributes for giving their permission!
 2013-08-18 14:16:15 +00:00
Brecht Van Lommel
18d709022e Cycles: clang build fixes. 2011-08-10 19:45:08 +00:00
Ton Roosendaal
da376e0237 Cycles render engine, initial commit. This is the engine itself, blender 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
 2011-04-27 11:58:34 +00:00