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13 Commits

Author SHA1 Message Date
Thomas Dinges
cd72396797 Cycles: Optimization for black world backgrounds 
* If a Background node is set to a black color or zero strength,
it now gets removed from the shader graph.

* In case the graph is empty (no background node), the kernel will skip
evaluating it and save some rendertime. This can help quite a bit in scenes,
where the majority of the image consists of a black background.

Example: http://www.pasteall.org/pic/show.php?id=82650
In this case the render is ~16% faster.

Differential Revision: https://developer.blender.org/D972
 2015-01-21 20:16:18 +01:00
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
Thomas Dinges
cdd1d5a93c Cycles: Initial support for volume ray visibility. 
This adds a new "Volume Scatter" option to the "Ray Visibility" panels and can be used to e.g. exclude lamps from having an influence on the volume. See release logs for an example: http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.72/Cycles

Differential revision: https://developer.blender.org/D771
 2014-09-05 16:17:39 +02:00
Brecht Van Lommel
e8b1cfed0a Cycles code refactor: replace magic ~0 values in the code with defines. 2014-03-29 13:03:47 +01:00
Brecht Van Lommel
37c4d6a50a Cycles Volume Render: add flags to quickly detect when objects have a volume shader. 2013-12-28 16:57:10 +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
54b1976958 Fix #35896: cycles crash with OSL image textures and viewport + preview render 
running at the same time.
 2013-06-28 13:05:21 +00:00
Brecht Van Lommel
9d3ad07f14 Cycles: ray visibility panel is now also available for the world, works same as 
meshes and lamps. The light path node already made this possible but it's a bit
faster to render this way and convenient.
 2013-06-10 20:34:34 +00:00
Brecht Van Lommel
88a261c13b Cycles: add render layer use environment option to disable world lighting on 
individual render layers.
 2012-04-13 12:58:12 +00:00
Brecht Van Lommel
8a76aa2e47 Cycles: fix AO pass not rendering with AO enabled for world, and make mask 
layers work more like blender internal.
 2012-02-28 19:43:33 +00:00
Brecht Van Lommel
22abc63f67 Cycles: ambient occlusion support, with AO factor and distance, and a render pass. 
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/World#Ambient_Occlusion
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Passes#Lighting_Passes
 2012-02-28 16:45:08 +00:00
Brecht Van Lommel
bae896691a Cycles: 
* Add alpha pass output, to use set Transparent option in Film panel.
* Add Holdout closure (OSL terminology), this is like the Sky option in the
  internal renderer, objects with this closure show the background / zero
  alpha.
* Add option to use Gaussian instead of Box pixel filter in the UI.
* Remove camera response curves for now, they don't really belong here in
  the pipeline, should be moved to compositor.

* Output full float values for rendering now, previously was only byte precision.
* Add a patch from Thomas to get a preview passes option, but still disabled
  because it isn't quite working right yet.
* CUDA: don't compile shader graph evaluation inline.
* Convert tabs to spaces in python files.
 2011-08-28 13:55:59 +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