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14 Commits

Author SHA1 Message Date
Brecht Van Lommel
d7932ceea8 Cycles: multi GPU rendering support. 
The rendering device is now set in User Preferences > System, where you can
choose between OpenCL/CUDA and devices. Per scene you can then still choose
to use CPU or GPU rendering.

Load balancing still needs to be improved, now it just splits the entire
render in two, that will be done in a separate commit.
 2012-01-09 16:58:01 +00:00
Brecht Van Lommel
049ab98469 Cycles: device code refactoring, no functional changes. 2012-01-04 18:06:32 +00:00
Brecht Van Lommel
b5595298d3 Cycles code refactoring: change displace kernel into more generic shader 
evaluate kernel, added background shader evaluate.
 2011-12-31 15:18:13 +00:00
Brecht Van Lommel
690de79580 Cycles: some tweaks for apple opencl with ATI cards, to get it working up to 
the level of ambient occlusion render, shaders still fail. Fixes found with
much help from Jens and Dalai.
 2011-12-20 17:36:56 +00:00
Brecht Van Lommel
72d2d05770 Cycles: border rendering support, includes some refactoring in how pixels are 
accessed on devices.
 2011-12-20 12:25:37 +00:00
Brecht Van Lommel
9e01abf777 Cycles: require Experimental to be set to enable CUDA on cards with shader model 
lower than 1.3, since we're not officially supporting these. We're already not
providing CUDA binaries for these, so better make it clear when compiling from
source too.
 2011-12-12 22:51:35 +00:00
Brecht Van Lommel
086e4ed825 Cycles: improve error reporting for opencl and cuda, showing error messages in 
viewport instead of only console.
 2011-11-22 20:49:33 +00:00
Brecht Van Lommel
5fd67a3ba5 Cycles: enable multi closure sampling and transparent shadows only on CPU and 
CUDA cards with shader model >= 2 for now (GTX 4xx, 5xx, ..). The CUDA compiler
can't handle the increased kernel size currently.
 2011-10-16 18:54:27 +00:00
Brecht Van Lommel
60bc63c7b8 Cycles: enable improved closure sampling, this should give less noise for mix, add 
and glass shaders. How well this will work on non-fermi GPU's is unclear still, it's
a bit heavy on register usage.
 2011-10-16 17:40:47 +00:00
Brecht Van Lommel
66b1dfae89 Cycles: tweaks to properties and nodes 
* Passes renamed to samples
* Camera lens radius renamed to aperature size/blades/rotation
* Glass and fresnel nodes input is now index of refraction
* Glossy and velvet fresnel socket removed
* Mix/add closure node renamed to mix/add shader node
* Blend weight node added for shader mixing weights

There is some version patching code for reading existing files, but it's not
perfect, so shaders may work a bit different.
 2011-09-16 13:14:02 +00:00
Brecht Van Lommel
3c7dcd7a47 Cycles: compile opencl kernels in non-blocking thread, and don't crash on 
build failure but show error message in status text.
 2011-09-02 00:10:03 +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
Brecht Van Lommel
48b4de3152 Cycles: 
* auto/fixed threads option is used now, patch by Thomas.
* remove unused CUDA_LIBRARIES, library is dynamically loaded
* fix mesh XML export operator for API update
 2011-08-24 10:44:04 +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