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12 Commits

Author SHA1 Message Date
Brecht Van Lommel
57cf48e7c6 Cycles Hair: refactoring to support generic attributes for hair curves. There 
should be no functional changes yet. UV, tangent and intercept are now stored
as attributes, with the intention to add more like multiple uv's, vertex
colors, generated coordinates and motion vectors later.

Things got a bit messy due to having both triangle and curve data in the same
mesh data structure, which also gives us two sets of attributes. This will get
cleaned up when we split the mesh class.
 2013-01-03 12:08:54 +00:00
Brecht Van Lommel
06888b7beb Cycles OSL minor optimizations: recycle shading context, don't do memory 
allocations for trace data, avoid some virtual function calls. Only helps
a few percentages.
 2012-12-15 10:18:42 +00:00
Brecht Van Lommel
7c0a0bae79 Fix #33375: OSL geom:trianglevertices gave wrong coordinates for static BVH. 
Also some simple OSL optimization, passing thread data pointer directly instead
of via thread local storage, and creating ustrings for attribute lookup.
 2012-12-01 19:15:05 +00:00
Brecht Van Lommel
9a1c1f132d Cycles OSL: most closure code is now shared between OSL and SVM. Also fix 
transmission pass and filter glossy option.

The BSDF closure class is now more similar to the SVM closures, and includes
some flags and labels that are needed to properly categorize the BSDF's for
render passes. Phong closure is gone for the moment, needs to be adapated to
the new structure still.
 2012-10-20 12:18:00 +00:00
Dalai Felinto
dbe3cea002 silencing some of the warnings in OSL for OSX 2012-09-05 20:50:10 +00:00
Lukas Toenne
f3a91f461c Fix for OSL memory leak. The context creation for OSL is now done in the shader_setup_* functions, since it should specific to the sample being worked on. The the context release then happens in the kernel_shader functions after shader evaluation is done. Care has to be taken to ensure the shader_release function is also called in cases where the path integration is cancelled early, this was the main cause for unreleased contexts and subsequent new allocations. 2012-09-05 08:12:22 +00:00
Lukas Toenne
95b85a8c37 Revert "Use one context per OSL thread. Not sure if this actually works, but the simple renderer example in OSL does it this way." 
This does not actually work: The context must not be shared between threads, but using the same context between different samples actually seems to prevent OSL from switching between shaders. The proper solution would be to ensure memory pooling works correctly.

This reverts commit 69f87e69258d6266dcb20f09f7e3d4021e663432.
 2012-09-04 17:28:36 +00:00
Lukas Toenne
6805db676d Use one context per OSL thread. Not sure if this actually works, but the simple renderer example in OSL does it this way. 2012-09-04 08:53:47 +00:00
Campbell Barton
2d290040a1 style cleanup 2012-06-04 22:44:58 +00:00
Brecht Van Lommel
ebc653463d Cycles: 
* Fix missing update when editing objects with emission materials.
* Fix preview pass rendering set to 1 not showing full resolution.
* Fix CUDA runtime compiling failing due to missing cache directory.
* Use settings from first render layer for visibility and material override.

And a bunch of incomplete and still disabled code mostly related to closure
sampling.
 2011-09-12 13:13:56 +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