Commit Graph

22 Commits

Author SHA1 Message Date
Brecht Van Lommel
3e9f2938f0 Cycles OSL: support for the trace(point pos, vector dir, ...) function, to trace
rays from the OSL shader. The "shade" parameter is not supported currently, but
attributes can be retrieved from the object that was hit using the
getmessage("trace", ..) function.

As mentioned in the OSL specification, this function can't be used instead of
lighting, the main purpose is to allow shaders to "probe" nearby geometry, for
example to apply a projected texture that can be blocked by geometry, apply
more “wear” to exposed geometry, or make other ambient occlusion-like effects.

http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/OSL#Trace

Example .blend and render:
http://www.pasteall.org/blend/17347
http://www.pasteall.org/pic/show.php?id=40066
2012-11-06 19:59:10 +00:00
Brecht Van Lommel
2ba840652d Cycles: improve Anisotropic BSDF node, changing the Roughness U/V inputs to
Roughness, Anisotropy and Rotation. Also a fix for automatic tangents and
OSL attribute handling.

Meaning of new sockets explained in the documentation:
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/Shaders#Anisotropic
2012-11-04 22:31:32 +00:00
Brecht Van Lommel
615fe0295f Cycles OSL: refactoring and fixes
* Moved kernel/osl/nodes to kernel/shaders
* Renamed standard attributes to use geom:, particle:, object: prefixes
* Update stdosl.h to properly reflect the closures we support
* Fix the wrong stdosl.h being used for building shaders
* Add geom:numpolyvertices, geom:trianglevertices, geom:polyvertices attributes
2012-11-03 14:32:13 +00:00
Brecht Van Lommel
73b79a6763 Cycles OSL: light path, texture coordinate, bump and blended box mapping now up
to date and working.
2012-10-20 15:09:36 +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
Lukas Toenne
d396bf3546 Fix for OSL compile errors.
1) object_fetch_transform_motion omits the per-object motion blur test (r51394), must use object_fetch_transform_motion_test.
2) KernelCamera.ndctoworld has been removed (r51402), do transform invert directly.
2012-10-18 13:16:57 +00:00
Brecht Van Lommel
95963289c8 More fixes related to #32900, motion blur with cuda sm 2.0 still disabled. 2012-10-18 12:45:27 +00:00
Thomas Dinges
b2142d6533 Cycles: OSL compile fixes. 2012-10-17 22:58:18 +00:00
Lukas Toenne
0551aa14bb Fix for OSL 'background' attributes (attributes that are not associated to a particular object). Atm this is only the 'ray_length' attribute.
Background attributes are used as fallback in two cases:
1) Non-object light samples (e.g. lamp shaders)
2) Fallback if no implicit object attribute can be found
2012-10-17 12:12:26 +00:00
Thomas Dinges
b4a83e1d0e Cycles / OSL:
* Ray Length is now available in OSL (via get_attribute)
2012-10-16 22:42:05 +00:00
Lukas Toenne
af537c283c Fix for (camera) motion blur changes in Cycles OSL. Compilation was broken due to changed object transform functions. Also added a few missing renderer service implementations for matrix callbacks. 2012-10-16 10:59:35 +00:00
Campbell Barton
a425790065 style cleanup 2012-09-14 23:11:47 +00:00
Lukas Toenne
c4de45e56b Implemented the Particle Info for OSL. Uses the following attributes:
* std::particle_index
* std::particle_age
* std::particle_lifetime
* std::particle_location
* std::particle_size
* std::particle_velocity
* std::particle_angular_velocity

Just as with SVM the rotation state attribute is currently disabled due to lack of a proper quaternion or matrix type in Cycles nodes.
2012-09-14 19:09:25 +00:00
Lukas Toenne
df79ab5a77 Added Object Info node implementation for OSL. This uses an additional attribute check in the osl_services callback for special attribute names related to objects:
* std::object_location
* std::object_index
* std::material_index
* std::object_random

Other object-based attributes can be added for particle info in the same way.
2012-09-14 18:10:54 +00:00
Thomas Dinges
748582f49e Cycles / OSL:
Fixes for API changes in OSL RendererServices:

* Added two new required get_matrix methods, from OSL RendererServices (otherwise the constructor fails). The two new matrix methods probably still need an implementation. 
* Removed deprecated "get_pointcloud_attr_query" and "pointcloud". There are two new routines for pointclouds, function headers for those are there.

* Removed the (unused) PARTIO code parts from OSL. It was marked as not tested / not working, and due to the api changes here broken for sure. Code is still in svn history if needed.
2012-09-02 01:10:31 +00:00
Campbell Barton
0fbb6bff27 style cleanup: block comments 2012-06-09 17:22:52 +00:00
Thomas Dinges
46945d805f Revert my own commit r47544, this does not seem to be the correct fix. :/ 2012-06-06 23:01:42 +00:00
Thomas Dinges
379c4ae4d8 Cycles / OSL:
* Missing header kernel_passes.h, needed for "direction_to_panorama" in kernel_triangle.h
2012-06-06 22:36:07 +00:00
Thomas Dinges
da38a0348a Cycles / OSL:
* Fixes for r46114, object_fetch_transform missed time argument.
* Syntax fixes for Checker texture.
2012-06-05 15:40:02 +00:00
Campbell Barton
2d290040a1 style cleanup 2012-06-04 22:44:58 +00:00
Brecht Van Lommel
966e004bbe Cycles: OSL build & image manager fixes. 2011-05-31 16:21:30 +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