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information in material shaders for dupli objects. For now only the particle Age and individual Lifetime (in frames) are supported, more attributes can be added when needed.
The particle data is stored in a separate texture if any of the dupli objects uses particle info nodes in shaders. To map dupli objects onto particles the store an additional particle_index value, which is different from the simple dupli object index (only visible particles, also works for particle dupli groups mode).
Some simple use cases on the code.blender.org blog:
http://code.blender.org/index.php/2012/05/particle-info-node/
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* Missing header kernel_passes.h, needed for "direction_to_panorama" in kernel_triangle.h
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* Fixes for some silly typos in the checker shader.
* Added missing GPL licence block to node_fresnel.h.
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* Fixes for r46114, object_fetch_transform missed time argument.
* Syntax fixes for Checker texture.
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* Remove oslexec_pvt.h header and some typo fixes.
* This file needs deeper updates for changes done in OSL 0.6.0, see
https://github.com/imageworks/OpenShadingLanguage/commit/11ce51418b45e975ace4d919a4bdd8c2001ba300
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* Fixes for changes in the OSL register_closure() API.
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* Compile fixes, missing ShaderClosure argument for eval functions. (r40163)
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* __OSL__ is now defined for CPU when building with OSL.
* First batch of compile fixes, remove some unneeded std namespace declarations and added missing includes.
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* Update the Oren Nayar shader to incorporate updates / fixes from r41968 and r44330.
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* Ported my checker texture to OSL. :)
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* More fixes, replaced all remaining size variables with scale ones.
* Remove nonzero check in OSL textures, not needed anymore, was there to prevent division by zero for the size variable.
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* More fixes for r41599, removed clouds and distorted noise textures and ported the Noise texture to OSL.
ToDo: Color output is still commented, needs a closer look.
* Some more fixes (comments, uninitialized variables)
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* Forgot to rename Gradient OSL file.
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* More OSL fixes for r41599, removed marble and wood texture and ported Wave Texture to OSL.
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* Found an issue in the shader code, it used the x coordinate twice.
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* OSL textures were never updated after the refactor in november 2011.
* Remove stucci texture and renamed blend to gradient.
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* Added missing GPL licence block to kernel_textures.h
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* Remove double declaration of cosf.
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* Remove -use_fast_math flag from scons as well.
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other places, was mainly due to instancing not working, but also found
issues in procedural textures.
The problem was with --use_fast_math, this seems to now have way lower
precision for some operations. Disabled this flag and selectively use
fast math functions. Did not find performance regression on GTX 460 after
doing this.
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pass index, and a random number unique to the instance of the object.
This can be useful to give some variation to a single material assigned to
multiple instances, either manually controlled through the object index, based
on the object location, or randomized for each instance.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Object_Info
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Note: two remains, in comments in extern/bullet2/src/LinearMath/btVector3.h and extern/libmv/libmv/image/tuple.h.
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feature enabling #defines a bit.
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space size and location were outdated often, and already computed on demand
by blender internal, now do that through RNA as well.
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smoothing factor to reduce high values near the light.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Light_Falloff
Note that this was already possible to do manually with the Ray Length, but
this adds a convenient node for it. This commit also makes the mapping node
min/max option work, fixing #31348.
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second time I need a scond commit to get the equisolid formula right, shame on me ;)
the formula is:
r = 2 x focallength x sin (theta / 2)
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lens and vector pass problem
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vectors and window texture coordinates. Only for Fisheye Equisolid it's
still not working correct yet. Patch from Dalai with modifications.
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the FOV formular is: R = 2 * lens * sin (theta / 2)
in this case theta is fov/2 already, thus the fix
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For sample images see:
http://www.dalaifelinto.com/?p=399 (equisolid)
http://www.dalaifelinto.com/?p=389 (equidistant)
The 'use_panorama' option is now part of a new Camera type: 'Panorama'.
Created two other panorama cameras:
- Equisolid: most of lens in the market simulate this lens - e.g. Nikon, Canon, ...)
this works as a real lens up to an extent. The final result takes the
sensor dimensions into account also.
.:. to simulate a Nikon DX2S with a 10.5mm lens do:
sensor: 23.7 x 15.7
fisheye lens: 10.5
fisheye fov: 180
render dimensions: 4288 x 2848
- Equidistant: this is not a real lens model. Although the old equidistant lens simulate
this lens. The result is always as a circular fisheye that takes the whole sensor
(in other words, it doesn't take the sensor into consideration).
This is perfect for fulldomes ;)
For the UI we have 10 to 360 as soft values and 10 to 3600 as hard values (because we can).
Reference material:
http://www.hdrlabs.com/tutorials/downloads_files/HDRI%20for%20CGI.pdf
http://www.bobatkins.com/photography/technical/field_of_view.html
Note, this is not a real simulation of the light path through the lens.
The ideal solution would be this:
https://graphics.stanford.edu/wikis/cs348b-11/Assignment3
http://www.graphics.stanford.edu/papers/camera/
Thanks Brecht for the fix, suggestions and code review.
Kudos for the dome community for keeping me stimulated on the topic since 2009 ;)
Patch partly implemented during lab time at VisGraf, IMPA - Rio de Janeiro.
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travelled
by the last light ray. One use case for this might be to do absorption.
Patch #31232 by Agustin benavidez, see this blog post for details:
http://agus3d.blogspot.com.ar/2012/05/blender-cycles-ray-length-node-output.html
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Fix: texture coordinate normal output was not correct, still changed under
object transform.
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Most of the changes are related to adding support for motion data throughout
the code. There's some code for actual camera/object motion blur raytracing
but it's unfinished (it badly slows down the raytracing kernel even when the
option is turned off), so that code it disabled still.
Motion vector export from Blender tries to avoid computing derived meshes
when the mesh does not have a deforming modifier, and it also won't store
motion vectors for every vertex if only the object or camera is moving.
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=== BVH build time optimizations ===
* BVH building was multithreaded. Not all building is multithreaded, packing
and the initial bounding/splitting is still single threaded, but recursive
splitting is, which was the main bottleneck.
* Object splitting now uses binning rather than sorting of all elements, using
code from the Embree raytracer from Intel.
http://software.intel.com/en-us/articles/embree-photo-realistic-ray-tracing-kernels/
* Other small changes to avoid allocations, pack memory more tightly, avoid
some unnecessary operations, ...
These optimizations do not work yet when Spatial Splits are enabled, for that
more work is needed. There's also other optimizations still needed, in
particular for the case of many low poly objects, the packing step and node
memory allocation.
BVH raytracing time should remain about the same, but BVH build time should be
significantly reduced, test here show speedup of about 5x to 10x on a dual core
and 5x to 25x on an 8-core machine, depending on the scene.
=== Threads ===
Centralized task scheduler for multithreading, which is basically the
CPU device threading code wrapped into something reusable.
Basic idea is that there is a single TaskScheduler that keeps a pool of threads,
one for each core. Other places in the code can then create a TaskPool that they
can drop Tasks in to be executed by the scheduler, and wait for them to complete
or cancel them early.
=== Normal ====
Added a Normal output to the texture coordinate node. This currently
gives the object space normal, which is the same under object animation.
In the future this might become a "generated" normal so it's also stable for
deforming objects, but for now it's already useful for non-deforming objects.
=== Render Layers ===
Per render layer Samples control, leaving it to 0 will use the common scene
setting.
Environment pass will now render environment even if film is set to transparent.
Exclude Layers" added. Scene layers (all object that influence the render,
directly or indirectly) are shared between all render layers. However sometimes
it's useful to leave out some object influence for a particular render layer.
That's what this option allows you to do.
=== Filter Glossy ===
When using a value higher than 0.0, this will blur glossy reflections after
blurry bounces, to reduce noise at the cost of accuracy. 1.0 is a good
starting value to tweak.
Some light paths have a low probability of being found while contributing much
light to the pixel. As a result these light paths will be found in some pixels
and not in others, causing fireflies. An example of such a difficult path might
be a small light that is causing a small specular highlight on a sharp glossy
material, which we are seeing through a rough glossy material. With path tracing
it is difficult to find the specular highlight, but if we increase the roughness
on the material the highlight gets bigger and softer, and so easier to find.
Often this blurring will be hardly noticeable, because we are seeing it through
a blurry material anyway, but there are also cases where this will lead to a
loss of detail in lighting.
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size now, this seems to work well after some testing.
Fix: material override not working on objects without a material assigned.
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instead.
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