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2018-06-28T21:22:01Z

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wiki>Nazg-gul: /* Cycles */

2017-02-28T08:45:10Z

‎Cycles

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= Blender 2.78b Release Notes =

Blender 2.78b is a performance update release which mainly includes speedups for Cycles rendering.

== Cycles ==
[[File:blender278b.png|400px|right]]

* Multithreaded shader compilation.
* Various optimizations for emission meshes.
* Corrected light sampling for Branched Path Tracing, reduces noise leading to faster convergency.
* Improvements in constant folding algorithm, removing shading nodes which are not used for final evaluaiton.
* Improvements to some procedural textures (brick)
* Early light ray termination based on contribution of light to the result.
* Fix for background MIS with textures having small bright spots, which was causing fireflies.
* Different seed for subframes and different stereo views, allowing "slow-motion" effect and improves VR experience.
* Distance culling for objects to remove objects which are too far away from the camera.
* Fix for undesirable threads affinity change on Windows.
* Avoid various numerical issues in the kernel, solving fireflies.
* Fixes for deformation motion blur combined with autosplit.
* Better remainedtime estimation.
* Various optimizations for deformation motion blur.
* Added time steps BVH option to speed up rendering of scenes with motion blur.
* Hair particle settings were moved to Geometry panel of Render context.
* Beckmann/GGX distribution with 0 roughness is now considered a singular ray

=== Cycles: GPU ===

* Use XDG folder for cache on Linux and OSX, which avoids having per-Blender version folder with all the OpenCL/CUDA kernels built.
* Ability to enable/disable individual GPUs as opposite to old behavior with pre-defined combinations only. Not only this helps to some artists, but also makes it possible to have flexible benchmark scripting.

=== Cycles: CPU ===

* Use more global SSE optimizations for SSE4.1+ kernels.
* Multiple improvements for the latest AVX2 CPUS:
** Optimized various math utilities (cross-products, dot-products, min-axis-selection and others).
** Faster version of triangle intersection function.
** Optimization of various steps in BVH traversal algorithm (including both construction and traversal).

=== Cycles: OpenCL ===

* Added 3D textures support for OpenCL
* Make it conditional to compile-in transparent shadows support. Depending on a scene and hardware gives really major render time improvements.

== Dependency graph ==

* Solve various race conditions (conflicts between threads which are working on the same data).
* Optimization of dependency graph construction time.
* Fix missing or wrong relation links, which were causing hard-to-reproduce bone flickering.
* Fix various crashes related on linked data blocks.
* Fixes for missing animation updates.

== Other ==

* Fixed regression crash when adding texture node to compositor.
* Fixed crash of inverse kinematics on 32 bit Windows platforms
* Improve multi-threaded usage of fluid simulation
* Return correct alpha for environment map in GLSL

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wiki>Nazg-gul: /* Cycles */

Yamyam: 1版をインポートしました