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Merge branch 'dev' of github.com:PixarAnimationStudios/OpenSubdiv into dev

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barfowl 2015-01-07 14:01:06 -08:00
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documentation/intro.rst
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@ -105,7 +105,7 @@ Heritage
This is the fifth-generation subdiv library in use by Pixar's proprietary animation
system in a lineage that started with code written by Tony DeRose and Tien Truong
for Geri\u2019s Game in 1996. Each generation has been a from-scratch rewrite that
for Geri's Game in 1996. Each generation has been a from-scratch rewrite that
has built upon our experience using subdivision surfaces to make animated films.
This code is live, so Pixar's changes to OpenSubdiv for current and future films
will be released as open source at the same time they are rolled out to Pixar

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documentation/release_notes.rst
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@ -37,7 +37,7 @@ Release 3.0
OpenSubdiv 3.0 represents a landmark release, with very profound changes to the
core algorithms. While providing faster, more efficient, and more flexible
subdivision code remains our principal goal, OpenSubdiv 3.0 introduces many
improvements that constitute a fairly radical departures from our previous
improvements that constitute a fairly radical departure from our previous
versions.
----
@ -76,7 +76,7 @@ was both redundant and inefficient.
OpenSubdiv 3.0 introduces a new *intermediate* topological representation, named
**Vtr** (Vectorized Topology Representation). The topological relationships
held by Vtr can populated using either a high-level interface where simplicity
held by Vtr can be populated using either a high-level interface where simplicity
has been emphasized, or a lower-level interface for enhanced efficiency. Vtr is
much more efficient for the kinds of topological analysis required by Far and
additionally is more flexible in that it supports the specification of
@ -141,13 +141,13 @@ Introducing Stencil Tables
OpenSubdiv 3.0 replaces the serialized subdivision tables with factorized
stencil tables. Subdivision tables as implemented in 2.x releases still contain
a fairly large amount of data inter-dependencies, which incur penalties from
fences or force addition kernel launches. Most of these dependencies have now
fences or force additional kernel launches. Most of these dependencies have now
been factorized away in the pre-computation stage, yielding *stencil tables*
instead.
Stencils remove all data dependencies and simplify all the computations into a
single trivial kernel. This simplification results in a faster pre-computation
stage, faster execution on GPU, and fewer driver overheads. The new stencil
stage, faster execution on GPU, with fewer driver overheads. The new stencil
tables Compute back-end is supported on all the same platforms as previous
releases (except GCD).
@ -280,7 +280,7 @@ adopters to start building upon these releases.
Within 'Master' releases, we expect APIs to be backward compatible so that
existing client code can seamlessly build against newer releases. Changes
may include bug fixes as well as new features,
may include bug fixes as well as new features.
.. container:: notebox