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https://github.com/PixarAnimationStudios/OpenSubdiv
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220 lines
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Copyright 2013 Pixar
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Licensed under the Apache License, Version 2.0 (the "Apache License")
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with the following modification; you may not use this file except in
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compliance with the Apache License and the following modification to it:
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Section 6. Trademarks. is deleted and replaced with:
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6. Trademarks. This License does not grant permission to use the trade
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names, trademarks, service marks, or product names of the Licensor
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and its affiliates, except as required to comply with Section 4(c) of
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the License and to reproduce the content of the NOTICE file.
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You may obtain a copy of the Apache License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the Apache License with the above modification is
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distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the Apache License for the specific
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language governing permissions and limitations under the Apache License.
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3.0 Release Notes
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-----------------
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.. contents::
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:local:
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:backlinks: none
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----
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Release 3.1.0
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=============
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Release 3.1.0 is a significant release with several new features, important bug fixes, and general code and configuration improvements.
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**New Features**
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- Bicubic Face-varying Patches
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- Face-varying channel data that has a linear interpolation other than FVAR_LINEAR_ALL can now produce bicubic patches
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- Adaptive refinement of face-varying data can be improved by considering face-varying topology during refinement
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- Client shader code can obtain patch basis weights needed for evaluation by calling methods provided as source by Osd
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- Varying and FaceVarying Evaluation
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- Extended Far::PatchTable and the Osd Evaluator API to allow evaluation of varying and face-varying primvar data at arbitrary limit surface locations
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- 2nd Order Derivative Evaluation
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- Clients can now evaluate 2nd order derivatives using Far and Osd API
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- Separate Levels of Feature Isolation
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- Extended feature adaptive refinement with a second, shallower level of refinement at which to represent features not needing greater isolation
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- Sharp Patches for Infinitely Sharp Features
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- Infinitely sharp features can now be refined to infinitely sharp patches, both reducing the number of patches required and improving their accuracy
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**Changes**
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- Added numerical valued preprocessor directives (OPENSUBDIV_VERSION_MAJOR, etc.) to <opensubdiv/version.h>
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- Updated glFVarViewer and glEvalLimit viewer to make use of bicubic face-varying patches
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- Updated glViewer and dxViewer to add a toggle for InfSharpPatch
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- Improved documentation for Far::PatchParam and added Unnormalize() to complement Normalize()
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- Improved far_regression
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- Enabled the use of CMake's folder feature
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- Removed the use of iso646 alternative keywords ('and', 'or', 'not', etc.) to improve portability
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- Removed mayaPolySmooth example
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- Removed cmake/FindIlmBase
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- Added support for Appveyor continuous integration testing
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**Bug Fixes**
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- Improved Ptex and DX compatibility
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- Fixed some subtle bugs with Chaikin refinement
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- Fixed compatibility issues with VS2015
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- Fixed some bugs with HUD sliders in the example viewers
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Release 3.0.5
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=============
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Release 3.0.5 is a minor stability release with performance and correctness bug fixes.
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**Bug Fixes**
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- The previous release reduced transient memory use during PatchTable construction, but increased the amount of memory consumed by the resulting PatchTable itself, this regression has been fixed.
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- The example Ptex texture sampling code has been fixed to prevent sampling beyond the texels for a face when multisample rasterization is enabled.
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Release 3.0.4
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=============
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Release 3.0.4 is a minor stability release which includes important performance
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and bug fixes.
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**New Features**
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- Added accessor methods to Far::LimitStencilTable to retrieve limit stencil data including derivative weights
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- Added support for OpenCL event control to Osd::CLVertexBuffer and Osd::CLEvaluator
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**Changes**
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- Major reduction in memory use during Far::PatchTable construction for topologies with large numbers of extraordinary features
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- Improved performance for GL and D3D11 tessellation control / hull shader execution when drawing BSpline patches with the single crease patch optimization enabled
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**Bug Fixes**
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- Restored support for drawing with fractional tessellation
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- Fixed far_tutorial_6 to refine primvar data only up to the number of levels produced by topological refinement
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- Fixed build warnings and errors reported by Visual Studio 2015
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Release 3.0.3
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=============
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Release 3.0.3 is a minor stability release which includes important performance
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and bug fixes.
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**New Features**
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- Smooth normal generation tutorial, far_tutorial_8
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**Changes**
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- Major performance improvement in PatchTable construction
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- Improved patch approximations for non-manifold features
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**Bug Fixes**
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- Fixed double delete in GLSL Compute controller
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- Fixed buffer layout for GLSL Compute kernel
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- Fixed GL buffer leak in Osd::GLPatchTable
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- Fixed out-of-bounds data access for TBB and OMP stencil evaluation
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- Fixed WIN32_LEAN_AND_MEAN typo
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- Fixed Loop-related shader issues glFVarViewer
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Release 3.0.2
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=============
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Release 3.0.2 is a minor release for a specific fix.
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**Bug Fixes**
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- Fixed drawing of single crease patches
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Release 3.0.1
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=============
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Release 3.0.1 is a minor release focused on stability and correctness.
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**Changes**
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- Added a references section to the documentation, please see `References <references.html>`__
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- Removed references to AddVaryingWithWeight from examples and tutorials
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- Added more regression test shapes
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- Addressed general compiler warnings (e.g. signed vs unsigned comparisons)
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- Addressed compiler warnings in the core libraries reported by GCC's -Wshadow
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- Eased GCC version restriction, earlier requirement for version 4.8 or newer is no longer needed
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- Replaced topology initialization assertions with errors
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- Improved compatibility with ICC
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- Improved descriptive content and formatting of Far error messages
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- Improved build when configured to include no GPU specific code
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**Bug Fixes**
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- Fixed handling of unconnected vertices to avoid out of bounds data access
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- Fixed non-zero starting offsets for TbbEvalStencils and OmpEvalStencils
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- Fixed Far::StencilTableFactory::Options::factorizeIntermediateLevels
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- Fixed Far::PatchTablesFactory::Options::generateAllLevels
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- Fixed the behavior of VTX_BOUNDARY_NONE for meshes with bilinear scheme
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- Fixed some template method specializations which produced duplicate definitions
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- Disabled depth buffering when drawing the UI in the example viewers
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- Disabled the fractional tessellation spacing option in example viewers
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since this mode is currently not supported
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Release 3.0.0
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=============
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Release 3.0.0 is a major release with many significant improvements and
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changes. For more information on the following, please see
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`Introduction to 3.0 <intro_30.html>`__
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**New Features**
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- Faster subdivision using less memory
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- Support for non-manifold topology
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- Face-Varying data specified topologically
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- Elimination of fixed valence tables
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- Single-crease patch for semi-sharp edges
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- Additional irregular patch approximations
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- Introduction of Stencil Tables
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- Faster, simpler GPU kernels
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- Unified adaptive shaders
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- Updated coding style with namespaces
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- More documentation and tutorials
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**Bug Fixes**
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- Smooth Face-Varying interpolation around creases
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Release 3.0.0 RC2
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=================
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**New Features**
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- Documentation updates
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- far_tutorial_3 updates for the multiple face-varying channels
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- maya example plugin interpolates a UV channel and a vertex color channel
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**Bug Fixes**
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- Fixed a LimitStencilTableFactory bug, which returns an invalid table
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- PatchParam encoding changed to support refinement levels up to 10
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- Added Xinerama link dependency
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- Fixed MSVC 32bit build problem
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- Fixed minor cmake issues
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- Fixed glViewer/farViewer stability bugs
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Release 3.0.0 RC1
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=================
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**Changes**
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- Far::TopologyRefiner was split into several classes to clarify and focus
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the API.
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- Interpolation of Vertex and Varying primvars in a single pass is no longer
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supported.
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- The Osd layer was largely refactored.
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Previous 2.x Release Notes
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==========================
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`Previous releases <release_notes_2x.html>`_
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