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10.x.x.x (relative to 10.4.x.x)
========
Breaking Changes
----------------
- Python : Removed support for Python 2.
- Primitive : Changed `variableIndexedView()` return type from `boost::optional` to `std::optional`.
10.4.x.x (relative to 10.4.7.0)
========
10.4.7.0 (relative to 10.4.6.0)
========
Improvements
------------
- IECoreGL::PointsPrimitive : Added `renderUsesGLPoints()` method (#1347).
- IECoreGL::CurvesPrimitive : Added `renderUsesGLLines()` method (#1347).
- StringAlgo : Added `concat()` and `toInt()` methods (#1343).
- IECoreScene::ShaderNetworkAlgo (#1343) :
- Added `convertToOSLConventions()`, `expandSplines()` and `collapseSplines()`.
- Deprecated `convertOSLComponentConnections()`, `expandSplineParameters()` and `collapseSplineParameters()`.
- USDScene : Added support for roundtripping connections to SplineData parameters.
Fixes
-----
- IECoreUSD::PrimitiveAlgo (#1346) :
- Fixed reading of primitives containing `primvars:normals`. These are now correctly loaded as a primitive variable called `N`, taking precedence over the UsdGeomPointBased `normals` attribute.
- Fixed writing of indexed normals so that the indexing is retained on load. Note that this means that normals are now _always_ written as `primvars:normals` and never via the UsdGeomPointBased `normals` attribute.
10.4.6.0 (relative to 10.4.5.0)
========
Features
--------
- MeshAlgo : Added new MeshSplitter class, for efficient splitting meshes based on uniform primitive variables.
- ImathHash : Added new header that defines `std::hash` for Imath types.
Improvements
------------
- PointsPrimitive, Primitive : Accelerated bounds computation using `tbb::parallel_reduce`.
- MeshAlgo : Improved performance of `segment()`.
Fixes
-----
- ImageReader : Fixed compilation with versions of OIIO < 2.4.
- USDScene : Invalid primitive variables are now skipped during loading, with a warning being emitted instead.
- MeshAlgo : Fixed crease handling in `deleteFaces()`.
Build
-----
- Updated CI builds to use GafferHQ/dependencies version `6.0.0`, making them suitable for use in Gaffer `1.2.x.x`.
10.4.5.0 (relative to 10.4.4.0)
========
Improvements
------------
- CurvesAlgo, MeshAlgo, PointsAlgo : `resamplePrimitiveVariable()` now supports all data types when resampling a `Constant` primitive variable.
Build
-----
- Update Windows release build dependencies to 6.2.1.
- Added compatibility with OpenImageIO 2.4.
10.4.4.0 (relative to 10.4.3.1)
========
Improvements
------------
- USD :
- Added loading of `float4` USD shader parameters as `Color4` parameters.
- Added support for Arnold-USD's convention for representing connections to individual indices of an array.
Build
-----
- Added compatibility with USD 23.02.
- Updated Windows dependencies to 6.2.1.
10.4.3.1 (relative to 10.4.3.0)
========
Fixes
---
- IECoreMaya.SceneShapeSubSceneOverride : Visibility override fixes (#1320).
- Removed SceneInterface visibility check, as it is now obsolete and causing issues.
- Check visibility for root locations, so bounds aren't incorrectly drawn.
- VDBObject : Fixed infinite recursion in isEqualTo() (#1314).
10.4.3.0 (relative to 10.4.2.1)
========
Features
--------
- IECoreNuke : Add LiveScene support for Nuke (#1310).
- LiveSceneKnob : Knob to interface with LiveScene from Python.
- LiveSceneHolder : Node to hold LiveSceneKnob to provide a Python interface with LiveScene.
- IECoreMaya : Add non-drawable `ieSceneShapeProxy` subclassed from `ieSceneShape` (#1311).
Improvements
------------
- Added string constructor and static `fromString` function to `IECore.MurmurHash`.
Fixes
-----
- IECoreUSD : Fixed error in `pluginfo.json` preventing USD on Windows from loading `IECoreUSD.dll`.
- IECoreScene : Fixed MeshPrimitiveEvaluator assert typo.
Build
-----
- Updated Windows dependencies to 6.2.0.
- Added WITH_OIIO_UTIL option.
10.4.2.1 (relative to 10.4.2.0)
========
Build
-----
- Added Windows package to build artifacts and release binaries.
10.4.2.0 (relative to 10.4.1.2)
========
Improvements
------------
- AlembicScene : Added support for `unsigned char`, `uint16`, `int16` and `uint32` GeomParams, mapping them to and from
`UCharVectorData`, `UShortVectorData`, `ShortVectorData` and `UIntVectorData` PrimitiveVariables respectively (#1297).
- CubicBasis (#1298) :
- Added `Constant` standard basis, for performing stepped interpolation.
- Bound `numCoefficients()` method to Python.
- ShaderNetworkAlgo : Added support for spline parameters with `Constant` basis. These are mapped to the `constant` interpolation type in OSL (#1298).
Fixes
-----
- Spline : Fixed bugs evaluating splines with discontinuities in the basis (#1298).
10.4.1.2 (relative to 10.4.1.1)
========
Build
-----
- Updated to GafferHQ/dependencies 5.1.0 (#1296).
10.4.1.1 (relative to 10.4.1.0)
========
Fixes
-----
- AlembicScene : Fixed hash for animated visibility attribute (#1295).
- Font : Fixed crashes caused by negative `char` values (#1291).
- IECoreMaya : Fixed erroneous display of hidden locations in VP2 (#1290).
- IECoreMaya : Updated SceneShape drawing to respect ancestral visibility overrides (#1290).
- IECoreMaya : Fixed SceneShape isolate selection in maya (#1290).
- USDScene : Fixed loading of primitive variables from UsdGeomPointInstancers (#1292).
10.4.1.0 (relative to 10.4.0.0)
========
Improvements
------------
- IECoreGL::Shader : Added support for 1D and 2D textures in `addUniformParameter()` (#1282).
- USDScene : Added loading of `treatAsPoint` and `treatAsLine` attributes from UsdLux lights (#1283).
- AlembicScene : Added support for visibility attribute (#1288).
Fixes
-----
- Windows : Fixed compilation with MSVC 2019 (#1281).
- USDScene : Fixed shader type for UsdLux lights. It is now `light` rather than `surface` (#1283).
- IECoreGL::Shader : Fixed unnecessary accumulation of memory when uniform values are changed (#1284).
- IECoreGL::Buffer : Fixed export of ScopedBinding class (#1287).
- Version : Fixed compilation error when including `IECore/Version.h` without having previously included `IECore/Export.h`.
10.4.0.0
========
Improvements
------------
- USDScene :
- Added support for reading and writing purpose-based material bindings (#1273).
- Added basic support for loading UsdLux lights (#1256).
- IECoreGL::Shader :
- Added support for buffer samplers (#1264).
- Added support for integer sampler parameters (#1261).
- Adopted stricter default compilation flags (#1266).
- IECoreUSD : Added support for version 22.03 (#1245).
- IECoreMaya : Added support for Maya 2022 and Python 3 (#1235).
- IECoreNuke : Added support for Python 3 (#1238).
- IECoreHoudini : Added support for Houdini 19 and Python 3 (#1242).
- Python : Added support for Python 3.9 in addition to 3.7 (#1229).
Fixes
-----
- PointDistribution : Fixed inconsistent distributions between MacOS and Linux. The Linux distribution is now used on all platforms (#1269).
- Fixed compilation with C++17 (#1269, #1265).
- IECoreGL : Fixed build errors on MacOS (#1271).
- USDScene :
- Fixed loading of asset paths containing `<UDIM>` tokens (#1274).
- Fixed `attributesHash()` to consider UsdLuxLights (#1276).
Breaking Changes
----------------
- PerlinNoise/Turbulence : Removed. We recommend OpenShadingLanguage's `liboslnoise` instead (#1269).
- OpenImageIO : Updated required version to 2.3 (#1246, #1230).
- Alembic : Dropped support for Alembic versions prior to 1.6 (#1240).
- IECoreGL : Removed `PerspectiveCamera.h` header. The implementation was already removed in a Cortex 10.1.0.0 (#1241).
- StringAlgo : Removed `join()` (#1221).
Build
-----
- Updated IE options file to support Nuke 13.x custom dependencies (#1263).
10.3.8.1 (relative to 10.3.8.0)
========
Fixes
---
- IECoreMaya.SceneShapeSubSceneOverride : Visibility override fixes (#1320).
- Removed SceneInterface visibility check, as it is now obsolete and causing issues.
- Check visibility for root locations, so bounds aren't incorrectly drawn.
10.3.8.0 (relative to 10.3.7.2)
========
Features
--------
- IECoreNuke : Add LiveScene support for Nuke (#1310).
- LiveSceneKnob : Knob to interface with LiveScene from Python.
- LiveSceneHolder : Node to hold LiveSceneKnob to provide a Python interface with LiveScene.
- IECoreMaya : Add non-drawable `ieSceneShapeProxy` subclassed from `ieSceneShape` (#1311).
Fixes
-----
- IECoreUSD : Fixed error in `pluginfo.json` preventing USD on Windows from loading `IECoreUSD.dll`.
10.3.7.2 (relative to 10.3.7.1)
========
Fixes
-----
- IECoreMaya : Fixed erroneous display of hidden locations in VP2 (#1290).
- IECoreMaya : Updated SceneShape drawing to respect ancestral visibility overrides (#1290).
- IECoreMaya : Fixed SceneShape isolate selection in maya (#1290).
- USDScene : Fixed loading of primitive variables from UsdGeomPointInstancers (#1292).
10.3.7.1 (relative to 10.3.7.0)
========
Fixes
-----
- Version : Fix compile error when including `IECore/Version.h` without having previously included `IECore/Export.h`
10.3.7.0 (relative to 10.3.6.1)
========
Improvements
------------
- IECoreGL :
- Buffer : Added `buffer()` method, which returns the OpenGL buffer handle (#1272).
- Primitive : Added `getVertexBuffer()` and `getVertexCount()` methods (#1272).
Fixes
-----
- IECoreUSD :
- SceneCacheFileFormat : Added support for `IECore::Object` references when determining primvar type (#1280).
10.3.6.1 (relative to 10.3.6.0)
========
Fixes
-----
- USDScene : Fixed read/write of Color4f parameters, including component connections.
- ShaderNetworkAlgo : Added support for Color4f parameters in `add|removeComponentConnectionAdapters()`.
10.3.6.0 (relative to 10.3.5.1)
========
Improvements
------------
- USDScene : Added support for the `doubleSided` attribute.
10.3.5.1 (relative to 10.3.5.0)
========
Fixes
-----
- USDScene : Fixed compatibility with USD 21.08 (#1259).
10.3.5.0 (relative to 10.3.4.1)
========
Improvements
------------
- USDScene : Registered .usdz file format (#1257).
10.3.4.1 (relative to 10.3.4.0)
========
Build
-----
- IECoreUSD : Support for USD 20.??
10.3.4.0 (relative to 10.3.3.0)
========
Improvements
------------
- USDScene :
- Improved loading speed for stages where the same material is bound to many prims (#1253).
- Added support for `SdfAssetPath` attributes, which are now loaded as StringData containing the resolved asset path (#1252).
Fixes
-----
- CurvesAlgo : Fixed `resamplePrimitiveVariable()` to support vertex-to-varying and varying-to-vertex conversion for V2f primitive variables (#1251).
- USDScene : Fixed loading of materials containing shaders with exposed inputs (#1252).
10.3.3.0 (relative to 10.3.2.1)
========
Improvements
------------
- IECoreGL
- Shader : Added support for 1D samplers (#1243).
- CurvesPrimitive : Added limited support for point drawing mode (#1247).
10.3.2.1 (relative to 10.3.2.0)
========
Fixes
-----
- USDScene :
- Fixed reading of Houdini's paired representation of primvars with varying-length arrays per vertex/face (#1233).
- Fixed reading of custom attributes without an authored value. These are now ignored by `attributesNames()` (#1234).
CI
--
- Windows : Added testing of IECoreUSD (#1233).
10.3.2.0 (relative to 10.3.1.0)
========
Improvements
------------
- ShaderNetwork : Added `_copy` argument to `getShader()` binding (#1228).
- ShaderNetworkAlgo : Added `addComponentConnectionAdapters()` and
`removeComponentConnectionAdapters()` (#1228).
Fixes
-----
- USD :
- Fixed export of shading networks containing component-level connections (#1228).
- Fixed compilation with USD 20.08 (#1226).
Build
-----
- Windows :
- Defaulted to `O2` optimisation level (previously `Ox`) (#1224).
- Added RenderMan display driver to build (#1225).
- CI : Updated to GafferHQ/dependencies 4.0.0 (#1227).
10.3.1.0 (relative to 10.3.0.0)
========
Features
--------
- USDScene (#1214) :
- Added support for reading and writing `IECoreScene::ShaderNetwork` attributes via USDShade.
- Added initial support for writing Arnold globals.
- ShaderNetworkAlgo : Added `expand/collapseSplineParameters()` functions (#1218).
Improvements
------------
- Windows :
- Added IECoreGL support (#1211).
- Added IECoreUSD support (#1204).
- Fixed many build warnings (#1217).
- SceneInterface : Improved error messages for unrecognised file extensions (#1214).
Fixes
-----
- FromHoudiniPolygonsConverter : Fixed bug whereby a mixture of open and closed polygons were converted as a single MeshPrimitive. We consider open polygons to be linear CurvesPrimitives, so they should not be convertable as MeshPrimitives (#1212).
- CurvesPrimitiveEvaluator : Fixed C++17 compilation error (#1216).
- SceneCacheFileFormat : Stopped labelling primvars as custom (#1214).
10.3.0.0 (relative to 10.2.3.0)
========
Improvements
------------
- LinkedScene : Path element separators (forward and backslash) are now platform independent (#1193).
- Paths are internally stored using forward slash only.
- Paths are returned by `readAttribute` in OS-native format.
- IECoreGL : The `render:displayColor` attribute is now passed to the `Cs` parameter of GLSL shaders (#1209).
- IECoreUSD : Added round-tripping of constant USD primvars through Cortex as attributes with a `render:` prefix (#1188).
Fixes
-----
- StreamIndexedIO : Fixed memory leak when passing `NullIfMissing` or `ThrowIfMissing` to `directory()` (#1181).
- Build : Fixed build error when running `scons` via Python 3 (#1184).
- TBB : Reduced reliance on deprecated TBB features (#1194).
- IECoreScene tests : Added missing tests for SceneInterface, TransferSmoothSkinningWeightsOp and TypedPrimitiveOp (#1193).
Breaking Changes
----------------
- IECoreArnold : Removed. This is now maintained as part of `GafferHQ/gaffer` (#1199).
- HeaderGenerator : `machineName`, `systemRelease`, `systemVersion`, may differ from previous versions on Windows. Linux and MacOS are unaffected.
- HeaderGenerator : `nodeName` is no longer converted to all capital letters and may differ from previous versions on Windows. Linux and MacOS are unaffected.
CI
--
- Windows : Added testing of IECoreImage, IECoreScene, IECoreAlembic and IECoreVDB (#1183, #1193, #1205, #1206).
- Migrated build container hosting to the GitHub Container Registry (#1200).
10.2.3.1 (relative to 10.2.3.0)
========
Fixes
----
- FromHoudiniPolygonsConverter : Fixed bug whereby a mixture of open and closed polygons were converted as a single MeshPrimitive. We consider open polygons to be linear CurvesPrimitives, so they should not be convertable as MeshPrimitives.
10.2.3.0 (relative to 10.2.2.0)
========
Improvements
-----
- IECoreUSD SceneCacheFileFormat : Added support for per frame writing (#1178).
- This can be used in conjunction with Houdini Solaris "flush after each frame" write mode.
- It will limit the time samples to the frame range supplied via SdfFileFormatArgs.
- TBB binding : Added Python binding for `tbb_global_control.active_value()` (#1189).
- IECoreNuke : Removed Op menu (#1186).
- IECoreHoudini : Python 3 Support (#1196).
Fixes
----
- IECore.IgnoredExceptions : Fixed python 3 traceback lifetime issue (#1195).
- IECoreAlembic : Fixed reading/writing indexed UVs for curves (#1179).
- IECoreUSD USDScene : Fixed custom attribute hashing (#1197).
Build
----
- CI (#1190) :
- All tests run via GitHub Actions, removed Azure & Appveyor testing.
- Windows : Added testing of IECore.
10.2.2.0 (relative to 10.2.1.0)
========
Improvements
------------
- UniverseBlock : Added `universe()` method (#1177).
Fixes
-----
- ExceptionBinding : Fixed reference counting bug which leaked Python reference objects (#1173).
10.2.1.0 (relative to 10.2.0.1)
========
Improvements
------------
- USDScene : Added basic support for custom attributes (#1172).
- PrimitiveVariable::IndexedView (#1170) :
- Added `isValid()` method.
- Added explicit conversion to bool.
Fixes
-----
- TextureLoader : Fixed alpha handling bug when applying colour transforms (#1169).
- TypedData : Fixed template instantiation warnings on Windows (#1166).
10.2.0.1 (relative to 10.2.0.0)
=======
Fixes
-----
- Maya and Houdini LiveScene : Fixed for updated SceneInterface (#1168)
- IECoreUSD SceneCacheFileFormat (#1163, #1165) :
- Convert between `Cs` and `displayColor` on read/write
- Fixed compilation with GCC 9
10.2.0.0
=======
Improvements
------------
- MurmurHash (#1150) :
- Added support for calling `append()` with all types dispatched by `DataAlgo::dispatch()`.
- Added support for calling `append()` with custom types. This is achieved by providing a `murmurHashAppend( MurmurHash &h, const T& )` overload for the type (#1138).
- Added Python binding for `append( BoolVectorData )`.
- Added Python `__hash__` method to allow MurmurHash to be stored in sets and used in dictionary keys.
- Inlined the constructors (#1130).
- Canceller : Added `elapsedTime()` method (#1159).
- MeshAlgo : Removed unnecessary expansion of UV data in the following functions (#1161) :
- `calculateFaceArea()`
- `calculateFaceTextureArea()`
- MeshPrimitive : Added cancellation support for `createPlane()` and `createSphere()` (#1161).
- Object : Added `canceller` argument to `load()` static method. This is currently only respected by the `Primitive` class (#1161).
- MeshAlgo/CurvesAlgo/PointsAlgo : Added `canceller` arguments to many functions (#1161).
- AlembicScene/USDScene : Added cancellation support for the `readObject()` and `readSet()` methods (#1161).
- IECoreUSD::DataAlgo : Added Python bindings for `role()` and `valueTypeName()` (#1155).
Fixes
-----
- Windows (#1141, #1153) :
- HeaderGenerator : Added missing implementation.
- Arnold output driver : Fixed linking.
- Fixed path separator handling bugs (`:` vs `;`).
- IFFFile/PointDistribution/PDCParticleReader/PDCParticleWriter : Fixed file open mode.
Breaking Changes
----------------
- DisplayDriverServer : Changed type used to represent port number.
- MeshAlgo : Removed `tolerance` and `throwErrors` parameters from `triangulate()` function (#1161).
- SceneInterface : Added `canceller` arguments to some virtual functions (#1161).
Build
-----
- Fixed SConstruct for use with Python 3 (#1153).
- Added `PYTHON_LIB_PATH` build option (#1153).
10.1.8.2 (relative to 10.1.8.1)
========
Fixes
-----
- IECoreUSD SceneCacheFileFormat (#1163, #1165) :
- Convert between `Cs` and `displayColor` on read/write
- Fixed compilation with GCC 9
10.1.8.1 (relative to 10.1.8.0)
========
- FromHoudiniPointsConverter : Revert behaviour #1157 (#1162)
- We continue to export empty PrimitiveVariables when there are no points, because downstream processing often requires the existance of P at a minimum.
- FromHoudiniGeometryConverter : Fixed crash with empty string attribs ranges (#1162)
10.1.8.0 (relative to 10.1.7.0)
========
Improvements
------------
- IECoreUSD : Added SceneCacheDataAlgo and python bindings, primarily for convenience in the unittests (#1152)
Fixes
-----
- DisplayDriverServer : Fixed type used in range check (#1149)
- IECoreImage Tests : Fixed tests when using boost and OIIO on different paths (#1160)
- USDScene :
- Fixed compilation with USD 19.11 (#1148)
- Fixed invalid USD Collection names (#1152)
- USD SceneCache Support (#1152, #1158):
- Fixed compilation with GCC 9
- Fixed memory leak
- Fixed crash when loading CurvesPrimitives with invalid basis
- Fixed loading of SceneCache files as USD References and Sublayers
- Note this introduces a top-level IECoreUSD location to the stage hierarchy. Round-tripping through Cortex removes the extra location, but it will be visible when loading SceneCache files into applications (eg usdview)
- AlembicScene : Fixed crash caused by non-scalar userProperties (#1156)
- FromHoudiniPointsConverter : Fixed crash during attribute transfer for empty particle systems (#1157)
10.1.7.0 (relative to 10.1.6.0)
========
Features
--------
- IECoreUSD : Added USD plugin to load SceneCache (scc, lscc) data (#1142).
Improvements
------------
- DisplayDriverServer : Added mechanism to limit available ports (#1140).
- IECoreUSD::DataAlgo: Added `role()` to convert from Cortex geometric interpretation (#1142).
Fixes
-----
- USDScene : Fixed collections for USD 20.08 (#1139)
Build
-----
- Fixed GitHub CI for recent branch renaming (#1144).
10.1.6.0 (relative to 10.1.5.0)
========
Improvements
------------
- SceneCache : Improved reporting of errors during file close (#1122).
- AlembicScene : Improved warning messages (#1135).
Fixes
-----
- USDScene : Fixed incompatibility with USD 21.02 (#1134).
- AlembicScene : Fixes crashes caused by attempting to load invalid primitive variables (#1135).
Build
-----
- Update to Arnold 6.2.0.0 (#1133).
10.1.5.0 (relative to 10.1.4.0)
========
Improvements
------------
- IECoreArnold : Added support for the `shutter_curve` parameter of Arnold cameras (#1132).
- Environment : Added `IECORE_RTLD_GLOBAL` environment variable to control the use of `RTLD_GLOBAL`
when importing Python modules and loading Maya and Houdini plugins. Set it to `0` to disable the
use of `RTLD_GLOBAL` (#1127).
Build
-----
- Arnold output driver : Removed link to `libai.so`.
10.1.4.0 (relative to 10.1.3.0)
========
Improvements
------------
- AlembicScene : PointsPrimitive variables with Varying interpolation are now conformed to Vertex interpolation on load.
Build
-----
- Automated upload of builds for new releases.
- Added build artifacts for CI builds.
10.1.3.0 (relative to 10.1.2.0)
========
Features
--------
- IECoreScene : Added camera interpolator (#1107)
- IECoreAlembic : Added support for writing cameras (#1107)
- IECoreArnold : Added support for animated camera projections (#1115)
- IECoreUSD : Apply UsdSkel blendshapes and linear blend skinning when loading (#1109).
- Note we are not exposing UsdSkel via the Cortex API, we're just baking the deformation onto the Cortex Primitive.
Improvements
------------
- MurmurHash : Added accessors for internal values (#1104)
- IECoreMaya::FromMayaParticleConverter : Convert "particleRenderType" Maya attribute to a constant string "type" PrimitiveVariable (#1116)
- Note that only 3 values are supported explicitly:
- Points (3) -> "disk"
- Spheres (4) -> "sphere"
- Sprites (5) -> "patch"
- "disk" is used as a fallback for all other values
Build
-----
- Requires SCons 3.0.2+ (for Substfile to avoid `sed` dependency on Windows (#1105)
- GCC 9 compatibility (#1112)
- Added option to control boost python lib suffix (#1108)
- Fixed `pythonVersion()` when LIBPATH contains variables (#1115)
- GitHub CI : Update to Dependencies 2.1.1 (#1110)
- GitHub CI : Test IECoreArnold, IECoreAppleseed and IECoreVDB (#1117)
- Windows CI (#1105, #1114) :
- Disable permissive mode to make MSVC more standards compliant.
- Fixed IECoreUSD for Windows.
10.1.2.0 (relative to 10.1.1.0)
========
Improvements
------------
- USDScene : Added support for reading and writing USD `kind` as a `usd:kind` string attribute (#1101).
- ParameterParser : Added support for parsing escaped flag arguments into StringVectorParameter. Parsing `\-flag` now yields an argument of `-flag` (#1102).
Fixes
-----
- DataTraits : Fixed attempts to instantiate `V[23][ifd]DataBase` classes when constructing data from an element. The appropriate `V[23][ifd]Data` types are used instead (#1099).
Build
-----
- IECoreUSD : Fixed linking in newer GCC versions (#1100).
10.1.1.0
========
Improvements
------------
- IECoreMaya::FromMayaParticleConverter (#1097) :
- Added support for `nParticle` shapes
- Added PrimitiveVariable name remapping capability. Use <mayaName>=<primvarName> syntax within the existing `ieParticleAttributes` space separated list.
- If `radiusPP=width` is specified, the values will be adjusted (as width is expected to be diameter)
- If `rotationPP=orientation` is specified, the euler angles will be converted to quaternions using the default order
- If `rgbPP=Cs is specified, the GeometricInterpretation will be set to Color, though the data exported is still V3fVectorData
- IECoreUSD
- MeshAlgo : Fixed loading of meshes with left handed orientation (#1093)
- USDScene :
- Warn for collection members not below the collection's prim (#1094)
- Added support for loading USD purpose as an attribute called "usd:purpose" (#1095)
Build
-----
- Updated GitHub Actions envvar/path adjustment mechanism (#1096)
- Support Clang 12 (#1096)
- Support Houdini 18.5 (#1098)
10.1.0.0
========
> **Important** : For many years we've used the semantic versioning scheme as defined at http://semver.org. However, in practice, there are external forces (eg clients: artists, producers) who view the major version as a significant milestone rather than a minor ABI break. As a result we've kept the major version at 10 for nearly 3 years now (since Jun 5, 2017), to indicate that we haven't yet fully locked down compatibility on anything.
>
> At IE we've been using Cortex 10 in production for almost 2 years and have rarely (if ever) been bitten by the occasional ABI breaks that have trickled in over that time.
>
> This commit introduces a "milestone" version scheme equivalent to GafferHQ/gaffer. We're setting the current milestone to 10 and bumping the major version to 1, indicating this is indeed an ABI break within the Cortex 10 landscape.
>
> We will now always increment the major version whenever introducing any backwards-incompatible change. We'll bump the milestone version whenever Cortex reaches significant milestones in terms of functionality.
Features
--------
- Build : Improved version numbering scheme (#1058)
- IECore : Added Version.h which provides #defines for the various version parts, a utility macro for composing a compatibility version, version related methods (partially ported from IECore.h), and python bindings for the new methods (#1058)
- Note partial backwards compatibility is provided by including `Version.h` within `IECore.h`
Breaking Changes
----------------
- IECore : Introduced a `milestone` version and decremented `IECore::majorVersion()`. Any conditional logic using the Cortex version (both compile time and runtime) should be updated to accommodate a compatibility version instead.
- The `IECore::*Version*()` methods have move from `IECore.h` to `Version.h` and are now inlined.
10.0.0-a88
==========
Improvements
------------
- SceneCache : Improved reporting of errors during file close (#1122).
10.0.0-a87
==========
Improvements
------------
- IECoreMaya::FromMayaParticleConverter : Convert "particleRenderType" Maya attribute to a constant string "type" PrimitiveVariable (#1116)
- Note that only 3 values are supported explicitly:
- Points (3) -> "disk"
- Spheres (4) -> "sphere"
- Sprites (5) -> "patch"
- "disk" is used as a fallback for all other values
10.0.0-a86
==========
Improvements
------------
- ParameterParser : Added support for parsing escaped flag arguments into StringVectorParameter. Parsing `\-flag` now yields an argument of `-flag` (#1102).
Fixes
-----
- DataTraits : Fixed attempts to instantiate `V[23][ifd]DataBase` classes when constructing data from an element. The appropriate `V[23][ifd]Data` types are used instead (#1099).
10.0.0-a85
==========
Improvements
------------
- IECoreMaya::FromMayaParticleConverter (#1097) :
- Added support for `nParticle` shapes
- Added PrimitiveVariable name remapping capability. Use <mayaName>=<primvarName> syntax within the existing `ieParticleAttributes` space separated list.
- If `radiusPP=width` is specified, the values will be adjusted (as width is expected to be diameter)
- If `rotationPP=orientation` is specified, the euler angles will be converted to quaternions using the default order
- If `rgbPP=Cs is specified, the GeometricInterpretation will be set to Color, though the data exported is still V3fVectorData
Build
-----
- Updated GitHub Actions envvar/path adjustment mechanism (#1096)
- Support Clang 12 (#1096)
- Support Houdini 18.5 (#1098)
10.0.0-a84
==========
Improvements
------------
- IECore
- InternedString : Added `tbb_hasher()` overload and `IECORE_INTERNEDSTRING_WITH_TBB_HASHER` define (#1089)
- IECoreUSD :
- Support reading cameras (#1082)
- Convert "displayColor" to "Cs" and vice versa (#1085)
- Audotmatically generate `__cameras` and `usd:pointInstancers` sets for Camera and UsdGeomPointInstancer objects respectively (#1089)
- Memory and performance improvements for instanced scenes (#1086)
- Memory and performance improvements for reading/writing tags and sets (#1087, #1089)
- Temporarily removed support for arbitrary attributes (#1089)
- This was only partly functional, and will return with improvements in a subsequent release
Fixes
-----
- IECoreImage
- ImageReader : Fixed crash when writing large non-linear images (#1081, #1083)
- Deprecated `readChannel`
- ColorAlgo : Deprecated `transformChannel`
- DisplayDriverServer : Fixed hang when the service was not terminated properly (#1084)
- IECoreHoudini
- CobIOTranslator : Fixed crash in Houdini 18 wehn using OIIO 2.2+ (#1090)
- Note this required dropping support for ptc/pdc files.
10.0.0-a83
==========
Improvements
------------
- IECoreImage::OpenImageIOAlgo : Added `version()` function for checking OIIO version (#1073).
- IECoreUSD (#1070, #1076, #1079, #1080) :
- Added TypeTraits and DataAlgo to handle reading/writing low level data.
- Added PrimitiveAlgo to handle reading/writing PrimitiveVaraibles for all objects.
- Fixed support for writing indexed PrimitiveVariables.
- Fixed interpolation of "normal" PrimitiveVariables.
- Added ObjectAlgo to handle reading/writing geometry objects.
- USDGeomMesh : Added support for animated corners and creases.
- UsdGeomCurves : Improved support for curve type/wrap/basis.
- UsdGeomSphere : Added support for PrimitiveVariables.
- UsdGeomPointInstancer : Aligned PrimitiveVariable naming with `GafferScene::Instancer`.
- USDScene :
- Added support for "visibility" attributes.
- Added user facing warnings when we fail to write objects.
- Improved logic for which UsdPrims represent children by adding support for untyped prims.
- IECoreMaya::FromMayaPlugConverter : Added support for `usedAsColor` flag on Maya attributes to generate Color3fData
Fixes
-----
- IECore::StringAlgo : Fixed interactions between `matchMultiple()` and '*' (#1074).
- IECoreUSD (#1070, #1076, #1079, #1080) :
- PrimitiveAlgo :
- Fixed writing of indexed PrimitiveVariables.
- Fixed interpolation of "normal" PrimitiveVariables.
- ObjectAlgo :
- Fixed support for time varying geometry.
- UsdGeomPoints : Fixed reading of widths and id PrimitiveVariables.
- UsdGeomCurves : Fixed reading of widths PrimitiveVariables.
- UsdGeomSphere : Fixed time sampling for radius.
- UsdGeomPointInstancer :
- Fixed reading of orientations.
- Account for forwarded prototype targets.
- USDScene :
- Avoided use of "default prim" for storing scene tags (ie. sets/collections).
- Fixed attribute hashing.
Build
-----
- Compatibility for OpenEXR 2.4.1 and OpenImageIO 2.2.x (#1073).
- Compatibility for OpenImageIO 1.5.x by limiting functionality (#1078).
- Allow builds with partial boost installations by limiting functionality (#1078).
- Fixed linking issue with boost_wave, which is only used by IECoreGL (#1078).
- Fixed Windows CI (#1075).
10.0.0-a82
==========
Fixes
-----
- IECoreArnold : Fixed console verbosity during startup with recent Arnold versions (#1071).
- IECoreMaya::FnSceneShape: Fixed expansion of locations containing curves (#1072).
10.0.0-a81
==========
Improvements
------------
- IECoreUSD (#1067, #1068) :
- Automatically convert "uv" <-> "st" on read/write.
- Added TypeTraits and DataAlgo to ease conversion between USD and Cortex types (note both are private currently).
- IECoreMaya::FnSceneShape (#1069) :
- Automatically transfer shader assignment from parent to children during expansion.
- Added "addChildCreatedCallback" to enable further customization during expansion.
Fixes
-----
- IECoreUSD : Fixed geometric interpretation (role) for "P" and "uv"/"st" data on points/curves/meshes (#1068).
Build
-----
- IECoreUSD : Simplify CXXFLAGS and fixed test dependencies (#1068).
10.0.0-a80
==========
Fixes
------------
- IECoreMaya : Updated headers to support maya 2020 (#1066).
10.0.0-a79
==========
Improvements
------------
- IECoreGL::Shader : Support shaders with 3D samplers (#1064)
Fixes
-----
- USD : Fixed errors when writing scenes with invalid names (#1062)
10.0.0-a78
==========
Fixes
-----