### [IMPORTANT] Obi 7 is a major update. If you're updating from an older version, it will require you to redo the setup most of your existing Obi-related functionality. It is recommended to use Obi 7 on new projects only, or if you must update an existing one, plan accordingly and set aside some time to perform the update.

# Change Log

All notable changes to “Obi - Advanced cloth for Unity” will be documented in this file.

## [7.1]

### Added

- Solvers can now optionally enforce boundary limits, so that particles can't go outside those limits. This is often more convenient than manually placing invisible colliders for the same purpose.

- Dynamic ObiParticleAttachments now have a "projection" boolean, when enabled it forces the rendered position/orientation of the attached particles to match that of the attachment location, even if the constraint doesn't fully converge. This is useful to avoid visual gaps under extreme conditions.

- Actors now have a "mass scale" parameter, that multiplies the mass of all particles in the blueprinyt at the time of loading it into the solver. This is handy to create actors of different masses without the need to create a new blueprint.

- ObiForceZones now have a "color" parameter, that can be used to change the color of particles entering the zone.

### Changed

- Improved performance for large amounts of static colliders: they're not processed at all during ObiSolver.Update().

## [7.0.5]

## Fixed

- Memory leak in ObiParticleStitcher.

- InvalidOperationException in Burst backend when having simulateWhenInvisible = false and solver not seen by any camera.

- NullRefException when instantiating a ObiTearableCloth with a disabled ObiTearableClothRenderer component.

## [7.0.4]

### Fixed

- Blueprint rotation parameter wasn't making any actual effect on blueprint generation.

- Property painting in the blueprint editor didn't work correctly with blueprint rotation values other than zero.

- Bug in skinned cloth that caused index out of bounds exception when having less bone influences than particle influences in specific situations.

- Bug that caused inactive particles to still be rendered by ObiInstancedParticleRenderer.

- Blueprint particle property texture export not working sometimes (due to GL.LoadOrtho bug in Unity)

- Bug that preventing pin constraints' break threshold from working when using the Compute backend.

## [7.0.3]

### Added

- Object layer support for all renderers.

- New "Synchronous Fixed" solver synchronization mode, similar to Obi 6, offers tighter integration with rigidbody physics.

### Fixed

- Bug in skinned cloth that caused index out of bounds exception when having less bone influences than particle influences in specific situations.

## [7.0.2]

### Fixed

- Solvers not placed at the scene origin would result in actors having incorrect motion blur in HDRP.

- Fixed issue when disabling all solvers and colliders simultaneously: ipon re-enabling them, the colliders would be ignored.

## [7.0.1]

### Added

- Render layer mask support to all cloth renderers and particle renderers.

### Fixed

- Having a ObiParticleRenderer with no material applied resulted in a exception in builds due GetInstanceID() returning 0 in editor but raising a nullref exception in the build.

## [7.0]

### Added

- Compute shader based GPU solver backend.

- Support for automatic decimation in all cloth blueprints.

- Support for non-manifold meshes in cloth blueprints.

- Greatly simplified cloth proxy system.

- More efficient solver update cycle, that also removes the need to have ObiUpdater components.

### Changed

- Rendering system is now fully multithreaded, integrated with the solver backend in use.

### Removed

- Native library based 'Oni' solver backend.

- ObiUpdater and all derived classes have been removed.

Obi Cloth