• Switched to a new version of the API which provides improved flexibility but is not backwards compatible. Please see "Upgrading from Embree 2 to Embree 3" section of documentation for upgrade instructions. In particular, we provide a python script that performs most of the transition work.
• User geometries inside an instanced scene and a top-level scene no longer need to handle instID field of ray differently. They both just need to copy the context.instID into the ray.instID field.
• Support for context filter functions that can get assigned to a ray query.
• User geometries can now invoke filter functions using the rtcFilterIntersection and rtcFilterOcclusion calls.
• Higher flexibility through specifying build quality per scene and geometry.
• Geometry normal uses commonly used right hand rule from now on.
• Added self intersection avoidance to ribbon curves and lines. Applications do not have to implement self intersections workarounds for these primitive types anymore.
• Added support for 4 billion primitives in a single scene.
• Removed RTC_MAX_USER_VERTEX_BUFFERS and RTC_MAX_INDEX_BUFFERS limitation.
• Reduced memory consumption by 192 bytes per instance.
• Fixed some performance issues on AVX-512 architectures.
• Individual Contributor License Agreement (ICLA) and Corporate Contributor License Agreement (CCLA) no longer required to contribute to the project.