Houdini 20.5.278 ^hot^: Sidefx

Behind the scenes, Solaris benefited from USD performance optimizations including changes to Geo Clip Sequence LOP defaults maximizing performance at the cost of increased demands on input clip files. The "Track Prim Existence to Set Visibility" option was disabled on USD-output ROPs for better reliability.

This report covers the key features, performance updates, and technical highlights of , the initial release build of the 20.5 production cycle. Executive Summary SideFX Houdini 20.5.278

The changelog indicates that SideFX is continuously refining the user experience, such as fixing the , allowing users to more easily manage keyframes and channels. Conclusion Behind the scenes, Solaris benefited from USD performance

The most disruptive architectural addition debuting in build 20.5.278 is , a ground-up redesign of Houdini’s historical Composite Operators (COPs). Executive Summary The changelog indicates that SideFX is

: While 20.5 pushes Vulkan, it is noted as "buggy" in this specific early build, occasionally causing selection issues for grooming guides in the viewport. Reverting to in preferences is a common troubleshooting fix. Known Issues in Build 278

Fixed rare artifacts that occurred when combining transform motion blur with deformation motion blur on fast-moving Pyro simulations. 3. Simulation Frameworks (Vellum, Pyro, and FLIP)