Brecht Van Lommel
04857cc8ef
Previously the storage here was optimized to avoid indirections in BVH2 traversal. This helps improve performance a bit, but makes performance and memory usage of Embree and OptiX BVHs a bit worse also. It also adds code complexity in other parts of the code. Now decouple triangle and curve primitive storage from BVH2. * Reduced peak memory usage on all devices * Bit better performance for OptiX and Embree * Bit worse performance for CUDA * Simplified code: ** Intersection.prim/object now matches ShaderData.prim/object ** No more offset manipulation for mesh displacement before a BVH is built ** Remove primitive packing code and flags for Embree and OptiX ** Curve segments are now stored in a KernelCurve struct * Also happens to fix a bug in baking with incorrect prim/object Fixes T91968, T91770, T91902 Differential Revision: https://developer.blender.org/D12766
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