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Adrià FranchandClaude Fable 5.1
4aafda8e3b
A graphics pipeline the store builds or a compute pipeline a dispatch builds is appended to pipelines.journal next to the shader cache entries, as the materialized result of each stage (the specialized SPIR-V, bindings and push constants) plus the recipe the pipeline was built from: the stages' identities, vertex input layout, descriptor set layout keys and the state fields the Pipeline constructor reads. When a VulkanDevice is created with a window (a headless device waits for its first draw or dispatch, since the window's device usually replaces it first) the journal is loaded and its pipelines are built on a pool of threads while the title loads, so the first draw or dispatch of a configuration seen on an earlier run finds its pipeline resident instead of compiling it on the queue worker. The pipeline stores key on RecompileResult::Identity, a hash of the module words, specialization constants, subgroup width and bindings that is the same on every run (SharedSpirv::ContentHash, computed once per shared module), rather than on the process-lifetime variant ids; a generated stage is keyed like any other. CachedPipeline builds outside the store's mutex and the library parts and link are built outside the library store's mutex, so replay threads and queue workers build in parallel; a concurrent build of the same key keeps the first inserted. A replayed pipeline enters the store at its least recently used end and a full store takes none, and its optimized relink waits for the first draw that binds it, so the title's own pipelines come first in both. The compute pipeline creation moves into VulkanDevice::createComputePipeline, shared by dispatches and the replay. The store key also covers the color component mapping, the depth target's sample count and a depth bias clamp, which the constructor reads. The file names the device it was written for (the properties the driver's pipeline cache file is named by) and starts over for another; a torn tail is cut at a record boundary; two runs sharing the directory take turns on a lock file and keep each other's records; a read failure never starts the file over. A device cancels its replay before it is replaced or destroyed, and a replaced device destroys its pipelines then rather than at the driver's stop. APS5_NO_PIPELINE_JOURNAL=1 disables it; APS5_PIPELINE_JOURNAL_THREADS, APS5_PIPELINE_JOURNAL_ENTRIES (the first recorded), APS5_PIPELINE_STORE_ENTRIES and APS5_PIPELINE_JOURNAL_MAX_MIB bound it; APS5_PROFILE_DRAW prints a [pipeline-journal] summary. APS5_VERIFY_SET_LAYOUTS=1 now also checks a dispatch's set layout against the one described from its shader. The lavapipe test suite, which shares one cache directory, runs with the journal off except for the journal's own tests. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01P6hw3kRAuQdfcU9YCZgaoK