tools/validate_shader_cache.py reads every module and its reflection from the pack and the loose files, says how many the game would refuse and translate again, runs spirv-val on the others and groups what it refuses by message. It writes nothing to the cache. tests/validate_shader_cache_test.py checks it on a made-up cache.
Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>