Worked on the KhronosGroup/Vulkan-ValidationLayers repository to enhance validation coverage for Vulkan micromap and ray tracing workflows. Focused on consolidating validation logic by introducing a centralized VkMicromapBuildInfoEXT validation helper, streamlining rule enforcement and improving maintainability. Added missing validation checks for opacity micromap builds, including error reporting, state tracking, and usage count validation. Enforced feature flag checks for acceleration structures to prevent invalid builds and feature misuse. Developed comprehensive unit tests to ensure new validation rules are robust and regression-safe. Utilized C++, graphics programming expertise, and deep knowledge of the Vulkan API to deliver targeted bug fixes and validation improvements.