
During November 2025, Daniel Lacewell developed Cluster Acceleration Structure (CLAS) support for ray tracing in the shader-slang/slang-rhi repository. He designed and implemented C++ APIs to build and query CLAS, laying the groundwork for scalable GPU backends and OptiX integration. His work included creating a validation and testing infrastructure, introducing feature flags, and providing compile-only APIs with debug-layer forwarding. Daniel addressed critical issues identified during testing, such as GET_SIZES misusage, and refactored ABI headers to improve code organization. His contributions in C++ and Slang strengthened test coverage and maintainability, establishing a robust foundation for future backend enhancements.
November 2025 monthly summary: Delivered Cluster Acceleration Structure (CLAS) support in slang-rhi, establishing the foundation for accelerated ray tracing workflows and scalable backends. Implemented APIs to build and query CLAS, created validation/testing infrastructure, and wired backend work for OptiX cluster support. Introduced a feature flag and compile-only API, added getClusterAccelerationStructureSizes and buildClusterAcceleration, and provided default NotAvailable stubs with debug-layer forwarding. Performed targeted refactors and cleanup to improve readability, maintain ABI/header organization, and prepare for future backend enhancements. Fixed critical issues surfaced in testing (GET_SIZES misusage) and a failing slang-rhi test. Strengthened test coverage around cluster builds and validation to reduce risk in production deployments.
November 2025 monthly summary: Delivered Cluster Acceleration Structure (CLAS) support in slang-rhi, establishing the foundation for accelerated ray tracing workflows and scalable backends. Implemented APIs to build and query CLAS, created validation/testing infrastructure, and wired backend work for OptiX cluster support. Introduced a feature flag and compile-only API, added getClusterAccelerationStructureSizes and buildClusterAcceleration, and provided default NotAvailable stubs with debug-layer forwarding. Performed targeted refactors and cleanup to improve readability, maintain ABI/header organization, and prepare for future backend enhancements. Fixed critical issues surfaced in testing (GET_SIZES misusage) and a failing slang-rhi test. Strengthened test coverage around cluster builds and validation to reduce risk in production deployments.

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