GPU Performance API (GPUPerfAPI) is a powerful library providing access to GPU Performance Counters to help analyze the performance and characteristics of applications using a Radeon GPU.

GPUPerfAPI v3.11 adds support for raytracing counters in Vulkan on RDNA2 (Radeon RX 6000 Series) hardware:

• RayTriTests, and RayBoxTests: These counters collect the number of ray intersections for triangles and boxes, respectively.
• TotalRayTests: This counter collects the aggregated number of ray-box and ray-triangle intersection tests.
• RayTestsPerWave: This counter collects ray intersection test count at a more granular level – per wave.