5-post thread. vkGetShaderInfoAMD available on RADV (will be filing
optimization bugs). DEVICE_UNCACHED_BIT_AMD works on RADV for
low-latency CPU/GPU. Header-free Vulkan: VkPhysicalDeviceLimits
replaced with 63 64-bit values (504 bytes) for direct byte offset.
Next: another beam-racing effort on Linux, separate queue for
present-only to fully decouple {dispatch, swap}.