Due to shader global scope emulation via class interface, global constant arrays in shaders are allocated in per-thread shader local memory. To reduce memory pressure, placing these constant arrays inside function scope will ensure they only reside within device constant memory. This results in a tangible 1.5-2x performance uplift for the specific shaders affected. Authored by Apple: Michael Parkin-White Ref T96261 Reviewed By: fclem Maniphest Tasks: T96261 Differential Revision: https://developer.blender.org/D17089