Metal 4 Resources

Overview

Metal 4 requires explicit residency management via MTLResidencySet, removes managed storage mode, and uses GPU addresses for resource binding. Command buffers do NOT retain resources — you must manage lifetimes. All Apple Silicon uses unified memory (CPU and GPU share the same physical memory pool) and Tile-Based Deferred Rendering (TBDR).

Ownership

Owns:

• Buffer / texture / heap creation, storage-mode selection
• General MTLResidencySet semantics — kernel/userspace, attachment levels, validation rules, deferred destruction
• Heap allocation and aliasing patterns
• Purgeable state, texture view pools, view reinterpretation
• GPU lossless compression rules
• Deferred destruction pattern (frame-delayed release queue)