Provides select Rust bindings for Apple MetalKit framework. May be compared to alternative crates metal, objrs_frameworks_metal, metalkit and objrs_frameworks_metal_kit.
Part of the objr expanded universe, distinctive features of this library:
- Fast. This crate is significantly faster than other crates. If you're struggling to get 60fps or ProMotion/adaptive refresh rate speeds, this
is the solution for you.
- The full set of optimization is far too many to list, but the big idea is to either do what native ObjC/Swift applications do, or do something faster.
- Compile-time selectors. Most Rust crates do a runtime lookup for ObjC methods, which involves acquiring a lock and other yucky stuff, either on the first call or every call. Instead, we do what real ObjC compilers do, which is way faster. For more details, see objr
- Smart pointers that provide global ARC inference. Like ARC, you don't need to write manual retain/release calls. Unlike ARC, the compiler usually doesn't need to write them either, meaning lower runtime memory management cost than even native code. For more details, see objr.
- Runtime autorelease eliding, which keeps your objects out of autoreleasepools. For more details, see objr.
- Pointer packing for optional types so they fit in a
u64. For more details, see objr
- Safe APIs. Where possible APIs are designed with safe abstractions to provide familiar guarantees to Rust developers
- Low-level. These bindings assume familiarity with bound APIs and are not documented separately. For details on how they work, see the native documentation.
- Free for noncommercial or "small commercial" use.
I mostly implement the parts of the API I'm using in other projects. At the moment, this consists primarily of MTKTextureLoader.
The objr macro system makes it very ergonomic to add new bindings for specific missing features or new Metal APIs.