The objrs_frameworks_metal crate provides bindings for Apple's Metal framework. This crate is far from complete, but has some partial bindings for the following Metal types:
MTLBlitCommandEncoder.MTLBuffer.MTLCommandBuffer.MTLCommandEncoder.MTLCompileOptions.MTLDevice.MTLDrawable.MTLLibrary.MTLPixelFormat.MTLRenderCommandEncoder.MTLRenderPass.MTLRenderPipeline.
See the COPYRIGHT file. objrs is triple-licensed under the Apache License 2.0, MIT License, and Mozilla Public License 2.0 terms.