MTLBufferLayoutStrideDynamic

Static MTLBufferLayoutStrideDynamic 

Source
pub static MTLBufferLayoutStrideDynamic: NSUInteger
Available on crate feature MTLVertexDescriptor only.
Expand description

when a MTLVertexBufferLayoutDescriptor has its stride set to this value, the stride will be dynamic and must be set explicitly when binding a buffer to a render command encoder.

See also Apple’s documentation