# Objective
Documents the `BufferVec` render resource.
`BufferVec` is a fairly low level object, that will likely be managed by a higher level API (e.g. through [`encase`](https://github.com/bevyengine/bevy/issues/4272)) in the future. For now, since it is still used by some simple
example crates (e.g. [bevy-vertex-pulling](https://github.com/superdump/bevy-vertex-pulling)), it will be helpful
to provide some simple documentation on what `BufferVec` does.
## Solution
I looked through Discord discussion on `BufferVec`, and found [a comment](https://discord.com/channels/691052431525675048/953222550568173580/956596218857918464 ) by @superdump to be particularly helpful, in the general discussion around `encase`.
I have taken care to clarify where the data is stored (host-side), when the device-side buffer is created (through calls to `reserve`), and when data writes from host to device are scheduled (using `write_buffer` calls).
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## Changelog
- Added doc string for `BufferVec` and two of its methods: `reserve` and `write_buffer`.
Co-authored-by: Brian Merchant <bhmerchant@gmail.com>
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