@ -70,13 +70,13 @@ To import the extension trait, put this line somewhere near the top of `lib.rs`.
use wgpu::util::DeviceExt;
```
You'll note that we're using [bytemuck](https://docs.rs/bytemuck/1.2.0/bytemuck/) to cast our `VERTICES` as a `&[u8]`. The `create_buffer_init()` method expects a `&[u8]`, and `bytemuck::cast_slice` does that for us. Add the following to your `Cargo.toml`.
You'll note that we're using [bytemuck](https://docs.rs/bytemuck/latest/bytemuck/) to cast our `VERTICES` as a `&[u8]`. The `create_buffer_init()` method expects a `&[u8]`, and `bytemuck::cast_slice` does that for us. Add the following to your `Cargo.toml`.
```toml
bytemuck = { version = "1.4", features = [ "derive" ] }
bytemuck = { version = "1.12", features = [ "derive" ] }
```
We're also going to need to implement two traits to get `bytemuck` to work. These are [bytemuck::Pod](https://docs.rs/bytemuck/1.3.0/bytemuck/trait.Pod.html) and [bytemuck::Zeroable](https://docs.rs/bytemuck/1.3.0/bytemuck/trait.Zeroable.html). `Pod` indicates that our `Vertex` is "Plain Old Data", and thus can be interpreted as a `&[u8]`. `Zeroable` indicates that we can use `std::mem::zeroed()`. We can modify our `Vertex` struct to derive these methods.
We're also going to need to implement two traits to get `bytemuck` to work. These are [bytemuck::Pod](https://docs.rs/bytemuck/latest/bytemuck/trait.Pod.html) and [bytemuck::Zeroable](https://docs.rs/bytemuck/latest/bytemuck/trait.Zeroable.html). `Pod` indicates that our `Vertex` is "Plain Old Data", and thus can be interpreted as a `&[u8]`. `Zeroable` indicates that we can use `std::mem::zeroed()`. We can modify our `Vertex` struct to derive these methods.
Benjamin Hansen
1 year ago