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added convenience, build buffer from slice, leveraging rust generics … #243

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added convenience, build buffer from slice, leveraging rust generics … #243

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added convenience, build buffer from slice, leveraging rust generics …
Sep 20, 2022
3dc3727
Update src/device.rs
dobkeratops Sep 20, 2022
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9 changes: 3 additions & 6 deletions examples/compute/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -19,17 +19,14 @@ fn main() {
24, 25, 26, 27, 28, 29, 30,
];

let buffer = device.new_buffer_with_data(
unsafe { mem::transmute(data.as_ptr()) },
(data.len() * mem::size_of::<u32>()) as u64,
let buffer = device.new_buffer_from_slice(&data[..],
MTLResourceOptions::CPUCacheModeDefaultCache,
);

let sum = {
let data = [0u32];
device.new_buffer_with_data(
unsafe { mem::transmute(data.as_ptr()) },
(data.len() * mem::size_of::<u32>()) as u64,
device.new_buffer_from_slice(
&data[..],
MTLResourceOptions::CPUCacheModeDefaultCache,
)
};
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12 changes: 12 additions & 0 deletions src/device.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1965,6 +1965,18 @@ impl DeviceRef {
options:options]
}
}

pub fn new_buffer_from_slice<T:Copy>(
&self,
data:&[T],
options:MTLResourceOptions
)-> Buffer {
self.new_buffer_with_data(
data.as_ptr().cast::<std::ffi::c_void>(),
(data.len() * std::mem::size_of::<T>()) as NSUInteger,
options
)
}

pub fn new_texture(&self, descriptor: &TextureDescriptorRef) -> Texture {
unsafe { msg_send![self, newTextureWithDescriptor: descriptor] }
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