dope-core 0.9.1

The manifold runtime
Documentation 
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use std::ptr::NonNull;

use crate::backend::Backend;
use crate::backend::ops::buffers::BufferBackend;

use super::DriverContext;

pub trait ProvidedBuffers {
    fn buffer_group(&self) -> u16;
    fn buffer_len(&self) -> usize;
    /// # Safety
    /// `bid` must name a live buffer uniquely owned by the caller.
    unsafe fn release(&mut self, bid: u16);
    /// # Safety
    /// `bid` must name a live buffer and `len` must fit its allocation.
    unsafe fn buffer_ptr_len(&mut self, len: u32, bid: u16) -> (NonNull<u8>, usize);
}

impl ProvidedBuffers for DriverContext<'_, '_> {
    fn buffer_group(&self) -> u16 {
        <Backend as BufferBackend>::buffer_group(self.backend_ref())
    }

    fn buffer_len(&self) -> usize {
        <Backend as BufferBackend>::buffer_len(self.backend_ref())
    }

    unsafe fn release(&mut self, bid: u16) {
        unsafe { <Backend as BufferBackend>::release_buffer(self.backend(), bid) };
    }

    unsafe fn buffer_ptr_len(&mut self, len: u32, bid: u16) -> (NonNull<u8>, usize) {
        unsafe { <Backend as BufferBackend>::buffer_ptr_len(self.backend_ref(), len, bid) }
    }
}