use crate::{define_atomic_id, render_resource::resource_macros::render_resource_wrapper};
use std::ops::{Bound, Deref, RangeBounds};
define_atomic_id!(BufferId);
render_resource_wrapper!(ErasedBuffer, wgpu::Buffer);
#[derive(Clone, Debug)]
pub struct Buffer {
id: BufferId,
value: ErasedBuffer,
}
impl Buffer {
#[inline]
pub fn id(&self) -> BufferId {
self.id
}
pub fn slice(&self, bounds: impl RangeBounds<wgpu::BufferAddress>) -> BufferSlice {
BufferSlice {
id: self.id,
offset: match bounds.start_bound() {
Bound::Included(&bound) => bound,
Bound::Excluded(&bound) => bound + 1,
Bound::Unbounded => 0,
},
value: self.value.slice(bounds),
}
}
#[inline]
pub fn unmap(&self) {
self.value.unmap();
}
}
impl From<wgpu::Buffer> for Buffer {
fn from(value: wgpu::Buffer) -> Self {
Buffer {
id: BufferId::new(),
value: ErasedBuffer::new(value),
}
}
}
impl Deref for Buffer {
type Target = wgpu::Buffer;
#[inline]
fn deref(&self) -> &Self::Target {
&self.value
}
}
#[derive(Clone, Debug)]
pub struct BufferSlice<'a> {
id: BufferId,
offset: wgpu::BufferAddress,
value: wgpu::BufferSlice<'a>,
}
impl<'a> BufferSlice<'a> {
#[inline]
pub fn id(&self) -> BufferId {
self.id
}
#[inline]
pub fn offset(&self) -> wgpu::BufferAddress {
self.offset
}
}
impl<'a> Deref for BufferSlice<'a> {
type Target = wgpu::BufferSlice<'a>;
#[inline]
fn deref(&self) -> &Self::Target {
&self.value
}
}