1732c2253b
# Objective - A step towards splitting out bevy_camera from bevy_render ## Solution - Move a shim type into bevy_utils to avoid a dependency cycle - Manually expand Deref/DerefMut to avoid having a bevy_derive dependency so early in the dep tree ## Testing - It compiles
96 lines
2.0 KiB
Rust
96 lines
2.0 KiB
Rust
use crate::define_atomic_id;
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use bevy_utils::WgpuWrapper;
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use core::ops::{Bound, Deref, RangeBounds};
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define_atomic_id!(BufferId);
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#[derive(Clone, Debug)]
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pub struct Buffer {
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id: BufferId,
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value: WgpuWrapper<wgpu::Buffer>,
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}
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impl Buffer {
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#[inline]
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pub fn id(&self) -> BufferId {
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self.id
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}
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pub fn slice(&self, bounds: impl RangeBounds<wgpu::BufferAddress>) -> BufferSlice {
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// need to compute and store this manually because wgpu doesn't export offset and size on wgpu::BufferSlice
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let offset = match bounds.start_bound() {
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Bound::Included(&bound) => bound,
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Bound::Excluded(&bound) => bound + 1,
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Bound::Unbounded => 0,
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};
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let size = match bounds.end_bound() {
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Bound::Included(&bound) => bound + 1,
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Bound::Excluded(&bound) => bound,
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Bound::Unbounded => self.value.size(),
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} - offset;
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BufferSlice {
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id: self.id,
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offset,
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size,
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value: self.value.slice(bounds),
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}
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}
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#[inline]
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pub fn unmap(&self) {
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self.value.unmap();
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}
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}
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impl From<wgpu::Buffer> for Buffer {
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fn from(value: wgpu::Buffer) -> Self {
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Buffer {
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id: BufferId::new(),
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value: WgpuWrapper::new(value),
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}
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}
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}
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impl Deref for Buffer {
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type Target = wgpu::Buffer;
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#[inline]
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fn deref(&self) -> &Self::Target {
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&self.value
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}
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}
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#[derive(Clone, Debug)]
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pub struct BufferSlice<'a> {
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id: BufferId,
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offset: wgpu::BufferAddress,
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value: wgpu::BufferSlice<'a>,
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size: wgpu::BufferAddress,
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}
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impl<'a> BufferSlice<'a> {
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#[inline]
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pub fn id(&self) -> BufferId {
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self.id
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}
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#[inline]
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pub fn offset(&self) -> wgpu::BufferAddress {
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self.offset
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}
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#[inline]
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pub fn size(&self) -> wgpu::BufferAddress {
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self.size
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}
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}
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impl<'a> Deref for BufferSlice<'a> {
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type Target = wgpu::BufferSlice<'a>;
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#[inline]
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fn deref(&self) -> &Self::Target {
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&self.value
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}
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}
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