memkit_gpu/
buffer.rs

1//! GPU buffer types.
2
3use crate::backend::MkGpuBackend;
4
5/// Buffer usage flags.
6#[derive(Debug, Clone, Copy, PartialEq, Eq)]
7pub struct MkBufferUsage(u32);
8
9impl MkBufferUsage {
10    pub const TRANSFER_SRC: Self = Self(0x0001);
11    pub const TRANSFER_DST: Self = Self(0x0002);
12    pub const UNIFORM: Self = Self(0x0010);
13    pub const STORAGE: Self = Self(0x0020);
14    pub const VERTEX: Self = Self(0x0080);
15    pub const INDEX: Self = Self(0x0040);
16    
17    /// Combine usage flags.
18    pub const fn or(self, other: Self) -> Self {
19        Self(self.0 | other.0)
20    }
21    
22    /// Check if a flag is set.
23    pub const fn contains(self, other: Self) -> bool {
24        (self.0 & other.0) == other.0
25    }
26}
27
28impl std::ops::BitOr for MkBufferUsage {
29    type Output = Self;
30    
31    fn bitor(self, rhs: Self) -> Self::Output {
32        Self(self.0 | rhs.0)
33    }
34}
35
36/// A device-local GPU buffer.
37pub struct MkDeviceBuffer<B: MkGpuBackend> {
38    handle: B::BufferHandle,
39    size: usize,
40    usage: MkBufferUsage,
41}
42
43impl<B: MkGpuBackend> MkDeviceBuffer<B> {
44    /// Create a new device buffer.
45    pub(crate) fn new(handle: B::BufferHandle, size: usize, usage: MkBufferUsage) -> Self {
46        Self { handle, size, usage }
47    }
48
49    /// Get the buffer size in bytes.
50    pub fn size(&self) -> usize {
51        self.size
52    }
53    
54    /// Get the buffer usage flags.
55    pub fn usage(&self) -> MkBufferUsage {
56        self.usage
57    }
58    
59    /// Get the native buffer handle.
60    pub fn handle(&self) -> &B::BufferHandle {
61        &self.handle
62    }
63}
memkit_gpu/buffer.rs

memkit_gpu/
buffer.rs
