gpu_alloc_types/
types.rs

1bitflags::bitflags! {
2    /// Memory properties type.
3    #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
4    #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
5    pub struct MemoryPropertyFlags: u8 {
6        /// This flag is set for device-local memory types.
7        /// Device-local memory is situated "close" to the GPU cores
8        /// and allows for fast access.
9        const DEVICE_LOCAL = 0x01;
10
11        /// This flag is set for host-visible memory types.
12        /// Host-visible memory can be mapped to the host memory range.
13        const HOST_VISIBLE = 0x02;
14
15        /// This flag is set for host-coherent memory types.
16        /// Host-coherent memory does not requires manual invalidation for
17        /// modifications on GPU to become visible on host;
18        /// nor flush for modification on host to become visible on GPU.
19        /// Access synchronization is still required.
20        const HOST_COHERENT = 0x04;
21
22        /// This flag is set for host-cached memory types.
23        /// Host-cached memory uses cache in host memory for faster reads from host.
24        const HOST_CACHED = 0x08;
25
26        /// This flag is set for lazily-allocated memory types.
27        /// Lazily-allocated memory must be used (and only) for transient image attachments.
28        const LAZILY_ALLOCATED = 0x10;
29
30        /// This flag is set for protected memory types.
31        /// Protected memory can be used for writing by protected operations
32        /// and can be read only by protected operations.
33        /// Protected memory cannot be host-visible.
34        /// Implementation must guarantee that there is no way for data to flow
35        /// from protected to unprotected memory.
36        const PROTECTED = 0x20;
37    }
38}
39
40/// Defines memory type.
41#[derive(Clone, Copy, Debug)]
42pub struct MemoryType {
43    /// Heap index of the memory type.
44    pub heap: u32,
45
46    /// Property flags of the memory type.
47    pub props: MemoryPropertyFlags,
48}
49
50/// Defines memory heap.
51#[derive(Clone, Copy, Debug)]
52pub struct MemoryHeap {
53    /// Size of memory heap in bytes.
54    pub size: u64,
55}
gpu_alloc_types/types.rs

gpu_alloc_types/
types.rs
