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bitflags::bitflags! {↩
/// Memory properties type.↩
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]↩
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]↩
pub struct MemoryPropertyFlags: u8 {↩
/// This flag is set for device-local memory types.↩
/// Device-local memory is situated "close" to the GPU cores↩
/// and allows for fast access.↩
const DEVICE_LOCAL = 0x01;↩
↩
/// This flag is set for host-visible memory types.↩
/// Host-visible memory can be mapped to the host memory range.↩
const HOST_VISIBLE = 0x02;↩
↩
/// This flag is set for host-coherent memory types.↩
/// Host-coherent memory does not requires manual invalidation for↩
/// modifications on GPU to become visible on host;↩
/// nor flush for modification on host to become visible on GPU.↩
/// Access synchronization is still required.↩
const HOST_COHERENT = 0x04;↩
↩
/// This flag is set for host-cached memory types.↩
/// Host-cached memory uses cache in host memory for faster reads from host.↩
const HOST_CACHED = 0x08;↩
↩
/// This flag is set for lazily-allocated memory types.↩
/// Lazily-allocated memory must be used (and only) for transient image attachments.↩
const LAZILY_ALLOCATED = 0x10;↩
↩
/// This flag is set for protected memory types.↩
/// Protected memory can be used for writing by protected operations↩
/// and can be read only by protected operations.↩
/// Protected memory cannot be host-visible.↩
/// Implementation must guarantee that there is no way for data to flow↩
/// from protected to unprotected memory.↩
const PROTECTED = 0x20;↩
}↩
}↩
↩
/// Defines memory type.↩
#[derive(Clone, Copy, Debug)]↩
pub struct MemoryType {↩
/// Heap index of the memory type.↩
pub heap: u32,↩
↩
/// Property flags of the memory type.↩
pub props: MemoryPropertyFlags,↩
}↩
↩
/// Defines memory heap.↩
#[derive(Clone, Copy, Debug)]↩
pub struct MemoryHeap {↩
/// Size of memory heap in bytes.↩
pub size: u64,↩
}↩