Enum vulkano::memory::MemoryImportInfo

#[non_exhaustive]
pub enum MemoryImportInfo {
    Fd {
        handle_type: ExternalMemoryHandleType,
        file: File,
    },
}

Parameters to import memory from an external source.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Fd

Fields

handle_type: ExternalMemoryHandleType

file: File

Import memory from a Unix file descriptor.

handle_type must be either ExternalMemoryHandleType::OpaqueFd or ExternalMemoryHandleType::DmaBuf.

Safety

• file must be a valid Unix file descriptor.
• Vulkan will take ownership of file, and once the memory is imported, you must not perform any operations on file nor on any of its clones/duplicates.
• If file was created by the Vulkan API, and handle_type is ExternalMemoryHandleType::OpaqueFd:
  • MemoryAllocateInfo::allocation_size and MemoryAllocateInfo::memory_type_index must match those of the original memory allocation.
  • If the original memory allocation used MemoryAllocateInfo::dedicated_allocation, the imported one must also use it, and the associated buffer or image must be defined identically to the original.
• If file was not created by the Vulkan API, then MemoryAllocateInfo::memory_type_index must be one of the memory types returned by Device::memory_fd_properties.

Trait Implementations

impl Debug for MemoryImportInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.