Struct StagingBuffer

pub struct StagingBuffer {
    raw: Box<dyn DynBuffer>,
    device: Arc<Device>,
    pub(crate) size: BufferSize,
    is_coherent: bool,
    ptr: NonNull<u8>,
}

A temporary buffer, consumed by the command that uses it.

A StagingBuffer is designed for one-shot uploads of data to the GPU. It is always created mapped, and the command that uses it destroys the buffer when it is done.

StagingBuffers can be created with queue_create_staging_buffer and used with queue_write_staging_buffer. They are also used internally by operations like queue_write_texture that need to upload data to the GPU, but that don’t belong to any particular wgpu command buffer.

Used StagingBuffers are accumulated in Device::pending_writes, to be freed once their associated operation’s queue submission has finished execution.

Fields

raw: Box<dyn DynBuffer>

device: Arc<Device>

size: BufferSize

is_coherent: bool

ptr: NonNull<u8>

Implementations

impl StagingBuffer

pub(crate) fn new( device: &Arc<Device>, size: BufferSize, ) -> Result<Self, DeviceError>

pub(crate) unsafe fn ptr(&self) -> NonNull<u8>

SAFETY: You must not call any functions of self until you stopped using the returned pointer.

pub(crate) fn write_zeros(&mut self)

pub(crate) fn write(&mut self, data: &[u8])

pub(crate) unsafe fn write_with_offset( &mut self, data: &[u8], src_offset: isize, dst_offset: isize, size: usize, )

SAFETY: The offsets and size must be in-bounds.

pub(crate) fn flush(self) -> FlushedStagingBuffer

Trait Implementations

impl Debug for StagingBuffer

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

Formats the value using the given formatter.

impl ResourceType for StagingBuffer

const TYPE: &'static str = "StagingBuffer"

impl Send for StagingBuffer

impl Sync for StagingBuffer