Struct IndirectParametersBuffer

pub struct IndirectParametersBuffer(pub BufferVec<IndirectParameters>);

The buffer containing the list of IndirectParameters, for draw commands.

Tuple Fields

0: BufferVec<IndirectParameters>

Implementations

impl IndirectParametersBuffer

pub fn new() -> IndirectParametersBuffer

Creates the indirect parameters buffer.

Methods from Deref<Target = BufferVec<IndirectParameters>>

pub fn buffer(&self) -> Option<&Buffer>

Returns a handle to the buffer, if the data has been uploaded.

pub fn binding(&self) -> Option<BindingResource<'_>>

Returns the binding for the buffer if the data has been uploaded.

pub fn capacity(&self) -> usize

Returns the amount of space that the GPU will use before reallocating.

pub fn len(&self) -> usize

Returns the number of items that have been pushed to this buffer.

pub fn is_empty(&self) -> bool

Returns true if the buffer is empty.

pub fn push(&mut self, value: T) -> usize

Adds a new value and returns its index.

pub fn set_label(&mut self, label: Option<&str>)

Changes the debugging label of the buffer.

The next time the buffer is updated (via [reserve]), Bevy will inform the driver of the new label.

pub fn get_label(&self) -> Option<&str>

Returns the label

pub fn reserve(&mut self, capacity: usize, device: &RenderDevice)

Creates a Buffer on the RenderDevice with size at least std::mem::size_of::<T>() * capacity, unless such a buffer already exists.

If a Buffer exists, but is too small, references to it will be discarded, and a new Buffer will be created. Any previously created Buffers that are no longer referenced will be deleted by the RenderDevice once it is done using them (typically 1-2 frames).

In addition to any BufferUsages provided when the BufferVec was created, the buffer on the RenderDevice is marked as BufferUsages::COPY_DST.

pub fn write_buffer(&mut self, device: &RenderDevice, queue: &RenderQueue)

Queues writing of data from system RAM to VRAM using the RenderDevice and the provided RenderQueue.

Before queuing the write, a reserve operation is executed.

pub fn truncate(&mut self, len: usize)

Reduces the length of the buffer.

pub fn clear(&mut self)

Removes all elements from the buffer.

Trait Implementations

impl Default for IndirectParametersBuffer

fn default() -> Self

Returns the “default value” for a type.

impl Deref for IndirectParametersBuffer

type Target = BufferVec<IndirectParameters>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl DerefMut for IndirectParametersBuffer

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl Resource for IndirectParametersBuffer

where Self: Send + Sync + 'static,