Struct DispatchIndirectArgs 

#[repr(C)]
pub struct DispatchIndirectArgs {
    pub x: u32,
    pub y: u32,
    pub z: u32,
}

Layout-stable representation of workgroup dispatch dimensions stored in GPU memory.

The struct is repr(C) so that its in-memory byte layout is well-defined and can be written directly to a GPU buffer via wgpu::Queue::write_buffer. It corresponds to the 12-byte VkDispatchIndirectCommand structure (and its equivalents in D3D12 and Metal).

Layout

Bytes	Field	Meaning
0–3	x	Workgroup count along X axis
4–7	y	Workgroup count along Y axis
8–11	z	Workgroup count along Z axis

All values are stored in little-endian byte order when serialised via DispatchIndirectArgs::as_bytes.

Fields

x: u32

Workgroup count along the X dispatch dimension.

y: u32

Workgroup count along the Y dispatch dimension.

z: u32

Workgroup count along the Z dispatch dimension.

Implementations

impl DispatchIndirectArgs

pub fn new(x: u32, y: u32, z: u32) -> Self

Create new dispatch arguments with explicit x / y / z workgroup counts.

pub fn for_1d(total: u32, workgroup_size: u32) -> Self

Create 1-D dispatch arguments for total elements with a workgroup size of workgroup_size.

The Y and Z dimensions are set to 1. If workgroup_size is 0 the X count is also 0.

pub fn as_bytes(&self) -> [u8; 12]

Serialise the struct into a 12-byte little-endian array suitable for writing to a GPU buffer.

Trait Implementations

impl Clone for DispatchIndirectArgs

fn clone(&self) -> DispatchIndirectArgs

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DispatchIndirectArgs

impl Debug for DispatchIndirectArgs

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

Formats the value using the given formatter.

impl Eq for DispatchIndirectArgs

impl PartialEq for DispatchIndirectArgs

fn eq(&self, other: &DispatchIndirectArgs) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for DispatchIndirectArgs