Struct SizeCache 

pub struct SizeCache {
    pub buf_a: Buffer,
    pub buf_b: Buffer,
    pub staging_buf: Buffer,
    pub twiddle_buf: Buffer,
    pub data_bytes: u64,
    pub stage_bgs: Vec<BindGroup>,
    pub stage_bg_r2: Option<BindGroup>,
    pub result_in_b: bool,
    pub wg_n2: u32,
    pub wg_r4: u32,
}

Pre-allocated GPU resources for a specific FFT size.

Fields

buf_a: Buffer

buf_b: Buffer

staging_buf: Buffer

twiddle_buf: Buffer

data_bytes: u64

stage_bgs: Vec<BindGroup>

R4 stages (R4 mode) or R2 stages (legacy with_shader mode).

stage_bg_r2: Option<BindGroup>

Final R2 stage when log₂N is odd (R4 mode only).

result_in_b: bool

wg_n2: u32

Workgroup count for the main-stage dispatch (N/4 in R4 mode, N/2 in legacy mode).

wg_r4: u32

Workgroup count for R4 dispatch (N/4). 0 in legacy mode.

Trait Implementations

impl Clone for SizeCache

fn clone(&self) -> SizeCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SizeCache

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

Formats the value using the given formatter.