Struct GpuViewInfo 

#[non_exhaustive]
pub struct GpuViewInfo {

    pub device: bool,
    pub output: bool,
    pub level: Option<Level>,
    pub generation: u32,
    pub apart: bool,
    pub attaches: u32,
    pub detaches: u32,
    pub frames: u64,
    pub draw_us: u64,
    pub reads: u64,
    pub read_us: u64,
    pub read_frame: u64,
    pub held: u64,
    pub size: (u32, u32),
    pub error: Option<String>,
}

what a view does now (Ui::gpu_view_info; tests and measurements)

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

device: bool

its content is attached to a device: its frames come from the GPU

output: bool

that device is the UI output’s (else the views’ own: no output in this run)

level: Option<Level>

the device’s level

generation: u32

the device’s generation (a new one after a lost device; 0: none)

apart: bool

the output’s render pass drew it in the window’s last frame (else the CPU copies the frame read back)

attaches: u32

the content attached and detached so far

detaches: u32

frames: u64

frames drawn, the CPU time recording and submitting them took (us)

draw_us: u64

reads: u64

frames read back into the CPU’s copy, the time that took (us: submit, wait, copy)

read_us: u64

read_frame: u64

(G5e2) the newest frame read back into the CPU’s copy (1, 2, ..; 0: none): the framebuffer can hold the view’s newest frame once it equals frames (in the browser a read-back comes later)

held: u64

(G5e3) frames that had to wait: a new ver (size, device) came while the view’s window had not shown its last frame yet, so the content was not asked to draw then (each ver counted once; the newest is drawn when the window’s frame has arrived)

size: (u32, u32)

the size of its target (px)

error: Option<String>

what the last failure said

Trait Implementations

impl Clone for GpuViewInfo

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GpuViewInfo

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

Formats the value using the given formatter.

impl Default for GpuViewInfo

fn default() -> Self

Returns the “default value” for a type.