Enum CanvasGpu 

#[non_exhaustive]
pub enum CanvasGpu {
    Cpu,
    Pan,
    Zoom,
}

how a canvas may use the GPU while its view moves

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Cpu

the CPU path in every frame, as without a GPU

Pan

moves by whole pixels at the same scale come from the tiles; another scale is drawn by the CPU at once. Pixel-exact when the content’s raster does not depend on its place

Zoom

also zoom: the tiles are scaled while the gesture runs (a little soft or coarse), the CPU draws the picture sharp a moment after it

Trait Implementations

impl Clone for CanvasGpu

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CanvasGpu

impl Debug for CanvasGpu

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

Formats the value using the given formatter.

impl Default for CanvasGpu

fn default() -> Self

Returns the “default value” for a type.

impl Eq for CanvasGpu

impl PartialEq for CanvasGpu

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CanvasGpu