Enum AtlasError 

#[non_exhaustive]
pub enum AtlasError {
    TooLarge {
        width: u32,
        height: u32,
        limit: u32,
    },
    BadWrite {
        rect: (u32, u32, u32, u32),
        bytes: usize,
        atlas: (u32, u32),
    },
    UnsupportedUpdate,
}

Why the GPU atlas could not follow the glyph cache.

Every variant means the texture no longer mirrors the cache (a bug or an unsupported device). GpuRenderer latches the first one: it then draws nothing and keeps returning it.

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.

TooLarge

The cache grew beyond the device’s 2D texture limit.

Fields

width: u32

Requested width in texels.

height: u32

Requested height in texels.

limit: u32

max_texture_dimension_2d of the device.

BadWrite

A write does not lie inside the texture, or its pixel count does not match its size.

Fields

rect: (u32, u32, u32, u32)

The write’s (x, y, width, height).

bytes: usize

Bytes supplied.

atlas: (u32, u32)

Current texture (width, height).

UnsupportedUpdate

An update kind this renderer does not know (from a newer densa-text).

Trait Implementations

impl Clone for AtlasError

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 AtlasError

impl Debug for AtlasError

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

Formats the value using the given formatter.

impl Display for AtlasError

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

Formats the value using the given formatter.

impl Eq for AtlasError

impl Error for AtlasError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for AtlasError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for AtlasError