Enum SoftwareBackendError 

#[non_exhaustive]
pub enum SoftwareBackendError {
    NoFont,
    MixedGlyphSizes,
    ZeroScale,
    ZeroGrid,
    Tileset(TilesetError),
}

Errors that can occur when configuring the software backend.

Windowing errors (window creation, event loop) are not represented here: this crate builds renderers, and the loop (retroglyph-window or another windowing integration) reports its own errors.

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.

NoFont

No font was provided and the default-font feature is not enabled.

MixedGlyphSizes

The fonts in the configured FontChain disagree on their glyph size.

ZeroScale

scale was set to 0, which would produce a zero-size pixel buffer.

ZeroGrid

The grid was configured with a zero column or row count, which would produce a zero-size pixel buffer.

Tileset(TilesetError)

Tileset loading failed.

Trait Implementations

impl Debug for SoftwareBackendError

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

Formats the value using the given formatter.

impl Display for SoftwareBackendError

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

Formats the value using the given formatter.

impl Error for SoftwareBackendError

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.