Performs PNG sum filter and casts to byte.

Returns a pointer to the end of array data (iterator compatibility).

Fills the given `path` with the default fill style.

Returns immutable in `data_out`, which contains pixel pointer, stride, and other image properties like size and pixel format. \note Although the data

Returns whether the bit-set has at least on bit in the given range `[start:end)`.

Explicit constructor that constructs this Impl.

Fills a rounded rectangle `rr` (floating point coordinates) with the current fill style.

Just a helper to cast to `BLFile` and call its `is_open()` as this is the only thing we need from C++ API here.

Tests whether the object info represents a valid BLObject, which has a valid Impl, and is reference counted.

Tests whether this `BLVar` instance represents boxed `BLRgba32`.

Called when adding something to the path. The `n` parameter is always considered safe as it would be impossible that a path length would go to half `s

Returns a pointer to the header of `impl`.

Returns the number of glyphs this font face provides.

Returns the first index at which a given `item` can be found in the array, or `SIZE_MAX` if not found.

Converts a single span of pixels of `w` width.

Returns fill-rule, see \ref BLFillRule.

Tests whether the fetch-type is solid.

Returns the next (or the first, if called the first time) non-zero word of the BitSet or zero if the iteration ended. Use `word_index()` to get the i

Removes the given `feature_tag` and its associated value from the settings. Nothing happens if the `feature_tag` is not in the settings (\ref BL_SUCC

Resets cached cardinality to zero, which signalizes that it's not valid.