Enum RasterQuality 

pub enum RasterQuality {
    Quality,
    Speed,
}

Rasterization precision / speed trade-off for the vello_cpu pipeline.

vello_cpu ships two compositing pipelines: a higher-precision f32 pipeline and a faster u8 pipeline. Both are compiled in; this selects which one a given render uses.

The default is RasterQuality::Quality (the f32 pipeline), which keeps output byte-identical to historical PDFluent releases. RasterQuality::Speed is an explicit, caller-controlled opt-in: on content-heavy pages it renders ~1.4–1.6× faster, at the cost of sub-perceptual rounding differences wherever alpha blending, anti-aliasing or images compose (8-bit vs f32 compositing precision). Pages built only from opaque vector fills are byte-identical in both modes.

Variants

Quality

Higher-precision f32 compositing pipeline. Default; matches historical output byte-for-byte.

Speed

Faster u8 compositing pipeline (~1.4–1.6× on content-heavy pages). Opt-in; output differs from RasterQuality::Quality by sub-perceptual rounding where blending/AA/images compose.

Trait Implementations

impl Clone for RasterQuality

fn clone(&self) -> RasterQuality

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RasterQuality

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

Formats the value using the given formatter.

impl Default for RasterQuality

fn default() -> RasterQuality

Returns the “default value” for a type.

impl PartialEq for RasterQuality

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for RasterQuality

impl Eq for RasterQuality

impl StructuralPartialEq for RasterQuality