(No version information available, might only be in Git)
A CairoFilter is used to indicate what filtering should be applied when reading pixel values from patterns. See CairoPattern::setSource() or cairo_pattern_set_source() for indicating the desired filter to be used with a particular pattern.
CairoFilter::FAST A high-performance filter, with quality similar to CairoFilter::NEAREST
CairoFilter::GOODA reasonable-performance filter, with quality similar to CairoFilter::BILINEAR
CairoFilter::BESTThe highest-quality available, performance may not be suitable for interactive use.
CairoFilter::NEARESTNearest-neighbor filtering
CairoFilter::BILINEARLinear interpolation in two dimensions
CairoFilter::GAUSSIANThis filter value is currently unimplemented, and should not be used in current code.