| Value | Meaning |
|---|---|
| CAIRO_FILTER_FAST | A high-performance filter, with quality similar to %CAIRO_FILTER_NEAREST |
| CAIRO_FILTER_GOOD | A reasonable-performance filter, with quality similar to %CAIRO_FILTER_BILINEAR |
| CAIRO_FILTER_BEST | The highest-quality available, performance may not be suitable for interactive use. |
| CAIRO_FILTER_NEAREST | Nearest-neighbor filtering |
| CAIRO_FILTER_BILINEAR | Linear interpolation in two dimensions |
| CAIRO_FILTER_GAUSSIAN | This filter value is currently unimplemented, and should not be used in current code. |
cairo_filter_t is used to indicate what filtering should be applied when reading pixel values from patterns. See cairo_pattern_set_source() for indicating the desired filter to be used with a particular pattern.