Sets a set of custom font rendering options for the cairo_t.
Rendering options are derived by merging these options with the
options derived from underlying surface; if the value in options
has a default value (like CAIRO_ANTIALIAS_DEFAULT), then the value
from the surface is used.
Sets a set of custom font rendering options for the cairo_t. Rendering options are derived by merging these options with the options derived from underlying surface; if the value in options has a default value (like CAIRO_ANTIALIAS_DEFAULT), then the value from the surface is used.