Checks whether the two give #graphene_size_t are equal.
Initializes a #graphene_size_t using the width and height of the given src.
Initializes a #graphene_size_t using the given width and height.
Linearly interpolates the two given #graphene_size_t using the given interpolation factor.
Scales the components of a #graphene_size_t using the given factor.
A constant pointer to a zero #graphene_size_t, useful for equality checks and interpolations.
A size.