26.2 Bounding
Once created, we can ask for the bounds of a given shade under a given
transformation. This can sometimes be infinite.
/* fz_bound_shade: Bound a given shading. shade: The shade to bound. ctm: The transform to apply to the shade before bounding. r: Pointer to storage to put the bounds in. Returns r, updated to contain the bounds for the shading. */ fz_rect *fz_bound_shade(fz_context *ctx, fz_shade *shade, const fz_matrix *ctm, fz_rect *r);