Function mupdf_sys::fz_new_cal_gray_colorspace

pub unsafe extern "C" fn fz_new_cal_gray_colorspace(
    ctx: *mut fz_context, 
    wp: *mut f32, 
    bp: *mut f32, 
    gamma: f32
) -> *mut fz_colorspace

Create a calibrated gray colorspace.

The returned reference should be dropped when it is finished with.

Colorspaces are immutable once created.