Function skia_bindings::SkBitmap_extractAlpha

pub unsafe extern "C" fn SkBitmap_extractAlpha(
    this: *const SkBitmap, 
    dst: *mut SkBitmap, 
    paint: *const SkPaint, 
    allocator: *mut SkBitmap_Allocator, 
    offset: *mut SkIPoint
) -> bool