Function vkMapMemory 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn vkMapMemory(
    device: VkDevice,
    memory: VkDeviceMemory,
    offset: VkDeviceSize,
    size: VkDeviceSize,
    flags: VkMemoryMapFlags,
    ppData: *mut *mut c_void,
) -> VkResult

Map memory for CPU access