Function gvr_sys::gvr_buffer_viewport_list_get_item

pub unsafe extern "C" fn gvr_buffer_viewport_list_get_item(
    viewport_list: *const gvr_buffer_viewport_list, 
    index: usize, 
    viewport: *mut gvr_buffer_viewport
)

Retrieve a buffer viewport entry from a list.

@param viewport_list Pointer to the previously allocated viewport list. @param index Zero-based index of the viewport entry to query. Must be smaller than the list size. @param viewport The buffer viewport structure that will be populated with retrieved data.