Function imgui_sys::ImFontAtlas_CalcCustomRectUV

pub unsafe extern "C" fn ImFontAtlas_CalcCustomRectUV(
    self_: *mut ImFontAtlas, 
    rect: *const CustomRect, 
    out_uv_min: *mut ImVec2, 
    out_uv_max: *mut ImVec2
)