if (!(flags & ImGuiWindowFlags_NoBackground))
{
ImU32 bg_col = GetColorU32(GetWindowBgColorIdxFromFlags(flags));
bool override_alpha = false;
float alpha = 1.0f;
if (g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasBgAlpha)
{
alpha = g.NextWindowData.BgAlphaVal;
override_alpha = true;
}
if (override_alpha)
bg_col = (bg_col & ~IM_COL32_A_MASK) | (IM_F32_TO_INT8_SAT(alpha) << IM_COL32_A_SHIFT);
window->DrawList->AddRectFilled(window->Pos + ImVec2(0, window->TitleBarHeight()), window->Pos + window->Size, bg_col, window_rounding, (flags & ImGuiWindowFlags_NoTitleBar) ? ImDrawCornerFlags_All : ImDrawCornerFlags_Bot);
}