ImDrawListClipper: avoid over reserving memory.

4 years ago · 2bf5ca7ef2
parent d6a2f7e95e
commit 2bf5ca7ef2
1 changed files with 3 additions and 0 deletions
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@ -1429,7 +1429,10 @@ void ImDrawListSplitter::Split(ImDrawList* draw_list, int channels_count)
    IM_ASSERT(_Current == 0 && _Count <= 1 && "Nested channel splitting is not supported. Please use separate instances of ImDrawListSplitter.");
    int old_channels_count = _Channels.Size;
    if (old_channels_count < channels_count)
+    {
+        _Channels.reserve(channels_count); // Avoid over reserving since this is likely to stay stable
        _Channels.resize(channels_count);
+    }
    _Count = channels_count;

    // Channels[] (24/32 bytes each) hold storage that we'll swap with draw_list->_CmdBuffer/_IdxBuffer