mirror of https://github.com/ocornut/imgui
ImDrawList: fixed 1 leak per ImDrawList using the ChannelsSplit() API (via Columns) (fix #318)
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@ -157,12 +157,22 @@ void ImDrawList::ChannelsSplit(int channels_count)
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if (old_channels_count < channels_count)
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_Channels.resize(channels_count);
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_ChannelsCount = channels_count;
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for (int i = 0; i < channels_count; i++)
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// _Channels[] (24 bytes each) hold storage that we'll swap with this->_CmdBuffer/_IdxBuffer
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// The content of _Channels[0] at this point doesn't matter. We clear it to make state tidy in a debugger but we don't strictly need to.
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// When we switch to the next channel, we'll copy _CmdBuffer/_IdxBuffer into _Channels[0] and then _Channels[1] into _CmdBuffer/_IdxBuffer
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memset(&_Channels[0], 0, sizeof(ImDrawChannel));
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for (int i = 1; i < channels_count; i++)
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{
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if (i >= old_channels_count)
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{
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new(&_Channels[i]) ImDrawChannel();
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else if (i > 0)
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_Channels[i].CmdBuffer.resize(0), _Channels[i].IdxBuffer.resize(0);
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}
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else
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{
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_Channels[i].CmdBuffer.resize(0);
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_Channels[i].IdxBuffer.resize(0);
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}
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if (_Channels[i].CmdBuffer.Size == 0)
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{
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ImDrawCmd draw_cmd;
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