Crash in RenderGlyphAndGetInfo of Imgui_freetype with freetype 2.11

[metarutaiga]

Version/Branch of Dear ImGui:

Version: 1.84
Branch: docking

Back-end/Renderer/Compiler/OS

Back-ends: Custom
Compiler: Visual Studio 2019
Operating System: Windows 10

My Issue/Question:

imgui/misc/freetype/imgui_freetype.cpp

Lines 541 to 542 in f99fe72

	const FT_Bitmap* ft_bitmap = src_tmp.Font.RenderGlyphAndGetInfo(&src_glyph.Info);
	IM_ASSERT(ft_bitmap);

Crash here because FT_Render_Glyph reported Unimplemented_Feature error in some fonts since freetype 2.11

imgui/misc/freetype/imgui_freetype.cpp

Line 254 in f99fe72

FT_Error error = FT_Render_Glyph(slot, RenderMode);

It maybe a bug in freetype 2.11.

I found the two fonts that it can show this bug.

• msgothic.ttc
• mingliu.ttc

Edit : Someone also has the same problem.
https://gitlab.freedesktop.org/freetype/freetype/-/issues/1076

[ocornut]

Pushed a fix on imgui_freetype side for it, thank you.
As per #4145 I'd be curious to find which glyph it is failing on?