How to use a bitmap font?

[XiaofengdiZhu]

I already have a rasterized bitmap font in the application, and it seems that ImGui rasterize the ttf font to a bitmap too.
If ImGui uses my bitmap font, I will not have to provide the ttf font only for ImGui, and ImGui will not have to rasterize ttf font in runtime.

[ocornut]

There an old issue related to that #2127. It should be possible although not really documented.

I am currently reworking the font system and this is among my goal that this becomes more easily possible.

[XiaofengdiZhu]

Thank you, I will take a try. I hope it will not crash~