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I can see what you mean - but I would think that an array of int32s representing RGBA would be fairly standard these days. ImGui already draws fonts using textures, if I recall.

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If you're writing the ImGui backend already, don't you practically have to handle texture upload? Why not just upload the image yourself?

I've never found this to be problematic. Long before ImGui even gets involved I've already got stb.h and a spinning textured cube.

I suspect that the majority of ImGui users use one of the included, ready-to-use backends. For example, I use the OpenGL one. I work around the lack of images, handling the textures myself, but it's always struck me as an odd omission.

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