James

I don't have enough knowledge to give you a complete answer there. Some of it is probably implementation difficulties (its hard to do correctly), some of it is performance concerns...

> I think we ought to have support in at least the common renderers (e.g. GL, DX11) so people (me included) can test and evaluate and work on the feature...

This fork (optionally) gamma corrects using sRGB framebuffers https://github.com/20k/imgui-fork/commit/5a336d30c26d5645fea2bca56b0fac65f3af799c instead of performing the conversions manually in shaders like in the article No gamma correction:  Gamma correction using an sRGB...

So, this is the freetype backend which only supports two hardcoded subpixel modes: LCD, and LCD_V basically, which are both exposed in the API for this fork https://github.com/20k/imgui-fork/blob/master/misc/freetype/imgui_freetype.h#L28. Rotation won't...

I'll have a look at that PR though!