Screen shot method.

[bradphelan]

Would be good to have a clear screen shot API that will capture ImgUI + threepp. This will make it easier for AI agents to code and verify threepp UI's.

I'm currently trying to figure it out. Will get back hopefully with a patch

[markaren]

I don't know the side effects, but calling glReadBuffer(GL_BACK); before glReadPixels will add imgui to the pixels read.

Nevermind, the above has nothing to do with it. But yeah, currently you now have to read the pixels in the next frame (before render.clear()) in order to get imgui + threepp render to be read.