Mirroring a drawable buf in DLangUI?

[Dukc]

On Tuesday, 21 November 2017 at 13:45:31 UTC, Dukc wrote:
> My question is, does anybody know a way to draw that image 
> backwards without making another PNG file to do so?

After a lot of code research, I believe the best way for me is to 
use DlangUI helpers in same way as in the new api of the opengl 
example[1], instead of using canvas and abstract drawable 
buffers. If I use orthogonal drawing instead of perspective, it 
should work for 2d icons as well as 3d. I still have to figure 
out how to use multiple textures in the same program through.

1: https://github.com/buggins/dlangui/tree/master/examples/opengl