Hi, I have 2 things that I just don't get. The first one is how can I make a block face visible from it's behind, just one face! And I know I should disable the culling with GL11, but that just doesn't work for if I don't do tessellator.draw(); which I can't use if using ISBRH. So how do I do that?

And the next problem if I flip my texture using tessellator (you know how that is done) why do I have to disable culling? If I do that everything becomes messed up (glass block becomes strange - you can see it's faces from it's behind).

 

So can someone explain me how to do these things?

You need to reenable culling after you are done with the section you want un-culled.

When I do that the texture doesn't show up from the behind I'm going to try this again but it just doesn't work, I don't know why

Well looks like the universe hates me and trolls me all the time, it's appearing now but in some chunks it doesn't