[1.11.2] There is no Z depth

[Minebot1708]

Here I draw a polygon on the side of another polygon in the event RenderSpecificHandEvent. It must be turned sideways to the player

       buf.begin(GL11.GL_POLYGON, DefaultVertexFormats.POSITION);
       buf.pos(0.8D, -0.45D, -1.5D).endVertex();
       buf.pos(0.8D, 0.45D, -1.5D).endVertex();
       buf.pos(0.8D, 0.45D, -2D).endVertex();
       buf.pos(0.8D, -0.45D, -2D).endVertex();
       tes.draw();

But for some reason he turned face (red polygons)

Spoiler

Why is the polygon not drawn in depth? How to fix it?

Edited August 19, 2017 by Minebot1708

[Draco18s]

I love how your screenshot is completely useless (the fuck does "he turned face" (this isn't even a sentence!) and this cropped screen shot have to do with each other?).

Fuck if I can tell what's wrong with your code snippet based on that screenshot.