Changing gl.glViewport() causes TextRenderer to stretch and resize text.

Based off of this post about masking, I am using gl.glViewport() to do so.

However, now the TextRenderer displays text relative to the viewport. Meaning it gets stretched out and continuously smaller, which is not what I want. I Included an image of what I mean. Is there a way to fix this?

Which text renderer do you use?

This one.

Nevermind, I was using begindRendering the wrong way.