Opengl/glsl/lwjgl either 2d or 3d, not both? - opengl

Question

So I'm trying to render a basic overlay onto my 3D scene, and currently I can either have the 3D scene or the 2D overlay, I cant work out how to get both
In my main method, where render is called, I moved specific render functions to manager classes, so in the main render I call :
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glEnable(GL_COLOR_MATERIAL);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-aspect, aspect, -1, 1, -10, 10);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
material.setColour(new Vector3f(1,1,1));
sLight.getPointLight().setPosition(camera.getPosition());
sLight.setDirection(camera.getForward());
DayCycle.getInstance().update(Time.getDelta());
shader.updateUniforms(transform.getTransformation(), transform.getProjectedTransformation(), material);
//material is a wrapper class for textures and specular value etc
//transform is a matrix wrapper for getting projected transformations, taking the camera position when its created
WorldManager.renderAll(true); //true denotes yes to wireframe mode
InterfaceManager.renderAll();
glfwSwapBuffers(window);
glfwPollEvents();
If i comment out WorldManager.renderAll(), I get the little 2d square in the right part of the screen, If i dont comment it, I get the world render but no little square
WorldManager.renderAll()
public static void renderAll(boolean wireframeMode)
{
RendererUtils.setWireframeMode(wireframeMode);
for (String s : chunks.keySet())
{
Chunk actingChunk = chunks.get(s);
Transform transform = new Transform();
Shader shader = PhongShader.getInstance();
transform.setTranslation(new Vector3f(actingChunk.getLocation().getX() * (Chunk.ChunkSize),0.0f, actingChunk.getLocation().getY() * (Chunk.ChunkSize)));
transform.setScale(1.0f, 50f, 1.0f);
shader.updateUniforms(transform.getTransformation(), transform.getProjectedTransformation(), actingChunk.getMaterial());
shader.bind();
actingChunk.getMesh().draw();
//transform.setRotation(new Vector3f(0,0,0));
}
}
InterfaceManager.renderAll()
public static void renderAll()
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, width, 0, height, -10, 10);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
RendererUtils.setWireframeMode(false);
for (Interface i : interfaces)
{
Transform transform = new Transform();
transform.setTranslation(new Vector3f(0,0,0));
InterfaceShader.getInstance().updateUniforms(transform.getProjectedTransformation());
InterfaceShader.getInstance().bind();
i.getMesh().draw();
}
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
}
When I have WorldManager.renderAll() uncommented, i get a nice sea of triangles (as its meant to look) but no 2D square
With it commented, I get a nice little square where its meant to be and nothing else
Shaders are here : https://pastebin.com/xWaWhQHy because I felt this post was getting too long to have them inlined
What's my problem? I cant figure out where it is
Edit : If i've missed any pertinent code, tell me and i'll upload it to a pastebin
Edit 2 : updated my code here to reflect that i'd removed a shader in interfaceManager to actually get a square to draw at all : https://pastebin.com/pHHDsCvF for the shader code
Edit 3 : Ive determined it's something to do with my interface shaders, If i use PhongShader instead of InterfaceShader then it works exactly how I wanted it to

Answer 1

I can suggest you to modify the code this way:
WorldManager.renderAll(true); //true denotes yes to wireframe mode
glClear(GL_DEPTH_BUFFER_BIT);
InterfaceManager.renderAll();
This way you will clear depth buffer before rendering 2d interface.

Answer 2

The problem was that I was still applying transformations to the vertices after passing them to the shader.
By editing out the transformation (and later scrapping the entire vertex shader) in the InterfaceShader instance, the little squares were appearing in the right place