glm::ortho doesnt display anything

Question

I need an orthographic projection matrix in OpenGL and I use glm for it like this:

glm::ortho(0.0f, width, 0.0f, height, zNear, zFar);

But this does not produce anything and I can't see anything on the screen. And yes, all of these values are floats.

I suspected it might be the view matrix, but I can render stuff when I use a perspective projection matrix.

Am I passing the wrong arguments? What should I do? Thanks.

Answer 1

As it was mentioned by @Rabbid76 in the comments:

float aspect = (float)width/height;
glm::ortho(-aspect, aspect, -1.0f, 1.0f, zNear, zFar);

Is the solution to my problem.