Function ultraviolet::projection::rh_ydown::orthographic_gl

pub fn orthographic_gl(
    left: f32, 
    right: f32, 
    bottom: f32, 
    top: f32, 
    near: f32, 
    far: f32
) -> Mat4

Orthographic projection matrix for use with OpenGL.

This matrix is meant to be used when the source coordinate space is right-handed and y-down and the destination space is left-handed and y-up, with Z (depth) clip extending from -1.0 (close) to 1.0 (far).