Lucodivo

/*
 * // NOTE: Oblique View Frustum Depth Projection and Clipping by Eric Lengyel (Terathon Software)
 * Arguments:
 * mat4 perspectiveMat: Perspective matrix that is being used for the rest of the scene
 * vec3 planeNormal_viewSpace: Plane normal in view space. MUST be normalized. This is a normal that points INTO the frustum, NOT one that is generally pointing towards the camera.
 * vec3 planePos_viewSpace: Any position on the plane in view space.
 */
mat4 obliquePerspective(const mat4& perspectiveMat, vec3 planeNormal_viewSpace, vec3 planePos_viewSpace, f32 far) {

  mat4 persp = perspectiveMat;