kAt(viewMatrix, eyePosition, vec3.fromValues(0, 0, 0), vec3.fromValues(0, 1, 0));

        let viewProjMatrix = mat4.create();
        mat4.multiply(viewProjMatrix, projMatrix, viewMatrix);

        window.onresize = function() {
            app.resize(window.innerWidth, window.innerHeight);
            gBuffer.resize();

            mat4.perspective(projMatrix, Math.PI / 2, app.canvas.width / app.canvas.height, 0.1, 10.0);
            mat4.multiply(viewProjMatrix, projMatrix, viewMatrix);

            for 