[require]
GLSL >= 1.20

[vertex shader file]
glsl-mvp.vert

[fragment shader]
#version 120
void main()
{
    const vec2 v = normalize(vec2(1.0, 1.0));

    /* Attempt to normalize the zero vector.  The specification is unclear
     * about the results, but ATI returns the zero vector.  At any rate, the
     * compiler should not crash.
     */
    const vec2 z = normalize(vec2(0.0, 0.0));
    gl_FragColor = vec4(v.x, z.x, z.y, 1.0);
}

[test]
clear color 0.0 0.0 0.0 0.0
clear
ortho
draw rect 10 10 10 10
probe rgb 15 15 0.7071067811865475 0.0 0.0