File: glsl-const-builtin-faceforward.shader_test

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[require]
GLSL >= 1.20

[vertex shader]
void main()
{
	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
}

[fragment shader]
void main()
{
    const vec2 v1 = vec2(1.0, 2.0);
    const vec2 v2 = vec2(4.0, -5.0);

    const vec2 v3 = faceforward(v1, v1, v2);
    const vec2 v4 = faceforward(v1, v1, v1);

    if (v3 == v1 && v4 == -v1)
        gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
    else
        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
}

[test]
draw rect -1 -1 2 2
probe all rgb 0 1 0