[require]
GLSL >= 1.10

[vertex shader passthrough]

[fragment shader]
uniform vec4 a, b;

void main()
{
  vec4 color;

  if (a == b) {
    color = vec4(0, 1, 0, 1);
  } else {
    color = vec4(1, 0, 0, 1);
  }


  gl_FragColor = color;
}

[test]
uniform vec4 a 1.0 2.0 3.0 4.0
uniform vec4 b 1.0 2.0 3.0 4.0
draw rect -1 -1 2 2
probe all rgb 0 1 0