[require]
GLSL >= 1.10

[vertex shader]
uniform vec4 arg0;
uniform vec4 arg1;
varying vec4 color;

void main()
{
	gl_Position = gl_Vertex;

	color.x = float(arg0.xxxx == arg1); /* false */
	color.y = float(arg0 == arg1); /* true */
	color.z = float(arg0.wzyx == arg1); /* false */
	color.w = float(arg0.wzyx == arg1.wzyx); /* true */
}

[fragment shader]
varying vec4 color;
void main()
{
	gl_FragColor = color;
}

[test]
uniform vec4 arg0 0.0 1.0 2.0 3.0
uniform vec4 arg1 0.0 1.0 2.0 3.0
draw rect -1 -1 2 2
probe all rgba 0.0 1.0 0.0 1.0