[require]
GLSL >= 1.10

[vertex shader]
varying vec4 color;
uniform vec4 arg0;
void main()
{
	gl_Position = gl_Vertex;
	color = sign(arg0) + vec4(1.5, -0.5, 0.5, 0.5);
}

[fragment shader]
varying vec4 color;

void main()
{
	gl_FragColor = color;
}

[test]
uniform vec4 arg0 -5.0 5.0 0.0 0.0
draw rect -1 -1 2 2
probe rgb 1 1 0.5 0.5 0.5 0.5