[require]
GLSL >= 1.10

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

[fragment shader]
uniform vec4 color;
void main()
{
	const vec4 red = vec4(1.0, 0.0, 0.0, 0.0);
	const vec4 green = vec4(0.0, 1.0, 0.0, 0.0);

	if (!(color.b != 0.0))
		gl_FragColor = red;
	else
		gl_FragColor = green;
}

[test]
uniform vec4 color 0.0 0.0 1.0 0.0
draw rect -1 -1 2 2
probe rgb 1 1 0.0 1.0 0.0