[require]
GLSL >= 1.20

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

[fragment shader]
void main()
{
   const vec2 v1 = clamp(vec2(-10.0, -15.0), vec2(-5.0, 5.0), vec2(1.0, 10.0));
   const vec2 v2 = clamp(v1, -0.25, 1.25);
   gl_FragColor = vec4(0.0, v2.x + v2.y, 0.0, 1.0);
}

[test]
draw rect -1 -1 2 2
probe all rgb 0.0 1.0 0.0