[require]
GLSL >= 1.20

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

[fragment shader]
#version 120
struct S {
       float f;
       vec4 v;
};

uniform S color;
void main()
{
	gl_FragColor = color.f * color.v;
}

[test]
uniform float color.f 2.0
uniform vec4 color.v 0.0 0.5 0.0 0.0
draw rect -1 -1 1 2
uniform float color.f 3.0
uniform vec4 color.v 0.0 0.0 0.34 0.0
draw rect 0 -1 1 2
relative probe rgb (0.25, 0.5) (0.0, 1.0, 0.0)
relative probe rgb (0.75, 0.5) (0.0, 0.0, 1.0)