[require]
GLSL >= 1.20

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

[fragment shader]
void main()
{
    const vec2 v = pow(vec2(3,65), vec2(2,0.5));
    const float splat = v.x - v.y;
    gl_FragColor = vec4(0.0, splat, 0.0, 1.0);
}

[test]
draw rect -1 -1 2 2
probe all rgb 0.0 0.937742251701451 0.0