out vec4 sk_FragColor; uniform vec4 colorGreen; uniform vec4 colorRed; float foo_ff2(const vec2 v) { return v.x * v.y; } void bar_vf(inout float x) { float y[2]; y[0] = x; y[1] = x * 2.0; x = foo_ff2(vec2(y[0], y[1])); } vec4 main() { float x = 10.0; bar_vf(x); return x == 200.0 ? colorGreen : colorRed; }