rlViewport method
Implementation
void rlViewport(
num x,
num y,
num width,
num height,
) => run(
() => 'rlViewport($x, $y, $width, $height)',
() => rl.Rlgl.rlViewport(
x.toInt(),
y.toInt(),
width.toInt(),
height.toInt(),
),
);