rasterizeHeadlessRegion
fun rasterizeHeadlessRegion(commands: List<DrawCommand>, bounds: IntRect, scale: Int): HeadlessImage(source)
Rasterizes a nonnegative logical region for runtime presentation without translating source-sampling coordinates. Output storage contains only the checked physical extent of bounds; ordered commands retain their original coordinates. Validation, clip balance, exact Float sampling and pixel composition follow rasterizeHeadless. No commands, pixels or region history are retained after the returned immutable image is released.