Draw an RGB pixel at the given coordinates.
setPixel updates the underlying texture. If you need to make multiple calls, use BitmapDataUpdateBatch instead.
Source
void setPixel(num x, num y, int color) {
var updateBatch = new BitmapDataUpdateBatch(this);
updateBatch.setPixel32(x, y, color | 0xFF000000);
updateBatch.update();
}