getWebglIndex static method
Implementation
static int getWebglIndex(int bitmapDataChannel) {
if (bitmapDataChannel & BitmapDataChannel.RED != 0) return 0;
if (bitmapDataChannel & BitmapDataChannel.GREEN != 0) return 1;
if (bitmapDataChannel & BitmapDataChannel.BLUE != 0) return 2;
if (bitmapDataChannel & BitmapDataChannel.ALPHA != 0) return 3;
throw ArgumentError('Invalid bitmapDataChannel');
}