public void Set(Color c, Action <PixelData> func)
{
queue.Add(c);
if (queue.Count == 16)
{
var colorsWindows = Enumerable.Range(0, 16).Select(j => queue[order3ds[order3ds[order3ds[j]]]]); // invert order3ds
var alpha = colorsWindows.Reverse().Aggregate(0ul, (a, b) => (a * 16) | (byte)(b.A / 16));
var colors = colorsWindows.Select(c2 => new RGB(c2.R, c2.G, c2.B)).ToList();
Block block;
// special case 1: this block has all 16 pixels exactly the same color
if (colors.All(color => color == colors[0]))
{
block = PackSolidColor(colors[0]);
}
// special case 2: this block was previously etc1-compressed
else if (!Optimizer.RepackEtc1CompressedBlock(colors, out block))
{
block = Optimizer.Encode(colors);
}
func(new PixelData {
Alpha = alpha, Block = block
});
queue.Clear();
}
}
public Etc1PixelData EncodeColors(IList <Color> colorBatch)
{
var colorsWindows = Enumerable.Range(0, 16).Select(j => _zOrdered ?
colorBatch[Constants.ZOrder[Constants.ZOrder[Constants.ZOrder[j]]]] :
colorBatch[Constants.NormalOrder[j]]).ToArray();
var alpha = colorsWindows.Reverse().Aggregate(0ul, (a, b) => (a * 16) | (byte)(b.A / 16));
var colors = colorsWindows.Select(c2 => new RGB(c2.R, c2.G, c2.B)).ToList();
Block block;
// special case 1: this block has all 16 pixels exactly the same color
if (colors.All(color => color == colors[0]))
{
block = PackSolidColor(colors[0]);
}
// special case 2: this block was previously etc1-compressed
else if (!Optimizer.RepackEtc1CompressedBlock(colors, out block))
{
block = Optimizer.Encode(colors);
}
return(new Etc1PixelData {
Alpha = alpha, Block = block
});
}