private byte[] GetClut8()
{
var data = new byte[256 * 4];
for (var i = 0; i < 256; i++)
{
var srcIndex = Ps2.Repl(i);
data[i * 4 + 0] = Clut[srcIndex * 4 + 0];
data[i * 4 + 1] = Clut[srcIndex * 4 + 1];
data[i * 4 + 2] = Clut[srcIndex * 4 + 2];
data[i * 4 + 3] = Ps2.FromPs2Alpha(Clut[srcIndex * 4 + 3]);
}
return data;
}
private static byte[] GetBitmapFrom8bpp(byte[] src, byte[] palette, int width, int height)
{
var dst = new byte[width * height * 4];
for (int i = 0; i < dst.Length; i += 4)
{
var index = Ps2.Repl(src[i / 4]);
dst[i + 0] = (byte)Math.Max(0, palette[index * 4 + 2] * 2 - 1);
dst[i + 1] = (byte)Math.Max(0, palette[index * 4 + 1] * 2 - 1);
dst[i + 2] = (byte)Math.Max(0, palette[index * 4 + 0] * 2 - 1);
dst[i + 3] = (byte)Math.Max(0, palette[index * 4 + 3] * 2 - 1);
}
return(dst);
}
private static byte[] GetKh2Clut8(byte[] rawClut)
{
var inputColorCount = rawClut.Length / 4;
var newClut = new byte[256 * 4];
for (var i = 0; i < inputColorCount; i++)
{
var dstIndex = Ps2.Repl(i);
newClut[dstIndex * 4 + 0] = rawClut[i * 4 + 0];
newClut[dstIndex * 4 + 1] = rawClut[i * 4 + 1];
newClut[dstIndex * 4 + 2] = rawClut[i * 4 + 2];
newClut[dstIndex * 4 + 3] = ToPs2Alpha(rawClut[i * 4 + 3]);
}
return(newClut);
}
private static byte[] GetKh2Clut8(byte[] rawClut)
{
var newClut = new byte[256 * 4];
if (rawClut.Length < newClut.Length)
{
throw new ArgumentException(
$"The clut must be at least {newClut.Length} bytes long.");
}
for (var i = 0; i < 256; i++)
{
var dstIndex = Ps2.Repl(i);
newClut[dstIndex * 4 + 0] = rawClut[i * 4 + 0];
newClut[dstIndex * 4 + 1] = rawClut[i * 4 + 1];
newClut[dstIndex * 4 + 2] = rawClut[i * 4 + 2];
newClut[dstIndex * 4 + 3] = ToPs2Alpha(rawClut[i * 4 + 3]);
}
return(newClut);
}
