public Bitmap GetBitmap()
{
if (bitmap == null)
{
var ddsPF = DDSHelper.ConvertFromDDSAtlus(Header.PixelFormat);
if (ddsPF == DDSFourCC.NONE)
{
var PF = DDSHelper.DDSAtlusToPixelFormat(Header.PixelFormat);
bitmap = new Bitmap(Header.Width, Header.Height * Header.TileCount, PF, dataList[0], null);
}
else
{
DDSDecompressor.DDSDecompress(Header.Width, Header.Height * Header.TileCount, dataList[0], ddsPF, out byte[] newData);
bitmap = new Bitmap(Header.Width, Header.Height * Header.TileCount, PixelFormats.Bgra32, newData, null);
}
}
return(bitmap);
}
private static void DecompressDDS(BinaryReader reader, Stream destination, DDSContainerParameters @params)
{
if (@params.PixelFormatFlags.IsFourCC())
{
switch (@params.FourCC)
{
case DDSFourCCType.DXT1:
DDSDecompressor.DecompressDXT1(reader, destination, @params);
break;
case DDSFourCCType.DXT3:
DDSDecompressor.DecompressDXT3(reader, destination, @params);
break;
case DDSFourCCType.DXT5:
DDSDecompressor.DecompressDXT5(reader, destination, @params);
break;
default:
throw new NotImplementedException(@params.FourCC.ToString());
}
}
else
{
if (@params.PixelFormatFlags.IsLuminace())
{
throw new NotSupportedException("Luminace isn't supported");
}
else
{
if (@params.PixelFormatFlags.IsAlphaPixels())
{
DDSDecompressor.DecompressRGBA(reader, destination, @params);
}
else
{
DDSDecompressor.DecompressRGB(reader, destination, @params);
}
}
}
}
