public static FtexFile ConvertToFtex(DdsFile file, FtexTextureType textureType)
{
FtexFile result = new FtexFile();
if (file.Header.PixelFormat.Equals(DdsPixelFormat.DdsPfA8R8G8B8()))
result.PixelFormatType = 0;
else if (file.Header.PixelFormat.Equals(DdsPixelFormat.DdsLuminance()))
result.PixelFormatType = 1;
else if (file.Header.PixelFormat.Equals(DdsPixelFormat.DdsPfDxt1()))
result.PixelFormatType = 2;
else if (file.Header.PixelFormat.Equals(DdsPixelFormat.DdsPfDxt3()))
result.PixelFormatType = 3; // HACK: This is just a guess. The value isn't used in the Ground Zeroes files.
else if (file.Header.PixelFormat.Equals(DdsPixelFormat.DdsPfDxt5()))
result.PixelFormatType = 4;
else
throw new NotImplementedException(String.Format("Unknown PixelFormatType {0}", file.Header.PixelFormat));
result.Height = Convert.ToInt16(file.Header.Height);
result.Width = Convert.ToInt16(file.Header.Width);
result.Depth = Convert.ToInt16(file.Header.Depth);
var mipMapData = GetMipMapData(file);
var mipMaps = GetMipMapInfos(mipMapData);
var ftexsFiles = GetFtexsFiles(mipMaps, mipMapData);
result.MipMapCount = Convert.ToByte(mipMaps.Count());
result.NrtFlag = 2;
result.AddMipMapInfos(mipMaps);
result.AddFtexsFiles(ftexsFiles);
result.FtexsFileCount = Convert.ToByte(ftexsFiles.Count());
result.AdditionalFtexsFileCount = Convert.ToByte(ftexsFiles.Count() - 1);
result.TextureType = textureType;
// TODO: Handle the DDS depth flag.
return result;
}
public static DdsFile ConvertToDds(FtexFile file, bool deswizzle)
{
DdsFile result = new DdsFile
{
Header = new DdsFileHeader
{
Size = DdsFileHeader.DefaultHeaderSize,
Flags = DdsFileHeaderFlags.Texture | DdsFileHeaderFlags.MipMap,
Height = file.Height,
Width = file.Width,
Depth = file.Depth,
MipMapCount = file.MipMapCount,
Caps = DdsSurfaceFlags.Texture | DdsSurfaceFlags.MipMap
}
};
result.Data = file.Data;
switch (file.PixelFormatType)
{
case 0:
result.Header.PixelFormat = DdsPixelFormat.DdsPfA8R8G8B8();
result.Header.Flags = result.Header.Flags | DdsFileHeaderFlags.Volume;
if (deswizzle)
result.Data = ByteSwap16(Deswizzle(result.Data, result.Header.Width, result.Header.Height, result.Header.MipMapCount, "RGBA8"));
break;
case 1:
result.Header.PixelFormat = DdsPixelFormat.DdsLuminance();
break;
case 2:
result.Header.PixelFormat = DdsPixelFormat.DdsPfDxt1();
if (deswizzle)
result.Data = ByteSwap16(Deswizzle(result.Data, result.Header.Width, result.Header.Height, result.Header.MipMapCount, "DXT1"));
break;
case 3:
result.Header.PixelFormat = DdsPixelFormat.DdsPfDxt3(); // HACK: This is just a guess. The value isn't used in the Ground Zeroes files.
if (deswizzle)
result.Data = ByteSwap16(Deswizzle(result.Data, result.Header.Width, result.Header.Height, result.Header.MipMapCount, "DXT3"));
break;
case 4:
result.Header.PixelFormat = DdsPixelFormat.DdsPfDxt5();
if (deswizzle)
result.Data = ByteSwap16(Deswizzle(result.Data, result.Header.Width, result.Header.Height, result.Header.MipMapCount, "DXT5"));
break;
default:
throw new NotImplementedException(String.Format("Unknown PixelFormatType {0}", file.PixelFormatType));
}
return result;
}
public static DdsFile Read(Stream inputStream)
{
DdsFile result = new DdsFile();
BinaryReader reader = new BinaryReader(inputStream, Encoding.Default, true);
if (reader.ReadInt32() != MagicNumber)
return null;
result.Header = DdsFileHeader.Read(inputStream);
if (result.Header.IsDx10())
{
result.HeaderDx10 = DdsFileHeaderDx10.Read(inputStream);
}
MemoryStream dataStream = new MemoryStream();
inputStream.CopyTo(dataStream);
result.Data = dataStream.ToArray();
return result;
}
public static DdsFile Read(Stream inputStream)
{
DdsFile result = new DdsFile();
BinaryReader reader = new BinaryReader(inputStream, Encoding.Default, true);
reader.Assert(MagicNumber);
result.Header = DdsFileHeader.Read(inputStream);
if (result.Header.IsDx10())
{
result.HeaderDx10 = DdsFileHeaderDx10.Read(inputStream);
}
MemoryStream dataStream = new MemoryStream();
inputStream.CopyTo(dataStream);
result.Data = dataStream.ToArray();
return(result);
}
private static List<byte[]> GetMipMapData(DdsFile file)
{
const int minimumWidth = 4;
const int minimumHeight = 4;
List<byte[]> mipMapDatas = new List<byte[]>();
byte[] data = file.Data;
int dataOffset = 0;
var width = file.Header.Width;
var height = file.Header.Height;
int mipMapsCount = file.Header.Flags.HasFlag(DdsFileHeaderFlags.MipMap) ? file.Header.MipMapCount : 1;
for (int i = 0; i < mipMapsCount; i++)
{
int size = DdsPixelFormat.CalculateImageSize(file.Header.PixelFormat, width, height);
var buffer = new byte[size];
Array.Copy(data, dataOffset, buffer, 0, size);
mipMapDatas.Add(buffer);
dataOffset += size;
width = Math.Max(width / 2, minimumWidth);
height = Math.Max(height / 2, minimumHeight);
}
return mipMapDatas;
}
