public static void ToErpGfxSRVResource(this DdsFile dds, ErpGfxSRVResource srvRes, Stream mipMapsStream, bool importTexArray, uint texArrayIndex)
{
if (srvRes.SurfaceRes.HasMips && mipMapsStream == null)
{
throw new ArgumentNullException(nameof(mipMapsStream));
}
ErpGfxSurfaceFormat imageType = dds.GetErpGfxSurfaceFormat();
uint mipLinearSize = dds.GetLinearSize();
if (srvRes.SurfaceRes.HasMips)
{
int mipCount = (int)dds.header.mipMapCount / 4;
if (srvRes.SurfaceRes.Frag2.Mips.Count < dds.header.mipMapCount)
{
mipCount = srvRes.SurfaceRes.Frag2.Mips.Count;
}
bool identicalMipCount = mipCount == srvRes.SurfaceRes.Frag2.Mips.Count;
dds.header.mipMapCount -= (uint)mipCount;
uint div = (uint)Math.Pow(2.0, mipCount);
dds.header.width /= div;
dds.header.height /= div;
UInt64 offset = 0;
bool compress2017 = srvRes.SurfaceRes.Frag2.Mips.Exists(x => x.Compression != ErpCompressionAlgorithm.None);
List <ErpGfxSurfaceRes2Mips> newMips = new List <ErpGfxSurfaceRes2Mips>(mipCount);
using (MemoryStream ddsDataStream = new MemoryStream(dds.bdata, false))
using (BinaryReader reader = new BinaryReader(ddsDataStream))
using (BinaryWriter writer = new BinaryWriter(mipMapsStream, Encoding.ASCII, true))
{
for (int i = 0; i < mipCount; ++i)
{
ErpGfxSurfaceRes2Mips mip = new ErpGfxSurfaceRes2Mips();
if (identicalMipCount)
{
mip.Compression = srvRes.SurfaceRes.Frag2.Mips[i].Compression;
}
else if (compress2017)
{
mip.Compression = i % 2 == 0 ? ErpCompressionAlgorithm.LZ4 : ErpCompressionAlgorithm.None;
}
else
{
mip.Compression = ErpCompressionAlgorithm.None;
}
mip.Offset = offset;
byte[] mipData = reader.ReadBytes((int)mipLinearSize);
switch (mip.Compression)
{
case ErpCompressionAlgorithm.LZ4:
mipData = LZ4.LZ4Codec.EncodeHC(mipData, 0, mipData.Length);
break;
case ErpCompressionAlgorithm.None:
default:
break;
}
writer.Write(mipData);
mip.PackedSize = (UInt64)mipData.LongLength;
mip.Size = mipLinearSize;
offset += (UInt64)mipData.LongLength;
mipLinearSize /= 4;
newMips.Add(mip);
}
srvRes.SurfaceRes.Fragment1.Data = reader.ReadBytes((int)(reader.BaseStream.Length - reader.BaseStream.Position));
}
srvRes.SurfaceRes.Frag2.Mips = newMips;
}
else
{
byte[] imageByteData;
if (srvRes.SurfaceRes.Fragment0.ArraySize > 1)
{
uint bytesPerArrayImage = (uint)srvRes.SurfaceRes.Fragment1.Data.Length / srvRes.SurfaceRes.Fragment0.ArraySize;
if (!importTexArray)
{
Buffer.BlockCopy(dds.bdata, 0, srvRes.SurfaceRes.Fragment1.Data, (int)(bytesPerArrayImage * texArrayIndex), (int)bytesPerArrayImage);
}
else
{
if (dds.header10.arraySize <= 1)
{
throw new FileFormatException("The texture array size must be greater than 1");
}
imageByteData = dds.bdata;
srvRes.SurfaceRes.Fragment1.Data = imageByteData;
srvRes.SurfaceRes.Fragment0.ArraySize = dds.header10.arraySize;
// TODO: Add support for importing individual tex array slices
//imageByteData = new byte[bytesPerArrayImage];
//string input = Path.Combine(Path.GetDirectoryName(fileName), Path.GetFileNameWithoutExtension(fileName));
//for (int i = 0; i < srvRes.SurfaceRes.Fragment0.ArraySize; ++i)
//{
// Buffer.BlockCopy(imageData, (int)(bytesPerArrayImage * i), data, 0, (int)bytesPerArrayImage);
// dds.bdata = data;
// dds.Write(File.Open(output + "!!!" + i.ToString("000") + ".dds", FileMode.Create, FileAccess.Write, FileShare.Read), -1);
//}
}
}
else
{
imageByteData = dds.bdata;
srvRes.SurfaceRes.Fragment1.Data = imageByteData;
}
}
srvRes.Fragment0.ImageType = imageType;
srvRes.Fragment0.MipMapCount = dds.header.mipMapCount;
srvRes.SurfaceRes.Fragment0.ImageType = imageType;
srvRes.SurfaceRes.Fragment0.Width = dds.header.width;
srvRes.SurfaceRes.Fragment0.Height = dds.header.height;
srvRes.SurfaceRes.Fragment0.MipMapCount = dds.header.mipMapCount;
}
public static void ToErpGfxSRVResource(this DdsFile dds, ErpGfxSRVResource srvRes, Stream mipMapsStream, bool importTexArray, uint texArrayIndex)
{
if (srvRes.SurfaceRes.HasMips && mipMapsStream == null)
{
throw new ArgumentNullException(nameof(mipMapsStream));
}
ErpGfxSurfaceFormat imageType = dds.GetErpGfxSurfaceFormat();
uint mipLinearSize = dds.GetLinearSize();
if (srvRes.SurfaceRes.HasMips)
{
int mipCount = (int)dds.header.mipMapCount / 4;
if (srvRes.SurfaceRes.Frag2.Mips.Count < dds.header.mipMapCount)
{
mipCount = srvRes.SurfaceRes.Frag2.Mips.Count;
}
bool identicalMipCount = mipCount == srvRes.SurfaceRes.Frag2.Mips.Count;
dds.header.mipMapCount -= (uint)mipCount;
uint div = (uint)Math.Pow(2.0, mipCount);
dds.header.width /= div;
dds.header.height /= div;
UInt64 offset = 0;
var compressZStd = srvRes.SurfaceRes.Frag2.Mips.Any(x =>
x.Compression == ErpGfxSurfaceResMipCompressionAlgorithm.ZStandard);
bool compress2017 = !compressZStd && srvRes.SurfaceRes.Frag2.Mips.Exists(x =>
x.Compression != ErpGfxSurfaceResMipCompressionAlgorithm.None);
List <ErpGfxSurfaceRes2Mips> newMips = new List <ErpGfxSurfaceRes2Mips>(mipCount);
using (MemoryStream ddsDataStream = new MemoryStream(dds.bdata, false))
using (BinaryReader reader = new BinaryReader(ddsDataStream))
using (BinaryWriter writer = new BinaryWriter(mipMapsStream, Encoding.ASCII, true))
{
for (int i = 0; i < mipCount; ++i)
{
ErpGfxSurfaceRes2Mips mip = new ErpGfxSurfaceRes2Mips();
if (identicalMipCount)
{
mip.Compression = srvRes.SurfaceRes.Frag2.Mips[i].Compression;
}
else if (compressZStd)
{
// ZStd for mips introduced in Grid Legends
// if it's used in any mip, just assume we need to apply to all (for no good reason)
mip.Compression = ErpGfxSurfaceResMipCompressionAlgorithm.ZStandard;
}
else if (compress2017)
{
// Not sure how to decide which mip levels should be compressed or not
// I can't remember why I chose this scheme
mip.Compression = i % 2 == 0
? ErpGfxSurfaceResMipCompressionAlgorithm.LZ4
: ErpGfxSurfaceResMipCompressionAlgorithm.None;
}
else
{
mip.Compression = ErpGfxSurfaceResMipCompressionAlgorithm.None;
}
mip.Offset = offset;
byte[] mipData = reader.ReadBytes((int)mipLinearSize);
ulong mipPackedSize = (ulong)mipData.Length;
switch (mip.Compression)
{
case ErpGfxSurfaceResMipCompressionAlgorithm.ZStandard:
{
using var zs = new Compressor(ZstdSharp.Unsafe.Methods.ZSTD_defaultCLevel());
var compData = zs.Wrap(mipData);
writer.Write(compData);
mipPackedSize = (ulong)compData.Length;
break;
}
case ErpGfxSurfaceResMipCompressionAlgorithm.LZ4:
byte[] compressedMipData = new byte[LZ4Codec.MaximumOutputSize(mipData.Length)];
int compSize = LZ4Codec.Encode(mipData, 0, mipData.Length, compressedMipData, 0, compressedMipData.Length, LZ4Level.L12_MAX);
writer.Write(compressedMipData, 0, compSize);
mipPackedSize = (ulong)compSize;
break;
case ErpGfxSurfaceResMipCompressionAlgorithm.None:
writer.Write(mipData);
break;
default:
throw new NotSupportedException($"MipMap compression type {mip.Compression} is not supported");
}
mip.PackedSize = mipPackedSize;
mip.Size = mipLinearSize;
offset += mipPackedSize;
mipLinearSize /= 4;
newMips.Add(mip);
}
srvRes.SurfaceRes.Fragment1.Data = reader.ReadBytes((int)(reader.BaseStream.Length - reader.BaseStream.Position));
}
srvRes.SurfaceRes.Frag2.Mips = newMips;
}
else
{
byte[] imageByteData;
if (srvRes.SurfaceRes.Fragment0.ArraySize > 1)
{
uint bytesPerArrayImage = (uint)srvRes.SurfaceRes.Fragment1.Data.Length / srvRes.SurfaceRes.Fragment0.ArraySize;
if (!importTexArray)
{
Buffer.BlockCopy(dds.bdata, 0, srvRes.SurfaceRes.Fragment1.Data, (int)(bytesPerArrayImage * texArrayIndex), (int)bytesPerArrayImage);
}
else
{
if (dds.header10.arraySize <= 1)
{
throw new FileFormatException("The texture array size must be greater than 1");
}
imageByteData = dds.bdata;
srvRes.SurfaceRes.Fragment1.Data = imageByteData;
srvRes.SurfaceRes.Fragment0.ArraySize = dds.header10.arraySize;
// TODO: Add support for importing individual tex array slices
//imageByteData = new byte[bytesPerArrayImage];
//string input = Path.Combine(Path.GetDirectoryName(fileName), Path.GetFileNameWithoutExtension(fileName));
//for (int i = 0; i < srvRes.SurfaceRes.Fragment0.ArraySize; ++i)
//{
// Buffer.BlockCopy(imageData, (int)(bytesPerArrayImage * i), data, 0, (int)bytesPerArrayImage);
// dds.bdata = data;
// dds.Write(File.Open(output + "!!!" + i.ToString("000") + ".dds", FileMode.Create, FileAccess.Write, FileShare.Read), -1);
//}
}
}
else
{
imageByteData = dds.bdata;
srvRes.SurfaceRes.Fragment1.Data = imageByteData;
}
}
srvRes.Fragment0.ImageType = imageType;
srvRes.Fragment0.MipMapCount = dds.header.mipMapCount;
srvRes.SurfaceRes.Fragment0.ImageType = imageType;
srvRes.SurfaceRes.Fragment0.Width = dds.header.width;
srvRes.SurfaceRes.Fragment0.Height = dds.header.height;
srvRes.SurfaceRes.Fragment0.MipMapCount = dds.header.mipMapCount;
}