public static void Save(BinaryWriter bw, DDS dds)
{
Flags flags = (Flags.Caps | Flags.Height | Flags.Width | Flags.PixelFormat | Flags.MipMapCount);
flags |= (dds.format == D3DFormat.A8R8G8B8 ? Flags.Pitch : Flags.LinearSize);
bw.Write(new byte[] { 0x44, 0x44, 0x53, 0x20 }); // 'DDS '
bw.Write(124);
bw.Write((int)flags);
bw.Write(dds.Height);
bw.Write(dds.Width);
bw.Write((flags.HasFlag(Flags.Pitch) ? dds.width * 4 : dds.MipMaps[0].Data.Length));
bw.Write(dds.Depth);
bw.Write(dds.MipMaps.Count);
for (int i = 0; i < 11; i++) { bw.Write(0); }
// PixelFormat
bw.Write(32);
switch (dds.Format)
{
case D3DFormat.DXT1:
case D3DFormat.DXT3:
case D3DFormat.DXT5:
bw.Write(4); // fourCC length
bw.Write(dds.Format.ToString().ToCharArray());
bw.Write(0);
bw.Write(0);
bw.Write(0);
bw.Write(0);
bw.Write(0);
break;
default:
bw.Write(0); // fourCC length
bw.Write(0);
bw.Write(32); // RGB bit count
bw.Write(255 << 16); // R mask
bw.Write(255 << 8); // G mask
bw.Write(255 << 0); // B mask
bw.Write(255 << 24); // A mask
break;
}
bw.Write((int)DDSCaps.DDSCAPS_TEXTURE);
bw.Write(0); // Caps 2
bw.Write(0); // Caps 3
bw.Write(0); // Caps 4
bw.Write(0); // Reserved
for (int i = 0; i < dds.mipMaps.Count; i++)
{
bw.Write(dds.mipMaps[i].Data);
}
}
public void ExtractTexture(FileStream fs, string path, int Flags)
{
DDS dds = new DDS();
int[] dimensionLookup = new int[] { 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096 };
int size = 0;
int u = (Flags & 0x00F00000) >> 20;
int v = (Flags & 0x0F000000) >> 24;
int f = (Flags & 0x0000FF00) >> 8;
switch (f)
{
case 12: // DXT1
size = (dimensionLookup[u] * dimensionLookup[v]) / 2;
dds.Format = D3DFormat.DXT1;
break;
case 15: // DXT5
size = dimensionLookup[u] * dimensionLookup[v];
dds.Format = D3DFormat.DXT5;
break;
default:
throw new NotImplementedException(string.Format("Unknown texture format: {0}", f));
}
dds.Width = dimensionLookup[u];
dds.Height = dimensionLookup[v];
dds.MipMaps.Add(new Generics.MipMap { Width = dds.Width, Height = dds.Height, Data = new byte[size] });
fs.Read(dds.MipMaps[0].Data, 0, size);
dds.Save(path);
}
public static DDS Load(byte[] data)
{
DDS dds = new DDS();
using (MemoryStream ms = new MemoryStream(data))
using (BinaryReader br = new BinaryReader(ms))
{
if (!IsDDS(br)) { return null; }
dds.pixelFormat = new DDSPixelFormat();
br.ReadUInt32(); // header length
dds.flags = (Flags)br.ReadUInt32();
dds.height = (int)br.ReadUInt32();
dds.width = (int)br.ReadUInt32();
dds.pitch = (int)br.ReadUInt32();
dds.depth = (int)br.ReadUInt32();
int mipCount = (int)br.ReadUInt32();
for (int i = 0; i < 11; i++) { br.ReadUInt32(); }
br.ReadUInt32(); // pixel format length
dds.pixelFormat.Flags = (PixelFormatFlags)br.ReadUInt32();
dds.pixelFormat.FourCC = (PixelFormatFourCC)br.ReadUInt32();
dds.pixelFormat.RGBBitCount = (int)br.ReadUInt32();
dds.pixelFormat.RBitMask = br.ReadUInt32();
dds.pixelFormat.GBitMask = br.ReadUInt32();
dds.pixelFormat.BBitMask = br.ReadUInt32();
dds.pixelFormat.ABitMask = br.ReadUInt32();
dds.caps = (DDSCaps)br.ReadUInt32();
dds.caps2 = (DDSCaps2)br.ReadUInt32();
br.ReadUInt32();
br.ReadUInt32();
br.ReadUInt32();
if (dds.pixelFormat.Flags.HasFlag(PixelFormatFlags.DDPF_FOURCC))
{
dds.format = (D3DFormat)dds.pixelFormat.FourCC;
}
else if (dds.pixelFormat.Flags.HasFlag(PixelFormatFlags.DDPF_RGB) & dds.pixelFormat.Flags.HasFlag(PixelFormatFlags.DDPF_ALPHAPIXELS))
{
dds.format = D3DFormat.A8R8G8B8;
}
for (int i = 0; i < Math.Max(1, mipCount); i++)
{
var mip = new MipMap
{
Width = dds.width >> i,
Height = dds.height >> i
};
switch (dds.format)
{
case D3DFormat.A8R8G8B8:
mip.Data = br.ReadBytes(mip.Width * mip.Height * 4);
break;
case D3DFormat.DXT1:
mip.Data = br.ReadBytes((((mip.Width + 3) / 4) * ((mip.Height + 3) / 4)) * 8);
break;
case D3DFormat.DXT3:
case D3DFormat.DXT5:
mip.Data = br.ReadBytes((((mip.Width + 3) / 4) * ((mip.Height + 3) / 4)) * 16);
break;
}
dds.mipMaps.Add(mip);
}
}
return dds;
}
public static DDS Load(byte[] data)
{
DDS dds = new DDS();
using (MemoryStream ms = new MemoryStream(data))
using (BinaryReader br = new BinaryReader(ms))
{
if (!IsDDS(br))
{
return(null);
}
br.ReadUInt32(); // header length
dds.Flags = (HeaderFlags)br.ReadUInt32();
dds.Height = (int)br.ReadUInt32();
dds.Width = (int)br.ReadUInt32();
dds.Pitch = (int)br.ReadUInt32();
dds.Depth = (int)br.ReadUInt32();
int mipCount = (int)br.ReadUInt32();
for (int i = 0; i < 11; i++)
{
br.ReadUInt32();
}
br.ReadUInt32(); // pixel format length
dds.PixelFormat = new DDSPixelFormat
{
Flags = (PixelFormatFlags)br.ReadUInt32(),
FourCC = (PixelFormatFourCC)br.ReadUInt32(),
RGBBitCount = (int)br.ReadUInt32(),
RBitMask = br.ReadUInt32(),
GBitMask = br.ReadUInt32(),
BBitMask = br.ReadUInt32(),
ABitMask = br.ReadUInt32()
};
dds.Caps = (DDSCaps)br.ReadUInt32();
dds.Caps2 = (DDSCaps2)br.ReadUInt32();
br.ReadUInt32();
br.ReadUInt32();
br.ReadUInt32();
if (dds.PixelFormat.Flags.HasFlag(PixelFormatFlags.DDPF_FOURCC))
{
dds.Format = (D3DFormat)dds.PixelFormat.FourCC;
}
else if (dds.PixelFormat.Flags.HasFlag(PixelFormatFlags.DDPF_RGB) & dds.PixelFormat.Flags.HasFlag(PixelFormatFlags.DDPF_ALPHAPIXELS))
{
dds.Format = D3DFormat.A8R8G8B8;
}
for (int i = 0; i < Math.Max(1, mipCount); i++)
{
MipMap mip = new MipMap
{
Width = dds.Width >> i,
Height = dds.Height >> i
};
switch (dds.Format)
{
case D3DFormat.A8R8G8B8:
mip.Data = br.ReadBytes(mip.Width * mip.Height * 4);
break;
case D3DFormat.DXT1:
mip.Data = br.ReadBytes((((mip.Width + 3) / 4) * ((mip.Height + 3) / 4)) * 8);
break;
case D3DFormat.DXT3:
case D3DFormat.DXT5:
mip.Data = br.ReadBytes((((mip.Width + 3) / 4) * ((mip.Height + 3) / 4)) * 16);
break;
}
dds.MipMaps.Add(mip);
}
}
return(dds);
}
