public void Read(GenericReader r)
{
var size = r.ReadUInt32();
if (size != 124)
{
throw new FileFormatException($"Invalid DDS file header size: {size}.");
}
dwFlags = (DDSFlags)r.ReadUInt32();
if (!Utils.ContainsBitFlags((int)dwFlags, (int)DDSFlags.Height, (int)DDSFlags.Width))
{
throw new FileFormatException($"Invalid DDS file flags: {dwFlags}.");
}
dwHeight = r.ReadUInt32();
dwWidth = r.ReadUInt32();
dwPitchOrLinearSize = r.ReadUInt32();
dwDepth = r.ReadUInt32();
dwMipMapCount = r.ReadUInt32();
dwReserved1 = new uint[11];
for (var i = 0; i < 11; i++)
{
dwReserved1[i] = r.ReadUInt32();
}
ddspf = new DDSPixelFormat(r);
dwCaps = (DDSCaps)r.ReadUInt32();
if (!Utils.ContainsBitFlags((int)dwCaps, (int)DDSCaps.Texture))
{
throw new FileFormatException($"Invalid DDS file caps: {dwCaps}.");
}
dwCaps2 = (DDSCaps2)r.ReadUInt32();
dwCaps3 = r.ReadUInt32();
dwCaps4 = r.ReadUInt32();
dwReserved2 = r.ReadUInt32();
}
internal static DDSHeader Read(BinaryReader br)
{
var h = new DDSHeader();
h.size = br.ReadInt32();
h.flags = br.ReadInt32();
h.height = br.ReadInt32();
h.width = br.ReadInt32();
h.sizeOrPitch = br.ReadInt32();
h.depth = br.ReadInt32();
h.mipMapCount = br.ReadInt32();
h.reserved1 = new int[11];
for (var i = 0; i < 11; ++i)
{
h.reserved1[i] = br.ReadInt32();
}
h.pixelFormat = DDSPixelFormat.Read(br);
h.caps = DDSCaps.Read(br);
h.reserved2 = br.ReadInt32();
return(h);
}
public int[] reserved; //length = 2
internal static DDSCaps Read(BinaryReader br)
{
var caps = new DDSCaps();
caps.caps1 = br.ReadInt32();
caps.caps2 = br.ReadInt32();
caps.reserved = new int[2];
caps.reserved[0] = br.ReadInt32();
caps.reserved[1] = br.ReadInt32();
return(caps);
}
private static DDSHeader ReadHeader(BinaryReader input)
{
DDSHeader header = new DDSHeader();
header.DwSize = input.ReadInt32();
if (header.DwSize != 124)
{
throw new InvalidOperationException("Invalid dds header size.");
}
header.DwFlags = input.ReadInt32();
header.DwHeight = input.ReadInt32();
header.DwWidth = input.ReadInt32();
header.DwLinearSize = input.ReadInt32();
header.DwDepth = input.ReadInt32();
header.DwMipMapCount = input.ReadInt32();
header.DwAlphaBitDepth = input.ReadInt32();
header.DwReserved1 = new int[10];
for (int i = 0; i < 10; i++)
{
header.DwReserved1[i] = input.ReadInt32();
}
header.ImageFormat = ReadImageFormat(input);
header.DwCaps = input.ReadInt32();
header.DwCaps2 = input.ReadInt32();
header.DwCaps3 = input.ReadInt32();
header.DwCaps4 = input.ReadInt32();
header.DwTextureStage = input.ReadInt32();
int mipMaps = 1 + (int)System.Math.Ceiling(System.Math.Log(System.Math.Max(header.DwHeight, header.DwWidth)) / System.Math.Log(2));
DDSCaps cap = (DDSCaps)header.DwCaps;
if ((cap & DDSCaps.MipMap) == DDSCaps.MipMap)
{
DDSFlags flag = (DDSFlags)header.DwFlags;
if ((flag & DDSFlags.MipCount) != DDSFlags.MipCount)
{
header.DwMipMapCount = mipMaps;
}
}
else
{
header.DwMipMapCount = 1;
}
return(header);
}
public int[] reserved; //length = 2
internal static DDSCaps Read( BinaryReader br )
{
var caps = new DDSCaps();
caps.caps1 = br.ReadInt32();
caps.caps2 = br.ReadInt32();
caps.reserved = new int[2];
caps.reserved[ 0 ] = br.ReadInt32();
caps.reserved[ 1 ] = br.ReadInt32();
return caps;
}
