/// <summary>
/// Read the content of the DDS header.
/// </summary>
/// <param name="reader"></param>
/// <returns>File is valid</returns>
public override bool Read(EndianReader reader)
{
reader.Format = EndianFormat.LittleEndian;
var tag = reader.ReadInt32();
var size = reader.ReadInt32();
if (tag != 0x20534444 && size != Size)
{
return(false);
}
else
{
Flags = (DDSFlags)reader.ReadInt32();
Height = reader.ReadInt32();
Width = reader.ReadInt32();
PitchOrLinearSize = reader.ReadInt32();
Depth = reader.ReadInt32();
MipMapCount = reader.ReadInt32();
reader.ReadBlock(Reserved1, 0, 0x2C);
if (!PixelFormat.Read(reader))
{
return(false);
}
Caps = (DDSComplexityFlags)reader.ReadInt32();
Caps2 = (DDSSurfaceInfoFlags)reader.ReadInt32();
Caps3 = reader.ReadInt32();
Caps4 = reader.ReadInt32();
Reserved2 = reader.ReadInt32();
// Add more verifications here
return(true);
}
}
private void CreateHeaderCubemap(int mipMapCount, BitmapFormat format, BitmapFlags flags)
{
Caps |= DDSComplexityFlags.Complex;
Caps2 |= DDSSurfaceInfoFlags.CubeMapAllFaces;
SetTextureFormat(mipMapCount, format, flags);
}
private void CreateHeaderVolume(int mipMapCount, int depth, BitmapFormat format, BitmapFlags flags)
{
Flags |= DDSFlags.Depth;
Caps |= DDSComplexityFlags.Complex;
Caps2 |= DDSSurfaceInfoFlags.Volume;
Depth = depth;
SetTextureFormat(mipMapCount, format, flags);
}
private void CreateHeaderTexture2D(int mipMapCount, BitmapFormat format, BitmapFlags flags)
{
Depth = 0;
if (mipMapCount > 0)
{
MipMapCount = 1 + mipMapCount;
Flags |= DDSFlags.MipMapCount;
Caps |= DDSComplexityFlags.MipMap | DDSComplexityFlags.Complex;
}
else
{
MipMapCount = 0;
}
SetTextureFormat(mipMapCount, format, flags);
}