public void Write(Stream outputStream)
{
BinaryWriter writer = new BinaryWriter(outputStream, Encoding.Default, true);
writer.Write(MagicNumber);
Header.Write(outputStream);
if (Header.IsDx10())
{
HeaderDx10.Write(outputStream);
}
writer.Write(Data);
}
/// <summary>
/// Decode DDS Header.
/// </summary>
/// <param name="reader">Image stream.</param>
/// <param name="description">Image description.</param>
public void DecodeHeader(BinaryReader reader, out ImageDescription description)
{
Header header = ImageHelpers.ReadStruct <Header>(reader);
DxgiFormat dxgiFormat;
D3DFormat d3dFormat = D3DFormat.Unknown;
HeaderDx10 headerDX10 = default;
if (header.PixelFormat.FourCC != Helper.DX10)
{
Helper.DetermineFormat(ref header.PixelFormat, out dxgiFormat, out d3dFormat);
}
else
{
byte[] headerDx10Bytes = reader.ReadBytes(Marshal.SizeOf(typeof(HeaderDx10)));
GCHandle headerDx10Handle = GCHandle.Alloc(headerDx10Bytes, GCHandleType.Pinned);
headerDX10 = (HeaderDx10)Marshal.PtrToStructure(headerDx10Handle.AddrOfPinnedObject(), typeof(HeaderDx10));
headerDx10Handle.Free();
dxgiFormat = headerDX10.Format;
}
uint faces = 1;
if (headerDX10.MiscFlags.HasFlag(ResourceMiscFlags.TextureCube) ||
header.Caps2.HasFlag(Caps2.CubeMap))
{
faces = 6;
}
description = new ImageDescription()
{
imageFormat = ImageFormat.DDS,
Width = header.Width,
Height = header.Height,
Depth = header.Flags.HasFlag(HeaderFlags.Depth) ? header.Depth : 1,
MipLevels = header.MipMapCount == 0 ? 1 : header.MipMapCount,
ArraySize = headerDX10.ArraySize == 0 ? 1 : headerDX10.ArraySize,
Faces = faces,
pixelFormat = (WaveEngine.Common.Graphics.PixelFormat)dxgiFormat,
};
}
