Esempio n. 1
0
        /// <summary>
        /// Reads a DDS header from a stream. On return, the stream will be positioned at the beginning of the texture data.
        /// </summary>
        /// <param name="stream">The stream to read from.</param>
        /// <returns>The header that was read.</returns>
        /// <exception cref="System.InvalidOperationException">Thrown if the DDS header is invalid.</exception>
        public static DdsHeader Read(Stream stream)
        {
            var reader = new BinaryReader(stream);

            if (stream.Length - stream.Position < 128)
            {
                throw new InvalidOperationException("Invalid DDS file: header is too small");
            }
            var result = new DdsHeader();

            // Read and verify magic
            if (reader.ReadUInt32() != DdsFourCc.FromString("DDS "))
            {
                throw new InvalidOperationException("Invalid DDS file: invalid header magic");
            }

            // Read the DDS header
            result.ReadDdsHeader(reader);

            // If the format FourCC is 'DX10', read the extended header
            if (result.FourCc == DdsFourCc.FromString("DX10"))
            {
                result.ReadDdsD3D10Header(reader);
            }

            return(result);
        }
Esempio n. 2
0
 private void WriteDdsPixelFormat(BinaryWriter writer)
 {
     writer.Write(32);
     writer.Write((uint)CalculateFormatFlags());
     writer.Write((D3D10Format == DxgiFormat.Unknown) ? FourCc : DdsFourCc.FromString("DX10"));
     writer.Write(BitsPerPixel);
     writer.Write(RBitMask);
     writer.Write(GBitMask);
     writer.Write(BBitMask);
     writer.Write(ABitMask);
 }
Esempio n. 3
0
        /// <summary>
        /// Writes the DDS header to a stream. On return, the stream will be positioned where the texture data should go.
        /// </summary>
        /// <param name="stream">The stream to write to.</param>
        /// <exception cref="System.InvalidOperationException">Thrown if an error occurs while saving.</exception>
        public void WriteTo(Stream stream)
        {
            var writer = new BinaryWriter(stream);

            writer.Write(DdsFourCc.FromString("DDS "));
            WriteDdsHeader(writer);
            if (D3D10Format != DxgiFormat.Unknown)
            {
                WriteDdsD3D10Header(writer);
            }
        }